CN112663612B - Low-cost pile pulling construction method for collapsible area - Google Patents
Low-cost pile pulling construction method for collapsible area Download PDFInfo
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- CN112663612B CN112663612B CN202011481763.4A CN202011481763A CN112663612B CN 112663612 B CN112663612 B CN 112663612B CN 202011481763 A CN202011481763 A CN 202011481763A CN 112663612 B CN112663612 B CN 112663612B
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Abstract
The invention discloses a low-cost pile pulling construction method in a collapsible area, which comprises the following steps of earthwork excavation: digging a rectangular tunnel around the pile to be pulled out, and further enabling the top of the pile to leak by half a meter; setting an enclosing barrier: four groups of enclosing plates are arranged on the side edge of the dug rectangular tunnel in a surrounding manner, the two groups of enclosing plates and the tunnel ground are supported through a support frame, and the two groups of enclosing plates are supported and fixed through support rods; laying a bearing platform: and paving gravels and a supporting plate layer on one side of the outer edge of the tunnel to form a bearing platform for a lifting system to bear. The low-cost collapsible area pile pulling construction method is reasonable in design, the whole bearing capacity of the pile pulling part can be improved, the pile pulling machine can operate fully, meanwhile, the soil which is collapsible and flows in the pile pulling process can be effectively prevented from flowing to the pile foundation, and the pile pulling construction method is suitable for popularization and use.
Description
Technical Field
The invention belongs to the technical field of pile pulling in buildings, and particularly relates to a low-cost pile pulling construction method in a collapsible area.
Background
In the building construction process, the arrangement of pile foundation is indispensable, and in the actual construction process, the arrangement of pile foundation probably will adjust on a large scale, need pull out the position that the stake can occupy new pile, because the length or the diameter that need pull out stake and new pile have great difference, so need the new stake of construction to pull out needs pull out the stake. If the piles to be pulled out are reserved, new piles are arranged around the piles to be pulled out, the problem of overall foundation rigidity is considered, and if local piles are arranged too much, the local piles are caused to subside too little to cause uneven settlement of the foundation.
The soil bearing capacity at pile pulling position is limited when the collapsible area carries out pile pulling, easily causes the unstable not full power of machine at pile pulling in-process and carries out pile pulling scheduling problem emergence, and the soil around the pile foundation easily moves to pile foundation department under the pressure effect of pile extractor at pile pulling in-process, the follow-up work of being not convenient for.
Disclosure of Invention
The invention aims to provide a low-cost pile pulling construction method in a collapsible area, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a low-cost pile pulling construction method for a collapsible area comprises the following steps:
s1, earth excavation: digging a rectangular tunnel around the pile to be pulled out, and further enabling the top of the pile to leak by half a meter;
s2, setting an enclosing barrier: four groups of enclosing plates are arranged on the side edge of the dug rectangular tunnel in a surrounding manner, the two groups of enclosing plates and the tunnel ground are supported through a support frame, and the two groups of enclosing plates are supported and fixed through support rods;
s3, laying a bearing platform: paving sand and stone and a support plate layer on one side of the outer edge of the tunnel to form a bearing platform for a lifting system to bear;
s4, drilling a pressure relief hole: drilling pressure relief holes around the piles to be pulled out, installing high-pressure inflation tubes and vibration rods in the pressure relief holes, and connecting the high-pressure inflation tubes with an air compressor;
s5, mounting a steel cover: installing a steel cover with the diameter larger than that of the pile around the pile to be pulled out, wherein a through groove for the pile to pass through is formed in the center of the steel cover, and one part of the steel cover is pressed in the soil;
s6, preparing before pile pulling: cutting the pile body, and fixing the top of the pile body on a lifting system when the pile body reaches a specified length;
s7, pile pulling: after the pile body is pulled out for a certain distance, a hole is drilled at the position close to the top, the pile body is penetrated through by a positioning rod after the hole is drilled, the pile body is cut after the penetration, and the top of the pile body is fixed on a lifting system again after the cutting;
and S8, repeating the operation of the step S7 until the whole pile body is pulled out, and collecting the inflation tube, the vibration rod and the like after the pile body is pulled out for the next use.
Preferably, the support frame is provided with a plurality of in S2, and a plurality of support frame is equidistant to be set up on the inboard side of bounding wall, the support frame is triangle-shaped columnar structure, the support frame bottom sprag is in gallery bottom department.
Preferably, the S3 middle sand stone and the supporting plate layer are all provided with a plurality of layers, and the sand stone and the supporting plate layer are alternately arranged from top to bottom.
Preferably, the pressure release hole is provided with a plurality of, and a plurality of pressure release hole uses the stake to set up as central annular array, high-pressure gas tube and vibrting spear all are provided with a plurality of, and high-pressure gas tube and vibrting spear arrange in a plurality of pressure release downthehole in turn.
Preferably, hoist system among S3 includes the crane and presss from both sides tight structure, tight structure is pressed from both sides to the davit front end of crane is installed, press from both sides tight structure and include the mounting bracket and press from both sides tight piece, articulated seat is installed at the mounting bracket top, and installs on the davit through articulated seat is articulated, mounting bracket bottom department has seted up smooth chamber, it is provided with two, two to press from both sides tight piece top department and be fixed with the slider, the slider sets up in smooth chamber, the slider is T style of calligraphy massive structure, the symmetry is provided with two sets of hydraulic stems on the outside limit of mounting bracket, the one end of hydraulic stem stretches into in the smooth chamber, and fixes on a side of slider.
Preferably, two circular arc clamping grooves are formed in one side edge, adjacent to the sliding blocks, of each sliding block, friction blocks are sequentially arranged in the clamping grooves from top to bottom, each friction block is of an arc-shaped block structure, a rubber pad is fixedly bonded to the inner side edge of each friction block, a mounting hole is drilled in the center of each friction block, the friction blocks are fixed to the mounting holes through bolts, a mounting disc is fixed to one end of each hydraulic rod, and the mounting disc is fixed to a mounting frame through bolts.
The invention has the technical effects and advantages that: this low-cost collapsible area pile pulling construction method, through enclosing the fender that forms by the combination of four group's bounding walls, enclose the cooperation between support frame and the bracing piece on the fender, can carry out fine protection to the gallery around the pile foundation, avoid flowing suddenly pile foundation department when pile puller during operation, through the bearing platform that sets up, the whole bearing capacity at collapsible pile pulling position is improved through the crisscross mode that sets up of a plurality of grit and a plurality of support sheet layer to the platform of weighing, can avoid appearing in pile puller in-process pile puller unable full power operation scheduling problem emergence through the support of great plane, through high-pressure gas tube and the vibrations stick that set up, can be in pile puller process carry out the high pressure to the pile foundation suddenly on every side and blow vibrations and handle, and then improve soil vibrations, improve the air content of soil spare, and then reduce friction, the convenience pile foundation is pulled out. The low-cost collapsible area pile pulling construction method is reasonable in design, the whole bearing capacity of the pile pulling part can be improved, the pile pulling machine can operate fully, meanwhile, the soil which is collapsible and flows in the pile pulling process can be effectively prevented from flowing to the pile foundation, and the pile pulling construction method is suitable for popularization and use.
Drawings
Fig. 1 is a schematic view of a clamping structure according to the present invention.
In the figure: the mounting frame 1, the clamping block 2, the friction block 3, the hinged seat 4, the hydraulic rod 5 and the mounting disc 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a low-cost pile pulling construction method in a collapsible area, which comprises the following steps:
s1, earth excavation: digging a rectangular tunnel around the pile to be pulled out, and further enabling the top of the pile to leak by half a meter;
s2, setting an enclosing barrier: four groups of enclosing plates are arranged on the side edge of the dug rectangular tunnel in a surrounding mode, the two groups of enclosing plates and the tunnel ground are supported through supporting frames, and meanwhile the two groups of enclosing plates are supported and fixed through supporting rods (enclosing blocks are used for well protecting the tunnel around the pile foundation, and the phenomenon that the pile foundation suddenly flows to the pile foundation when the pile extractor works is avoided);
s3, laying a bearing platform: paving gravels and a supporting plate layer on one side of the outer edge of the tunnel to form a bearing platform for a lifting system to bear (the bearing platform can improve the integral bearing capacity of a collapsible pile pulling part, the problems that a pile pulling machine cannot operate fully in the pile pulling process and the like can be avoided through the support of a larger plane, a working plate and the gravels are constructed by symmetrical weight adjustment, the bearing problem is solved by pouring concrete, and the pile pulling cost is reduced);
s4, drilling a pressure relief hole: the method comprises the following steps of drilling pressure relief holes around a pile to be pulled out, installing a high-pressure inflation pipe and a vibration rod in the pressure relief holes, and connecting the high-pressure inflation pipe with an air compressor (the air compressor can perform inflation treatment on the high-pressure inflation pipe in the working process so as to inject air into soil, improve the air content of the soil at the pile foundation part and facilitate the pulling out of the pile foundation);
s5, mounting a steel cover: installing a steel cover with the diameter larger than that of the pile around the pile to be pulled out, wherein the steel cover can primarily scrape the soil on the impact surface of the pile, a through groove for the pile to pass through is formed in the center of the steel cover, and one part of the steel cover is pressed in the soil;
s6, preparation before pile pulling: cutting the pile body, and fixing the top of the pile body on a lifting system when the pile body reaches a specified length;
s7, pile pulling: after the pile body is pulled out for a certain distance, a hole is drilled at the position close to the top, the pile body is penetrated through by a positioning rod after the hole is drilled, the pile body is cut after the penetration, and the top of the pile body is fixed on a lifting system again after the cutting;
and S8, repeating the operation of the step S7 until the whole pile body is pulled out, and collecting the inflation tube, the vibration rod and the like after the pile body is pulled out for the next use.
Specifically, in S2 the support frame is provided with a plurality of, and a plurality of support frame is equidistant on the inboard edge of bounding wall and sets up, the support frame is triangle-shaped columnar structure, the support frame bottom sprag is in gallery bottom department.
Specifically, S3 medium sand stone and support sheet layer all are provided with a plurality of layers, sand stone and support sheet layer top-down sets up in turn.
Specifically, the pressure release hole is provided with a plurality of, and a plurality of pressure release hole uses the stake to set up as central annular array, high-pressure gas tube and vibrations stick all are provided with a plurality of, and high-pressure gas tube and vibrations stick arrange in a plurality of pressure release downthehole turn.
Specifically, lift system among S3 includes the crane and presss from both sides tight structure (can lead to crane or excavator automobile body and press from both sides tight structural connection during specific implementation), the tight structure of clamp (shown in fig. 1) is installed to the davit front end of crane, press from both sides tight structure and include mounting bracket 1 and press from both sides tight piece 2, articulated seat 4 is installed at mounting bracket 1 top, and articulates through articulated seat 4 and installs on the davit, smooth chamber has been seted up to mounting bracket 1 bottom department, it is provided with two, two to press from both sides tight piece 2 top department and be fixed with the slider, the slider sets up in smooth chamber, the slider is T style of calligraphy massive structure, the outside edge of mounting bracket 1 is provided with two sets of hydraulic stems 5 to the symmetry, the one end of hydraulic stem 5 stretches into in smooth chamber, and fixes on one side of slider.
Specifically, two circular arc clamping grooves are formed in one side edge, adjacent to the sliding blocks, of each sliding block, the friction blocks 3 are sequentially arranged in the clamping grooves from top to bottom, each friction block 3 is of an arc-shaped block structure, a rubber pad is fixedly bonded to the inner side edge of each friction block, a mounting hole is drilled in the center of each friction block 3, the friction blocks 3 are fixedly arranged at the positions of the mounting holes through bolts, a mounting disc 6 is fixedly arranged at one end of each hydraulic rod 5, and the mounting disc 6 is fixedly arranged on the mounting frame 1 through bolts.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. A low-cost pile pulling construction method in a collapsible area is characterized by comprising the following steps:
s1, earth excavation: digging a rectangular tunnel around the pile to be pulled out, and further enabling the top of the pile to be exposed by half a meter;
s2, setting an enclosing barrier: four groups of enclosing plates are arranged on the side edge of the dug rectangular tunnel in a surrounding manner, the two groups of enclosing plates and the tunnel ground are supported by a support frame, and the two groups of enclosing plates are supported and fixed by a support rod;
s3, laying a bearing platform: paving sand and stone and a support plate layer on one side of the outer edge of the tunnel to form a bearing platform for a lifting system to bear;
s4, drilling a pressure relief hole: drilling pressure relief holes around the piles to be pulled out, installing high-pressure inflation tubes and vibration rods in the pressure relief holes, and connecting the high-pressure inflation tubes with an air compressor;
s5, mounting a steel cover: installing a steel cover with the diameter larger than that of the pile around the pile to be pulled out, wherein a through groove for the pile to pass through is formed in the center of the steel cover, and one part of the steel cover is pressed in the soil;
s6, preparation before pile pulling: cutting the pile body, and fixing the top of the pile body on a lifting system when the pile body reaches a specified length;
s7, pile pulling: after the pile body is pulled out for a certain distance, a hole is drilled at the position close to the top, the pile body is penetrated through by a positioning rod after the hole is drilled, the pile body is cut after the penetration, and the top of the pile body is fixed on a lifting system again after the cutting;
and S8, repeating the operation of the step S7 until the whole pile body is pulled out, and collecting the inflation tube, the vibration rod and the like after the pile body is pulled out for the next use.
2. The low-cost pile pulling construction method for the collapsible area according to claim 1, is characterized in that: s2 the support frame is provided with a plurality of, and a plurality of support frame is equidistant setting on the inboard edge of bounding wall, the support frame is triangle-shaped columnar structure, the support frame bottom sprag is in gallery bottom department.
3. The low-cost pile pulling construction method for the collapsible area according to claim 1, is characterized in that: s3 medium sand stone and support plate layer are all provided with a plurality of layers, sand stone and support plate layer are arranged from top to bottom alternately.
4. The low-cost pile pulling construction method for the collapsible area according to claim 1, is characterized in that: the pressure release hole is provided with a plurality of, and a plurality of pressure release hole uses the stake to set up as central annular array, high-pressure gas tube and vibrations stick all are provided with a plurality of, and high-pressure gas tube and vibrations stick arrange in a plurality of pressure release downthehole turn.
5. The low-cost pile pulling construction method for the collapsible area according to claim 1, is characterized in that: lifting system in S3 includes the crane and presss from both sides tight structure, tight structure is pressed from both sides to the davit front end of crane is installed, press from both sides tight structure and include mounting bracket (1) and press from both sides tight piece (2), articulated seat (4) are installed at mounting bracket (1) top, and articulate through articulated seat (4) and install on the davit, mounting bracket (1) bottom department has seted up smooth chamber, it is provided with two, two to press from both sides tight piece (2) top department and be fixed with the slider, the slider sets up in smooth chamber, the slider is T style of calligraphy massive structure, the symmetry is provided with two sets of hydraulic stem (5) on the outside limit of mounting bracket (1), the one end of hydraulic stem (5) stretches into in smooth chamber, and fixes on a side of slider.
6. The low-cost pile pulling construction method for the collapsible area according to claim 5, wherein the pile pulling construction method comprises the following steps: two seted up on the adjacent side of slider convex press from both sides tight groove, press from both sides tight inslot top-down and set gradually clutch blocks (3), clutch blocks (3) are arc massive structure, and the inboard edge bonding is fixed with the rubber pad, the center department of clutch blocks (3) bores and is equipped with the mounting hole, and mounting hole department is through bolt fastening clutch blocks (3), the one end of hydraulic stem (5) is fixed with mounting disc (6), and mounting disc (6) are through bolt fastening on mounting bracket (1).
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| CN202011481763.4A CN112663612B (en) | 2020-12-15 | 2020-12-15 | Low-cost pile pulling construction method for collapsible area |
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| CN202011481763.4A CN112663612B (en) | 2020-12-15 | 2020-12-15 | Low-cost pile pulling construction method for collapsible area |
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| JP4113305B2 (en) * | 1999-07-15 | 2008-07-09 | 日本基礎技術株式会社 | Ground obstruction removal method |
| ITGE20010026A1 (en) * | 2001-03-20 | 2002-09-20 | Ts Tecnospamec S R L | METHOD FOR CUTTING SUBMERGED STRUCTURES AND APPARATUS SUITABLE FOR CONDUCTING THIS METHOD. |
| JP6230095B2 (en) * | 2013-05-10 | 2017-11-15 | 大成建設株式会社 | Removal method of existing structure |
| CN104652436B (en) * | 2014-12-24 | 2017-06-27 | 福建工程学院 | Steel sleeve high pressure water injection is loosened the soil pile-pulling construction method |
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