CN104294819A - Construction method of cast-in-place pile - Google Patents
Construction method of cast-in-place pile Download PDFInfo
- Publication number
- CN104294819A CN104294819A CN201410611475.4A CN201410611475A CN104294819A CN 104294819 A CN104294819 A CN 104294819A CN 201410611475 A CN201410611475 A CN 201410611475A CN 104294819 A CN104294819 A CN 104294819A
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- China
- Prior art keywords
- lower sleeve
- concrete
- casing
- upper bush
- pile
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
Abstract
The invention discloses a construction method of a cast-in-place pile. The construction of the cast-in-place pile is finished through the steps of digging the ground, forming a pile hole, mounting a lower sleeve, placing a steel reinforcement cage, bending a main reinforcement, mounting an upper sleeve, pouring concrete, hanging a conduit, continuously pouring the concrete into a pile body until the surface of the concrete is raised to be level with the top surface of the upper sleeve, then, pulling out the conduit, removing the upper sleeve, eliminating a part of an over-pouring pile head, aligning the main reinforcement, removing the lower sleeve, and pulling out a protecting casing. The invention provides a new construction method of the cast-in-place pile, and the steel reinforcement cage is not deflected and floated upwards in pouring the concrete. The construction of the cast-in-place pile is convenient; the labor intensity of the construction of breaking the pile head by workers is greatly reduced; the construction efficiency is improved.
Description
Technical field
The present invention relates to building foundation engineering technical field, particularly a kind of construction method of castinplace pile.
Background technology
Friction when castinplace pile has a construction, without the advantage such as soil compaction, noise be little, to be widely applied in all kinds of civil construction project.In perfusion formation of pile, due to cement paste returning, in filling process, pile body top falls into the reason such as earth, impurity unavoidably, and pile crown intensity can be caused to be difficult to ensure, therefore needs superly to fill with a part of pile body, is abolished, i.e. broken pile head in the later stage.Traditional filling pile construction flow process can be summarized as: levelling of the land, surveying setting-out, bury casing, boring and clear hole underground, lay reinforcing cage, hang conduit, concrete perfusion, dismounting conduit, excavate inter-pile soil, broken pile head.
In above-mentioned traditional construction flow process; broken pile head operation is carried out after pile body filling concrete completes and reaches some strength or design strength; first excavate inter-pile soil to the super complete exposure of pile body of filling with part; for the pile body of super filling; it exceeds the instruments such as reinforcing cage main muscle part emery wheel and blocks; concrete cover outside main muscle is carefully destroyed by the instrument such as part pneumatic pick containing main muscle, and confirm that main reinforce position descendant hammer hits bore bit, at design of pile top absolute altitude place, support is disconnected.This traditional cast-in-place pile construction method, is subject to the restriction of main muscle, and the labour intensity of workman's broken pile head is very large, and operating efficiency is very low.
Summary of the invention
The present invention is to solve the problem, and provides a kind of easy construction, is conducive to the cast-in-place pile construction method of quick broken pile head.
Technical scheme of the present invention is: a kind of cast-in-place pile construction method, comprises the following steps:
(1) excavate ground: excavation original ground or foundation trench bottom surface, cutting depth should ensure more than the ground of super filling part pile body all after excavation, and reserves the degree of depth that pile body top embeds cushion cap, and super part pile body height of filling with should not be less than 80cm;
(2) stake holes is formed: on the construction ground that excavation is formed afterwards, bury the casing with flange I underground, casing installs and should ensure that casing end face absolute altitude is for design stake top mark is high or in specification allowable variation, take casing as guiding punching, form satisfactory stake holes;
(3) lower sleeve is installed: the lower sleeve with flange II is installed on casing, with bolt, lower sleeve and casing is pasted close linking together; Described lower sleeve internal diameter is identical with casing, high 10 ~ 15cm, and its upper mouth has circumferential semi-circular recesses, and number of recesses is identical with the quantity of muscle main in reinforcing cage, groove diameter 0.5 ~ 1.0cm larger than main muscle diameter;
(4) lay reinforcing cage, bend main muscle: be placed in stake holes by reinforcing cage, and main for reinforcing cage corresponding for lower sleeve upper mouth groove bottom muscle position is bent, make the protruding groove of main muscle of more than bending place;
(5) install sleeve: the upper bush with flange III is installed on lower sleeve, with bolt, upper bush and lower sleeve are pasted close linking together; Described upper bush internal diameter is identical with lower sleeve, upper bush height be super fill with part pile body high deduct lower sleeve high (height of super perfusion part pile body be lower sleeve and upper bush height and), the lower edge mouth of upper bush has circumferential semi-circular recesses, and the quantity of groove is identical with the groove arranged in lower sleeve with diameter; After upper bush installation, the respective slot of its each groove and aforementioned lower sleeve forms circular hole;
(6) concrete perfusion: hang conduit, continous pouring pile body concrete rises to concrete surface and flushes with upper bush end face;
(7) remove upper bush: after pile body filling concrete completes, extract conduit, removed by upper bush, casing is stayed in the soil body, and now lower sleeve is still arranged on casing;
(8) part super filling pile crown is abolished: after removing upper bush, if the not yet initial set of the concrete in upper bush, with smooth stiff sheet from lower sleeve upper mouth by the concordant excision of this part concrete, if this part concrete initial set, after final set by its with cutting tools such as emery wheels from lower sleeve upper mouth by its concordant excision;
(9) main muscle straightening, abolishes residue super filling pile crown: after pile body concrete reaches design strength, by the main muscle straightening of bending, remove lower sleeve, and artificial chisel is except a small amount of surpassing remaining in lower sleeve filling with concrete; When super filling pile crown is all abolished complete, upwards extract casing.
Further, the inwall of described lower sleeve and upper bush all scribbles concrete isolation agent;
Further, in described step (4), the angle of bending is no more than 90 degree;
Further, the wall thickness of described lower sleeve and upper bush is all no more than casing wall thickness;
Further, in described step (7), remove upper bush and carry out immediately after extracting conduit, or carry out after pile body concrete curing a period of time;
Further, described stiff sheet is steel plate or plank, and plate is wide is not less than pile body diameter;
Further, in described step (4), adopt Portable reinforcing steel bar to bend stretching all-in-one and bend main muscle;
Further, in described step (9), Portable reinforcing steel bar is adopted to bend the main muscle of stretching all-in-one straightening.
beneficial effect of the present invention
The invention provides a kind of new method of filling pile construction, by preposition for the operation excavating inter-pile soil before broken pile head in conventional construction method, pile body has poured into can abolish super major part (also can abolish after health a period of time) of filling with pile crown easily and efficiently, small part pile crown is only stayed manually to abolish after reaching design strength, easy construction, greatly reduce the labour intensity of workman's broken pile head construction, improve efficiency of construction.Because the main muscle in reinforcing cage has carried out outside bending process in the bottom of lower jacket casing groove, therefore the pile body in upper bush is not containing main muscle, this part pile body can be abolished easily after removing upper bush, super pile crown of filling with is arranged in the part of lower sleeve when manually abolishing, due to have lower sleeve as mark instruction, there will not be super broken and damage pile body situation.Main muscle bending in the present invention and the connection of casing and sleeve can also play the effect of fixing reinforcing cage position, to make it in filling concrete not off normal, non-rising.The casing with flange used in the present invention, sleeve, connecting bolt etc. all can have enough to meet the need use, cost-saving.
Accompanying drawing explanation
Fig. 1 is the casing structure schematic diagram in the construction method of castinplace pile of the present invention.
Fig. 2 is the lower sleeve structural representation in the construction method of castinplace pile of the present invention.
Fig. 3 is the upper bush structural representation in the construction method of castinplace pile of the present invention;
Fig. 4 is casing of the present invention, lower sleeve, upper bush connecting installation structure schematic diagram.
In each figure: 1. flange I, 2. flange II, 3. lower sleeve groove, 4. flange III, 5. upper bush groove, 6. connecting bolt.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the present invention are described further.
Embodiment 1:
See Fig. 1 to Fig. 4, a kind of cast-in-place pile construction method, its construction sequence is as follows:
(1) excavate ground: excavation original ground or foundation trench bottom surface, more than the ground of the pile body that cutting depth should ensure to intend super filling part all after excavation reserve the degree of depth that pile body top embeds cushion cap;
(2) stake holes is formed: on the construction ground that excavation is formed afterwards, bury the casing with flange I underground, and coat concrete isolation agent at casing inwall, casing installs and should ensure that casing end face absolute altitude is for design stake top mark is high or within the scope of specification allowable variation, then be guiding punching with casing, and form the stake holes meeting designing requirement;
(3) lower sleeve is installed: to install on casing with flange II and wall thickness is no more than the lower sleeve of casing, by flange II and flange I, lower sleeve and casing is pasted close linking together with bolt, and coat concrete isolation agent at lower sleeve inwall; Lower sleeve internal diameter is identical with casing, high 10 ~ 15cm, and its upper mouth has circumferential semi-circular recesses, and number of recesses is identical with the quantity of muscle main in reinforcing cage, groove diameter 0.5 ~ 1.0cm larger than main muscle diameter;
(4) reinforcing cage is laid, bend main muscle: be placed in by reinforcing cage in stake holes, and bend stretching all-in-one with Portable reinforcing steel bar and main for reinforcing cage corresponding for lower sleeve upper mouth groove bottom muscle position carried out bending process, the angle of bending is no more than 90 degree, makes the protruding groove of main muscle of more than bending place;
(5) install sleeve: to install on lower sleeve with flange III and wall thickness is no more than the upper bush of casing, by flange III and flange II, upper bush and lower sleeve are pasted close linking together with bolt, and coat concrete isolation agent at upper bush inwall; Upper bush internal diameter is identical with lower sleeve, the height of upper bush be super fill with part pile body high deduct lower sleeve high (height of super perfusion part pile body be lower sleeve and upper bush height and), the lower edge mouth of upper bush has circumferential semi-circular recesses, and the quantity of groove and diameter are with the groove arranged in aforementioned lower sleeve; After upper bush installation, the respective slot of its each groove and aforementioned lower sleeve forms circular hole;
(6) concrete perfusion: hang conduit, continous pouring pile body concrete rises to concrete surface and flushes with upper bush end face;
(7) remove upper bush: after pile body filling concrete completes, extract conduit, removed by upper bush immediately, casing is stayed in the soil body, and now lower sleeve is still arranged on casing;
(8) part super filling pile crown is abolished: after removing upper bush, not main muscle in the pile crown concrete exposed, if this part pile crown concrete not yet initial set, the stiff sheet of pile body diameter is not less than with smooth and width, as steel sheet or veneer, from lower sleeve upper mouth by the concordant excision of this part concrete, if this part pile crown concrete initial set, after final set by its with cutting tools such as emery wheels from lower sleeve upper mouth by its concordant excision;
(9) main muscle straightening, abolishes residue super filling pile crown: after pile body concrete reaches design strength, by the main muscle straightening of bending, remove lower sleeve, and artificial chisel, except a small amount of surpassing remaining in lower sleeve filling with concrete, when super filling pile crown is all abolished complete, upwards extracts casing.
Embodiment 2: see Fig. 1 to Fig. 4, a kind of cast-in-place pile construction method, as different from Example 1, in described step (7), removes upper bush and carries out after pile body concrete curing a period of time.
Finally it should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention but not restriction technologies scheme, although applicant's reference preferred embodiment is to invention has been detailed description, will be understood by those skilled in the art that, those are modified to the present invention or equivalent replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of right of the present invention.
Claims (8)
1. a cast-in-place pile construction method, is characterized in that, comprises the following steps:
(1) excavate ground: excavation original ground or foundation trench bottom surface, cutting depth should ensure more than the ground of super filling part pile body all after excavation, and reserves the degree of depth that pile body top embeds cushion cap, and super part pile body height of filling with is not less than 80cm;
(2) stake holes is formed: on the construction ground that excavation is formed afterwards, bury the casing with flange I underground, casing installs and should ensure that casing end face absolute altitude is for design stake top mark is high or in specification allowable variation, take casing as guiding punching, form satisfactory stake holes;
(3) lower sleeve is installed: the lower sleeve with flange II is installed on casing, with bolt, lower sleeve and casing is pasted close linking together; Described lower sleeve internal diameter is identical with casing, high 10 ~ 15cm, and its upper mouth has circumferential semi-circular recesses, and number of recesses is identical with the quantity of muscle main in reinforcing cage, groove diameter 0.5 ~ 1.0cm larger than main muscle diameter;
(4) lay reinforcing cage, bend main muscle: be placed in stake holes by reinforcing cage, and main for reinforcing cage corresponding for lower sleeve upper mouth groove bottom muscle position is bent, make the protruding groove of main muscle of more than bending place;
(5) install sleeve: the upper bush with flange III is installed on lower sleeve, with bolt, upper bush and lower sleeve are pasted close linking together; Described upper bush internal diameter is identical with lower sleeve, and upper bush height is high for surpassing the high lower sleeve that deducts of filling part pile body, and the lower edge mouth of upper bush has circumferential semi-circular recesses, and the quantity of groove is identical with the groove arranged in lower sleeve with diameter; After upper bush installation, the respective slot of its each groove and aforementioned lower sleeve forms circular hole;
(6) concrete perfusion: hang conduit, continous pouring pile body concrete rises to concrete surface and flushes with upper bush end face;
(7) remove upper bush: after pile body filling concrete completes, extract conduit, removed by upper bush, casing is stayed in the soil body, and now lower sleeve is still arranged on casing;
(8) part super filling pile crown is abolished: after removing upper bush, if the not yet initial set of the concrete in upper bush, with smooth stiff sheet from lower sleeve upper mouth by the concordant excision of this part concrete, if this part concrete initial set, after final set by its with cutting tools such as emery wheels from lower sleeve upper mouth by its concordant excision;
(9) main muscle straightening, abolishes residue super filling pile crown: after pile body concrete reaches design strength, by the main muscle straightening of bending, remove lower sleeve, and artificial chisel is except a small amount of surpassing remaining in lower sleeve filling with concrete; When super filling pile crown is all abolished complete, upwards extract casing.
2. cast-in-place pile construction method as claimed in claim 1, is characterized in that: the inwall of described casing, lower sleeve and upper bush all scribbles concrete isolation agent.
3. cast-in-place pile construction method as claimed in claim 1, is characterized in that: in described step (4), and the angle of the main muscle bending of reinforcing cage is no more than 90 degree.
4. cast-in-place pile construction method as claimed in claim 1, is characterized in that: the wall thickness of described lower sleeve and upper bush is all no more than casing.
5. cast-in-place pile construction method as claimed in claim 1, is characterized in that: in described step (7), carry out the dismounting of upper bush after extracting conduit immediately.
6. cast-in-place pile construction method as claimed in claim 1, is characterized in that: in described step (7), carry out the dismounting of upper bush after pile body concrete curing a period of time.
7. cast-in-place pile construction method as claimed in claim 1, it is characterized in that: described stiff sheet is steel plate or plank, the width of steel plate or plank is not less than pile body diameter.
8. cast-in-place pile construction method as claimed in claim 1, is characterized in that: adopt Portable reinforcing steel bar to bend stretching all-in-one and bend main muscle and the main muscle of straightening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611475.4A CN104294819B (en) | 2014-11-04 | 2014-11-04 | A kind of construction method of castinplace pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611475.4A CN104294819B (en) | 2014-11-04 | 2014-11-04 | A kind of construction method of castinplace pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104294819A true CN104294819A (en) | 2015-01-21 |
| CN104294819B CN104294819B (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410611475.4A Expired - Fee Related CN104294819B (en) | 2014-11-04 | 2014-11-04 | A kind of construction method of castinplace pile |
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| CN (1) | CN104294819B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674796A (en) * | 2015-03-06 | 2015-06-03 | 中国建筑第二工程局有限公司 | Formwork system of underground shelter cast-in-place pile and construction method thereof |
| CN107214843A (en) * | 2017-07-06 | 2017-09-29 | 中建八局第三建设有限公司 | One kind is exempted to cut pile crown type precast square pile constructing device and its construction method |
| CN108867643A (en) * | 2018-06-06 | 2018-11-23 | 中交二公局第工程有限公司 | Ultra-long pile base concrete casing method for pulling out |
| 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 |
| CN111042125A (en) * | 2019-12-12 | 2020-04-21 | 三峡大学 | Double-layer pile casing device for limiting expansion of head of cast-in-place pile and construction method |
| CN113374425A (en) * | 2021-07-05 | 2021-09-10 | 浙江工业职业技术学院 | Exempt from to irritate stake perforating device in clear hole |
| CN114215061A (en) * | 2021-12-29 | 2022-03-22 | 中铁二局集团有限公司 | Pile head breaking device and pile breaking construction method |
| CN114837183A (en) * | 2022-02-25 | 2022-08-02 | 中铁十五局集团城市建设工程有限公司 | Cast-in-place concrete pile head separation device and pile head breaking method |
| CN117569363A (en) * | 2024-01-16 | 2024-02-20 | 江苏神禹港务工程有限公司 | Connecting device and connecting method for PHC pipe pile and high-strength prestress bearing platform |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674796A (en) * | 2015-03-06 | 2015-06-03 | 中国建筑第二工程局有限公司 | Formwork system of underground shelter cast-in-place pile and construction method thereof |
| CN107214843A (en) * | 2017-07-06 | 2017-09-29 | 中建八局第三建设有限公司 | One kind is exempted to cut pile crown type precast square pile constructing device and its construction method |
| CN108867643A (en) * | 2018-06-06 | 2018-11-23 | 中交二公局第工程有限公司 | Ultra-long pile base concrete casing method for pulling out |
| 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 |
| CN109667226B (en) * | 2018-12-14 | 2021-04-16 | 中建八局第四建设有限公司 | Cable rope construction method |
| CN111042125A (en) * | 2019-12-12 | 2020-04-21 | 三峡大学 | Double-layer pile casing device for limiting expansion of head of cast-in-place pile and construction method |
| CN113374425A (en) * | 2021-07-05 | 2021-09-10 | 浙江工业职业技术学院 | Exempt from to irritate stake perforating device in clear hole |
| CN113374425B (en) * | 2021-07-05 | 2023-05-16 | 浙江工业职业技术学院 | Filling pile punching device free of hole cleaning |
| CN114215061A (en) * | 2021-12-29 | 2022-03-22 | 中铁二局集团有限公司 | Pile head breaking device and pile breaking construction method |
| CN114215061B (en) * | 2021-12-29 | 2023-04-07 | 中铁二局集团有限公司 | Pile head breaking device and pile breaking construction method |
| CN114837183A (en) * | 2022-02-25 | 2022-08-02 | 中铁十五局集团城市建设工程有限公司 | Cast-in-place concrete pile head separation device and pile head breaking method |
| CN117569363A (en) * | 2024-01-16 | 2024-02-20 | 江苏神禹港务工程有限公司 | Connecting device and connecting method for PHC pipe pile and high-strength prestress bearing platform |
| CN117569363B (en) * | 2024-01-16 | 2024-04-09 | 江苏神禹港务工程有限公司 | Pile foundation supergrouting concrete removing device and method thereof |
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| CN104294819B (en) | 2016-04-27 |
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Granted publication date: 20160427 Termination date: 20191104 |