CN106400803A - Integral cast-in-situ bored pile head breaking process - Google Patents
Integral cast-in-situ bored pile head breaking process Download PDFInfo
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- CN106400803A CN106400803A CN201610929073.8A CN201610929073A CN106400803A CN 106400803 A CN106400803 A CN 106400803A CN 201610929073 A CN201610929073 A CN 201610929073A CN 106400803 A CN106400803 A CN 106400803A
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- pile
- pile crown
- cast
- situ bored
- pile head
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/005—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof removing the top of placed piles of sheet piles
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an integral cast-in-situ bored pile head breaking process. The process comprises the following steps that main ribs of an exposed bearing table of a steel reinforcement cage and the exposed surfaces of sounding pipes are directly sleeved with PE plastic tubes machined in advance after a cast-in-situ bored pile is drilled and before the steel reinforcement cage is installed; after a foundation pit is excavated, an annular mark is made in the position of the design elevation of a pile head with red oil paint through survey setting out, a small cutting machine is used for cutting for a shallow circle, two pairs of drilling holes are drilled in symmetrical positions of the design elevation of the pile head, and a hydraulic splitting machine is adopted and inserted into the holes for splitting, so that the pile head is separated; and a rebar is inserted into a horizontal PVC tube pre-buried in the upper portion of the pile head, steel wire ropes are hung, and a lifting device is used for lifting out the pile head on the upper portion. The process is easy to operate, safe, reliable, low in cost, high in working efficiency, and capable of reducing pollution of noise, dust and building rubbish on the environment. Meanwhile, by adoption of the integral cast-in-situ bored pile head breaking process, damage of human factors to rebars and the sounding pipes is avoided, the separation surface of the pile head is flat, and the quality of the pile foundation is guaranteed.
Description
Technical field
A kind of present invention cast-in-situ bored pile pile crown integrally abolishes technique, is related to ground and foundation engineering technical field, specifically
It is related to cast-in-situ bored pile pile crown and abolish construction technology.
Background technology
During cast-in-situ bored pile concrete perfusion, bored concrete pile top mark height should exceed design stake top absolute altitude 0.5～1.0m, ensures
Pile foundation concrete strength, the pile crown part exceeding design of pile top absolute altitude also will be cut in bearing platform construction, therefore major diameter
An always individual difficult problem abolished by the pile crown of pile foundation.The traditional restructuring bankrupt of domestic cast-in-situ bored pile pile crown adopts two kinds of forms at present：
A kind of is manually to adopt pneumatic pick to peel off hangs muscle, is abolished remaining pile crown after stretching into pile crown steel reinforcement cage cage bar and sound detecting pipe again；
Another kind is directly hammered into shape broken for quartering hammer.Traditional abolish that pile crown method all can cause to stretch into the reinforcing bar of pile crown and sound detecting pipe is curved
Bent impaired, pile crown out-of-flatness, dust pollution are serious, simultaneously time-consuming；Not only pile crown is abolished quality and be cannot be guaranteed, and does not reach
Standardized construction requires, and work efficiency is low, and noise, dust are big, also can produce more building waste.
Content of the invention
For overcoming defect present in prior art, the invention provides work integrally abolished by a kind of cast-in-situ bored pile pile crown
Skill, solves cast-in-situ bored pile pile crown and adopts the work efficiency that traditional broken pile method exists is low, noise is big, dust is big, building waste is many etc.
Problem.Cast-in-situ bored pile pile crown abolishes new technology using overall, improves operating environment, has saved resource and cost, improve
Construction quality and work efficiency, solve the technical barrier that large diameter pile foundation pile crown is abolished.
The technical scheme that the present invention takes is：
A kind of cast-in-situ bored pile pile crown integrally abolishes technique, comprises the following steps：
Step 1：After cast-in-situ bored pile boring terminates, before steel reinforcement cage is installed, the PE processing in advance pipe is directly inserted in reinforcing bar
Cage exposes cage bar and the sound detecting pipe exposed surface of cushion cap, and its position is fixed it is ensured that not rotating and moving up and down；PE manages
So that pile crown concrete and cage bar is kept apart, do not bond.
Step 2：After the completion of excavation of foundation pit, through surveying and locating in pile crown designed elevation position, make annular with red paint
Mark, using the simple ring cutting of minitype cutting machine one week, in pile crown designed elevation symmetric position brill two to boring, using hydraulic splitting
Machine symmetrically inserts in hole and is cleaved, so that pile crown departs from；
Step 3：Then wear reinforcing bar, hanging steel rope in the pre-buried horizontal pvc pipe in pile crown top, hung out using lifting appliance
Portion's pile crown.
Described PE bore at least 5mm more than bigger than steel reinforcement cage cage bar diameter, to facilitate PE pipe to install, PE pipe upper port is adopted
Seal with adhesive tape and bend 180 ° to be tightened with tied silk, PE infratubal port adhesive tape and cage bar are wound around closure, and with tied silk and cage bar
Fixed, prevent when concrete perfusion is constructed, cement mortar flows to PE pipe, the bond stress increasing cage bar with concrete affects stake
Head later stage detached job, prevents PE pipe during concrete perfusion to be moved simultaneously.
Described hole as 4 horizontal drillings, in same level, adjacent drilling horizontal angle is 90 ° to drilling axis, bores
Bore dia 40mm, drilling depth 300 ~ 400mm, boring is symmetrical and is evenly arranged, and can guarantee that pile crown energy under stress concentration effect
Quickly it is split, ensure that splitting surface is as smooth as possible simultaneously.
Described pvc pipe diameter in 40mm, its length 20cm bigger than cast-in-situ bored pile pile crown diameter, make pvc pipe
Pile crown 10cm is respectively exposed at two ends, the insertion of convenient reinforcing bar when lifting by crane, and prevents from being wholly embedded into impact later stage stake in concrete
Head hangs.
In cast-in-situ bored pile filling concrete to during from stake top 30-40cm, pvc pipe level is embedded in pile crown, because of stake
Head top is plain concrete, prevents buried depth damaged generation safety problem not in lifting, outstanding during the embedded convenient lifting of pvc pipe
Hang the reinforcing bar insertion pile crown of steel wire rope, when pile crown is separated with pile body, be inserted into reinforcing bar, hanging steel rope in pvc pipe, be easy to stake
Head hangs.
Technique integrally abolished by a kind of present invention cast-in-situ bored pile pile crown, and more traditional artificial pneumatic pick is peeled off and Mechanical Crushing side
It is simple to operate that method abolishes pile crown, and work efficiency is high, and it is easily controllable that face quality abolished by pile crown, greatly reduces noise and dust pollution, subtracts
Building waste, economy, environmental protection, energy-conservation are lacked.
Brief description
Fig. 1 is pile crown structural representation of the present invention.
Fig. 2 lays for pvc pipe of the present invention and paints annulet schematic diagram.
Fig. 3 is present invention splitting hole drilling arrangement schematic diagram.
Fig. 4 hangs schematic diagram for pile crown of the present invention.
Specific embodiment
As shown in Fig. 1 ~ Fig. 4, a kind of cast-in-situ bored pile pile crown integrally abolishes technique, comprises the following steps：
Step 1：After cast-in-situ bored pile boring terminates, before steel reinforcement cage is installed, the PE processing in advance pipe 3 is directly inserted in reinforcing bar
Cage exposes cage bar and sound detecting pipe 2 exposed surface of cushion cap, and its position is fixed it is ensured that not rotating and moving up and down；PE
Pipe 3 makes pile crown concrete and cage bar keep apart, and does not bond.
Step 2：After the completion of excavation of foundation pit, through surveying and locating in pile crown designed elevation position, make annular with red paint
Mark 8, using the simple ring cutting of minitype cutting machine one week, is bored two to boring 9 in pile crown designed elevation symmetric position, is split using hydraulic pressure
Split machine and symmetrically insert in hole and cleaved, so that pile crown 12 departs from；
Step 3：Then wear reinforcing bar 10, hanging steel rope 11 in the pre-buried horizontal pvc pipe 6 in pile crown 12 top, set using lifting
Standby hang out top pile crown.
Described PE pipe 3 internal diameter at least 5mm more than bigger than steel reinforcement cage cage bar diameter, PE pipe upper port 4 adopts tape seal simultaneously
180 ° of bending is tightened with tied silk, and PE infratubal port 5 uses adhesive tape to be wound around closure with cage bar, and fixed with cage bar with tied silk.
Described boring 9 is 4 horizontal drillings, and in same level, adjacent drilling horizontal angle is 90 ° to drilling axis,
Bore diameter 40mm, drilling depth 300 ~ 400mm.
Described pvc pipe 6 diameter in 40mm, its length 20cm bigger than cast-in-situ bored pile pile crown diameter.
In cast-in-situ bored pile filling concrete to during from stake top 30-40cm, pvc pipe 6 level is embedded in pile crown 12,
When pile crown 12 is separated with pile body, it is inserted into reinforcing bar 10, hanging steel rope 11 in pvc pipe 6, be easy to pile crown 12 and hang.
Specific implementation step is as follows：
The first step, steel reinforcement cage under enter stake holes 1 before, using PE pipe 3 by stretch into the design stake top absolute altitude more than 7 of pile crown perpendicular muscle and
Sound detecting pipe 2 entangles, and PE pipe upper port 4 using tape seal and bends 180 ° and tightened with tied silk, and PE infratubal port 5 uses adhesive tape and master
Muscle or sound detecting pipe are wound around and block and use tied silk fixed with cage bar.Prevent when concrete perfusion is constructed, cement mortar flows to PE
Pipe 3, the bond stress increasing cage bar with concrete affects pile crown later stage detached job, prevents PE pipe 3 during concrete perfusion simultaneously
Raw movement.
Second step, bored concrete pile concrete perfusion to from stake top 30-40cm when, will be bigger than cast-in-situ bored pile pile crown diameter for length
20cm about, diameter 40mm about pvc pipe 6 level be embedded in pile crown 12, as when pile crown 12 is separated with pile body 13,
Pvc pipe 6 is inserted into the suspension centre of reinforcing bar 10 hanging steel rope 11.Because pile crown 12 top is plain concrete, prevent buried depth from not rising
Damaged generation safety problem when hanging, during the embedded convenient lifting of pvc pipe 6, the reinforcing bar insertion pile crown of hanging steel rope.
3rd step, completes in bored pile construction, after excavation of foundation pit, using measuring instrument measuring and design stake top absolute altitude 7
Position, and make paint annulet 8 it is ensured that the accurate of position abolished by pile crown with red paint in this position.Then adopt little
The simple ring cutting surface of type cutting machine one week, this ring cutting gap plays the effect of induction splitting it is ensured that using the hydraulic splitting machine transplanting of rice
When entering horizontal drilling splitting, pile crown parting surface accurately can split along at ring cutting.
4th step, bores 4 horizontal drillings 9 in design stake top absolute altitude 7 symmetric position, holes 9 axis in same level,
Adjacent boring 9 horizontal sextant angles are 90 °, and hole 9 diameter 40mm, and hole 9 depth 300 ~ 400mm.Boring is symmetrical and is evenly arranged, energy
Ensure that pile crown can quickly be split under stress concentration effect, ensure that splitting surface is as smooth as possible simultaneously.
5th step, is symmetrically inserted in horizontal drilling 9 hole using hydraulic splitting machine and is cleaved, because stress concentration is made
With making pile crown 12 be able to separate with pile body 13.
6th step, inserts the reinforcing bar 10 of more than diameter 20mm in the pre-buried pvc pipe of pile crown 6, and reinforcing bar 10 two ends hang steel
The pile crown abolished 12 is hung by cord 11 using crane gear.Pre-buried pvc pipe makes reinforcing bar assign conveniently, and reinforcing bar repeats and makes
With, it is to avoid the operation of reinforcing bar is assigned in interim boring, has saved the input of the artificial of embedded bar suspension ring and Master Cost.
7th step, stake top parting surface 14 is carried out smooth process, then adopts Portable steel bar bending machine to erect muscle 2 to pile crown
Carry out crotch, complete Stake head handling.
Cast-in-situ bored pile pile crown of the present invention integrally abolishes technique, simple to operate, safe and reliable, low cost, and work efficiency is high, significantly
Decrease noise, dust, the pollution to environment for the building waste, cast-in-situ bored pile pile crown is integrally abolished technique and avoided artificially simultaneously
The infringement to reinforcing bar, sound detecting pipe for the factor, pile crown parting surface smooth it is ensured that pile foundation quality.
Claims (6)
1. a kind of cast-in-situ bored pile pile crown integrally abolishes technique it is characterised in that comprising the following steps：
Step 1：After cast-in-situ bored pile boring terminates, before steel reinforcement cage is installed, the PE processing in advance is managed（3）Directly it is inserted in steel
Muscle cage exposes cage bar and the sound detecting pipe of cushion cap（2）Exposed surface, and its position is fixed it is ensured that do not rotate and on move down
Dynamic；
Step 2：After the completion of excavation of foundation pit, through surveying and locating in pile crown designed elevation position, make annulet（8）, simple
Ring cutting one week, bores two to boring in pile crown designed elevation symmetric position（9）, cleaved in insertion hole, so that pile crown
（12）Depart from；
Step 3：Then in pile crown（12）The pre-buried horizontal pvc pipe in top（6）Inside wear reinforcing bar（10）, hanging steel rope（11）, hang
Go out top pile crown.
2. according to claim 1 a kind of cast-in-situ bored pile pile crown integrally abolish technique it is characterised in that：Described PE pipe（3）
Internal diameter at least 5mm more than bigger than steel reinforcement cage cage bar diameter, PE pipe upper port（4）Using tape seal and bend 180 ° and pricked with tied silk
Tightly, PE infratubal port（5）It is wound around closure with adhesive tape with cage bar, and fixed with cage bar with tied silk.
3. according to claim 1 a kind of cast-in-situ bored pile pile crown integrally abolish technique it is characterised in that：Described boring（9）
For 4 horizontal drillings, in same level, adjacent drilling horizontal angle is 90 ° to drilling axis, bore diameter 40mm, boring
Depth 300 ~ 400mm.
4. according to claim 1 a kind of cast-in-situ bored pile pile crown integrally abolish technique it is characterised in that：Described pvc pipe（6）
Diameter in 40mm, its length 20cm bigger than cast-in-situ bored pile pile crown diameter.
5. according to claim 1 a kind of cast-in-situ bored pile pile crown integrally abolish technique it is characterised in that：In cast-in-situ bored pile
Filling concrete to from stake top 30-40cm when, by pvc pipe（6）Level is embedded in pile crown（12）In, in pile crown（12）Divide with pile body
From when, in pvc pipe（6）It is inserted into reinforcing bar（10）, hanging steel rope（11）, it is easy to pile crown and hang.
6. a kind of cast-in-situ bored pile pile crown integrally abolishes technique it is characterised in that comprising the following steps：
The first step, steel reinforcement cage under enter stake holes（1）Before, using PE pipe（3）The design stake top absolute altitude of pile crown will be stretched into（7）Above
Perpendicular muscle and sound detecting pipe（2）Entangle, PE pipe upper port（4）Using tape seal and bend 180 ° and tightened with tied silk, PE infratubal port
（5）It is wound around closure with adhesive tape with cage bar or sound detecting pipe, and fixed with cage bar with tied silk；
Second step, bored concrete pile concrete perfusion to from stake top 30-40cm when, by bigger than cast-in-situ bored pile pile crown diameter for length 20cm
Left and right, diameter 40mm about pvc pipe（6）Level is embedded in pile crown（12）In, as in pile crown（12）With pile body（13）Separate
When steel wire rope（11）Suspension centre；
3rd step, completes in bored pile construction, after excavation of foundation pit, using measuring instrument measuring and design stake top absolute altitude（7）Position
Put, and make paint annulet with red paint in this position（8）, then adopt the simple ring cutting surface one of minitype cutting machine
Week；
4th step, in design stake top absolute altitude（7）Symmetric position bores 4 horizontal drillings（9）, boring（9）Axis is in same level
Interior, adjacent boring（9）Horizontal sextant angle is 90 °, boring（9）Diameter 40mm, boring（9）Depth 300 ~ 400mm；
5th step, symmetrically inserts horizontal drilling using hydraulic splitting machine（9）Cleaved in hole, due to stress concentration effect,
Make pile crown（12）It is able to and pile body（13）Separate；
6th step, in the pre-buried pvc pipe of pile crown（6）The reinforcing bar of middle insertion more than diameter 20mm（10）, reinforcing bar（10）Two ends hang
Steel wire rope（11）, using crane gear by the pile crown abolished（12）Hang；
7th step, by stake top parting surface（14）Carry out smooth process, then adopt Portable steel bar bending machine, muscle is erected to pile crown and enters
Row crotch, completes Stake head handling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610929073.8A CN106400803A (en) | 2016-10-31 | 2016-10-31 | Integral cast-in-situ bored pile head breaking process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610929073.8A CN106400803A (en) | 2016-10-31 | 2016-10-31 | Integral cast-in-situ bored pile head breaking process |
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| CN106400803A true CN106400803A (en) | 2017-02-15 |
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| CN201610929073.8A Pending CN106400803A (en) | 2016-10-31 | 2016-10-31 | Integral cast-in-situ bored pile head breaking process |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130601A (en) * | 2017-05-31 | 2017-09-05 | 中建二局第二建筑工程有限公司 | It is a kind of to improve device and restructuring bankrupt that pile crown abolishes efficiency |
| CN107165166A (en) * | 2017-07-11 | 2017-09-15 | 中国水利水电第五工程局有限公司 | A kind of intelligent restructuring bankrupt of pile crown and device |
| CN108193684A (en) * | 2017-12-18 | 2018-06-22 | 中国二十冶集团有限公司 | Cast-in-situ bored pile pile crown detaches removing method |
| CN108385686A (en) * | 2018-03-02 | 2018-08-10 | 中铁上海工程局集团有限公司 | A kind of cast-in-situ bored pile exempts from stripping and exempts from ring cutting to cut pile crown technique |
| CN109235437A (en) * | 2018-10-30 | 2019-01-18 | 中铁北京工程局集团有限公司 | One kind abolishing pile crown method |
| CN109610455A (en) * | 2019-01-28 | 2019-04-12 | 中铁局集团有限公司 | A kind of filling pile head restructuring bankrupt |
| CN109667226A (en) * | 2018-12-14 | 2019-04-23 | 中建八局第四建设有限公司 | A kind of cable wind rope construction method |
| CN110700258A (en) * | 2019-09-26 | 2020-01-17 | 常州市市政建设工程有限公司 | Process for breaking cast-in-place pile by circular cutting method |
| CN110820742A (en) * | 2019-11-13 | 2020-02-21 | 贵州省公路工程集团有限公司 | Construction method for breaking underwater cast-in-place pile head |
| CN110847172A (en) * | 2019-10-31 | 2020-02-28 | 安徽建筑大学 | Multi-ring multi-hole construction device for cutting unset cement concrete pile head |
| CN112761154A (en) * | 2020-12-31 | 2021-05-07 | 中交一公局第二工程有限公司 | Method for breaking pile head of concrete cast-in-place pile |
| CN114718070A (en) * | 2022-05-06 | 2022-07-08 | 中铁广州工程局集团第三工程有限公司 | Construction method for breaking soil between piles and pile heads of super-irrigation cast-in-place pile |
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| CN105297729A (en) * | 2015-11-23 | 2016-02-03 | 中国葛洲坝集团第六工程有限公司 | Bridge pile foundation pile head breaking device and method |
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| JPS5991214A (en) * | 1982-11-18 | 1984-05-25 | Sumitomo Cement Co Ltd | Head treatment work of on-site pile |
| CN102312429A (en) * | 2011-07-12 | 2012-01-11 | 中铁西北科学研究院有限公司 | Rapid separation and integral hoisting method for pile head of cast-in-place concrete pile |
| CN102493434A (en) * | 2011-11-28 | 2012-06-13 | 中铁大桥局股份有限公司 | Construction method for integrally and quickly hoisting and removing pile head of bored cast-in-place pile |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130601A (en) * | 2017-05-31 | 2017-09-05 | 中建二局第二建筑工程有限公司 | It is a kind of to improve device and restructuring bankrupt that pile crown abolishes efficiency |
| CN107165166A (en) * | 2017-07-11 | 2017-09-15 | 中国水利水电第五工程局有限公司 | A kind of intelligent restructuring bankrupt of pile crown and device |
| CN107165166B (en) * | 2017-07-11 | 2019-02-19 | 中国水利水电第五工程局有限公司 | A kind of pile crown intelligence restructuring bankrupt and device |
| CN108193684A (en) * | 2017-12-18 | 2018-06-22 | 中国二十冶集团有限公司 | Cast-in-situ bored pile pile crown detaches removing method |
| CN108385686A (en) * | 2018-03-02 | 2018-08-10 | 中铁上海工程局集团有限公司 | A kind of cast-in-situ bored pile exempts from stripping and exempts from ring cutting to cut pile crown technique |
| CN109235437A (en) * | 2018-10-30 | 2019-01-18 | 中铁北京工程局集团有限公司 | One kind abolishing pile crown method |
| CN109667226A (en) * | 2018-12-14 | 2019-04-23 | 中建八局第四建设有限公司 | A kind of cable wind rope construction method |
| CN109610455A (en) * | 2019-01-28 | 2019-04-12 | 中铁局集团有限公司 | A kind of filling pile head restructuring bankrupt |
| CN109610455B (en) * | 2019-01-28 | 2021-01-08 | 中铁一局集团有限公司 | Pile head breaking method for cast-in-place pile |
| CN110700258A (en) * | 2019-09-26 | 2020-01-17 | 常州市市政建设工程有限公司 | Process for breaking cast-in-place pile by circular cutting method |
| CN110847172A (en) * | 2019-10-31 | 2020-02-28 | 安徽建筑大学 | Multi-ring multi-hole construction device for cutting unset cement concrete pile head |
| CN110847172B (en) * | 2019-10-31 | 2021-06-29 | 安徽建筑大学 | Multi-ring multi-hole construction device for cutting unset cement concrete pile head |
| CN110820742A (en) * | 2019-11-13 | 2020-02-21 | 贵州省公路工程集团有限公司 | Construction method for breaking underwater cast-in-place pile head |
| CN112761154A (en) * | 2020-12-31 | 2021-05-07 | 中交一公局第二工程有限公司 | Method for breaking pile head of concrete cast-in-place pile |
| CN114718070A (en) * | 2022-05-06 | 2022-07-08 | 中铁广州工程局集团第三工程有限公司 | Construction method for breaking soil between piles and pile heads of super-irrigation cast-in-place pile |
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