CN210507418U - A Construction Structure Near Existing Line Bridge Pile Foundation - Google Patents
A Construction Structure Near Existing Line Bridge Pile Foundation Download PDFInfo
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- CN210507418U CN210507418U CN201921034712.XU CN201921034712U CN210507418U CN 210507418 U CN210507418 U CN 210507418U CN 201921034712 U CN201921034712 U CN 201921034712U CN 210507418 U CN210507418 U CN 210507418U
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Abstract
本实用新型提供了一种临近既有线桥梁桩基的施工结构，包括桩孔，桩孔的顶部设有锁口，所述锁口的一侧设有空压机，另一侧设有出渣机具，所述出渣机具的前侧向锁口延伸设有滑轮组，出渣机具的内部设有钢丝绳，所述钢丝绳由出渣机具的顶部穿出并绕过滑轮组后垂直向锁口的下方延伸，所述钢丝绳的底端连接有吊斗；所述桩孔的内部设有多节钢护筒，且最上端的钢护筒顶端焊接有护筒定位钢板，所述钢护筒通过护筒定位钢板固定在锁口上。本实用新型采用人工挖孔和水磨钻成孔相结合的施工方法，并在施工时采用钢护筒跟进，能够有效保护既有线路基安全，施工全过程桩孔内始终处于无水的干燥环境，避免了既有线路基遭受水浸泡，实用性强。
The utility model provides a construction structure adjacent to an existing bridge pile foundation, which comprises a pile hole, a lock opening is arranged on the top of the pile hole, an air compressor is arranged on one side of the lock opening, and a slag discharger is arranged on the other side. Machine tool, the front side lock of the slag machine is extended with a pulley block, and the inside of the slag machine is provided with a wire rope, the wire rope is pierced from the top of the slag machine and goes around the pulley block and extends vertically below the lock. , the bottom end of the steel wire rope is connected with a hanging bucket; the inside of the pile hole is provided with a multi-section steel protective tube, and the top of the uppermost steel protective tube is welded with a protective tube positioning steel plate, and the steel protective tube passes through the protective tube positioning steel plate Fastened to the lock. The utility model adopts the construction method of combining artificial hole digging and water mill drilling, and adopts steel casing to follow up during construction, which can effectively protect the safety of the existing line foundation, and the pile hole is always in a dry environment without water during the whole construction process , to avoid the existing circuit base from being soaked in water, and has strong practicability.
Description
Technical Field
The utility model relates to a bridge pile foundation construction method field especially relates to a close on existing line bridge pile foundation's construction structure.
Background
With the rapid development of national economy of China, the density of expressway networks and railway networks is continuously improved, traffic channel resources are increasingly in short supply, and cross-crossing among various traffic modes is gradually increased. The three-dimensional crossing among a plurality of lines mainly adopts an upper-span bridge and a lower-pass tunnel, and when the existing line is spanned on the bridge structure, the construction method of the bridge pile foundation is particularly important. And a proper construction method is selected, so that the problem of conflict between the construction safety region of the newly-built bridge and the equipment and safety operation of the existing traffic roads (such as expressways and railways) is solved.
The existing construction method of the manual hole digging pile is mainly blasting construction, and the method has the following defects: due to the fact that a plurality of unstable factors exist during blasting, the hole wall is easy to be damaged, irregular hole forming is easy to be caused, and the number of the concrete over-square parts is large; moreover, the blasting construction has larger noise, larger influence on the surrounding environment and relatively poorer safety. In the bored pile construction technology, for example, large mechanical equipment (rotary drilling rigs, percussion drills and the like) is used, although the safety degree is high and the construction speed is high in the construction process, the equipment is too large, the transfer process is difficult, and particularly, the operation is inconvenient in a narrow and complex construction site; the construction noise is large, the pollutants are more, and a large amount of dust is generated. In the daily practice process, the method of adopting the water mill drill to match with the manual hole digging and slag discharging not only has convenient construction operation, small occupied area and small influence on the external environment, but also can solve the manual hole digging pile construction operation under the complex geological condition and on the limited operation surface with shorter construction period, lower cost and better effect.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned construction method existence, the utility model aims to provide a close on existing line bridge pile foundation's construction structure need not use mud, does not cause the influence to existing line operation.
Therefore, the utility model adopts the following technical scheme:
a construction structure close to an existing line bridge pile foundation comprises a pile hole, wherein lock openings are formed in two sides of the top of the pile hole, an air compressor is arranged on one side of each lock opening, a slag discharging machine tool is arranged on the other side of each lock opening, a pulley block extends towards the lock openings in front of the slag discharging machine tool, a steel wire rope is arranged inside the slag discharging machine tool, the steel wire rope penetrates out of the top of the slag discharging machine tool and extends downwards of the lock openings vertically after passing through the pulley block, and a hanging hopper is fixedly connected to the bottom end of the steel wire rope;
the inside in stake hole is equipped with a multisection steel and protects a section of thick bamboo, and the welding of the steel of the top protects a section of thick bamboo top has and protects a section of thick bamboo location steel sheet, the steel protects a section of thick bamboo and fixes on the fore shaft through protecting a section of thick bamboo location steel sheet.
Furthermore, the slag discharging machine comprises a support and a winch arranged in the support, wherein the winch is connected with the steel wire rope and used for winding and unwinding the steel wire rope.
Further, a balancing weight is further arranged in the support.
Furthermore, the slag discharging machine tool is also connected with a water pumping device which extends into the pile hole.
Furthermore, the slag discharging machine tool is also connected with lighting equipment extending into the pile hole.
Furthermore, a steel plate cushion block is arranged at the top of the locking notch
Furthermore, a concrete retaining wall is arranged on the inner wall of the bottom of the pile hole.
The utility model has the advantages that:
the utility model adopts the construction method of steel casing follow-up, which can effectively protect the safety of the existing line roadbed, and the pile holes are always in the anhydrous dry environment in the whole construction process, thereby avoiding the existing line roadbed from being soaked by water, and having strong practicability; in addition, the construction process can form a pile in a hard rock stratum under the condition of no blasting, and the damage to the hole wall of the dug pile caused by blasting can be effectively avoided, so that the risk of hole collapse is avoided; the method is environment-friendly, does not generate excessive pollutants, has low noise and small vibration and disturbance to surrounding buildings, and reduces the influence of construction activities on the environment; and has the characteristics of good adaptability to geological conditions, strong stability and high safety.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is an overall floor plan of the present invention;
fig. 2 is a schematic drawing of steel casing lengthening construction.
The notation in the figure is:
1. a slag tapping machine tool; 2. a balancing weight; 3. an air compressor; 4. locking the opening; 5. a steel casing; 6. concrete dado; 7. a water pumping device; 8. a lighting device; 9. positioning a steel plate by a pile casing; 10. a hoisting bucket; 11. a wire rope; 12. a winch; 13. and (4) a pulley block.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, which, however, may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the invention to those skilled in the art. The terminology used in the exemplary embodiments presented in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Implementation mode one
As shown in fig. 1, a construction structure close to an existing line bridge pile foundation comprises a pile hole 14, wherein lock openings 4 are arranged on two sides of the top of the pile hole 14, an air compressor 3 is arranged on one side of each lock opening 4, a slag discharging machine 1 is arranged on the other side of each lock opening 4, a pulley block 13 is arranged in front of each slag discharging machine 1 and extends towards the lock openings, a steel wire rope 11 is arranged inside each slag discharging machine 1, the steel wire rope 11 penetrates out of the top of each slag discharging machine 1 and extends vertically below the lock openings 4 after bypassing the pulley block 13, and a bucket 10 is fixedly connected to the bottom end of each steel wire rope 11;
as shown in fig. 2, a plurality of sections of steel casing 5 are arranged inside the pile hole 14, a casing positioning steel plate 9 is welded at the top end of the uppermost steel casing 5, the steel casing 5 is fixed on the fore shaft 4 through the casing positioning steel plate 9, and a steel plate cushion block is arranged at the top of the fore shaft 4.
And a concrete protecting wall 6 is arranged on the inner wall of the bottom of the pile hole 14.
Construction structure equipment simple, convenient operation, adaptability to place
The method has the advantages of good performance, small occupied area and application in complex limited construction areas; during construction, the pile can be formed in a hard rock stratum under the condition of no blasting, and the damage to the hole wall of the dug pile caused by blasting can be effectively avoided, so that the risk of hole collapse is avoided; but also is environment-friendly, can not generate excessive pollutants, has small noise and small vibration and disturbance to surrounding buildings, and reduces the shadow of construction activities to the environment
Sounding; the method has the characteristics of good adaptability to geological conditions, strong stability and high safety, and is particularly suitable for the construction of the pile foundation of the extra-hard rock stratum which is close to the residential house and the existing line bridge; each device part can give full play to the utility, each stage links up smoothly, but the continuity operation improves site operation efficiency.
Second embodiment
Further, the slag discharging machine 1 comprises a support and a winch 12 arranged in the support, wherein the winch 12 is connected with the steel wire rope 11 and used for winding and unwinding the steel wire rope 11, and the winch 12 can rotate to avoid interference with follow-up construction of the steel casing; still be provided with balancing weight 2 in the support, just the preferred triangle-shaped structure of support.
Further, the slag tapping machine 1 is also connected with an illuminating device 8 extending into the pile hole 14, the illuminating device 8 comprises an illuminating lamp and an illuminating cable, the illuminating lamp adopts a safety miner lamp or a safety lamp below 36V, and the illuminating cable is a waterproof insulating cable.
Furthermore, a water pumping device 7 extending into the pile hole 14 is connected to the slag discharging machine 1. The pumping equipment 7 comprises a water pump positioned at the bottom of the pile hole 14 and is connected to the water pump, a water pipe extending out of the pile hole 14 is provided with water seepage, the pumping equipment can be used for draining water in time, and therefore the water-free dry environment in the pile hole in the whole construction process is ensured, the existing line roadbed is prevented from being soaked by water, and the practicability is high.
Third embodiment
A bridge pile foundation construction method adjacent to an existing line roadbed comprises the following steps:
s1, according to the existing line condition around the construction site, measuring and positioning the pile hole site, and constructing concrete locking openings 4 on the two sides of the pile hole;
s2, installing a slag discharging machine 1, flattening and hardening a field where the slag discharging machine 1 is installed, and arranging a balancing weight 2 in the slag discharging machine 1;
s3, after the pile line of the pile hole 14 is positioned, excavating a covering soil body layer by layer from top to bottom, excavating the earthwork of the middle part, expanding the periphery, and controlling the size of the excavated section according to the outer diameter of the steel casing 5;
s4, setting a section of steel casing 5 to follow up each time the pile hole 14 is excavated;
s5, after the pile hole 14 is excavated to the medium weathered rock stratum, continuing excavating the hole by using a water mill drill;
and S6, after the hole drilling construction of the water mill is finished, correcting the pile hole 14 and starting the construction of the next cycle.
In summary, the utility model adopts the construction process combining manual hole digging and water mill drilling, thereby effectively avoiding the risk of hole collapse; meanwhile, during construction, mud is not needed, the existing line operation is not affected, excessive pollutants are not generated, the noise is low, the vibration and disturbance to surrounding buildings are small, and the influence of construction activities on the environment is reduced; and has the characteristics of good adaptability to geological conditions, strong stability and high safety.
Embodiment IV
On the basis of the embodiment 1, further, in step S1, the locking notch 4 is made of a concrete structure and should be 30cm higher than the ground; the top of the fore shaft 4 is provided with a steel plate cushion block for bearing the load transmitted to the retaining wall by the retaining cylinder positioning steel plate 9 when the steel retaining cylinder 5 follows, and the fore shaft is prevented from being damaged in the following process of the steel retaining cylinder.
Further, in step S3, after the pile location line is positioned, excavating the covering soil layer by layer from top to bottom by adopting pick and spade excavation, if meeting a hard soil layer, crushing the covering soil layer by using a drill rod, wherein the size of the excavated section is controlled according to the outer diameter of the steel casing 5; the height of each section of excavation is 1.0m according to geological conditions; the earthwork of the middle part is excavated firstly, and then the periphery is expanded, so that the section size of the excavated pile hole is effectively controlled.
Further, in step S4, when the first section of steel casing 5 is lowered, welding a casing positioning steel plate 9 at the top end of the steel casing 5, fixing the steel casing 5 on the locking notch through the casing positioning steel plate 9, then continuing to excavate the pile foundation, after the second section is excavated, connecting the second section of steel casing, when connecting the second section of steel casing, hoisting the second section of steel casing by using a crane, then welding the second section of steel casing with the first section of steel casing 5, removing the casing positioning steel plate 9 at the top end of the first section of steel casing 5, and slowly lowering the steel casing 5 to the bottom of the hole by using the crane; and welding a pile casing positioning steel plate 9 on the second section of steel pile casing, placing the pile casing positioning steel plate 9 on the locking notch to prevent the steel pile casing 5 from falling in the excavation process, then continuing excavation, and circulating the steps until the steel pile casing 5 is embedded and finished.
Fifth embodiment
Further, step S5 specifically includes, S501, coring around the pile hole: drilling holes by using a water mill, wherein the holes are drilled along the periphery of a pile hole 14, a coring point is arranged along the inner wall of the pile hole 14, a coring circle is tangent to the inner wall of a locking notch 4, the hole is inclined to the outer side of a well hole by 3-5 degrees during drilling, the size of a drilling tool is reserved, the diameter of the pile is guaranteed to be unchanged during circular construction, then peripheral rock cores are sequentially drilled, and after the peripheral rock cores are completely drilled, an annular face-to-empty surface is formed in an intermediate rock body;
s502, pile core punching: after the drilling and coring construction is finished, drilling holes on the rock mass by using an electric hand drill, dividing the pile core rock into 6 equal parts or 8 equal parts, and adjusting the concrete equal parts according to the diameter of the pile so as to facilitate the rock mass to break;
s503, pile core decomposition: inserting a steel wedge into a hole drilled by the electric hand drill, and striking the steel wedge to sequentially split the rock mass until the pile core rock mass of the layer is completely fractured;
s504, outward transportation of the drill core: the water mill drill construction is carried out, the taken drill core is carried out, the drill core is carried out from one side of the pile hole 14, the bucket 10 is lifted to the locking opening 4 of the pile hole 14 through the winch 12, the winch 12 is rotated, the stone in the bucket 10 is dumped into the slag discharging hopper and conveyed to a specified slag discarding field, the next round of drilling coring is continued after the stone is cleaned, and the crushing and carrying construction is carried out.
Because the wall of the pile foundation hole is in a sawtooth shape after the core is drilled by the water mill drill, in order to ensure that the effective pile diameter is consistent with the designed pile diameter, rock sawteeth occupying the space of the pile foundation are knocked off. Therefore, further, step S6 includes marking the designed pile center in the pile hole through the locking pile protection, checking the deviation condition of the pile foundation bottom and timely correcting the deviation, and marking the drilling and coring position of the peripheral water mill drill of the next cycle to enter the pile digging construction of the next cycle.
Claims (7)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921034712.XU CN210507418U (en) | 2019-07-04 | 2019-07-04 | A Construction Structure Near Existing Line Bridge Pile Foundation |
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| CN201921034712.XU CN210507418U (en) | 2019-07-04 | 2019-07-04 | A Construction Structure Near Existing Line Bridge Pile Foundation |
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| CN210507418U true CN210507418U (en) | 2020-05-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397026A (en) * | 2019-07-04 | 2019-11-01 | 中交二公局第二工程有限公司 | A kind of construction method and constructing structure for closing on both wired bridge pile foundations |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397026A (en) * | 2019-07-04 | 2019-11-01 | 中交二公局第二工程有限公司 | A kind of construction method and constructing structure for closing on both wired bridge pile foundations |
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Effective date of registration: 20250311 Address after: 210000 No. 396 Binjiang Avenue, Jiangbei new area, Nanjing, Jiangsu Patentee after: East China Construction Co., Ltd. of CCCC Second Highway Engineering Co.,Ltd. Country or region after: China Address before: 710119 No.29, No.1 Enterprise Park, West Avenue, high tech Zone, Xi'an City, Shaanxi Province Patentee before: CCCC-SHEC SECOND ENGINEERING Co.,Ltd. Country or region before: China |