CN104727307B - For the non-uniform pile column construction method of underground - Google Patents
For the non-uniform pile column construction method of underground Download PDFInfo
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- CN104727307B CN104727307B CN201510056471.9A CN201510056471A CN104727307B CN 104727307 B CN104727307 B CN 104727307B CN 201510056471 A CN201510056471 A CN 201510056471A CN 104727307 B CN104727307 B CN 104727307B
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- pile foundation
- steel bar
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- foundation steel
- cage
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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
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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
- E02D5/48—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 discloses a kind of non-uniform pile column construction method for underground, comprise the steps: step one, hole from operation side, pile foundation steel bar cage is transferred in segmentation, step 2, after final stage pile foundation steel bar cage hand-hole, adopts pin to be fixed on operation side; Step 3, arranges reinforced mesh at pile foundation steel bar cage top; Step 4, puts into pier stud reinforcing cage, and the bottom of pier stud reinforcing cage is arranged on reinforced mesh; Step 5, puts into Pier Formwork, and the bottom of Pier Formwork is arranged on reinforced mesh, and is arranged at outside described pier stud reinforcing cage; Step 6, continues to transfer by the overall structure of step 5, until arrive the bottom in hole, and is fixedly arranged on operation side by the upper end of pier stud reinforcing cage; Step 7, fluid concrete forms pile foundation and pier stud.The present invention have easy construction, sound construction, may be used for underground variable cross-section pile construction beneficial effect.
Description
Technical field
The present invention relates to underground pile based structures technical field of construction, particularly relate to a kind of non-uniform pile column construction method for underground.
Background technology
The pile that large diameter pile foundation and minor diameter pier stud form compares conventional a kind of combination at present.Because pile foundation is different with the cross section of pier stud, the construction method of current pile is generally pile foundation of first constructing, after pile foundation construction completes, then proping formwork erection, cast pier stud.
But above-mentioned construction method has certain limitation.Such as when pile structure is used for underground, often need the construction completing pile before soil excavation, to meet the construction period requirement that uses as supporting member of pile structure.In the case, owing to not possessing the condition setting up support, first construction pile foundation conventional at present, then the construction method of proping formwork erection cast pier stud to meet above-mentioned construction requirement.
Therefore, those skilled in the art need a kind of easy construction of research, sound construction badly, may be used for the non-uniform pile column construction method of underground.
Summary of the invention
Because the above-mentioned defect of prior art, the invention provides a kind of easy construction, sound construction, may be used for the non-uniform pile column construction method of underground.
For achieving the above object, the invention provides a kind of non-uniform pile column construction method for underground, it is characterized in that, comprise the steps:
Step one, hole from operation side, after operation hole to be drilled completes, first paragraph pile foundation steel bar cage is put into hole, and the lower surface of second segment pile foundation steel bar cage is welded in the upper surface of described first paragraph pile foundation steel bar cage before being transferred by described first paragraph pile foundation steel bar cage, then the pile foundation steel bar cage after welding is down put into hole gradually;
Step 2, according to the construction method of described step one, puts into described hole successively under after all the other each section of pile foundation steel bar cage welding;
Step 3, final stage pile foundation steel bar cage is fixedly installed on described operation side, in this step, in the end one section of pile foundation steel bar cage internal fixtion is provided with reinforced mesh, and the described reinforced mesh being positioned at bottom meets to the distance of the height of pile top of pile foundation the requirement that pier stud reinforcing cage inserts the anchorage length of described pile foundation steel bar cage; Also be provided with along the axis of the periphery of described pile foundation steel bar cage the spreading reinforcing bar that many are used as described pier stud reinforcing cage suspension centre in final stage pile foundation steel bar cage;
Step 4, is fixed on described pier stud reinforcing cage on described reinforced mesh, then is fixed on described reinforced mesh by described Pier Formwork in step 3, and is arranged at the outside of described pier stud reinforcing cage.
Step 5, remove fixing the pile foundation steel bar cage being fixed on described operation side, the pile foundation steel bar cage being provided with pier stud reinforcing cage of described step 4 is continued to transfer, until arrive the bottom in described hole, and the upper surface of described pier stud reinforcing cage is fixedly arranged on described operation side;
Step 6, fluid concrete is to the described pile foundation steel bar cage of step 5, until described height of pile top, forms pile foundation;
Step 7, in fluid concrete to described Pier Formwork, forms pier stud.
Preferably, in described step 2, in final stage pile foundation steel bar cage, be also provided with along the axis of the periphery of described pile foundation steel bar cage the spreading reinforcing bar that many are used as described pier stud reinforcing cage suspension centre.
Preferably, described spreading reinforcing bar is three; Three described spreading reinforcing bars are distributed in the periphery of described pile foundation steel bar cage.
Preferably, described Pier Formwork is steel pile casting.
Preferably, described reinforced mesh is more than two.
Preferably, the upper surface of described pile foundation steel bar cage is fixedly arranged on described operation side by pin.
Beneficial effect of the present invention:
Non-uniform pile column construction method for underground of the present invention, owing to being provided with mesh sheet in pile foundation steel bar cage, pier stud reinforcing cage is arranged in mesh sheet, and be outside equipped with Pier Formwork at pier stud reinforcing cage, then cast forms foundation pile and pier stud simultaneously, needs the problem setting up separately support cast pier stud when avoiding underground construction.
On the other hand, due in the final stage pile foundation steel bar cage of pile foundation steel bar cage, axis along the periphery of described pile foundation steel bar cage is provided with the spreading reinforcing bar that many are used as described pier stud reinforcing cage suspension centre, pier stud reinforcing cage is by the location of spreading reinforcing bar, can by the middle part be positioned over exactly in pile foundation steel bar cage, simple to operate, accurate positioning, reliable.
Because the length inserting the pier stud in pile foundation meets the requirement of anchorage length, ensure that the bond strength of pier stud and pile foundation, thus ensure that pile reliability of structure.
Be described further below with reference to the technique effect of accompanying drawing to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is that the A-A of Fig. 1 is to structural representation.
Fig. 3 is that the B-B of Fig. 1 is to structural representation.
Fig. 4 is that the C-C of Fig. 1 is to structural representation.
Detailed description of the invention
As shown in Figures 1 to 4, the invention provides a kind of non-uniform pile column construction method for underground, the method comprises the following steps:
Step one, hole from operation side, after operation hole to be drilled completes, first paragraph pile foundation steel bar cage is put into hole 6, and the lower surface of second segment pile foundation steel bar cage is welded in the upper surface of first paragraph pile foundation steel bar cage before being transferred by first paragraph pile foundation steel bar cage, then the pile foundation steel bar cage after welding is down put into hole gradually.
Step 2, according to the construction method of step one, puts into hole 6 by after all the other each section of pile foundation steel bar cage welding successively.
In this step, in the end one section of pile foundation steel bar cage 1 internal fixtion is provided with two reinforced mesh 5, and the distance being positioned at the height of pile top HZ2 of reinforced mesh 5 to the pile foundation of bottom meets the requirement that pier stud reinforcing cage inserts the anchorage length of pile foundation steel bar cage.Adopt pin that operation side is fixed at pile foundation steel bar cage top.
In this step, in the end in one section of pile foundation steel bar cage, axis along the periphery of pile foundation steel bar cage is also provided with the spreading reinforcing bar 4 that three are used as pier stud reinforcing cage suspension centre, by this spreading reinforcing bar 4, pier stud reinforcing cage 2 can by the middle part be positioned over exactly in pile foundation steel bar cage 1, simple to operate, accurate positioning, reliable.
Step 3, in the steel pile casting 3 being used as Pier Formwork, put into pier stud reinforcing cage 2, the bottom of pier stud reinforcing cage 2 is arranged on reinforced mesh 5, and is positioned at steel pile casting 3.
Step 4, in pile foundation steel bar cage 1, put into the steel pile casting 3 of (need to show relation when first time occurs, can delete), the bottom of steel pile casting 3 is arranged on reinforced mesh 5.
Step 5, continues to transfer by the pile foundation steel bar cage being provided with pier stud reinforcing cage of step 4, until arrive the bottom in hole, i.e. stake low elevation HZ3 place, and by the upper surface of pier stud reinforcing cage 2, namely capital elevation HZ1 position is fixedly arranged on operation side.Detect the position of pier stud reinforcing cage 2, fine setting, it is fixed on operation side by pin after determining by position again.
Step 6, fluid concrete, to pile foundation steel bar cage 1, until concrete arrives height of pile top HZ2 place, finally forms pile foundation.
Step 7, pours in steel pile casting 3 by concrete, form pier stud, thus complete the work progress of whole pile.Pier stud casting complete, after reaching some strength, just can as the temporary support component in Excavation Process.
In the present embodiment, steel pile casting 3 and spreading reinforcing bar 4 can reclaim when the excavation of foundation pit of underground structure, reuse again, saved raw material, also reduced construction cost simultaneously when next time constructs pile.
In other embodiments, the quantity of reinforced mesh can be more, such as three, four etc., to meet fixing pier stud reinforcing cage better.
In other embodiments, the mode of operation side is fixed in the upper surface of pile foundation steel bar cage also can be other mode.
Non-uniform pile column construction method for underground of the present invention, owing to being provided with mesh sheet in pile foundation steel bar cage, pier stud reinforcing cage is arranged in mesh sheet, and be outside equipped with Pier Formwork at pier stud reinforcing cage, then cast forms foundation pile and pier stud simultaneously, needs the problem setting up separately support cast pier stud when avoiding underground construction.
On the other hand, due in the final stage pile foundation steel bar cage of pile foundation steel bar cage, axis along the periphery of described pile foundation steel bar cage is provided with the spreading reinforcing bar that many are used as described pier stud reinforcing cage suspension centre, pier stud reinforcing cage is by the location of spreading reinforcing bar, can by the middle part be positioned over exactly in pile foundation steel bar cage, simple to operate, accurate positioning, reliable.
Because the length inserting the pier stud in pile foundation meets the requirement of anchorage length, ensure that the bond strength of pier stud and pile foundation, thus ensure that pile reliability of structure.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technician in the art, all should by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (5)
1., for a non-uniform pile column construction method for underground, it is characterized in that, comprise the steps:
Step one, hole from operation side, after operation hole to be drilled completes, first paragraph pile foundation steel bar cage is put into hole, and the lower surface of second segment pile foundation steel bar cage is welded in the upper surface of described first paragraph pile foundation steel bar cage before being transferred by described first paragraph pile foundation steel bar cage, then the pile foundation steel bar cage after welding is down put into hole gradually;
Step 2, according to the construction method of described step one, puts into described hole successively under after all the other each section of pile foundation steel bar cage welding;
Step 3, final stage pile foundation steel bar cage is fixedly installed on described operation side by fastening devices, in this step, in the end one section of pile foundation steel bar cage internal fixtion is provided with two reinforced mesh, and the described reinforced mesh being positioned at bottom meets to the distance of the height of pile top of pile foundation the requirement that pier stud reinforcing cage inserts the anchorage length of described pile foundation steel bar cage; Also be provided with along the axis of the periphery of described pile foundation steel bar cage the spreading reinforcing bar that many are used as described pier stud reinforcing cage suspension centre in final stage pile foundation steel bar cage;
Step 4, is fixed on described pier stud reinforcing cage on described reinforced mesh, then is fixed on described reinforced mesh by described Pier Formwork in step 3, and is arranged at the outside of described pier stud reinforcing cage;
Step 5, remove fixing the pile foundation steel bar cage being fixed on described operation side, the pile foundation steel bar cage being provided with pier stud reinforcing cage of described step 4 is continued to transfer, until arrive the bottom in described hole, and the upper surface of described pier stud reinforcing cage is fixedly arranged on described operation side;
Step 6, fluid concrete is to the described pile foundation steel bar cage of step 5, until described height of pile top, forms pile foundation;
Step 7, in fluid concrete to described Pier Formwork, forms pier stud.
2., as claimed in claim 1 for the non-uniform pile column construction method of underground, described spreading reinforcing bar is three; Three described spreading reinforcing bars are distributed in the periphery of described pile foundation steel bar cage.
3., as claimed in claim 1 for the non-uniform pile column construction method of underground, it is characterized in that, described Pier Formwork is steel pile casting.
4., as claimed in claim 1 for the non-uniform pile column construction method of underground, it is characterized in that, described reinforced mesh is more than two.
5. the non-uniform pile column construction method for underground as described in any one of Claims 1-4, is characterized in that, the upper surface of described pile foundation steel bar cage is fixedly arranged on described operation side by pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510056471.9A CN104727307B (en) | 2015-02-03 | 2015-02-03 | For the non-uniform pile column construction method of underground |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510056471.9A CN104727307B (en) | 2015-02-03 | 2015-02-03 | For the non-uniform pile column construction method of underground |
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| CN104727307A CN104727307A (en) | 2015-06-24 |
| CN104727307B true CN104727307B (en) | 2016-04-13 |
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| CN108589769B (en) * | 2018-05-07 | 2020-07-03 | 安徽省公路桥梁工程有限公司 | Construction method of super-long rock-socketed T-shaped combined column plate high retaining wall |
| CN112575676B (en) * | 2019-09-30 | 2022-11-11 | 比亚迪股份有限公司 | Track support assembly and construction method thereof |
| CN112575771B (en) * | 2020-06-15 | 2023-08-04 | 顾炎文 | Environment-friendly construction method for vertical support system of reverse-acting underground engineering steel concrete with piles and columns |
| CN113863286A (en) * | 2021-10-14 | 2021-12-31 | 中铁大桥局第七工程有限公司 | Installation device of variable cross-section major diameter overlength steel reinforcement cage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000144904A (en) * | 1998-11-09 | 2000-05-26 | Fujita Corp | Joint construction between pile and upper structural skeleton in structure |
| EP1634999B1 (en) * | 2003-06-02 | 2007-06-13 | Yurkevich Engineering Bureau LTD | Reinforced concrete column in a ground excavation and method for building said column |
| CN102094419A (en) * | 2011-03-09 | 2011-06-15 | 中铁六局集团有限公司 | Method for forming drilled pile in foundation with silty sand layer |
| CN102767178B (en) * | 2012-07-18 | 2015-01-28 | 上海建工二建集团有限公司 | Stand column pile and construction method thereof |
| CN103205964B (en) * | 2013-04-01 | 2015-06-10 | 中冶交通工程技术有限公司 | Cast-in-place pile construction method using steel pipe column splicing piles |
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Address after: 230041 Anhui Hefei City Yingshang Road West, Yi Jing Road South Office Building 16 colorful layer, 17 layer, 18 layer Patentee after: Hefei municipal engineering design and Research Institute Co. Ltd. Address before: 230041 Anqing Road, Anhui, China, No. 85, No. Patentee before: HEFEI MUNICIPAL DESIGN INSTITUTE CO., LTD. |