CN117468438A

CN117468438A - Anti-pulling pile, pile structure, pile body, base, fixedly-connected component and construction method

Info

Publication number: CN117468438A
Application number: CN202311582551.9A
Authority: CN
Inventors: 曾庆义
Original assignee: Shenzhen Julian Anchor Technology Co ltd
Current assignee: Shenzhen Julian Anchor Technology Co ltd
Priority date: 2023-11-23
Filing date: 2023-11-23
Publication date: 2024-01-30

Abstract

The invention discloses a uplift pile, which comprises: pile holes formed by extending the surface of the pile hole inwards towards the stratum, and pile structures arranged in the pile holes along the axial direction of the pile holes; the pile structure comprises a pile body and tie bars, wherein the pile body is a structural object formed by reinforced concrete or/and a steel structure, the pile body is embedded and fixed at the lower end of a pile hole, the lower end of each tie bar is connected with the pile body, and the upper end of each tie bar is positioned above a pile hole orifice of the pile hole and used for connecting an external connecting member; the pile hole is characterized in that a hollow pile without a pile body is arranged between the top surface of the pile body and the hole opening of the pile hole, and the hollow pile is a pile hole cavity, or/and is backfilled soil in the pile hole cavity, or/and is self-falling soil with retracted or/and slumped soil on the hole wall soil layer of the pile hole cavity. In the uplift pile structure, the pile body cannot displace downwards relative to the stratum, the phenomenon of repeated up and down displacement relative to the stratum is avoided, the friction strength between the pile body and the stratum, particularly the long-term friction strength is ensured, and the risk of large friction strength reduction or failure is avoided.

Description

Anti-pulling pile, pile structure, pile body, base, fixedly-connected component and construction method

Technical Field

The invention relates to the technical field of civil engineering, in particular to a uplift pile, a pile structure, a pile body, a base and a fixedly connected assembly for the uplift pile, and a construction method of the uplift pile.

Background

The pile commonly used in the current engineering is that the top end of the pile body is directly connected with an external connecting member (such as a bearing platform of a foundation, a bottom plate of a basement, a ground beam and the like) or a cushion layer thereof, so that the force transmission between the pile and the external connecting member is realized. Piles are divided into three categories of bearing piles, anti-pulling piles and anti-sliding piles according to different functions, and loads born by the piles with different functions are different. The bearing piles are pressed, the anti-pulling piles are pulled, and the anti-sliding piles are bent and sheared.

In the prior art, the anti-floating pile is directly connected with an external connecting member or a cushion layer thereof by adopting a pile body, when the external connecting member floats upwards under the action of buoyancy, the pile body and the external connecting member synchronously displace upwards, when the buoyancy of the external connecting member reduces and subsides downwards, the pile body synchronously displaces downwards, and as the underground water level is periodically changed, the pile body periodically and repeatedly displaces back and forth relative to the stratum, the displacement is the relative displacement between the pile body and the stratum, has great influence on the friction resistance intensity between the pile body and the stratum, even can lead to the fixation looseness between the pile body and the stratum, and reduces or even fails the anti-floating bearing capacity; moreover, the pile side friction strength of the anti-pulling pile is uneven, the deeper pile side friction strength is larger, the shallower pile side friction strength is smaller, and especially in a shallower range below the stratum surface, as the pile body and the stratum repeatedly move back and forth for a long time, a gap appears between the side wall of the pile body and the stratum soil body, so that the pile side friction strength is close to zero, meanwhile, the connection workload of the pile body and an external connecting member is larger, the pile is uneconomical and not environment-friendly, the mechanical efficiency is low, especially when a precast pile is adopted, pile driving can also cause soil compaction, the adjacent constructed pile and an adjacent building incline and drift, and when a bored pile is adopted, a large amount of residual mud is generated to be abandoned outside, and the pile is not environment-friendly.

Disclosure of Invention

The invention provides a uplift pile, a pile structure, a pile body, a base, a fixedly connected component and a construction method, which are used for solving the technical problems that the pile body is easy to repeatedly move up and down relative to a stratum in the use process of the existing uplift pile, so that the embedding and loosening between the pile body and the stratum are caused, the uplift bearing capacity is reduced and even fails, the connection workload of the pile body and an external connecting component is large, and the uplift pile is uneconomical, not environment-friendly, low in mechanical efficiency and the like.

The technical scheme adopted by the invention is as follows:

a uplift pile comprising: pile holes formed by extending the surface of the pile hole inwards towards the stratum, and pile structures arranged in the pile holes along the axial direction of the pile holes; the pile structure comprises a pile body and tie bars, wherein the pile body is a structural object formed by reinforced concrete or/and a steel structure, the pile body is embedded and fixed at the lower end of a pile hole, the lower end of each tie bar is connected with the pile body, and the upper end of each tie bar is positioned above a pile hole orifice of the pile hole and used for connecting an external connecting member; the pile hole is characterized in that a hollow pile without a pile body is arranged between the top surface of the pile body and the hole opening of the pile hole, and the hollow pile is a pile hole cavity, or/and is backfilled soil in the pile hole cavity, or/and is self-falling soil with retracted or/and slumped soil on the hole wall soil layer of the pile hole cavity.

Further, the length of the empty pile is greater than half the length of the pile body, and/or the length of the empty pile is greater than 5 times the outer diameter of the pile body.

Further, the uplift pile further comprises a protection cylinder for protecting the upper end of the lacing wire, wherein the protection cylinder is sleeved on the outer circle of the upper end of the lacing wire along the axial direction and extends upwards into the external connecting component; or, the uplift pile further comprises a protection barrel assembly for protecting the upper end of the lacing wire, and the protection barrel assembly comprises: the anti-corrosion device comprises a protective cylinder sleeved on the excircle of the upper end of the lacing wire along the axial direction and extending upwards into the outer connecting component, a sealing material connected to the lower opening end of the protective cylinder in a sealing way, and an anti-corrosion material filled in the protective cylinder.

Further, the uplift pile further comprises a water filtering pipe which is axially inserted into the hollow pile, and the water filtering pipe is provided with a water permeable pipe wall.

According to another aspect of the present invention there is also provided a pile structure for a uplift pile as claimed in any one of the above, comprising: the pile body and the lacing wire, one end of the lacing wire stretches into the pile body along the axial direction and then is connected with the pile body; the length of the exposed section of the lacing wire exposed out of the pile body is larger than 60 times of the diameter of the lacing wire.

Further, the pile structure also comprises a sleeve sleeved on the outer circle of the exposed section of the lacing wire; the sleeve is filled with a lubricating material.

Further, the pile structure further comprises a pile shoe having a cavity for receiving a member surrounding the bottom of the pile body.

Further, the pile structure also comprises a conveying pipe or/and a grouting pipe which are arranged in parallel on the exposed section of the lacing wire, and the conveying pipe or/and the grouting pipe are respectively connected with the exposed section of the lacing wire.

Further, the pile structure also comprises an empty pile pipe arranged along the axial direction, and the lower end of the empty pile pipe is detachably connected with the top end of the pile body through an adapting hole or an adapter arranged at the top end of the pile body; the lacing wire or the lacing wire and the conveying pipe or/and the grouting pipe are/is arranged in the hollow pile pipe in a penetrating way along the axial direction.

Further, the hollow pile pipe is hollow tubular; or the hollow pile pipe comprises a hollow tubular hollow pile pipe body, wing plates vertically sleeved on the outer circle of the lower end of the hollow pile pipe body, and rib plates which are sequentially arranged at intervals along the circumferential direction and are connected between the outer circle surface of the hollow pile pipe body and the wing plates; the lacing wire or the conveying pipe or/and the grouting pipe is/are arranged in the hollow pile pipe body in a penetrating way along the axial direction.

Further, the lower end of the hollow pile tube is inserted into the adapting hole and is abutted to the bottom of the adapting hole; or the lower end of the hollow pile tube is in threaded connection with the adapting hole or the adapter; or the lower end of the hollow pile tube is detachably clamped with the adapting hole or the adapter.

According to another aspect of the present invention, there is also provided a pile body for a pile structure as set forth in any one of the above, the pile body being provided with a central passage through which tie bars axially pass; the top end of the pile body is provided with a concave adapting hole or is connected with an adapter so as to detachably connect the empty pile pipe.

Further, the pile body is a reinforced concrete pile; or the pile body is a steel pipe, and a pile bottom plate is arranged at the bottom of the steel pipe; or the pile body comprises a pile top plate, a pile bottom plate and at least three upright posts, wherein the pile top plate is welded at the top ends of the upright posts, and the pile bottom plate is welded at the bottom ends of the upright posts.

Further, a steel plate is arranged at the bottom of the adapting hole and is used for abutting against the bottom end of the empty pile pipe; or the wall of the adaptive hole is provided with an internal thread for being in threaded connection with an external thread of the hollow pile pipe; or, the wall of the adapting hole is provided with a clamping ring which is used for being detachably clamped with a first lug arranged on the outer wall of the lower end of the empty pile pipe.

Further, the adapter consists of a supporting plate and an adapter cylinder, wherein the adapter cylinder is vertical to the supporting plate and is integrated with the supporting plate, the adapter cylinder is positioned in the central channel, and the inner wall of the adapter cylinder is provided with internal threads for being in threaded connection with external threads arranged at the lower end of the hollow pile tube; or, the lower end of the inner wall of the adapter tube is provided with a clamping ring which is used for being detachably clamped with a first protruding block arranged on the outer wall of the lower end of the empty pile tube.

Further, the adapter consists of a supporting plate and an adapter cylinder, wherein the adapter cylinder is vertical to the supporting plate and is integrated with the supporting plate, the adapter cylinder is positioned outside the central channel, and the outer wall of the adapter cylinder is provided with external threads for being in threaded connection with internal threads arranged at the lower end of the hollow pile tube; or, the outer wall of the lower end of the adapter tube is provided with a second bump which is used for being clamped with the clamping lug arranged on the inner wall of the lower end of the empty pile tube.

According to another aspect of the present invention, there is also provided a base for connection of a tie bar in any one of the above-mentioned uplift piles and a tie bar in any one of the above-mentioned pile structures, a pile body in any one of the above-mentioned uplift piles, a pile body in any one of the above-mentioned pile structures and a pile body in any one of the above-mentioned pile structures, the base including upper and lower plates disposed at opposite intervals, and a connection pipe connected between the upper and lower plates; the bottom end fixing of upper plate and pile body, the connecting pipe is used for supplying the lacing wire to penetrate.

According to another aspect of the present invention there is also provided a fastening assembly for connection of a tie bar in a uplift pile as described above and a tie bar in a pile structure as described above, with a pile body in a uplift pile as described above, a pile body in a pile structure as described above and a pile body as described above, comprising: a connecting plate and a fixing piece; the connecting plate is arranged at the bottom end of the pile body or the bottom end of the base, and is provided with a mounting hole for the lacing wire to pass through; the connecting plate or the fixing piece is connected with the pile body, or the connecting plate or the fixing piece is connected with the lower plate of the base; the fixing piece is used for fixing the lower end of the lacing wire on the connecting plate after the lacing wire penetrates into the mounting hole.

Further, the mounting hole is a conical hole with the inner diameter gradually decreasing from bottom to top; the fixing piece comprises a pressing plate positioned below the connecting plate and a cone which is arranged corresponding to the conical hole and can be folded inwards under the stress; the cone is used for extruding into the gap between the lacing wire and the conical hole from bottom to top, so as to be used for inwards gathering and clamping the lacing wire under the action of the conical hole in the process of extruding upwards; a pressure plate is attached to the bottom end of the pile body or to the base of claim 17 for preventing the cone from falling out of the tapered hole.

Further, the fixing piece comprises a pressing plate positioned below the connecting plate and a clamping head fixed on the excircle of the lower end of the lacing wire; the pressing plate is connected with the bottom end of the pile body or the base of claim 17; the clamping head is positioned between the connecting plate and the pressing plate and is used for propping up the connecting plate under the acting force of the lacing wire.

Further, the fixing piece is a fixing nut, the fixing nut is fixed with the connecting plate, and the lower end of the lacing wire is in threaded connection with the fixing nut.

According to another aspect of the present invention, there is provided a construction method for making a pile structure according to any one of the above and driving into the ground to form a uplift pile according to any one of the above, comprising the steps of: s1: manufacturing a pile body with a central channel according to the designed pile body shape and size; s2: penetrating the lower section of the lacing wire into the central channel of the pile body and connecting the lower section of the lacing wire with the pile body, and exposing the upper section of the lacing wire outside the central channel; when the conveying pipe or/and grouting pipe is designed, the conveying pipe or/and grouting pipe and the lacing wire are arranged in parallel and are arranged on the lacing wire; s3: penetrating the lacing wire into the hollow pile pipe, penetrating the conveying pipe or/and the grouting pipe into the hollow pile pipe together with the lacing wire when the conveying pipe or/and the grouting pipe is designed, and detachably connecting the lower end of the hollow pile pipe with the top end of the pile body through an adapting hole or an adapter arranged at the top end of the pile body; s4: applying force to the upper end of the hollow pile pipe by adopting a pile driver, and driving the pile structure into a designed depth position in the stratum; s5: and (3) detaching the empty pile pipe from the pile body, and pulling out the empty pile pipe from the stratum so as to form an empty pile between the top surface of the pile body and the pile hole opening.

According to another aspect of the present invention, there is also provided a construction method of a uplift pile as set forth in any one of the above, comprising the steps of: t1: drilling holes in the stratum according to the designed diameter and depth of the pile body to form pile holes; t2: connecting the lower end of the lacing wire with a reinforcement cage, placing the reinforcement cage and the lacing wire at the bottom of the pile hole together, and positioning the upper end of the lacing wire above the orifice of the pile hole; or connecting the lower end of the lacing wire with a reinforcement cage, arranging a conveying pipe or/and grouting pipe and the lacing wire in parallel and installing the lacing wire at the design position of the lacing wire, then placing the reinforcement cage and the lacing wire at the bottom of a pile hole, and enabling the conveying pipe or/and grouting pipe to enter the pile hole together so that the lacing wire and the upper end of the conveying pipe or/and grouting pipe are positioned above the orifice of the pile hole; t3: and pouring concrete into the pile hole to form a pile body with the diameter, the length and the embedding depth meeting the design requirements, so that an empty pile is formed between the top surface of the pile body and the hole opening of the pile hole.

The invention has the following beneficial effects:

in the uplift pile structure, as the pile body is empty between the top surface of the pile body and the pile hole opening, and the external connecting component and the cushion layer thereof are not in direct contact with the pile body, when the external connecting component subsides downwards to generate pressure on the surface of the stratum, the external connecting component and the cushion layer thereof can not directly transmit the pressure to the pile body and only transmit the pressure through the stratum soil body, so that the pile body can not displace downwards relative to the stratum, can not repeatedly displace upwards and downwards relative to the stratum, the friction strength, especially the long-term friction strength, of the pile body and the stratum is ensured, and the larger friction strength reduction or failure risk can not occur.

Compared with the use of the whole pile body in the prior art, the anti-pulling pile structure only comprises a small pile body and the lacing wires for connecting the pile bodies, the length of the pile body is obviously shortened, the bearing capacity of the anti-pulling pile is improved, meanwhile, the construction of a large number of pile bodies can be effectively saved, so that the economic value is higher, in addition, when the pile body is actually applied, the shorter pile body is buried in a deeper position in the ground, and the advantage of high friction strength between a stratum soil body and the side of the pile body in the deeper position is utilized, so that the larger anti-pulling bearing capacity is obtained, and the mechanical efficiency of the pile body is greatly improved. In the uplift pile structure, the top surface of the pile body is the empty pile, particularly when the empty pile is a pile hole cavity, the problem of soil compaction caused by piling of a precast pile can be solved, and when a bored pile is adopted, the empty pile can be backfilled with residual soil, so that the external discarding amount of the residual soil is reduced, and the invention is beneficial to environmental protection.

In addition, in the uplift pile structure, the soil backfilling or self-falling soil generated by the vibration and extrusion actions of the subsequent adjacent piling is utilized to fill the pile hole cavity, the filled soil and the stratum undisturbed soil are fixedly combined into a whole, so that the pile body has better embedding effect, and the uplift bearing capacity of the pile body is higher than that of the uplift pile in the prior art. The anti-pulling pile is a great breakthrough to the traditional anti-pulling pile, and has wide practical value.

In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 is a schematic view of an embodiment of a pile structure according to the present invention;

FIG. 2A is a schematic view of an embodiment of a pile hole cavity for a uplift pile hollow pile according to the present invention;

FIG. 2B is a schematic view of an embodiment of the invention in which the hollow pile is a backfill soil body;

FIG. 2C is a schematic view of an embodiment of soil body with a hollow pile of a uplift pile according to the present invention with a retracted or/and slumped soil layer on the wall of the pile hole cavity;

FIG. 2D is a schematic view of an embodiment of the invention in which a hollow pile is provided with a water filter;

FIG. 3A is a schematic representation of an embodiment of a uplift pile of the present invention with a protective casing (lacing wires are steel bars);

FIG. 3B is a schematic representation of a second embodiment of the uplift pile of the present invention with a protective casing (lacing wires are steel strands);

FIG. 4 is a schematic view of the pile structure of the present invention (the lacing wire is sleeved with a sleeve);

FIG. 5 is a second schematic view of the pile structure of the present invention (with a feed pipe and a grouting pipe mounted on the tie bar);

FIG. 6A is a schematic view of an embodiment of a pile body structure with an adapting hole according to the present invention;

FIGS. 6B-6C are schematic illustrations of two pile structure embodiments of the present invention having an adapter;

FIGS. 7A-7B are schematic views of two connection modes of a pile body and a pile shoe of the concrete structure of the invention;

FIG. 7C is a schematic view of a pile body and pile shoe connection of the steel pipe structure of the present invention;

FIG. 7D is a schematic view of a pile body and pile shoe connection according to the present invention;

FIG. 8 is a schematic view showing the detachable connection of an empty pile pipe in the pile structure with a pile body through an adapting hole;

FIG. 9 is a schematic diagram showing the detachable connection of an empty pile pipe in a pile structure with a pile body through an adapter;

FIG. 10 is a schematic diagram II of the detachable connection of an empty pile pipe in a pile structure with a pile body through an adapter;

FIG. 11 is a schematic diagram III of the detachable connection of an empty pile pipe in a pile structure with a pile body through an adapter;

FIG. 12 is a schematic diagram showing the detachable connection of an empty pile pipe in a pile structure with a pile body through an adapter;

FIGS. 13A-13B are schematic illustrations of two blank pile tube embodiments;

FIG. 14A is a schematic view of a pile structure with a shoe and a base;

FIG. 14B is a schematic view of the base embodiment of FIG. 14A;

FIG. 15A is a second schematic view of a pile structure with a shoe and a base;

FIG. 15B is a schematic view of the base embodiment of FIG. 15A;

FIG. 16A is a schematic view of a pile structure with a shoe and a securing assembly;

FIG. 16B is a schematic view of the pile body, tie bar and fastening assembly of FIG. 16A;

FIG. 16C is a schematic view of the fastening assembly of FIG. 16A;

FIG. 17A is a schematic view of the mating structure of a pile body, tie bars and another fastening assembly;

FIG. 17B is a schematic view of the fastening assembly of FIG. 17A;

FIG. 18A is a schematic view of a pile body, tie bars, and a third fastening assembly;

FIG. 18B is a schematic view of the fastening assembly of FIG. 18A;

FIG. 19 is a schematic view of a pile structure having a pile shoe, a base, and a first fastening assembly;

FIG. 20 is a schematic view of a pile construction having a pile shoe, a base, and a second fastening assembly;

FIG. 21 is a schematic view of a pile construction with a pile shoe, a foundation and a third fastening assembly;

FIG. 22 is a schematic view of pile driving by a high-frequency vibration hammer during construction of the uplift pile of the present invention;

FIG. 23 is a schematic view of pile driving by hammering during construction of the uplift pile according to the present invention;

FIG. 24 is an enlarged view of a portion III of FIG. 22;

FIG. 25 is an enlarged view of a portion IV of FIG. 23;

FIG. 26A is a schematic diagram of a hole forming state during construction of a uplift pile according to the present invention;

fig. 26B is a schematic view of a reinforcement cage placed in a pile hole during construction of the uplift pile according to the present invention;

FIG. 26C is a schematic view of a pile body formed by concrete casting during construction of the uplift pile of the present invention;

FIG. 26D is a schematic view of an empty pile formed by backfilling soil in a pile hole cavity during construction of the uplift pile of the invention.

Description of the drawings

101. A reinforcement cage; 102. concrete; 1. pile construction; 11. a pile body; 111. a central passage; 112. an adapter hole; 1121. an internal thread; 113. a steel plate; 1131. a through hole; 114. an adapter; 1141. a support plate; 1142. an adapter tube; 11421. an internal thread; 11422. an external thread; 1143. a clasp; 1144. a second bump; 116. a connecting piece; 119. a pile bottom member; 1191. a pile bottom plate; 1192. a pile top plate; 1193. a steel pipe; 1194. a column; 12. lacing wires; 121. a sleeve; 1211. a lubricating material; 122. a first fastener; 123. a protective cartridge assembly; 1231. an anti-corrosive material; 1232. sealing material; 124. a material conveying pipe; 125. grouting pipe; 126. a second fastener; 13. a base; 131. an upper plate; 132. a connecting pipe; 133. a lower plate; 134. a screw; 135. a support bar; 14. pile shoe; 141. a cone; 142. a cylinder; 144. a mounting ring; 145. a bolt; 15. fixedly connecting the assembly; 151. a fixing member; 1511. a cone; 1512. a pressing plate; 1513. clamping and fixing the head; 1514. a fixing nut; 15141. an inner bore; 152. a connecting plate; 1521. a mounting hole; 153. a lock nut; 16. an empty pile pipe; 161. a wing plate; 1611. external threads of the hollow pile pipe; 1612. internal threads of the hollow pile pipe; 162. rib plates; 163. a first bump; 164. clamping ears; 2. empty piles; 21. pile hole cavity; 22. backfilling soil bodies; 23. self-dropping soil body; 24. a water filtering pipe; 3. a formation; 31. a ground surface; 32. pile holes; 33. a water pumping pipe; 34. a water pump; 35. pile hole opening; 4. an outer connecting member; 5. striking a hammer; 6. and (5) vibrating the hammer.

Detailed Description

Embodiments of the invention are described in detail below with reference to the attached drawing figures, but the invention can be practiced in a number of different ways, as defined and covered below.

Referring to fig. 1-3B, a preferred embodiment of the present invention provides a uplift pile comprising: pile holes 32 formed by the concave extension of the ground surface 31 into the stratum 3, and pile structures 1 distributed in the pile holes 32 along the axial direction of the pile holes 32; the pile structure 1 comprises a pile body 11 and tie bars 12, wherein the pile body 11 is a structural object formed by reinforced concrete or/and a steel structure, the pile body 11 is embedded and fixed at the lower end of a pile hole 32, the lower end of the tie bars 12 is connected with the pile body 11, and the upper end of the tie bars 12 is positioned above a pile hole orifice 35 of the pile hole 32 and used for connecting an external connecting member 4; between the top surface of the pile body 11 and the pile hole orifice 35 is a hollow pile 2 without the pile body in the pile hole 32, wherein the hollow pile 2 is a pile hole cavity 21, or/and is backfilled soil body 22 in the pile hole cavity 21, or/and is self-falling soil body 23 for retracting or/and slumping soil layer of the hole wall of the pile hole cavity 21.

In the uplift pile structure, the empty pile 2 is arranged between the top surface of the pile body 11 and the pile hole opening 35, and the external connecting member 4 and the cushion layer thereof are not in direct contact with the pile body 11, so that when the external connecting member 4 is settled downwards to generate pressure on the surface 31 of the stratum 3, the external connecting member 4 and the cushion layer thereof can not directly transmit the pressure to the pile body 11 and only transmit the pressure through stratum soil, the pile body 11 can not generate downward relative displacement relative to the stratum, the phenomenon of up-and-down repeated displacement relative to the stratum can not be generated, the friction strength of the pile body and the stratum, particularly the long-term friction strength, is ensured, and the risk of larger friction strength reduction or failure can not be generated.

Compared with the use of the whole pile body in the prior art, the anti-pulling pile structure only comprises the small pile body 11 and the lacing wire 12 for connecting the pile body 11, the length of the pile body 11 is obviously shortened, the bearing capacity of the anti-pulling pile is improved, meanwhile, the construction of a large number of pile bodies 11 can be effectively saved, so that the economic value is higher, in addition, in the actual construction, the shorter pile bodies 11 are buried in deeper positions in the ground, and the advantage of high friction strength between the soil body of the stratum 3 at the deeper position and the side of the pile bodies 11 is utilized, so that the larger anti-pulling bearing capacity is obtained, and the mechanical efficiency of the pile bodies 11 is greatly improved; in the uplift pile structure, the empty pile 2 is arranged above the top surface of the pile body, and particularly when the empty pile 2 is the pile hole cavity 21, the problem of soil compaction caused by piling of precast piles can be solved, residual sludge soil can be backfilled when a bored pile is adopted, the waste of the residual sludge soil is reduced, and the environment protection is facilitated.

In addition, in the uplift pile structure, the pile hole cavity 21 is filled with soil backfill or self-falling soil generated by vibration and extrusion of subsequent adjacent piling, and the filled soil and stratum undisturbed soil are fixedly combined into a whole, so that the pile 11 has better embedding effect, and the uplift bearing capacity of the pile 11 is higher than that of the uplift pile in the prior art. The anti-pulling pile is a great breakthrough to the traditional anti-pulling pile, and has wide practical value.

In this alternative, referring to fig. 1-3B, the tie bar 12 may be a long and thin rod with good tensile properties, such as a steel bar, a steel strand, a carbon fiber rod, or a glass fiber rod; specifically, the diameter of the steel bar is 40mm, the diameter of the steel strand is 15.2mm, and the length is 6-25 m. The pile body 11 can be made of reinforced concrete or steel structure processed by steel; pile body 11 is buried in the bottom of pile hole 32, and is located at a position of a buried depth H1 set below ground surface 31 of stratum 3, where buried depth H1 refers to a depth of the top surface of pile body 11 below the ground surface, and may be specifically 4 to 20m. The pile 11 has a length L1 and an outer diameter D, and the pile 11 can be a cylinder, a square cylinder or a polygonal cylinder; specifically, the length L1 of the pile 11 is generally 2-6 m, and the diameter D of the pile 11 is 0.3-0.8m. The pile body 11 may be precast pile (shown in fig. 2A-2C, 3A-3B, 4-12, 14A, 15A, 16A-16B, 17A, 18A, and 19-25) or concrete cast-in-place pile (shown in fig. 1, 2D, and 26C-26D). Pile body 11 is buried in stratum 3, pile body 11 is not directly connected as a whole with outer link member 4, but connects pile body 11 and outer link member 4 through tie bar 12, tie bar 12 transmits the pulling force between outer link member 4 and pile body 11. The empty pile 2 between the top surface of the pile body 11 and the pile hole opening 35 is a pile hole cavity 21, the empty pile 2 is formed by filling after piling, and the height of the empty pile 2 is H1. The empty pile 2 may be filled later, for example. The empty pile 2 shown in fig. 1 and 2A is a pile hole cavity 21, and has the best effect of solving the problem of pile driving and soil compaction.

Alternatively, referring to fig. 2B, 3A-3B, pile hole cavity 21 is filled with backfill soil 22 formed from a manual backfill soil. After piling, soil is poured into the pile hole cavity 21 to form a backfill soil body 22 (artificial filling). The backfill soil 22 can be plain filled soil or non-engineering strength soil such as miscellaneous filled soil. The backfill soil 22 is an unconsolidated soil, has no engineering strength, cannot bear force, and only plays a role in filling the pile hole cavity 21. But the backfill soil body 22 is slowly and naturally solidified and is fixedly integrated with the original soil body of the wall of the pile hole 32 near the upper end of the pile body 11, so that the embedding effect of the pile body 11 in the stratum 3 can be enhanced. According to theoretical research and experiments of the applicant, after the backfill soil body 22 has a certain consolidation degree, the fracture surface of the soil body can outwards and obliquely develop when reaching a limit state, rather than vertically upwards along the pile side as in the prior art uplift pile, and the uplift bearing capacity of the pile body 11 is reversely higher than that of the prior art uplift pile.

Alternatively, referring to fig. 2C, the borehole wall soil layer of the pile borehole cavity 21 is retracted or/and slumped to fill the formed self-falling soil body 23 (self-falling fill). When the soil of the stratum 3 is a fluid plastic silt and loose sand layer, pile hole 32 above the pile body 11 forms a pile hole cavity 21 after piling, no wall protection measure is adopted for the pile hole cavity 21, the soil on the wall of the pile hole cavity 21 can retract or/and collapse into the pile hole cavity 21, and particularly when the soil is extruded by the construction of adjacent piles, the soil on the wall of the pile hole cavity 21 can retract or/and collapse quickly, and the pile hole cavity 21 can be closed quickly. By utilizing the vibration and extrusion actions of the subsequent adjacent piling, the soil body on the wall of the pile hole cavity 21 is retracted or/and slumped to backfill the pile hole cavity 21, so that not only is the labor for backfilling saved, but also the problem of piling soil squeezing is solved or alleviated, and the pulling-resistant bearing capacity of the pile body 11 can be higher than that of the prior art pulling-resistant pile after the self-falling soil body 23 is reconsolidated.

Whether the empty pile 2 is a pile hole cavity 21 or backfill soil body 22 or a retracted or/and slumped self-falling soil body 23, the external connecting member 4 or a cushion layer thereof does not directly transmit the sinking pressure to the pile body 11. Because the hollow pile 2 separates the pile body 11 from the outer connecting member 4 (when a bedding layer is provided under the outer connecting member 4, the bedding layer is separated from the pile body 11). When the external connecting member 4 subsides downwards to generate pressure on the ground surface 31 of the stratum 3, the pressure is not directly transmitted to the pile body 11, and can only be transmitted to the pile body 11 through undisturbed soil around the wall of the pile hole 32 and backfilled soil 22 or retracted or/and slumped self-falling soil 23, so that the pile body 11 cannot displace downwards relative to the soil around the wall of the pile hole 32 of the stratum 3, and the adverse condition that the pile body 11 repeatedly displaces up and down relative to the stratum 3 is avoided.

The invention is equivalent to arranging the upper half section of the uplift pile in the prior art as the empty pile 2 without greatly influencing the uplift bearing capacity of the pile, but can save a large number of pile bodies 11, has high economic value and greatly improves the mechanical efficiency of the pile bodies 11. The pile body 11 is connected with the lacing wire 12, a shorter section of pile body 11 is buried in a deeper position of the underground, and the advantages of high friction resistance strength of the soil body of the deeper stratum 3 and the pile body 11 are utilized to obtain a large pulling-resistant bearing capacity, so that the engineering quantity of the pile body 11 is greatly saved, and the economical efficiency is good.

Alternatively, the length of the empty pile 2 is greater than half the length of the pile body 11, i.e. the length H1 of the empty pile 2 is greater than half the length L1 of the pile body 11, H1 > 0.5L1. When H1 > 0.5L1, the compression distance of the hollow pile 2 can be ensured to be large enough, and even if the external connecting member 4 is subjected to large sedimentation, the pressure is not directly transmitted to the pile body 11.

Alternatively, the length of the hollow pile 2 is greater than 5 times the outer diameter of the pile body 11, i.e. the length H1 of the hollow pile 2 is greater than 5 times the outer diameter D of the pile body 11, H1 > 5D. When H1 is more than 5D, the length of the empty pile 2 can ensure that the filled soil body has enough consolidation height after filling, and ensures the consolidation and combination effect of the filled soil body and surrounding undisturbed soil, so that the pile body 11 can be well consolidated, thereby obtaining larger pulling-resistant bearing capacity which can exceed that of the pulling-resistant pile in the prior art.

Optionally, the uplift pile further comprises a protection barrel for protecting the upper end of the lacing wire 12, wherein the protection barrel is sleeved on the outer circle of the upper end of the lacing wire 12 along the axial direction and extends upwards into the external connecting member 4. Alternatively, referring to fig. 3A-3B, the uplift pile further includes a protective tube assembly 123 for protecting an upper end of the tie bar 12, the protective tube assembly 123 including: the outer circle of the upper end of the lacing wire 12 is sleeved with the protection cylinder which extends upwards into the outer connecting component 4 along the axial direction, the sealing material 1232 which is connected with the lower opening end of the protection cylinder in a sealing way, and the anti-corrosion material 1231 which is filled in the protection cylinder in a sealing way. In this alternative, the tie bar 12 in fig. 3A is a steel bar, and the tie bar 12 in fig. 3B is a plurality of steel strands; with further reference to fig. 3A-3B, the tie bar 12 is sleeved with a protective barrel assembly 123 at the junction extending into the outer connecting member 4, the upper end of the protective barrel assembly 123 is positioned in the outer connecting member 4, and the lower end is positioned outside the bottom surface of the outer connecting member 4. The anti-pulling pile is characterized in that the upper end of the lacing wire 12 is provided with the protective cylinder assembly 123, so that the lacing wire 12 positioned in the junction area of the external connecting member 4 and the stratum 3 is enclosed in the protective cylinder assembly 123, the lacing wire 12 positioned in the junction area can be always isolated from groundwater and soil under the protection of the protective cylinder assembly 123 no matter how the lacing wire 12 is displaced when being stressed, and the corrosion of groundwater to the lacing wire 12 is avoided. The joint of the tie bar 12 extending into the external connecting member 4 is sleeved with the protective cylinder assembly 123, so that the problem of deformation coordination of the tie bar 12 and the external connecting member 4 and the problem of corrosion resistance of the tie bar 12 are solved, and the pile is more economical than the traditional pile with a special bearing platform.

In this alternative, referring to fig. 2D, in a specific embodiment of the uplift pile according to the present invention, when the hollow pile 2 is the pile hole cavity 21, a water filter pipe 24 is further disposed in the pile hole cavity 21, the diameter of the water filter pipe 24 is equal to or slightly smaller than the diameter of the pile hole cavity 21, and the water filter pipe 24 is inserted into the pile hole cavity 21, and has a water permeable pipe wall. The water filtering pipe 24 can be a steel reinforcement cage coated with a wire mesh or a gauze, or a steel pipe with water permeable holes on the pipe wall, or a sand-blacking pipe with water permeable pipe wall. The length of the water filtering pipe 24 can be directly inserted into the top surface of the pile body 11 according to design requirements, or the water filtering pipe 24 can be inserted after backfilling part of soil on the top surface of the pile body 11 (see fig. 2D). The water filter pipe 24 is inserted into the pile hole cavity 21 and used for supporting the hole wall of the pile hole cavity 21, sand and stone can be filled between the water filter pipe 24 and the hole wall of the pile hole cavity 21 if necessary, the pile hole cavity 21 can be used as a pumping well by utilizing the water permeable effect of the water filter pipe 24, a water pump 34 is arranged on the ground surface 31 of the stratum 3 during construction, and the groundwater in the pile hole cavity 21 is pumped through the water pumping pipe 33 so as to reduce the groundwater level and facilitate construction; during the operation of the uplift pile, groundwater in the pile hole cavity 21 is pumped through the water pumping pipe 33, the groundwater level is lowered, and the buoyancy of the pull-out member 4 is reduced. The smaller diameter drainage tube 24 may also be buried in the backfill soil 22 or the retracted or/and slumped self-falling soil 23 of fig. 2B and 2C for the extraction of groundwater (not shown).

Referring to fig. 4 and 5, the present invention further provides a pile structure 1 for the above-mentioned uplift pile, comprising: pile body 11 and lacing wire 12, the one end of lacing wire 12 stretches into pile body 11 along the axial and links with pile body 11. The length of the exposed section of the lacing wire 12 exposed out of the pile body 11 is larger than 60 times of the diameter of the lacing wire 12. In this alternative, the pile body 11 may be a concrete pile or a steel pile prefabricated outside the pile hole 32; the diameter of the tie 12 refers to the diameter of a single one of the steel bars or strands as the tie 12; the length L2 of the exposed section of the lacing wire 12 exposed out of the pile body 11 is larger than 60 times of the diameter of the lacing wire 12, so that the lacing wire 12 can be ensured to be easily bent under the action of sinking and pressing force of the external connecting member 4, the axial pressure which can be transmitted is very small and even negligible, and the pressure of the external connecting member 4 is ensured not to be transmitted to the pile body 11.

Optionally, as shown in fig. 4 and 5, the pile structure 1 further includes a sleeve 121 sleeved on the outer circle of the exposed section of the lacing wire 12. The sleeve 121 is filled with a lubricating material 1211. In this alternative, the sleeve 121 isolates the tie bar 12 from the hollow pile 2, and the lubricating material 1211 enables the tie bar 12 to be freely deformed in a telescopic manner when being stressed, so that the influence of the hollow pile 2 on the transmission of the tensile force between the pile body 11 and the external connecting member 4 is avoided or reduced.

Alternatively, as shown in fig. 7A-7D and 8, the pile structure 1 of the present invention further comprises a shoe 14, the shoe 14 having a cavity for receiving a member surrounding the bottom of the pile body 11.

In this alternative, referring to fig. 7A, 7C, 7D and 8, the pile shoe 14 includes a cone 141 and a cylinder 142, the upper end of the cylinder 142 is open, the lower end of the cylinder 142 is in butt joint with the upper end (large end) of the cone 141, the lower end of the cone 141 is a pointed tip, and the inner wall of the cylinder 142 is provided with internal threads. The outer surface of the lower end of the pile body 11 is provided with external threads, and the pile shoe 14 is connected with the threads of the lower end of the pile body 11 through the internal threads of the inner wall of the cylinder 142, so that the pile shoe 14 is fixed at the bottom end of the pile body 11.

In this alternative, referring to fig. 7B, in the second embodiment of the pile shoe 14, the pile shoe 14 may also directly use a cone 141, where a mounting ring 144 is disposed on the edge of the large end of the cone 141 and extends radially outwards, and bolts 145 penetrate through holes disposed in the mounting ring 144 to fix the pile shoe 14 at the bottom end of the pile body 11. The pile shoe 14 can cover the bottom of the pile body 11, can accommodate a member surrounding the bottom of the pile body 11, protects the bottom member of the pile body 11 from being damaged, and is beneficial to reducing resistance during piling.

Optionally, referring to fig. 5, the pile structure 1 further includes a material conveying pipe 124 or/and a grouting pipe 125 disposed parallel to the exposed section of the tie bar 12, and the material conveying pipe 124 or/and grouting pipe 125 is connected to the exposed section of the tie bar 12, respectively. In the alternative, the lower ends of the conveying pipe 124 and the grouting pipe 125 extend into the vicinity of the top surface of the pile body 11, and the upper ends of the conveying pipe and the grouting pipe are exposed out of the pile hole opening 35; the conveying pipe 124 is used for conveying dry materials such as plain fill dry materials, miscellaneous fill dry materials and the like to the pile hole cavity 21; grouting pipe 125 is used to deliver slurry, such as mud, to pile hole cavity 21, such that pile hole cavity 21 is backfilled with soil body 22. After the construction of the uplift pile is finished, the conveying pipe 124 and/or the grouting pipe 125 can be pulled out for recycling.

Optionally, referring to fig. 8-12 and 24-25, the pile structure 1 of the present invention further includes an axially disposed hollow pile tube 16, and the lower end of the hollow pile tube 16 is detachably connected to the top end of the pile body 11 through an adapting hole 112 or an adapter 114 provided at the top end of the pile body 11. The tie bar 12, or the tie bar 12, and the feed pipe 124 and/or the grouting pipe 125 are/is axially inserted into the hollow pile pipe 16. In this alternative, since the lower end of the hollow pile tube 16 is detachably connected with the adapting hole 112 or the adapter 114 provided at the top end of the pile body 11, the pile tube 16 transmits the driving force to the pile body 11 during driving, and the hollow pile tube 16 can be detached from the pile body 11 after driving so as to be pulled out from the stratum 3.

The hollow pile tube 16 may be a straight steel tube, or a wing plate 161 and at least two ribs 162 shown in fig. 11 and 13A-13B may be disposed at the lower end of the hollow pile tube 16, the peripheral diameter of the wing plate 161 is smaller than or equal to the peripheral diameter of the pile body 11, and the ribs 162 are triangular plates having two right-angle sides and welded to the plate surface of the wing plate 161 and the peripheral surface of the lower end of the hollow pile tube 16, respectively. By adopting the wing plates 161, the empty pile pipe 16 can uniformly apply force on the pile body 11, so that the damage to the top of the pile body 11 during pile driving is avoided.

The lower end of the hollow pile tube 16 is detachably connected with the top end of the pile body 11 through an adapting hole 112 or an adapter 114 arranged at the top end of the pile body 11 in the following concrete manner: the lower end of the hollow pile tube 16 is inserted into the adapting hole 112 at the top end of the pile body 11 and is pressed against the bottom of the adapting hole 112; alternatively, an internal thread is arranged in the wall of the adapting hole 112, and the lower end of the hollow pile tube 16 is in threaded connection with the adapting hole 112; alternatively, the top end of the pile body 11 is provided with an adapter 114, and the hollow pile tube 16 is in threaded connection with the adapter 114; alternatively, the lower end of the hollow pile tube 16 is detachably clamped with the adapting hole 112 or the adapter 114.

Referring to fig. 6A, 7A-7B and 8, the adapting hole 112 is formed by recessing the top end of the pile body 11, a steel plate 113 is arranged at the bottom of the adapting hole 112, the steel plate 113 is embedded in the bottom of the adapting hole 112, and a through hole 1131 is formed in the center of the steel plate 113, so that the lacing wire 12 passes through the through hole 1131 in the center of the steel plate 113. When piling, the lower end of the empty pile pipe 16 is inserted into the adapting hole 112, the bottom of the empty pile pipe is propped against the steel plate 113, and the steel plate 113 receives the piling force transmitted by the lower end of the empty pile pipe 16, so that the concrete of the pile body 11 is prevented from being damaged. After the hollow pile tube 16 drives the pile body 11 into the ground 3, the hollow pile tube 16 is pulled upward to separate the hollow pile tube 16 from the pile body 11 and pull out the hollow pile tube from the ground 3.

Referring to fig. 6A and 24, an inner thread 1121 is provided on the wall of the adapting hole 112, and an outer thread 1611 (see fig. 24) is provided on the outer wall of the lower end of the hollow pile tube 16, and the lower end of the hollow pile tube 16 is in threaded connection with the adapting hole 112. The method for setting the internal thread 1121 in the adapting hole 112 may be to pre-embed a steel cylinder with the internal thread 1121 in the adapting hole 112 when manufacturing the pile body 11, or to cast the concrete of the pile body 11 with a mold with threads to form the internal thread 1121 on the inner wall. When piling, the lower end of the hollow pile tube 16 is screwed into the adapting hole 112 and is in threaded connection with the adapting hole 112, so that the hollow pile tube 16 is detachably connected with the adapting hole 112 and the piling force transmitted by the lower end of the hollow pile tube 16 is received by the threaded joint surface of the hollow pile tube 16 and the adapting hole 112. After pile body 11 is driven into ground 3, reverse rotation of hollow pile tube 16 may disengage hollow pile tube 16 from pile body 11 and withdraw hollow pile tube 16 from ground 3.

Referring to fig. 6B-6C, fig. 9-12, adapter 114 is comprised of a support plate 1141 and an adapter cylinder 1142, the support plate 1141 being perpendicular to and integral with the center line of adapter cylinder 1142. The adaptor 114 is provided with two forms at the top end of the pile 11: first, the adapter tube 1142 is inserted downward into the central channel 111 of the pile 11, and the support plate 1141 is fixed to the top of the pile 11. Referring to fig. 9, the inner hole wall of the adapter tube 1142 in this form is provided with an inner thread 11421, the lower end of the hollow pile tube 16 is provided with an outer thread 1611 of the hollow pile tube, and the outer thread 11421 is in threaded connection with the inner thread 11421 on the inner hole wall of the adapter tube 1142, so that the hollow pile tube 16 is detachably connected with the adapter 114, at this time, the wing plate 161 of the hollow pile tube 16 is pressed against the supporting plate 1141, and the supporting plate 1141 receives the piling force transmitted by the lower end of the hollow pile tube 16. After piling is completed, the empty pile pipe 16 is pulled out by reversely rotating the empty pile pipe 16 to disengage the empty pile pipe 16 from the adapter 114. Alternatively, referring to fig. 11, a collar 1143 may be disposed at the lower end of the inner wall of the adapter tube 1142, a first protrusion 163 may be disposed on the outer wall of the lower end of the hollow pile tube 16, the lower end of the hollow pile tube 16 may be inserted into the adapter tube 1142, and the hollow pile tube 16 may be rotated by a certain angle, such that the first protrusion 163 is located below the collar 1143 and aligned with the collar 1143, thereby enabling the lower end of the hollow pile tube 16 to be detachably clamped with the adapter 114. When piling, the wing plate 161 at the lower end of the empty pile pipe 16 is pressed against the supporting plate 1141, and the supporting plate 1141 receives the piling force transmitted by the lower end of the empty pile pipe 16. After piling is completed, the empty pile pipe 16 can be pulled out by rotating the empty pile pipe 16 to enable the first protruding block 163 to be separated from the aligned position of the clamping ring 1143. Secondly, the supporting plate 1141 is fixed on the top of the pile body 11, and the adapting tube 1142 is disposed upwards and is located outside the central channel 111 of the pile body 11. Referring to fig. 10, the outer surface of the adapter tube 1142 is provided with external threads 11422, and the inner wall of the lower end of the hollow pile tube 16 is provided with hollow pile tube internal threads 1612, which are in threaded connection with the external threads 11422 of the outer surface of the adapter tube 1142, so that the hollow pile tube 16 is detachably connected with the adapter 114. When piling, the wing plate 161 of the empty pile pipe 16 is pressed against the supporting plate 1141, and the supporting plate 1141 receives the piling force transmitted by the lower end of the empty pile pipe 16. After piling is completed, the empty pile pipe 16 is pulled out by reversely rotating the empty pile pipe 16 to disengage the empty pile pipe 16 from the adapter 114. Referring to fig. 12, a second bump 1144 may be further disposed on the outer wall of the lower end of the adapter tube 1142, and a locking lug 164 may be disposed on the inner wall of the lower end of the hollow pile tube 16, so that the lower end of the hollow pile tube 16 is sleeved on the adapter tube 1142, and rotated by a certain angle to enable the locking lug 164 to be located under the second bump 1144 and aligned with the second bump 1144, thereby enabling the hollow pile tube 16 to be detachably locked with the adapter 114. When piling, the lower end of the empty pile pipe 16 is pressed against the supporting plate 1141, and the supporting plate 1141 receives the piling force transmitted by the lower end of the empty pile pipe 16. After piling is completed, the empty pile pipe 16 is rotated to enable the clamping lugs 164 to be separated from the second protruding blocks 1144, and the empty pile pipe 16 can be separated from the pile body 11 and pulled out of the stratum 3 by pulling up the empty pile pipe 16.

The invention also provides a concrete embodiment of the pile body 11 for the pile structure 1. Referring to fig. 1-12, 14A, 15A, 16A, 17A, 18A, 19-21, 24-25 and 26C-26D, the pile body 11 adopts a cylindrical structure, may be a cylinder or a square cylinder (fig. 15A), and is axially provided with a central channel 111 for penetrating the lacing wire 12 (see fig. 6A-7D). The pile body 11 may be a concrete pile, the top of the pile body 11 may be provided with an adapting hole 112 or an adapter 114, and the bottom may be provided with a pile bottom plate 1191 for connection with a bottom member (see fig. 6B-6C, 14A, 15A, 19-21); or steel tube 1193, pile bottom plate 1191 is arranged at the bottom of steel tube 1193, and adapter 114 is connected to the top of steel tube (see fig. 7C); pile body 11 may also include a pile top plate 1192, a pile bottom plate 1191, and at least three columns 1194, where pile top plate 1192 is welded to the top ends of columns 1194, pile bottom plate 1191 is welded to the bottom ends of columns 1194, and combined to form pile body 11, top plate 1192 is connected to the top of columns 1194, and top plate 1192 is connected to adapter 114 (see fig. 7D).

Referring to fig. 6A and 7A-7B, in the embodiment of the pile body 11 according to the present invention, a connecting member 116 is disposed at the bottom end of the pile body 11, the connecting member 116 may be a screw rod of a bolt, one end of the connecting member 116 is pre-buried in the pile body 11, or fixedly connected to the pile body 11 by welding or the like, and one end of the screw rod with external threads extends out to expose a length as a member connected to the pile body 11 when the fixing tie bar 12 is installed.

Referring to fig. 14A-15B and fig. 19-21, the present invention further provides a base 13 for connecting the pile body 11 and the tie bars 12 in the pile structure 1, where the base 13 includes an upper plate 131 and a lower plate 133 disposed at opposite intervals, and a connecting pipe 132 connected between the upper plate 131 and the lower plate 133. The upper plate 131 is fixed with the bottom end of the pile body 11, and the connecting pipe 132 is used for penetrating the lacing wires 12. Because the pile body 11 is generally produced in a large scale in a factory after determining several moduli, in order to adapt to the specific requirements of ever-changing actual engineering, the invention adopts the base 13 to be in butt joint with the pile body 11, solves the contradiction between the large-scale prefabrication of the factory and the requirements of each construction site, improves the universality of the pile body 11 and can obtain the overall optimal technical effect.

Referring to fig. 7A-8 and 16A-21, the present invention further provides a fastening assembly 15 for connecting the pile body 11 and the tie bar 12 in the pile structure 1, which includes: a connection plate 152 and a fixing member 151. The connecting plate 152 is disposed at the bottom end of the pile 11, or the bottom end of the base 13, and the connecting plate 152 is provided with a mounting hole 1521 through which the tie bar 12 passes. The connection plate 152 or the fixing member 151 is connected to the pile body 11, or the connection plate 152 or the fixing member 151 is connected to the lower plate 133 of the base 13 as described above. The fixing member 151 is used for fixing the lower end of the tie bar 12 to the connection plate 152 after the tie bar 12 penetrates the mounting hole 1521.

Alternatively, in the first embodiment of the fastening assembly 15, referring to fig. 16A-16C and 19, the mounting hole 1521 is a tapered hole with an inner diameter gradually decreasing from bottom to top; the fixing piece 151 comprises a pressing plate 1512 positioned below the connecting plate 152, and a cone 1511 which is arranged corresponding to the conical hole and can be folded inwards under the force; the cone 1511 is used for extruding into a gap between the lacing wire 12 and the conical hole from bottom to top, and is used for inwards gathering and clamping the lacing wire 12 under the action of the conical hole in the process of extruding upwards; a pressure plate 1512 is attached to the bottom end of the pile 11 or to the base 13 as described above for preventing the cone 1511 from falling out of the tapered bore. In this alternative, the cone 1511 is formed by surrounding wedge blocks which are arranged in sequence along the circumferential direction and have thin upper ends and thick lower ends. The cone 1511 can be 2-4 pieces, and the lacing wire 12 can be a steel bar or a steel strand. After the tie bar 12 penetrates into the mounting hole 1521, the upper end of the cone 1511 is inserted into a gap between the tie bar 12 and the mounting hole 1521 from the bottom end of the connecting plate 152, and is spliced and combined around the tie bar 12, and the tie bar 12 is wedged and fixed on the inner wall of the mounting hole 1521 by utilizing the oblique extrusion force of the wedge-shaped structure of the cone 1511, so that the tie bar 12 is fixed on the connecting plate 152. In order to avoid the loosening of the tie bar 12 from the connection plate 152 caused by downward displacement of the cone 1511 during the placement of the pile 11, when the cone 1511 is inserted into the mounting hole 1521, the lower end of the cone 1511 is exposed out of the mounting hole 1521, and meanwhile, a pressing plate 1512 is disposed below the bottom end of the connection plate 152 for abutting against the cone 1511. The pressing plate 1512 is provided with a through hole (not shown) for the tie bar 12 to pass through, the installation position of the through hole corresponds to the installation hole 1521, the axes of the through hole and the installation hole are on the same straight line, when the pressing plate 1512 is propped against the bottom end of the cone 1511 exposed out of the installation hole 1521, the pressing plate 1512 is connected with the connecting piece 116 on the pile body 11, and the through hole is fixed by the locking nut 153, so that the pressing plate 1512 is always propped against the cone 1511 while being connected with the pile body 11. In this way, even when the connecting plate 152 receives downward force, the cone 1511 can always wedge the lacing wire 12 on the connecting plate 152 without loosening, and meanwhile, the lacing wire 12 is stably and reliably installed and fixed on the pile 11 through the connection of the pressing plate 1512 and the pile 11. Referring to fig. 19, when the tie bar 12, to which the base 13 serves as an intermediate connection member to fix the fastening assembly 15, is mounted on the pile body 11, the upper plate 131 on the base 13 is connected to the pile body 11 through the pile bottom member 119, and the pressing plate 1512 is connected to the lower plate 133 through the screw 134 on the lower plate 133 of the base 13 to press the lower end of the cone 1511.

Alternatively, referring to fig. 17A-17B and 20, the fixing member 151 includes a pressing plate 1512 located below the connecting plate 152, and a fastening head 1513 fixed to an outer circle of a lower end of the tie bar 12. The pressure plate 1512 is connected to the bottom end of the pile 11 or the base 13 as described above. The fastening head 1513 is located between the connection plate 152 and the pressing plate 1512 for pressing the connection plate 152 under the force of the tie bar 12. In this alternative, the fastening head 1513 is fixedly installed at the lower end of the tie bar 12 in advance by an extrusion tool, and the outer diameter of the fastening head 1513 is larger than the aperture of the installation hole 1521. The pressing plate 1512 is located below the connection plate 152, and is provided with a mounting hole for passing the tie bar 12 and a through hole (not shown) for passing the connection member 116 (screw) in the axial direction. During installation, one end of the tie bar 12 without the clamping head 1513 passes through the installation hole 1521 on the connecting plate 152, then passes through the central channel 111 of the pile body 11, the connecting plate 152 is tightly attached to the bottom surface of the pile body 11, the top end of the clamping head 1513 is tightly abutted to the bottom surface of the connecting plate 152, the pressing plate 1512 abuts against the bottom end of the clamping head 1513, the clamping head 1513 is clamped between the connecting plate 152 and the pressing plate 1512, the connecting piece 116 at the bottom end of the pile body 11 passes through the through hole on the pressing plate 1512 and is fixed through the locking nut 153, so that the pressing plate 1512 is connected with the pile body 11 and is positioned and fixed at the bottom end of the clamping head 1513, and the tie bar 12 (steel bar or steel stranded wire) is installed and fixed on the pile body 11. Referring to fig. 20, when the tie bar 12, to which the fixing assembly 15 is fixed, is installed on the pile body 11 by the base 13 as an intermediate connection member, the upper plate 131 on the base 13 is connected to the pile body 11 through the pile bottom member 119, and the pressing plate 1512 presses the fastening head 1513 against the connection plate 152 by connecting the screw 134 on the lower plate 133 of the base 13 with the lower plate 133.

Alternatively, referring to fig. 18A-18B and 21, in the third embodiment of the fastening assembly 15, the fixing member 151 is a fixing nut 1514, the fixing nut 1514 is fixed to the connecting plate 152, and the lower end of the tie bar 12 is screwed to the fixing nut 1514. In this alternative, the connection plate 152 and the fixing nut 1514 are integrally cast or welded. The center of the fixing nut 1514 is provided with an inner hole 15141 which is in butt joint with the mounting hole 1521, the wall of the inner hole 15141 is provided with an inner thread which is matched with the outer thread of the lacing wire 12, the fixing nut 1514 is screwed with the lower end of the lacing wire 12, the lacing wire 12 is in threaded connection with the fixing nut 1514, and the lacing wire 12 is locked on the fixing nut 1514. The connecting piece 116 at the bottom end of the pile body 11 passes through the corresponding through hole on the connecting plate 152 and is fixed by the locking nut 153, the connecting plate 152 is fixedly connected with the pile body 11, and the lacing wire 12 (reinforcing steel bar) is installed and fixed on the pile body 11. Referring to fig. 21, when the tie bars 12, to which the fixing members 15 are fixed, are installed on the pile body 11 by the base 13 as an intermediate connection member, the upper plate 131 on the base 13 is connected to the pile body 11 through the pile bottom member 119, and the connection plate 152 is connected to the lower plate 133 through the screw 134 on the lower plate 133 of the base 13.

Referring to fig. 22-25, in the construction of the uplift pile of the present invention, a high-frequency vibratory hammer (fig. 22) or hammering (fig. 23) may be used to drive the pile, one end of the hollow pile pipe 16 is connected to the vibratory hammer 6 or the striking hammer 5 of the pile driver, the other end extends into the adapting hole 112 or the adapter 114 of the pile 11 to be detachably connected to the pile 11, the prefabricated pile 11 is driven into a position with a designed burying depth H, and the soil material or/and sand or/and slurry is further backfilled into the pile hole cavity 21 after the pile driving through the material conveying pipe 124 or/and the grouting pipe 125.

The invention also provides a construction method for manufacturing the uplift pile in the embodiment shown in fig. 2A-2C, which comprises the following steps:

s1: the pile body 11 having the central passage 111 is manufactured in accordance with the designed shape and size of the pile body 11.

Specifically, the length L of the pile body 11 can be made ₁ 3m, the diameter D is the precast reinforced concrete stake of 0.8m, and the pile body 11 bottom downwardly extending has 4 screw rod structure's connecting piece 116, and the screw rod has the one end of external screw thread to be arranged in outside the pile body 11.

S2: the lower section of the lacing wire 12 penetrates into the central channel 111 of the pile body 11 and is connected with the pile body 11, and the upper section of the lacing wire 12 is exposed out of the central channel 111.

The lacing wire 12 adopts a steel bar or a steel strand, and when the steel bar is adopted, the diameter of the steel bar is 40mm, and the length is 19m; when the steel stranded wires are adopted, 6 steel stranded wires can be adopted, the diameter of each steel stranded wire is 15.2mm, and the length of each steel stranded wire is 19m.

The bottom of the pile body 11 is provided with a fixedly connected component 15, the pile body 11 is connected with the fixedly connected component 15 through a connecting piece 116, and then the lower section of the lacing wire 12 penetrates through a central channel 111 of the pile body 11 to be fixed on the fixedly connected component 15, so that the lower end of the lacing wire 12 is fixedly arranged at the bottom of the pile body 11.

When the conveying pipe 124 or/and the grouting pipe 125 are designed, after the lower end of the lacing wire 12 is fixedly connected to the bottom of the pile body 11, the conveying pipe 124 or/and the grouting pipe 125 are arranged in parallel with the lacing wire 12 and are installed on the lacing wire 12, and the lower end of the conveying pipe 124 or/and the grouting pipe 125 is positioned above the pile body 11.

S3: penetrating the lacing wire 12 into the hollow pile pipe 16, penetrating the conveying pipe 124 or/and the grouting pipe 125 into the hollow pile pipe 16 together with the lacing wire 12 when the conveying pipe 124 or/and the grouting pipe 125 are designed, and detachably connecting the lower end of the hollow pile pipe 16 with the top end of the pile body 11 through an adapting hole 112 or an adapter 114 arranged at the top end of the pile body 11; the lower end of the hollow pile tube 16 abuts against the pile body 11.

S4: the pile structure 1 is driven into the stratum 3 at a designed depth position by applying force to the upper end of the hollow pile pipe 16 by a pile driver.

Specifically, referring to fig. 22 and 23, the pile structure 1 is driven into the position of the designed burying depth H1 by applying force to the upper end of the empty pile pipe 16 by using the high-frequency vibration hammer 6 or the striking hammer 5 in the pile driver; pile 11 burying depth H ₁ =14m, empty pile section L ₂ The length of the tie bar 12 exposed above the pile body 11 is about 16m, which is 14 m.

S5: the hollow pile tube 16 is detached from the pile body 11, so that the hollow pile 2 is formed between the top surface of the pile body 11 and the pile hole opening 35.

Specifically, after piling in place, the empty pile tube 16 is detached from the adapting hole 112 or the adapter 114 in the pile body 11, the empty pile tube 16 is pulled out, the empty pile 2 is formed between the top surface of the pile body 11 and the pile hole opening 35, the upper end of the lacing wire 12 is positioned above the pile hole opening 35, and the pile hole cavity 21 is backfilled at the later stage according to requirements.

Referring to fig. 8 and 25, after piling in place, the empty pile tube 16 is directly pulled out of the adapting hole 112, and a pile hole cavity 21 (empty pile 2) is formed above the top surface of the pile body 11; or,

referring to fig. 9, 10 and 24, after piling in place, the empty pile tube 16 is reversely rotated, so that the empty pile tube 16 is separated from the threaded engagement with the adapting hole 112 (fig. 24) or the adapter 114 (fig. 9 and 10), a pile hole cavity 21 (empty pile 2) is formed between the top surface of the pile body 11 and the pile hole opening 35, and the upper end of the tie bar 12 is positioned above the pile hole opening 35; or,

referring to fig. 11 and 12, after piling in place, the hollow pile tube 16 is rotated to disengage the hollow pile tube 16 from the engagement with the adaptor 114, a pile hole cavity 21 (hollow pile 2) is formed between the top surface of the pile body 11 and the pile hole opening 35, and the upper end of the tie bar 12 is located above the pile hole opening 35.

When the empty pile 2 is the backfilled soil body 22, an air compressor is used for conveying plain or impurity filled soil into the pile hole cavity 21 through a conveying pipe 124 by high-pressure air flow, or/and a grouting pump is used for injecting slurry into the pile hole cavity 21 through a grouting pipe 125, and the slurry is backfilled into the pile hole cavity 21, so that the pile hole cavity 21 is filled with the backfilled soil body 22. The dry material or slurry is fed during backfilling, and the material feed pipe 124 and the slurry feed pipe 125 are pulled up until the pile hole 32 is pulled out. Thus, the dry material injected by the conveying pipe 124 and the slurry injected by the grouting pipe 125 can be mixed, so that the anchoring effect of the pile body 11 is better.

After the above steps are completed, the tie bar 12 is extended into the outer connecting member 4, and then the upper end of the tie bar 12 is fixed in the outer connecting member 4 by the upper first fastener 122.

The invention also provides a construction method of the uplift pile of the pile structure 1 shown in fig. 1, which comprises the following steps:

t1: pile holes 32 are drilled into the formation 3 at a designed diameter and depth of the pile body 11. Specifically, referring to FIG. 26A, the pile 11 is designed to have a diameter D and a length L ₁ Depth H of burying of pile 11 ₁ Pile holes 32 are drilled in the stratum 3, and the depth of the pile holes 32 is H.

T2: connecting the lower end of the lacing wire 12 with the reinforcement cage 101, placing the reinforcement cage 101 and the lacing wire 12 together at the bottom of the pile hole 32, and positioning the upper end of the lacing wire 12 above the pile hole orifice 35; specifically, referring to fig. 26B, the lower end of the tie bar 12 is connected to the prefabricated reinforcement cage 101 by the second fastener 126 at the construction site, so that the lower end of the tie bar 12 is fixed to the reinforcement cage 101, and then the reinforcement cage 101 and the tie bar 12 are placed at the bottom of the pile hole 32 together, and the upper end of the tie bar 12 extends from the pile hole 32 and is located above the pile hole orifice 35. Or alternatively

Connecting the lower end of the lacing wire 12 with the reinforcement cage 101, arranging a conveying pipe 124 or/and a grouting pipe 125 and the lacing wire 12 in parallel and installing the lacing wire 12 at the design position of the lacing wire 12, then placing the reinforcement cage 101 and the lacing wire 12 at the bottom of the pile hole 32, and enabling the conveying pipe 124 or/and the grouting pipe 125 to enter the pile hole 32 together, so that the lacing wire 12 and the upper end of the conveying pipe 124 or/and the grouting pipe 125 are positioned above the pile hole orifice 35; specifically, the lower end of the tie bar 12 is connected with the reinforcement cage 101 through the lower second fastener 126 at the construction site, so that the lower end of the tie bar 12 is fixed on the reinforcement cage 101, the conveying pipe 124 or/and the grouting pipe 125 are arranged in parallel with the tie bar 12 and installed at the designed position of the tie bar 12, then the reinforcement cage 101 and the tie bar 12 are placed at the bottom of the pile hole 32, the conveying pipe 124 or/and the grouting pipe 125 enter the pile hole 32 together, and the upper ends of the tie bar 12, the conveying pipe 124 or/and the grouting pipe 125 extend out of the pile hole 32, so that the upper ends of the tie bar 12 and the conveying pipe 124 or/and the grouting pipe 125 are positioned above the pile hole orifice 35.

T3: pouring concrete 102 into the pile hole 32 to form a pile body 11 with the diameter, the length and the embedding depth meeting the design requirements, so that an empty pile 2 is formed between the top surface of the pile body 11 and the pile hole opening 35; specifically, referring to fig. 26C, concrete 102 is poured into the pile hole 32 to form a diameter D and a length L ₁ And a buried depth of H ₁ The reinforced concrete pile body 11, the pile hole cavity 21 is arranged between the top surface of the pile body 11 and the pile hole orifice 35, and the residual mud and the soil generated by drilling can backfill the pile hole cavity 21, so that the external discarding amount is reduced.

Referring to fig. 26D, when the hollow pile 2 is designed to be the backfilled soil body 22, dry materials can be conveyed into the pile hole cavity 21 through the conveying pipe 124 by using an air compressor through a high-pressure air flow or/and slurry can be injected into the pile hole cavity 21 through the grouting pipe 125 by using a grouting pump, so that the pile hole cavity 21 is filled with the backfilled soil body 22, and the conveying pipe 124 or/and the grouting pipe 125 is pulled upwards until the conveying pipe 124 or/and the grouting pipe 125 is pulled out during conveying. After the above steps are completed, the tie bar 12 is extended into the outer connecting member 4, and then the upper end of the tie bar 12 is fixed in the outer connecting member 4 by the upper first fastener 122.

The construction method is simple and feasible, the site construction is convenient, and the construction cost is reduced.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A uplift pile comprising:

a pile hole (32) formed by the concave extension of the ground surface (31) into the stratum (3), and a pile structure (1) arranged in the pile hole (32) along the axial direction of the pile hole (32);

the pile structure (1) comprises a pile body (11) and tie bars (12), wherein the pile body (11) is a structural object formed by reinforced concrete or/and a steel structure, the pile body (11) is embedded and fixed at the lower end of a pile hole (32), the lower end of each tie bar (12) is connected with the pile body (11), and the upper end of each tie bar (12) is positioned above a pile hole orifice (35) of the pile hole (32) and used for connecting an external connecting component (4);

an empty pile (2) without a pile body in the pile hole (32) is arranged between the top surface of the pile body (11) and the pile hole orifice (35), and the empty pile (2) is a pile hole cavity (21), or/and is backfilled soil body (22) in the pile hole cavity (21), or/and is self-falling soil body (23) for retracting or/and slumping of a hole wall soil layer of the pile hole cavity (21).

2. The uplift pile according to claim 1, characterized in that,

the length of the empty pile (2) is greater than half the length of the pile body (11), and/or the length of the empty pile (2) is greater than 5 times the outer diameter of the pile body (11).

3. The uplift pile according to claim 1, characterized in that,

the uplift pile further comprises a protection cylinder for protecting the upper end of the lacing wire (12), wherein the protection cylinder is sleeved on the outer circle of the upper end of the lacing wire (12) along the axial direction and extends upwards into the external connecting component (4); or alternatively

The uplift pile further comprises a protection barrel assembly (123) for protecting the upper end of the lacing wire (12), and the protection barrel assembly (123) comprises: the outer circle of the upper end of the lacing wire (12) is sleeved with the protection barrel along the axial direction and extends upwards into the outer connecting component (4), the sealing material (1232) is connected to the lower opening end of the protection barrel in a sealing way, and the anti-corrosion material (1231) is filled in the protection barrel.

4. The uplift pile according to claim 1, characterized in that,

the uplift pile further comprises a water filtering pipe (24) which is axially inserted into the hollow pile (2), and the water filtering pipe (24) is provided with a water permeable pipe wall.

5. A pile structure for a uplift pile as claimed in any one of claims 1 to 4, comprising:

The pile comprises a pile body (11) and a lacing wire (12), wherein one end of the lacing wire (12) axially stretches into the pile body (11) and then is connected with the pile body (11);

the length of the exposed section of the lacing wire (12) exposed out of the pile body (11) is larger than 60 times of the diameter of the lacing wire (12).

6. The pile structure according to claim 5, wherein,

the pile structure (1) further comprises a sleeve (121) sleeved on the outer circle of the exposed section of the lacing wire (12);

the sleeve (121) is filled with a lubricating material (1211).

7. The pile structure according to claim 5, wherein,

the pile structure (1) further comprises a pile shoe (14), the pile shoe (14) having a cavity for receiving a member surrounding the bottom of the pile body (11).

8. The pile structure according to claim 5, wherein,

the pile structure (1) further comprises a conveying pipe (124) or/and a grouting pipe (125) which are arranged on the exposed section of the lacing wire (12) in parallel, and the conveying pipe (124) or/and the grouting pipe (125) are respectively connected with the exposed section of the lacing wire (12).

9. Pile structure according to any one of claims 5-8, characterised in that,

the pile structure (1) further comprises an empty pile pipe (16) arranged along the axial direction, and the lower end of the empty pile pipe (16) is detachably connected with the top end of the pile body (11) through an adapting hole (112) or an adapter (114) arranged at the top end of the pile body (11);

The lacing wire (12), or the lacing wire (12) and the conveying pipe (124) or/and the grouting pipe (125) are/is arranged in the hollow pile pipe (16) in a penetrating way along the axial direction.

10. A pile structure according to claim 9, wherein,

the hollow pile pipe (16) is in a hollow tubular shape; or alternatively

The hollow pile pipe (16) comprises a hollow tubular hollow pile pipe body, wing plates (161) vertically sleeved on the outer circle of the lower end of the hollow pile pipe body, and rib plates (162) which are sequentially arranged at intervals along the circumferential direction and are connected between the outer circle surface of the hollow pile pipe body and the wing plates (161);

the lacing wire (12), or the lacing wire (12) and the conveying pipe (124) or/and the grouting pipe (125) are/is arranged in the hollow pile pipe body in a penetrating way along the axial direction.

11. A pile structure according to claim 9, wherein,

the lower end of the hollow pile tube (16) is inserted into the adapting hole (112) and is abutted to the bottom of the adapting hole (112); or alternatively

The lower end of the hollow pile tube (16) is in threaded connection with the adapting hole (112) or the adapter (114); or alternatively

The lower end of the hollow pile tube (16) is detachably clamped with the adapting hole (112) or the adapter (114).

12. A pile body for a pile structure according to any one of claims 5-11, characterised in that,

A central channel (111) for the tie bars (12) to axially penetrate is arranged on the pile body (11);

the top end of the pile body (11) is provided with a concave adapting hole (112) or is connected with an adapter (114) so as to be detachably connected with the empty pile pipe (16).

13. Pile body according to claim 12, characterised in that,

the pile body (11) is a reinforced concrete pile; or alternatively

The pile body (11) is a steel pipe, and a pile bottom plate (1191) is arranged at the bottom of the steel pipe; or alternatively

Pile body (11) are including stake roof (1192), stake bottom plate (1191) and three piece at least stand (1194), stake roof (1192) weld in each stand (1194) top, stake bottom plate (1191) weld in each stand (1194) bottom.

14. Pile body according to claim 12, characterised in that,

the bottom of the adapting hole (112) is provided with a steel plate (113) for abutting against the bottom end of the hollow pile tube (16); or alternatively

The wall of the adapting hole (112) is provided with an internal thread for being in threaded connection with an external thread of the hollow pile tube (16); or alternatively

The wall of the adapting hole (112) is provided with a clamping ring (1143) which is used for being detachably clamped with a first protruding block (163) arranged on the outer wall of the lower end of the hollow pile tube (16).

15. Pile body according to claim 12, characterised in that,

The adapter (114) consists of a supporting plate (1141) and an adapter tube (1142), the adapter tube (1142) is perpendicular to the supporting plate (1141) and is integrated, the adapter tube (1142) is positioned in the central channel (111), and an inner wall of the adapter tube (1142) is provided with an inner thread for being in threaded connection with an outer thread arranged at the lower end of the hollow pile tube (16); or alternatively

The lower end of the inner wall of the adapter tube (1142) is provided with a clamping ring (1143) which is used for being detachably clamped with a first protruding block (163) arranged on the outer wall of the lower end of the hollow pile tube (16).

16. Pile body according to claim 12, characterised in that,

the adapter (114) consists of a supporting plate (1141) and an adapter tube (1142), the adapter tube (1142) is perpendicular to the supporting plate (1141) and is integrated, the adapter tube (1142) is positioned outside the central channel (111), and an external thread is arranged on the outer wall of the adapter tube (1142) and is used for being in threaded connection with an internal thread arranged at the lower end of the hollow pile tube (16); or alternatively

The outer wall of the lower end of the adapter tube (1142) is provided with a second bump (1144) which is used for being clamped with a clamping lug (164) arranged on the inner wall of the lower end of the hollow pile tube (16).

17. A base for connection of the tie bars in the uplift pile of any one of claims 1-4 and the tie bars in the pile structure of any one of claims 5-11 with the pile body in the uplift pile of any one of claims 1-4, the pile body in the pile structure of any one of claims 5-11 and the pile body of any one of claims 12-16,

The base (13) comprises an upper plate (131) and a lower plate (133) which are arranged at intervals relatively, and a connecting pipe (132) connected between the upper plate (131) and the lower plate (133);

the upper plate (131) is fixed with the bottom end of the pile body (11), and the connecting pipe (132) is used for allowing the lacing wires (12) to penetrate.

18. A fastening assembly for connection of the tie-down in the uplift pile of any one of claims 1-4 and the tie-down in the pile structure of any one of claims 5-11 with the pile body in the uplift pile of any one of claims 1-4, the pile body in the pile structure of any one of claims 5-11 and the pile body of any one of claims 12-16, comprising: a connecting plate (152) and a fixing member (151);

the connecting plate (152) is used for being arranged at the bottom end of the pile body (11) or the bottom end of the base (13) according to claim 17, and the connecting plate (152) is provided with a mounting hole (1521) for the lacing wire (12) to penetrate through;

-said connection plate (152) or said fixing element (151) being connected to said pile body (11), or-said connection plate (152) or said fixing element (151) being connected to said lower plate (133) of the base (13) according to claim 17;

the fixing piece (151) is used for fixing the lower end of the lacing wire (12) on the connecting plate (152) after the lacing wire (12) penetrates into the mounting hole (1521).

19. The securing assembly as claimed in claim 18, characterized in that,

the mounting hole (1521) is a conical hole with the inner diameter gradually decreasing from bottom to top;

the fixing piece (151) comprises a pressing plate (1512) positioned below the connecting plate (152), and a cone (1511) which is arranged corresponding to the conical hole and can be folded inwards under the force;

the cone (1511) is used for extruding into a gap between the lacing wire (12) and the conical hole from bottom to top, and is used for inwards gathering and clamping the lacing wire (12) under the action of the conical hole in the process of extruding upwards;

the pressure plate (1512) is connected to the bottom end of the pile body (11) or the base (13) according to claim 17, for preventing the cone (1511) from falling out of the cone-shaped hole.

20. The securing assembly as claimed in claim 18, characterized in that,

the fixing piece (151) comprises a pressing plate (1512) positioned below the connecting plate (152) and a clamping head (1513) fixed on the outer circle of the lower end of the lacing wire (12);

the pressing plate (1512) is connected with the bottom end of the pile body (11) or the base (13) according to claim 17;

the clamping head (1513) is located between the connecting plate (152) and the pressing plate (1512) and is used for propping against the connecting plate (152) under the acting force of the lacing wires (12).

21. The securing assembly as claimed in claim 18, characterized in that,

the fixing piece (151) is a fixing nut (1514), the fixing nut (1514) is fixed with the connecting plate (152), and the lower end of the lacing wire (12) is in threaded connection with the fixing nut (1514).

22. A construction method of making a pile structure according to any one of claims 5 to 11 and driving into the ground to form a uplift pile according to any one of claims 1 to 4, comprising the steps of:

s1: manufacturing the pile body (11) with a central channel (111) according to the shape and the size of the designed pile body (11);

s2: penetrating the lower section of the lacing wire (12) into a central channel (111) of the pile body (11) and connecting the lower section of the lacing wire (12) with the pile body (11), and exposing the upper section of the lacing wire (12) outside the central channel (111);

when the conveying pipe (124) or/and the grouting pipe (125) are designed, the conveying pipe (124) or/and the grouting pipe (125) and the lacing wire (12) are arranged in parallel and are installed on the lacing wire (12);

s3: penetrating the lacing wire (12) into the hollow pile pipe (16), when a conveying pipe (124) or/and a grouting pipe (125) are designed, penetrating the conveying pipe (124) or/and the grouting pipe (125) and the lacing wire (12) into the hollow pile pipe (16), and detachably connecting the lower end of the hollow pile pipe (16) with the top end of the pile body (11) through an adapting hole (112) or an adapter (114) arranged at the top end of the pile body (11);

S4: applying force to the upper end of the empty pile pipe (16) by adopting a pile driver, and driving the pile structure (1) into a designed depth position in the stratum (3);

s5: and (3) detaching the empty pile pipe (16) from the pile body (11), and pulling out the empty pile pipe from the stratum so as to form an empty pile (2) between the top surface of the pile body (11) and the pile hole opening (35).

23. A method of constructing a uplift pile as claimed in any one of claims 1 to 4, comprising the steps of:

t1: drilling holes (32) in the stratum (3) according to the designed diameter and depth of the pile body (11);

t2: connecting the lower end of a lacing wire (12) with a reinforcement cage (101), placing the reinforcement cage (101) and the lacing wire (12) at the bottom of a pile hole (32), wherein the upper end of the lacing wire (12) is positioned above a pile hole orifice (35); or alternatively

Connecting the lower end of a lacing wire (12) with a reinforcement cage (101), arranging a conveying pipe (124) or/and a grouting pipe (125) and the lacing wire (12) in parallel and installing the lacing wire (12) at a design position, then placing the reinforcement cage (101) together with the lacing wire (12) at the bottom of a pile hole (32), and enabling the conveying pipe (124) or/and the grouting pipe (125) to enter the pile hole (32) together so that the lacing wire (12) and the conveying pipe (124) or/and the upper end of the grouting pipe (125) are positioned above a pile hole orifice (35);

T3: and pouring concrete (102) into the pile hole (32) to form a pile body (11) with the diameter, the length and the embedding depth meeting the design requirements, so that an empty pile (2) is formed between the top surface of the pile body (11) and the pile hole opening (35).