CN113982017A - Method for installing reinforcement cage in pile hole - Google Patents
Method for installing reinforcement cage in pile hole Download PDFInfo
- Publication number
- CN113982017A CN113982017A CN202111221803.6A CN202111221803A CN113982017A CN 113982017 A CN113982017 A CN 113982017A CN 202111221803 A CN202111221803 A CN 202111221803A CN 113982017 A CN113982017 A CN 113982017A
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- reinforcement cage
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- pile hole
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- 230000002787 reinforcement Effects 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 238000010276 construction Methods 0.000 claims abstract description 37
- 238000012545 processing Methods 0.000 claims abstract description 25
- 238000009434 installation Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 11
- 230000003014 reinforcing effect Effects 0.000 description 9
- 210000003205 muscle Anatomy 0.000 description 8
- 238000003754 machining Methods 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- 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
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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 application provides a method for installing a reinforcement cage in a pile hole, which comprises the following steps: (1) building a hole processing platform, fixing at least three skeleton main reinforcements according to the center of a pile radiated to the bottom of a hole, and building spiral steel bars according to the designed intervals by taking the main reinforcements as skeletons; (2) after the first section of spiral steel bars are installed, binding the rest main bars and the construction steel bars; (3) heightening the processing platform, lengthening the main framework rib, binding spiral steel bars on the lengthened main framework rib, lengthening the rest main ribs and binding constructional steel bars; (4) and (4) repeating the step (3) until the construction of the whole reinforcement cage is completed. Through building simple and easy processing platform so that build the steel reinforcement cage from stake hole bottom successive layer, the steel reinforcement cage linearity is easy to control to need not to use large-scale equipment of lifting by crane, reduce construction cost.
Description
Technical Field
The application relates to the technical field of bridge pile foundation construction, in particular to a method for installing a reinforcement cage in a pile hole.
Background
At present, the main process of bridge pile foundation construction is as follows: pile foundation pore-forming, hole cleaning → hoisting reinforcement cage → pouring pile body concrete. No matter the pore-forming of bridge pile foundation is manual hole digging or mechanical pore-forming, there is certain reaming coefficient all, and how to ensure accuracy, the straightness that hangs down of steel reinforcement cage center axis position at the hoist and mount in-process of pile foundation steel reinforcement cage to and the protective layer thickness of control pile body owner muscle outside all is the difficult problem of construction always. At present, basically all control the hoist and mount through the supplementary cage body position of transferring the in-process with experience judgement with the help of the manpower, the cage body transfers to coordinate the manpower again after targetting in place and adjust the cage body position with the way that machinery dragged, but the straightness that hangs down that the cage body transferred can't be controlled to the mode that adopts hoist and mount steel reinforcement cage construction, and the planar position degree of accuracy after the steel reinforcement cage is transferred is poor, and need the manual fit among the steel reinforcement cage hoist and mount operation process, there is construction safety risk, and whole efficiency of construction is lower.
Disclosure of Invention
The application aims to provide a method for installing the reinforcement cage in the pile hole, which is used for improving the verticality and the plane position accuracy of the reinforcement cage by adopting on-site assembly of the reinforcement cage.
In order to achieve the above object, the present application provides the following technical solutions:
a method for installing a reinforcement cage in a pile hole comprises the following steps:
(1) building a hole processing platform, fixing at least three skeleton main reinforcements according to the center of a pile radiated to the bottom of a hole, and building spiral steel bars according to the designed intervals by taking the main reinforcements as skeletons;
(2) after the first section of spiral steel bars are installed, binding the rest main bars and the construction steel bars;
(3) heightening the processing platform, lengthening the main framework rib, binding spiral steel bars on the lengthened main framework rib, lengthening the rest main ribs and binding constructional steel bars;
(4) and (4) repeating the step (3) until the construction of the whole reinforcement cage is completed.
Further setting: the processing platform is built upwards from pile hole bottom successive layer, and every layer the processing platform includes three piece at least bracing pieces and lays in the backup pad at bracing piece top.
Further setting: the end part of the supporting rod is rolled with a threaded joint, and the two adjacent layers of processing platforms are connected with the supporting rod through threaded sleeves to form a whole.
Further setting: the main ribs of the framework are uniformly distributed on the boundary of the cross section of the pile hole.
Further setting: when the number of the main ribs of the framework is four, the connecting lines of the four main ribs of the framework are orthogonal in pairs, and the intersection points are coincided with the center of the pile.
Further setting: the inner wall of the pile hole is poured with the pile center as the retaining wall center, the retaining wall is divided into a plurality of sections along the height direction, and reinforcing steel bars are arranged in each section of the retaining wall and are used for being connected with the adjacent retaining wall sections to form a whole.
Further setting: the method is suitable for square pile holes or round pile holes.
Further setting: the acoustic pipe is symmetrically arranged according to design in the construction process of a steel reinforcement worker, the installation position of the acoustic pipe is not overlapped with the position of the main rib of the framework, and clear water is injected into the acoustic pipe after the whole machining of the steel reinforcement cage is finished.
Further setting: the main ribs of the framework and the main ribs are lengthened by adopting straight thread sleeves.
Further setting: the allowable interval deviation between the framework main rib and the adjacent main rib or between the two adjacent main ribs is +/-10 mm, and the allowable interval deviation between the two adjacent threaded reinforcing steel bars is +/-20 mm;
the allowable deviation of the inclination of the framework of the installed reinforcement cage is +/-0.5%, the allowable deviation of the position of the central plane of the framework is +/-20 mm, the allowable deviation of the elevation of the top end of the framework is +/-20 mm, and the allowable deviation of the elevation of the bottom surface of the framework is +/-50 mm.
Compared with the prior art, the scheme of the application has the following advantages:
the installation method of the steel reinforcement cage in the pile hole is suitable for pile foundation construction of a large size, a special construction site is not required to be set, the steel reinforcement cage in the pile hole is built through the construction platform built in the pile hole, the problem that the steel reinforcement cage is hung and placed by adopting the steel reinforcement cage due to the fact that no bearing platform structure is used in the existing pile hole construction, the simple machining platform is built from the bottom of the pile hole layer by layer so as to build the steel reinforcement cage, the steel reinforcement cage is easy to control linearly, large-scale hoisting equipment is not required, and construction cost is reduced.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a process flow diagram of a method of reinforcing a steel cage in a pile hole according to the present application;
FIG. 2 is a schematic structural diagram of a construction method of a reinforcement cage in a pile hole according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a construction method of a reinforcement cage in a pile hole according to an embodiment of the present invention;
in the figure, 1, a skeleton main rib; 2. spiral reinforcing steel bars; 3. a main rib; 4. a processing platform; 5. and (5) protecting the wall.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
Referring to fig. 1 to 3, to the problem that no bearing platform structure leads to the on-the-spot steel reinforcement cage support of setting up of current downthehole construction of stake difficult, this application provides an installation method of downthehole steel reinforcement cage of stake, and it is applicable to square stake hole or circular stake hole, through setting up simple and easy processing platform 4 so that set up the steel reinforcement cage from stake hole bottom successive layer, the steel reinforcement cage linearity is easily controlled to need not to use large-scale equipment of lifting by crane, reduce construction cost.
The method for reinforcing the steel reinforcement cage in the pile hole specifically comprises the following steps:
(1) determining the pile bottom position of the pile position center, erecting an in-hole processing platform 4, fixing at least three framework main reinforcements 1 according to the pile center radiated to the hole bottom, and erecting spiral reinforcements 2 by taking the framework main reinforcements 1 as a framework according to the designed interval.
This application utilizes the drop hammer to radiate the pile position center to the pile bottom earlier when the reinforcing bar cage in the ligature stake, then builds processing platform 4 at the pile bottom, and the staff of being convenient for passes through processing platform 4 carries out the ligature of reinforcing bar cage, has solved the inside problem that does not have the cushion cap structure to lead to the scene to set up reinforcing bar cage support difficulty of stake hole. Constructor is in processing platform 4 is gone up according to the fixed three piece at least skeleton owner muscle 1 of pile central line of radiation to the hole bottom, just skeleton owner muscle 1 sets up and lays evenly on the boundary of stake hole cross section with stake centrosymmetry, sets up spiral reinforcement 2 according to the design interval with the skeleton stirrup as the skeleton again.
Preferably, the four main frame reinforcements 1 are arranged in the embodiment, and the connection lines of the main frame reinforcements 1 are orthogonal two by two and the intersection points are coincided with the center of the pile, so that the stress of each main frame reinforcement 1 is balanced, and the stability of the steel reinforcement cage structure is ensured.
(2) And after the first section of spiral steel bar 2 is installed, binding the rest main steel bar 3 and the construction steel bar.
The reinforcing cage of this application is in order to divide the multisection with single skeleton owner muscle 1 along its lengthwise direction, and constructor is accomplishing the back with skeleton stirrup and 2 ligatures of spiral reinforcement, carries out the ligature of remaining owner muscle 3 and the constructional reinforcement of this section reinforcing cage again.
(3) Connect high processing platform 4 and extension skeleton owner muscle 1 is in the extension the ligature spiral reinforcement 2 on the skeleton owner muscle 1, the surplus owner muscle 3 of extension and ligature structure reinforcing bar.
(4) And (4) repeating the step (3) until the construction of the whole reinforcement cage is completed.
In the course of working of this application steel reinforcement cage, still need arrange the sounding pipe according to the design requirement symmetrically. In this embodiment, it is required to pre-embed 6 piles along the inner side of the reinforcement cage in each pile foundation
The detection steel pipe arch ultrasonic testing usefulness specifically lies in 3 of the equidistant setting in long limit of pile foundation, sets up 2 on the short corner. The sounding pipe is bound on the steel reinforcement cage, the bottom of the steel pipe needs to be sealed, the steel pipe needs to be guaranteed to be tight in seam and free of slurry leakage when being welded, and the sounding pipe does not shift during concrete construction, so that a sounding probe cannot pass through the sounding pipe. The pipe top of the sounding pipe is higher than the pile top by at least 30cm and is tightly plugged at the pipe top by a wooden plug. In order to avoid influencing the pouring quality of concrete, the installation position of the sounding pipe is not overlapped with the position of the framework main rib 1. And after the whole reinforcement cage is machined, clear water is required to be injected into the acoustic testing pipe immediately.
The tolerance interval deviation between the framework main reinforcement 1 and the adjacent main reinforcement 3 of the reinforcement cage or between two adjacent main reinforcements 3 is +/-10 mm, and the tolerance interval deviation between two adjacent twisted reinforcements is +/-20 mm; the allowable deviation of the inclination of the framework of the steel reinforcement cage is +/-0.5%, the allowable deviation of the position of the central plane of the framework is +/-20 mm, the allowable deviation of the elevation of the top end of the framework is +/-20 mm, and the allowable deviation of the elevation of the bottom surface of the framework is +/-50 mm.
It should also be noted that, in the process of lengthening and placing the reinforcement cage, the reinforcement cage must be placed vertically and centrally, and the protective layer of the reinforcement cage is ensured to meet the design requirements. The steel bar raw material, the welded joint and the straight thread joint need to be subjected to sampling inspection according to the frequency required by the specification, and the steel bar raw material, the welded joint and the straight thread joint can be used only after the sampling inspection is qualified; the sections of the top opening and the bottom opening of the reinforcement cage are parallel and level, and the main reinforcement 3 is straight; rust and mud on the surface of the steel reinforcement cage are required to be clear before installation; the coating of all welding spots must be knocked out; the threaded ends are polished flat and marked with red paint at the 1/2 sleeve of the end to ensure even and full butt joint of straight threads.
In addition, before the construction of the reinforcement cage, in order to prevent the collapse of the wall of the pile hole, the retaining wall 5 is constructed in the excavated pile hole, and two processes of excavating the pile hole and constructing the retaining wall 5 need to be continuously constructed so as to ensure that the wall of the pile hole is not collapsed. In this application, the dado 5 is pour as dado 5 center in the center of the inner wall in stake hole department construction stake hole, the multisection is divided along the direction of height to dado 5, and every section thereby it has the reinforcing bar in order to be used for connecting rather than adjacent dado festival to form wholly all to have in the dado festival.
Specifically, in the process of constructing the retaining wall 5, after the first retaining wall section is poured, the central axis control point of the pile hole is led back to the retaining wall 5, and after recheck is carried out without errors, the central axis control point is used as a reference point for determining the center of the lower retaining wall section, and meanwhile, a level gauge is used for determining the relative level elevation on the first retaining wall section. After each retaining wall joint is constructed, the cross axis and the elevation of the pile position are measured and arranged at the upper end opening of the retaining wall 5, the cross line is used for centering, the suspension wire is dropped to the bottom of the hole, the vertical flatness of the hole wall is checked by using a radius ruler rod, and then the trimming is carried out. In the excavation process, the reference points are used as the basis, and the guiding and measuring are carried out one by one, so that the axial position, the elevation and the section size of the pile hole can meet the design requirements. Then, one section of the retaining wall 5 is constructed every time one section of the pile hole is dug, and meanwhile, the drainage construction in the pile hole needs to be paid attention.
The installation method of the steel reinforcement cage in the pile hole is suitable for pile foundation construction with large size, a special construction site is not needed to be set, the steel reinforcement cage in the pile hole is built through the construction platform which is set up in the pile hole, the problems that the steel reinforcement cage is difficult to set up on site due to the fact that the existing pile hole is not provided with a bearing platform structure and the steel reinforcement cage is hung to cause verticality of the steel reinforcement cage and the accuracy of the plane position is poor are solved, the simple processing platform 4 is set up from the bottom of the pile hole layer by layer so as to build the steel reinforcement cage, the linearity of the steel reinforcement cage is easy to control, and large-scale hoisting equipment is not needed, and the construction cost is reduced.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (10)
1. A method for installing a reinforcement cage in a pile hole is characterized by comprising the following steps:
(1) building a hole processing platform, fixing at least three skeleton main reinforcements according to the center of a pile radiated to the bottom of a hole, and building spiral steel bars according to the designed intervals by taking the main reinforcements as skeletons;
(2) after the first section of spiral steel bars are installed, binding the rest main bars and the construction steel bars;
(3) heightening the processing platform, lengthening the main framework rib, binding spiral steel bars on the lengthened main framework rib, lengthening the rest main ribs and binding constructional steel bars;
(4) and (4) repeating the step (3) until the construction of the whole reinforcement cage is completed.
2. The method for installing the reinforcement cage in the pile hole according to claim 1, wherein the processing platform is built up layer by layer from the bottom of the pile hole, and each layer of the processing platform comprises at least three support rods and support plates laid on the tops of the support rods.
3. The method for installing the reinforcement cage in the pile hole according to claim 2, wherein a threaded joint is rolled at the end of the support rod, and the two adjacent layers of processing platforms are connected with the support rod through a threaded sleeve to form a whole.
4. The method of installing a reinforcement cage in a pile hole according to claim 1, wherein the skeletal main reinforcement is uniformly distributed over the boundaries of the cross section of the pile hole.
5. The method for installing the reinforcement cage in the pile hole according to claim 4, wherein when four skeleton main reinforcements are provided, the connecting lines of the four skeleton main reinforcements are orthogonal in pairs, and the intersection points of the connecting lines are coincident with the center of the pile.
6. The method of installing a reinforcement cage in a pile hole according to claim 1, wherein a retaining wall is cast by using a pile center of an inner wall of the pile hole as a retaining wall center, the retaining wall is divided into a plurality of sections in a height direction, and each section of the retaining wall is provided with a reinforcement for connecting with an adjacent retaining wall section to form a whole.
7. The method for installing a reinforcement cage in a pile hole according to claim 1, wherein the method is suitable for square pile holes or round pile holes.
8. The method for installing the reinforcement cage in the pile hole according to claim 1, wherein the acoustic pipes are symmetrically arranged according to design in the construction process of a steel reinforcement worker, the installation positions of the acoustic pipes are not overlapped with the positions of the main ribs of the framework, and clear water is injected into the acoustic pipes after the whole reinforcement cage is machined.
9. The method of installing a reinforcement cage in a pile hole of claim 1, wherein the cage bars and the cage bars are lengthened by straight threaded sleeves.
10. The method for installing a reinforcement cage in a pile hole according to claim 1, wherein the allowable interval deviation between the framework main reinforcement and the adjacent main reinforcement or between two adjacent main reinforcements is ± 10mm, and the allowable interval deviation between two adjacent twisted reinforcements is ± 20 mm;
the allowable deviation of the inclination of the framework of the installed reinforcement cage is +/-0.5%, the allowable deviation of the position of the central plane of the framework is +/-20 mm, the allowable deviation of the elevation of the top end of the framework is +/-20 mm, and the allowable deviation of the elevation of the bottom surface of the framework is +/-50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111221803.6A CN113982017A (en) | 2021-10-20 | 2021-10-20 | Method for installing reinforcement cage in pile hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111221803.6A CN113982017A (en) | 2021-10-20 | 2021-10-20 | Method for installing reinforcement cage in pile hole |
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| Publication Number | Publication Date |
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| CN113982017A true CN113982017A (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111221803.6A Pending CN113982017A (en) | 2021-10-20 | 2021-10-20 | Method for installing reinforcement cage in pile hole |
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| CN (1) | CN113982017A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482024A (en) * | 2022-03-20 | 2022-05-13 | 陈政杰 | Binding method for reinforcement cage in hollow hole in middle of defected cast-in-place pile |
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|---|---|---|---|---|
| JP2002356845A (en) * | 2001-06-01 | 2002-12-13 | Takahashi Seisakusho:Kk | Method for assembling cage for use in cast-in-place concrete pile, in weldless manner |
| CN104141298A (en) * | 2013-12-24 | 2014-11-12 | 中国建筑第四工程局有限公司 | Manufacturing and mounting method and auxiliary mounting device for reinforcement cage in pile hole |
| CN110106867A (en) * | 2019-05-10 | 2019-08-09 | 中铁六局集团有限公司 | Manual digging pile construction method between railcar station track |
| CN112281873A (en) * | 2020-10-19 | 2021-01-29 | 中铁六局集团有限公司 | Construction method of anchoring pile |
-
2021
- 2021-10-20 CN CN202111221803.6A patent/CN113982017A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002356845A (en) * | 2001-06-01 | 2002-12-13 | Takahashi Seisakusho:Kk | Method for assembling cage for use in cast-in-place concrete pile, in weldless manner |
| CN104141298A (en) * | 2013-12-24 | 2014-11-12 | 中国建筑第四工程局有限公司 | Manufacturing and mounting method and auxiliary mounting device for reinforcement cage in pile hole |
| CN110106867A (en) * | 2019-05-10 | 2019-08-09 | 中铁六局集团有限公司 | Manual digging pile construction method between railcar station track |
| CN112281873A (en) * | 2020-10-19 | 2021-01-29 | 中铁六局集团有限公司 | Construction method of anchoring pile |
Non-Patent Citations (2)
| Title |
|---|
| 王景宇等: "抗滑桩处置坡地地貌滑坡地质灾害问题探究", 《科技创新与应用》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482024A (en) * | 2022-03-20 | 2022-05-13 | 陈政杰 | Binding method for reinforcement cage in hollow hole in middle of defected cast-in-place pile |
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Application publication date: 20220128 |