Anti-floating anchor and construction method thereof

A technology of anti-floating anchor rods and construction methods, applied in the direction of foundation structure engineering, sheet pile walls, protection devices, etc., can solve problems such as pollution and low construction efficiency, and achieve the effects of advanced technology, reduced cleaning, and shortened construction period

Pending Publication Date: 2019-06-28
ANHUI TONGJI CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the increasing development of underground space, the specifications of anti-floating anchors are gradually developing in the direction of large diameters. The traditional anti-floating anchor construction adopts wet operation method, the construction efficiency is low, and the mud generated during the operation will affect the environment. How to efficiently construct anti-floating bolts has become the focus of attention of those skilled in the art

Method used

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  • Anti-floating anchor and construction method thereof
  • Anti-floating anchor and construction method thereof
  • Anti-floating anchor and construction method thereof

Examples

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Effect test

Embodiment 1

[0066] The first bid section of Huasujiayuan Community Project in Chuzhou City, with a total construction area of ​​48,000 square meters, and a frame shear wall structure;

[0067] Adopt the anti-floating anchor structure provided by the present invention, specifically, the number of anti-floating anchors is 623, and each anti-floating anchor includes concrete pipe piles and pull-out steel tendons inserted in the concrete pipe piles; anti-floating anchors Rod diameter is 200mm, effective anchorage length is 12m;

[0068] The concrete used for the concrete pipe pile formed by pressure filling is C30 fine stone concrete;

[0069] Described pull-out steel tendon adopts three (Grade 3) as the main steel bar for pullout resistance;

[0070] Short bars are used (Level 3), set the spacing on the pullout main reinforcement to 1500mm;

[0071] fine steel bars (Level 3), set the spacing on the pullout main reinforcement to 1.5m;

[0072] The standard value of the pullout force ...

Embodiment 2

[0075] Wuhu Yunding International City 1#-4# building and basement project:

[0076] The construction area is 160,000 m 2 , is a first-class high-rise office building, the 4# building office building is divided into A, B, four-story podium, the ground floor area is 65147.5m 2 , two floors underground, for civil air defense garages and equipment rooms, the roof is the superior roof, and the building height is 99.1 meters. In order to solve the anti-lifting problem of the basement of this project, the anti-floating anchor rod provided by the present invention is used as the foundation.

[0077] The number of anti-floating anchor rods actually constructed is 1361, and the diameter of the final hole is 200mm. Pressure grouting adopts commercial fine stone concrete with strength grade C30.

[0078] Described pull-out steel tendon adopts three (Grade 3) as the main steel bar for pullout resistance;

[0079] Short bars are used (Level 3), set the spacing on the pullout main r...

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Abstract

The invention belongs to the technical field of building construction structures, in particular to an anti-floating anchor and a construction method thereof. The anti-floating anchor comprises a concrete tubular pile and an anti-pull bar bundle inserted into the concrete tubular pile. The anti-pull bar bundle comprises a plurality of anti-pull main bars and short bars arranged in the length direction of the anti-pull main bars at intervals, and the bar bodies of the short bars and the bar bodies of the anti-pull main bars are welded and fixed. An end plate is arranged at the bottom of the anti-pull bar bundle, and an end tip is arranged on the plate face of the side, away from the anti-pull bar bundle, of the end plate. Compared with a traditional anti-floating anchor, the anti-floating anchor can reach the design elevation through one time of dry operation, operation is easy, the construction speed is high, and the construction period can be remarkably shortened. According to the anti-floating anchor, hole collapse and hole shrinkage can be effectively avoided, the anti-floating anchor can be suitable for filling earth, silty clay, silty-fine sand and other hole collapse soil layers, the construction quality of the anti-floating anchor is improved, and the application range of the anti-floating anchor is widened.

Description

technical field [0001] The invention belongs to the technical field of building construction structures, in particular to an anti-floating anchor rod and a construction method thereof. Background technique [0002] When the depth of the building foundation is greater than the groundwater level, the building will be affected by the buoyancy of the groundwater and cause the phenomenon of floating. In the prior art, anti-floating anchor rods are usually used under the foundation floor to offset the vertical displacement of the building caused by the buoyancy. [0003] With the increasing development of underground space, the specifications of anti-floating anchors are gradually developing in the direction of large diameters. The traditional anti-floating anchor construction adopts wet operation method, the construction efficiency is low, and the mud generated during the operation will affect the environment. How to efficiently construct anti-floating bolts has become the focus ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/80E02D5/54E02D5/48E02D5/50E02D31/12
Inventor 魏彤彤吴晓东冯海荣王超屈创
Owner ANHUI TONGJI CONSTR GRP
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