CN218175932U - Top locking and anchoring device of pressure type anti-floating pile - Google Patents
Top locking and anchoring device of pressure type anti-floating pile Download PDFInfo
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- CN218175932U CN218175932U CN202123287930.4U CN202123287930U CN218175932U CN 218175932 U CN218175932 U CN 218175932U CN 202123287930 U CN202123287930 U CN 202123287930U CN 218175932 U CN218175932 U CN 218175932U
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Abstract
The application relates to a top locking anchor device of a pressure type anti-floating pile. The device sets up locking short steel pipe at anti-floating pile top center, and the steel strand wires that do not bond are arranged in this steel pipe and are passed the steel pipe and stretch into inside the basis, and the steel pipe top is inside the basis, and the setting is in anti-floating pile at the bottom of the steel pipe, and the inside concrete that fills in of steel pipe. Temporarily tensioning and locking the unbonded steel strand at the top of the locking short steel pipe through an anchor plate and an anchorage device before foundation pouring; and after the foundation is poured, permanently anchoring the steel strand in the foundation through the arranged anchor plate and the anchorage device. Conventional pressure-bearing type stake anchor is usually with steel strand wires locking in foundation plate top, and the process is complicated, and the waterproof construction degree of difficulty is big, the effect is poor, often causes the bottom plate seepage, and this application can follow the steel strand wires construction waterproof all around through setting up locking short steel pipe with steel strand wires locking anchor inside the basis, and waterproof construction is simple and convenient, the quality is reliable, effectual, has solved locking and waterproof problem effectively, has reduced the risk of prestressing loss simultaneously by a wide margin.
Description
Technical Field
The application relates to a locking device for anti-floating piles and anti-floating anchor rods of buildings, municipal works, underground works and high-rise structures in construction engineering, in particular to a top locking anchoring device for a pressure type anti-floating pile.
Background
At present, the main treatment methods for solving the anti-floating problem of the underground structure comprise an anti-floating plate method, a ballast method, a drainage pressure limiting method, a water-resisting pressure control method, a water drainage pressure reduction method, an anti-floating anchor rod method, an anti-floating pile method and the like. In practical engineering, the anti-floating pile method or anti-floating anchor rod method is the most common method for solving the problem of foundation anti-floating. And after the specification of the technical standard for resisting floating of constructional engineering (JGJ 476-2019) is implemented from 3, 1 and 2020, the design requirements of anti-floating piles or anti-floating anchor rods in various provinces in China tend to be stricter, and partial provinces require that a pressure type anti-floating design scheme is adopted. To pressure type anti-floating pile or anti-floating anchor rod, the main muscle generally adopts the unbonded steel strand wires to with the stretch-draw locking of unbonded steel strand wires at the soleplate top, it is big to cause the waterproof construction degree of difficulty of basis like this, and water-proof effects is poor, often causes soleplate to produce the seepage problem, often takes place prestressing force loss problem along with time lapse simultaneously.
Through the analysis of above problem, need to research and develop a novel locking device that has advantages such as waterproof construction is convenient, the quality is reliable, water-proof effects is good, add locking force stability in advance to pressure type anti-floating pile urgent.
SUMMERY OF THE UTILITY MODEL
The application provides a top locking anchor of pressure type anti-floating pile can overcome the big, the water-proof effects of the foundation waterproofing degree of difficulty is poor under the current locking mode, easily produces the seepage, the easy loss scheduling problem of prestressing force.
In order to achieve the purpose, the following technical scheme is adopted in the application:
preferably, the top locking and anchoring device of the pressure type anti-floating pile is characterized in that a locking short steel pipe is arranged in the center of the top of the pressure type anti-floating pile body in advance, and an unbonded steel strand at the top of the pressure type anti-floating pile body is arranged in the locking short steel pipe and penetrates through the locking short steel pipe to extend into the foundation. The top end of the locking short steel pipe is arranged inside the foundation, and the bottom end of the locking short steel pipe is arranged in the anti-floating pile. And filling concrete into the locked short steel pipe and vibrating the short steel pipe to be dense.
Preferably, the pressure type anti-floating pile locking and anchoring process is divided into two stages: the first stage is as follows: after the pile body concrete strength of the pressure type anti-floating pile meets the design requirement and before foundation pouring, temporarily tensioning and locking the unbonded steel stranded wires at the top of the locking short steel pipe through an anchor plate and an anchorage device; and a second stage: after the pouring of the foundation concrete is completed, the concrete is filled below the anchor plate arranged in the first stage, and the unbonded steel stranded wires at the top of the pile body of the pressure type anti-floating pile are naturally and permanently anchored in the foundation through the arranged anchor plate and the anchorage device.
Preferably, the upper part of the locking short steel pipe is arranged outside the pile top of the anti-floating pile and inside the foundation, and the lower part of the locking short steel pipe is arranged in the pile body of the anti-floating pile before the concrete of the pile body is solidified. The height of the top mark of the locking short steel pipe is not less than the height of H when being lower than the height of the top mark of the foundation, H = the thickness of the anchor plate, the height of the anchorage device and the height of the reserved steel strand at the anchor head, so that the whole locking anchoring device can be completely placed in the foundation concrete after the foundation concrete is poured. The depth h of the bottom end of the locking short steel pipe penetrating into the pressure type anti-floating pile body is not less than 20cm. The locking anchoring device is an anchor plate and an anchor.
Preferably, the locking short steel pipe is arranged centrally inside the pressure type anti-floating pile body. And filling the locked short steel pipe with concrete and vibrating the short steel pipe to be compact. The diameter and the thickness of the locking short steel tube are determined according to the locking force of the pressure type anti-floating pile, the pile body and the strength of concrete in the locking short steel tube.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the installation and construction of all locking anchoring components of this application all accomplish before basic concrete placement, need not to reserve the stretch-draw pore, need not to carry out stretch-draw locking again after basic construction finishes, and need not to handle the protection to the anchor head ground tackle again, has reduced construction process by a wide margin, has improved basic construction efficiency greatly.
2. All locking anchor components of this application all bury in basic concrete after basic concrete placement finishes, do not have the damage problem and reduced prestressing force loss's risk by a wide margin.
3. This application is through setting up the short steel pipe of locking at pressure type anti floating pile top, and the position that foundation waterproofing need be handled only has simplified waterproof construction technology greatly for the concrete pile head and the short steel pipe outside of locking, has reduced the waterproof construction degree of difficulty, convenient high efficiency.
4. This application will not have bonding steel strand wires locking inside the basis, and no locking reservation pore, and only need carry out water repellent in the pile head and the steel pipe outside, and waterproof quality is very reliable, and water-proof effects is good.
Drawings
FIG. 1 is a schematic view of a locking short steel tube arrangement;
FIG. 2 is a schematic illustration of a first stage locking anchor;
fig. 3 is a schematic view of a second stage locking anchor.
Description of the reference numerals: 1. a pressure type anti-floating pile body; 2. the unbonded steel strand is used for the production of the steel strand; 3. locking the short steel pipe; 4. an anchor plate; 5. an anchorage device; 6. and (4) a foundation.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a top locking and anchoring structure of a pressure type anti-floating pile.
Referring to fig. 1 to 3, the included members are: the pressure type anti-floating pile comprises a pile body 1 of the pressure type anti-floating pile, unbonded steel strands 2, locking short steel pipes 3, anchor plates 4, an anchorage device 5 and a foundation 6.
Referring to fig. 1, the upper part of the locking short steel pipe 3 is arranged outside the anti-floating pile head and inside the foundation 6, and the lower part of the locking short steel pipe 3 is arranged inside the pressure type anti-floating pile body 1 before the concrete of the pile body is solidified, and is arranged in the middle. The locking short steel pipe 3 is filled with concrete and is vibrated to be compact. The diameter and the thickness of the locking short steel tube 3 are determined according to the locking force of the pressure type anti-floating pile, the pile body 1 of the pressure type anti-floating pile and the strength of concrete in the locking short steel tube 3.
Referring to fig. 2, after the concrete strength of the pressure type anti-floating pile body 1 meets the design requirement and before the foundation 6 is poured, the unbonded steel stranded wires 2 are temporarily tensioned and locked at the top of the locking short steel pipe 3 through the anchor plate 4 and the anchorage device 5. The height of the top of the locking short steel pipe 3 is not less than the height of H and is lower than the height of the top of the foundation 6. H = anchor slab 4 thickness + 5 height of ground tackle + anchor head reserve the height of unbonded steel strand wires 2, can ensure like this that 6 concrete placement in the basis after, whole locking anchor is arranged in 6 concrete of basis completely, and locking anchor is anchor slab 4 and ground tackle 5 promptly. The bottom end of the locking short steel pipe 3 is deeply inserted into the pressure type anti-floating pile body 1 by a depth h not less than 20cm.
Referring to fig. 3, after the concrete pouring of the foundation 6 is completed, the lower part of the anchor plate 4 arranged in the first stage is filled with concrete, and the unbonded steel strand 2 at the top of the pile body 1 of the pressure type anti-floating pile is naturally and permanently anchored inside the foundation 6 through the arranged anchor plate 4 and the anchorage device 5.
The fixing device for the top locking anchoring structure of the pressure type anti-floating pile comprises the following construction steps:
the method comprises the following steps: forming a pressure type anti-floating pile body 1, and placing an unbonded steel strand 2 in the pile body;
step two: before the concrete of the pressure type anti-floating pile body 1 is solidified, vertically centering and inserting the locking short steel pipe 3 into the concrete of the pressure type anti-floating pile body 1 according to a designed elevation, and vertically centering and penetrating the unbonded steel strand 2 through the locking short steel pipe 3;
step three: filling concrete in the locked short steel tube 3 and vibrating to be compact;
step four: after the concrete strength of a pile body 1 of the pressure type anti-floating pile meets the design requirement and before the concrete of a foundation 6 is poured, temporarily tensioning and locking the unbonded steel stranded wires 2 at the top of the locking short steel pipe 3 through an anchor plate 4 and an anchorage device 5;
step five: after the concrete pouring of the foundation 6 is completed, the lower part of the arranged anchor plate 4 is filled with concrete, and the unbonded steel stranded wire 2 at the top of the pile body 1 of the pressure type anti-floating pile is naturally and permanently anchored in the foundation 6 through the arranged anchor plate 4 and the anchorage device 5.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (3)
1. The utility model provides a top locking anchor of pressure type anti-floating pile which characterized in that: a locking short steel pipe (3) is arranged in advance in the center of the top of a pressure type anti-floating pile body (1), and during arrangement, an unbonded steel strand (2) at the top of the pressure type anti-floating pile body (1) is arranged in the locking short steel pipe (3) and penetrates through the locking short steel pipe (3) to extend into a foundation (6); after the concrete strength of the pressure type anti-floating pile body (1) meets the design requirement and before the foundation (6) is poured, an anchor plate (4) and an anchorage device (5) for temporarily tensioning and locking the unbonded steel strand (2) at the top of the locking short steel pipe (3) are arranged on the locking short steel pipe (3); the top end of the locking short steel pipe (3), the anchor plate (4) and the anchor (5) are arranged in the foundation (6), and the bottom end of the locking short steel pipe (3) is arranged in the anti-floating pile; the locking short steel pipe (3) is filled with concrete and is vibrated to be compact.
2. A top-lock anchor of a pressure type buoyant pile according to claim 1 wherein: the upper part of the locking short steel pipe (3) is arranged outside the pile top of the anti-floating pile and inside the foundation (6), and the lower part of the locking short steel pipe (3) is arranged in the pressure type anti-floating pile body (1) before the concrete of the pile body is solidified; the height of the top mark of the locking short steel pipe (3) is not less than the height H of the top mark of the foundation (6), H = the thickness of the anchor plate (4), the height of the anchorage device (5) and the height of the reserved steel strand of the anchor head, so that the whole locking anchoring device is completely placed in the concrete of the foundation (6) after the concrete of the foundation (6) is poured; the bottom end of the locking short steel pipe (3) penetrates into the pressure type anti-floating pile body (1) to a depth h of not less than 20cm.
3. A top-lock anchor of a pressure type floating resistive pile according to claim 1, wherein: the locking short steel pipe (3) is arranged in the middle inside the pressure type anti-floating pile body (1); the locking short steel pipe (3) is filled with concrete and is vibrated to be compact; the diameter and the thickness of the locking short steel tube (3) are determined according to the locking force of the pressure type anti-floating pile, the pile body (1) of the pressure type anti-floating pile and the strength of concrete in the locking short steel tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123287930.4U CN218175932U (en) | 2021-12-24 | 2021-12-24 | Top locking and anchoring device of pressure type anti-floating pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123287930.4U CN218175932U (en) | 2021-12-24 | 2021-12-24 | Top locking and anchoring device of pressure type anti-floating pile |
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| Publication Number | Publication Date |
|---|---|
| CN218175932U true CN218175932U (en) | 2022-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123287930.4U Active CN218175932U (en) | 2021-12-24 | 2021-12-24 | Top locking and anchoring device of pressure type anti-floating pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218175932U (en) |
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2021
- 2021-12-24 CN CN202123287930.4U patent/CN218175932U/en active Active
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