CN104863123B - Drilling bearing pile and forming method thereof - Google Patents
Drilling bearing pile and forming method thereof Download PDFInfo
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- CN104863123B CN104863123B CN201510206707.2A CN201510206707A CN104863123B CN 104863123 B CN104863123 B CN 104863123B CN 201510206707 A CN201510206707 A CN 201510206707A CN 104863123 B CN104863123 B CN 104863123B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/48—Piles varying in construction along their length, i.e. along the body between head and shoe, e.g. made of different materials along their length
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention belongs to the technical field of building, relates to a drilling bearing pile and a forming method thereof, and solves the problem of poor pulling resistance and poor pile shaft strength in the prior art. The drilling bearing pile includes a pile shaft, wherein the pile shaft is provided with at least one expanded part protruding out of the pile shaft in the radial direction of the pile shaft. The forming method includes digging a hole, grouting, placing a reinforcing cage and the like. The foundation of the pile provided by the invention is good in stability, and high pulling resistance and anti-bearing capacity are realized.
Description
Technical field
The invention belongs to technical field of buildings, be related to a kind of cement drilled pile, more particularly to a kind of drilling bearing pile and its
Manufacturing process.
Background technology
Drilled pile adopts underwater concrete pile, is to adopt mechanical hole building.Existing drilled pile adopts drill hole of drilling machine, is boring
Grout injection during hole, and up and down reciprocatingly afterwards boring cement mortar is filled for several times, form muddy water mixed column, curing molding
Drilled pile is afterwards.But existing drilled pile is all single-column stake, when higher withdrawal resistance and compressive resistance is needed, need drilling
Do greatly so as to make the drilling post of larger aperture in aperture.
Chinese patent literature disclose a kind of bidirectional stirring pile into pile operation method [notification number：CN1632233A], bag
Include following steps：A, leveling place；B, bidirectional stirring pile machine positioning：Crane suspends blender in midair to finger fixed pile simultaneously centering；c、
Stirring is sunk, and starts bidirectional stirring pile machine, makes bidirectional stirring pile driver drilling rod along leading truck to incision soil, and stock pump is sent in unlatching, to soil
Body water-spray type slurry, distinguishes the blade of forward and reverse rotation while Stirring soil cement on bidirectional stirring pile driver drilling rod；D, it is two-way to stir
Mix a driver drilling rod persistently to sink and stirring concrete earth, until projected depth；E, while stirring is lifted, bidirectional stirring pile driver drilling rod
The blade of upper forward and reverse rotation continues stirring concrete earth；F, is lifted, is stirred to earth's surface or designed elevation above 50cm, complete two-way
The construction of ready-mixed concrete drilled pile.Its weak point：One be the stake of molding still for single-column cement earth pile, in soft soil foundation
Single-column cement earth pile is as pile foundation area is little, stake surrounding soil property is dilute soft, vertical is not enough to support single-column cement earth pile to protect by support force
Hold vertical, thus easily cause the single-column cement earth pile run-off the straight of institute's molding and scrap；Two is due in single-column cement earth pile
Cement mortar is stirring in the same direction with the stirring of soil, it is impossible to the mixing between cement mortar and soil is unable to reach uniformly, thus certainly will make
Single-column strength of the cement-soil piles into institute's molding is low.
The content of the invention
The purpose of the present invention is for the problems referred to above, there is provided a kind of pile strength is high, the drilling bearing pile that withdrawal resistance is high.
It is a further object of the present invention to provide a kind of manufacturing process of the drilling bearing pile of easy construction.
To reach above-mentioned purpose, following technical proposal is present invention employs：A kind of drilling bearing pile, including pile body, it is described
Pile body on at least one along the expansion section of the radially projecting pile body of pile body.
In above-mentioned drilling bearing pile, described expansion section has several, and the distance between each two expansion section phase
Deng or it is unequal.
In above-mentioned drilling bearing pile, the edge of the cross section of described pile body has the angle in circular arc.
In above-mentioned drilling bearing pile, described expansion section by several project each angle the connection of pile body protuberances and
Into, and the quantity of pile body protuberance is identical with the quantity at angle.
In above-mentioned drilling bearing pile, described pile body includes at least one by three distributions triangular in shape and mutually pastes
The elementary cell of the pile body composition of conjunction, and when pile body includes plural elementary cell, per two adjacent elementary cells
Share two identical pile bodies.
In above-mentioned drilling bearing pile, constitute elementary cell three pile bodies in any one pile body respectively with other
Two pile bodies have lap.
In above-mentioned drilling bearing pile, in described pile body, steel reinforcement cage is placed with.
In above-mentioned drilling bearing pile, the axial line of the pile body in pile body is not at grade.
In above-mentioned drilling bearing pile, described pile body is in quincunx, T-shaped, L-shaped or cross.
In above-mentioned drilling bearing pile, the shape of cross section of described steel reinforcement cage it is identical with the shape of cross section of pile body and
Cross section of the cross sectional dimensions of steel reinforcement cage less than pile body.
A kind of manufacturing process of drilling bearing pile, comprises the following steps：
A, borehole, borehole adopt multiple-drill press, many auger spindles to be distributed so as to form polygon from ground toward underground drilling simultaneously
Multiple cylindrical holes, the drill bit installed on described auger spindle be the adjustable reamer of the radius of gyration, wherein cylindrical per 3
Hole it is bonded to each other or be built up an elementary cell, each two neighboring unit cells share two identical holes, and cylinder
Shape hole formation stake holes bonded to each other；
B, grouting, pour into the cement mortar or mortar for molding in stake holes, and make the top of cement mortar or mortar and stake holes
Portion has space；
C, it is put into steel reinforcement cage in stake holes, continues to pour into cement mortar or mortar, after coagulation forming, be drilled pile.
In the manufacturing process of above-mentioned drilling bearing pile,
In step, casing is squeezed in soil layer in advance, casing submergence depth is through coating；In stepb, pour into
1/3-2/3 of the height of cement mortar or mortar for stake holes depth, in filling process, casing is with cement mortar or the height of mortar
Rise and be progressively lifted up；In step C, the shape of steel reinforcement cage is identical with the shape of stake holes but is smaller in size than the chi of stake holes
It is very little.
Compared with prior art, it is an advantage of the current invention that：As the loaded area of pile foundation is big, carry the strong point in flat
EDS maps, thus the good stability of pile foundation, while ensure that cement earth pile is not inclined in soft soil foundation, stood vertically；Using
The pile body of many non-linear configurations, serving increases the effect of pile body and the contact area of ground, improves withdrawal resistance and anti-
Bearing capacity；Expansion section is suitable in the preferable soil layer of soil property, further improves withdrawal resistance and anti-bearing capacity.The shaping of the present invention
Method easy construction, can improve work efficiency.
Description of the drawings
Fig. 1 is the structural representation that the present invention is provided；
Fig. 2 is another kind of structural representation that the present invention is provided；
Fig. 3 is the cross-sectional view of the pile body that the present invention is provided；
Fig. 4 is the cross-sectional view of the pile body that the present invention is provided；
Fig. 5 is another kind of cross-sectional view of the pile body that the present invention is provided；
Fig. 6 is another kind of cross-sectional view of the pile body that the present invention is provided；
Fig. 7 is another kind of cross-sectional view of the pile body that the present invention is provided；
Fig. 8 is the structural representation of elementary cell；
Fig. 9 is another kind of structural representation of elementary cell；
Figure 10 is the schematic diagram of elementary cell；
Figure 11 is another kind of schematic diagram of elementary cell.
In figure：Pile body 10, angle 11, expansion section 20, pile body protuberance 21, elementary cell 30, pile body 31, steel reinforcement cage 40.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
As shown in figure 1, a kind of drilling bearing pile, including cylindrical pile body 10, have at least one on described pile body 10
The expansion section 20 of the individual radially projecting pile body 10 along pile body 10, it is clear that girth of the girth of expansion section 20 more than pile body 10, as
Which kind of shape expansion section 20 is, the present embodiment to limit, can not be annular, truncated cone, bucking ladder etc..Expansion section 20
Effect be, it is possible to increase the contact area with soil layer, improve withdrawal resistance and bearing capacity.
Preferred version, as shown in Fig. 2 expansion section 20 has several, and the distance between each two expansion section 20 it is equal or
It is unequal.
Pile body 10 can be cylinder, or other shapes, in the present embodiment, preferably, pile body 10
Cross section edge have in circular arc angle 11.
It is highly preferred that expansion section 20 is formed by connecting by several pile body protuberances 21 for projecting each angle 11, and pile body is prominent
The quantity for going out portion 21 is identical with the quantity at angle 11.
Specifically, as shown in Fig. 3, Fig. 8 and Fig. 9, pile body 10 includes at least one by three distributions triangular in shape and phase
The elementary cell 30 that mutually pile body 31 of laminating is constituted, and when pile body 10 includes plural elementary cell 30, per adjacent
Two elementary cells 30 share two identical pile bodies 31, and the cross section for constituting the pile body 31 of elementary cell 30 can also may be used with identical
To differ.Any one pile body 31 in three pile bodies 31 of composition elementary cell 30 has weight respectively with other two piles bodies 31
Folded part, that is to say, that three pile bodies 31 in elementary cell 30 are overlapped two-by-two, or are interpreted as mutually pasting two-by-two
Close, the dash area in Fig. 8 and Fig. 9 is the part that pile body 31 is overlapped or fits.Dotted line in Figure 10 and Figure 11 is represented
Triangle be the pile body 31 in an elementary cell 30 center line, it is seen that the adjacent elementary cell of each two 30 is real
Border is made up of 4 pile bodies 31.
As shown in Fig. 3-Fig. 7, it is to be understood that the axial line of the pile body 31 in pile body 10 not at grade,
That is the center of pile body 31 is in plane distribution, so as to improve the structural strength of pile body 10.In the present embodiment, pile body 10
Shape is not with restriction, it is preferable that pile body 10 is in quincunx, T-shaped, L-shaped or cross.
When pile body 10 is T-shaped, L-shaped or during cross, at least two campshed bodies 31 of pile body 10 are constituted, can be with per campshed body 31
Arranged in parallel at grade, and constitutes pile body 10 into double dislocation or multiple rows of Heterogeneous Permutation, the axial line per campshed body 31
Some campshed bodies 31 axial line not at grade.
In above-mentioned scheme, the quantity of pile body protuberance 21 is actually not more than the quantity of pile body 31, and reason is, when
When pile body 31 is located at the middle part of pile body 10, the pile body 31 is not or not the edge of pile body 10, thus the pile body 31 is not likely to form
The pile body protuberance 21 of protrusion pile body.
In order to improve the intensity of pile body 10, steel reinforcement cage 40 in pile body 10, is placed with, steel reinforcement cage 40 is by some and pile body 10
The parallel longitudinal reinforcement of axial line and the steel hoop composition being fixedly connected with longitudinal reinforcement.The shape of steel reinforcement cage 40 can be
Cylinder or square column type or other shapes, preferably, the shape of cross section phase of the shape of cross section of steel reinforcement cage 40 and pile body 10
Cross section of the cross sectional dimensions of same and steel reinforcement cage 40 less than pile body 10, so that steel reinforcement cage 40 is located inside pile body 10 and has
The shape matched with pile body 10, for the intensity for improving pile body 10 serves booster action.
Present invention also offers a kind of manufacturing process of polygonal drilled pile, comprises the following steps：
A, borehole, squeeze into casing in advance in soil layer, and casing submergence depth passes through coating, borehole to adopt multiple-drill press,
Many auger spindles of rig are arranged by polygon, many auger spindles are simultaneously from ground toward underground drilling so as to forming many of polygon distribution
Individual cylindrical hole, the drill bit installed on described auger spindle are the adjustable reaming bit of the radius of gyration；Dig out in the earth formation 3 with
The upper cylindrical hole in polygon distribution, and cylindrical hole formation stake holes bonded to each other；
B, grouting, pour into the cement mortar or mortar for molding in stake holes, and make the top of cement mortar or mortar and stake holes
Portion has space；1/3-2/3 of the height of cement mortar or mortar for stake holes depth is poured into, in filling process, casing is with water
The height of mud or mortar rises and is progressively lifted up；
C, it is put into steel reinforcement cage in stake holes, continues to pour into cement mortar or mortar, after coagulation forming, be drilled pile, steel reinforcement cage
Shape it is identical with the shape of stake holes but be smaller in size than the size of stake holes.
Specifically, in borehole step, the casing being consistent with drilled pile profile is first squeezed into severely-weathered layer by survey crew
Used as guide pile, the size of the casing should be greater than or equal to the size of drilled pile, the key of the success or failure that drill is to prevent hole wall collapse,
When drilling deeper, under hydrostatic pressure can cave in into hole, quicksand phenomenon even occurs in the hole wall soil below level of ground water,
Casing plays a part of to prevent hole wall collapse, while also isolation surface water, protection aperture ground, spud pile hole site and drill bit
The effect such as guiding.The material for making casing has wood, steel, three kinds of armored concrete.Casing requirement is sturdy and durable, water-tight, in which
Footpath should be bigger than bore diameter.
Drilling enters construction technology using normal circulation slewing drilling machine, suitably throws soil less in clay layer, voluntarily makes by auger spindle drilling
Slurry, then increases concentration of hydraulic mixture Gu Bi in sandy soils, and three auger spindle rate of penetrations are adapted with mud output all the time, meet loosely
During layer, appropriate increase specific gravity of mud and denseness mitigate as far as possible and rush impact of the liquid to hole wall, at the same reduce rotating speed and the pressure of the drill with
Meet quality control on construction requirement.
Steel reinforcement cage needs prefabricated in advance, during borehole, such as runs into the preferable geological stratification of soil property, and reaming bit should expand
So as to form the hollow part of protrusion pile body, when enabling grouting, cement mortar forms expansion section 30 in being circulated into hollow part to the radius of gyration,
Improve the withdrawal resistance and bearing capacity of pile body 10.Easy construction simultaneously, substantially increases the speed of stake processed.
Specific embodiment described herein is only explanation for example spiritual to the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement or replaced using similar mode to described specific embodiment
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Although more having used pile body 10, angle 11, expansion section 20, pile body protuberance 21, elementary cell 30, pile body herein
31st, the term such as steel reinforcement cage 40, but it is not precluded from the probability using other terms.Using these terms just for the sake of more convenient
Describe and explain the present invention essence；Being construed as any additional restriction is disagreed with spirit of the present invention
's.
Claims (6)
1. a kind of drilling bearing pile, including pile body (10), it is characterised in that with least one along stake on described pile body (10)
The expansion section (20) of the radially projecting pile body (10) of body (10),
Described pile body (10) includes at least one base being made up of three distributions triangular in shape and pile body (31) bonded to each other
This unit (30), and when pile body (10) is comprising plural elementary cell (30), per two adjacent elementary cells (30)
Two identical pile bodies (31) are shared,
Composition elementary cell (30) three pile bodies (31) in any one pile body (31) respectively with other two piles body (31)
There is lap.
2. drilling bearing pile according to claim 1, it is characterised in that described expansion section (20) has several, and often
The distance between two expansion sections (20) are equal or unequal.
3. drilling bearing pile according to claim 2, it is characterised in that the edge tool of the cross section of described pile body (10)
There is the angle in circular arc (11).
4. drilling bearing pile according to claim 3, it is characterised in that described expansion section (20) is every by several protrusions
The pile body protuberance (21) of individual angle (11) is formed by connecting, and the quantity of pile body protuberance (21) is identical with the quantity of angle (11).
5. drilling bearing pile according to claim 1, it is characterised in that is placed with steel reinforcement cage in described pile body (10)
(40), the shape of cross section of described steel reinforcement cage (40) is identical with the shape of cross section of pile body (10) and steel reinforcement cage (40) it is transversal
Face is smaller in size than the cross section of pile body (10).
6. drilling bearing pile according to claim 1, it is characterised in that the axial line of the pile body (31) in pile body (10) is not
At grade, described pile body (10) is in quincunx, T-shaped, L-shaped or cross.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206707.2A CN104863123B (en) | 2014-04-29 | 2015-04-27 | Drilling bearing pile and forming method thereof |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174655.0A CN104032730A (en) | 2014-04-29 | 2014-04-29 | Triangular plum-blossom-shaped shaped drilling pile and forming method thereof |
| CN2014101746550 | 2014-04-29 | ||
| CN2014101746546 | 2014-04-29 | ||
| CN201410174654.6A CN104088274A (en) | 2014-04-29 | 2014-04-29 | Quincunx drilling pile and forming method |
| CN201510206707.2A CN104863123B (en) | 2014-04-29 | 2015-04-27 | Drilling bearing pile and forming method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104863123A CN104863123A (en) | 2015-08-26 |
| CN104863123B true CN104863123B (en) | 2017-05-03 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510206707.2A Active CN104863123B (en) | 2014-04-29 | 2015-04-27 | Drilling bearing pile and forming method thereof |
| CN201520262483.2U Expired - Lifetime CN204780867U (en) | 2014-04-29 | 2015-04-27 | Drilling bearing pile |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520262483.2U Expired - Lifetime CN204780867U (en) | 2014-04-29 | 2015-04-27 | Drilling bearing pile |
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| Country | Link |
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| CN (2) | CN104863123B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255482A (en) * | 2020-01-16 | 2020-06-09 | 广东省建筑构件工程有限公司 | Underpinning structure on subway tunnel and construction method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1111230C (en) * | 1994-12-26 | 2003-06-11 | 石寅生 | Making method for non-annular borehole cast-in-place pile |
| CN1208102A (en) * | 1998-07-31 | 1999-02-17 | 叶长生 | Deposited pile and its construction |
| KR20130038313A (en) * | 2013-02-25 | 2013-04-17 | 디엠이엔씨(주) | Phc pile |
| CN103362123A (en) * | 2013-07-05 | 2013-10-23 | 山东科技大学 | Reverse Y-shaped filling pile and construction method thereof |
-
2015
- 2015-04-27 CN CN201510206707.2A patent/CN104863123B/en active Active
- 2015-04-27 CN CN201520262483.2U patent/CN204780867U/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN204780867U (en) | 2015-11-18 |
| CN104863123A (en) | 2015-08-26 |
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