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Composite flexible support integrated supporting system for building deep foundation pit engineering

A technology of support system and deep foundation pit, applied in infrastructure engineering, construction, climate change adaptation, etc., can solve problems such as poor support effect and low construction efficiency, and achieve convenient construction, improve firmness, and improve self-supporting capacity. Effect

Active Publication Date: 2021-04-16
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Flexible support structures are widely used in deep foundation pit engineering. Different from rigid supports, flexible support structures in the prior art are generally composed of rows of piles or continuous walls, and their lower ends are embedded in the soil. And through the anchor rod or internal support system to obtain additional support, its working state is generally elastic embedding, the construction of flexible support in the prior art is generally on-site construction, the construction efficiency is low, and adjacent rows of piles or continuous walls There is a rigid connection between them, and the supporting effect is poor

Method used

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  • Composite flexible support integrated supporting system for building deep foundation pit engineering
  • Composite flexible support integrated supporting system for building deep foundation pit engineering
  • Composite flexible support integrated supporting system for building deep foundation pit engineering

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Experimental program
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Effect test

Embodiment 1

[0037] refer to Figure 1-6 , a compound flexible support integrated support system for building deep foundation pit engineering, comprising the following steps:

[0038] S1. Leveling the slope of the foundation pit;

[0039] S2, rapidly spraying concrete to the slope after step S1 trimming, and timely closing the foundation pit slope;

[0040] S3. After the concrete in step S2 is solidified, use a pretreatment drilling tool to drill according to the support design, and after the drilling is completed, perform pretreatment on the inside of the borehole;

[0041] S4. After the pretreatment is completed, inject cement slurry into the anchor hole and insert the anchor rod;

[0042] S4. Install the prefabricated steel wire mesh frame on the slope of the foundation pit after the anchor bolt construction is completed. Two adjacent steel wire mesh frames are connected to the end of the anchor rod through the connecting component. The bottom of each steel mesh frame frame is reserved ...

Embodiment 2

[0048] Embodiment 2: the difference based on Embodiment 1 is;

[0049] The power driving mechanism includes: a servo motor 201, a driving gear 202, a rotating gear 203, a left switching gear 204, a right switching gear 205, a spline shaft 206 and a linkage gear 207, and the front end of the main shaft of the servo motor 201 is fixedly connected with the driving gear 202 axis. The lower side of the drive gear 202 meshes with the upper side of the rotating gear 203, and the axis of the rotating gear 203 is fixedly connected to the left side of the spline shaft 206. The left and right switching gears are respectively movably socketed on the left and right sides of the spline shaft 206. 205, the middle part of the spline shaft 206 is movably connected with the pretreatment switching mechanism, the right end of the spline shaft 206 is movably connected with the inner wall of the power drive chamber 102, the front side of the left switching gear 204 is engaged with the moving mechani...

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Abstract

The invention discloses a composite flexible support integrated supporting system for building deep foundation pit engineering, and belongs to the field of building deep foundation pit composite flexible supports. A pretreatment drilling tool designed according to the support requirement is adopted for pretreating a drilled hole, then anchoring is conducted, and the firmness of an anchor rod and the interior of a foundation pit can be effectively improved; a steel wire mesh frame is adopted for effectively covering and supporting a deep foundation pit slope in time, dynamic stress generated during slope displacement is effectively absorbed, and the supporting and buffering effects are achieved; the anchor rod and the deep foundation pit slope are integrated to jointly bear elastic strain, and the self-bearing stress of the deep foundation pit slope is improved; and elastic filler with the buffering effect, the anchor rod with the reinforcing effect and sprayed concrete jointly form the composite flexible support system, the support effect is greatly changed, and construction is convenient and efficient through prefabricated components.

Description

technical field [0001] The invention relates to the field of compound flexible support for building deep foundation pits, in particular to an integrated support system for compound flexible support for building deep foundation pit engineering. Background technique [0002] The foundation pit support is to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit, and the support, reinforcement and protection measures are adopted for the side wall of the foundation pit and the surrounding environment. [0003] With the increasing number of high-rise buildings, the importance of foundation pit engineering is highlighted. Since most foundation pits are constructed in buildings with dense population, dense buildings, and dense underground and ground municipal pipelines, the stability and displacement of foundation pits require control. Very strict, with the full use of the underground space, the depth of the foundation pit ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D5/74
CPCY02A10/23
Inventor 方薇石立君
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY