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A composite flexible support integrated support system for deep foundation pit engineering

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

Active Publication Date: 2022-07-12
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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  • A composite flexible support integrated support system for deep foundation pit engineering
  • A composite flexible support integrated support system for deep foundation pit engineering
  • A composite flexible support integrated support system for deep foundation pit engineering

Examples

Experimental program
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Effect test

Embodiment 1

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

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

[0039] S2. Quickly spray concrete on the slope trimmed in step S1, and seal the foundation pit slope in time;

[0040] S3. After the concrete in step S2 is solidified, use a pre-treatment drilling tool to drill the hole according to the support design, and after the drilling is completed, pre-process the inside of the drill hole;

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

[0042] S4. Install a prefabricated steel mesh frame on the slope of the foundation pit after the construction of the anchor rod. Two adjacent steel mesh frames are connected to the ends of the anchor rod through connecting components. The bottom of each steel mesh frame frame is reserved for insertion ends. Insert the ...

Embodiment 2

[0048] Embodiment 2: What is different 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. The front end of the main shaft of the servo motor 201 is fixedly connected to the shaft center of the driving gear 202, The lower side of the driving gear 202 is meshed with the upper side of the rotating gear 203, the axis of the rotating gear 203 is fixedly connected to the left side of the spline shaft 206, and the left switching gear 204 and the right switching gear are respectively movably sleeved on the left and right sides of the middle of the spline shaft 206. 205, the middle 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 compartment 102, the front side of the left sw...

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Abstract

The invention discloses a composite flexible support integrated support system for building deep foundation pit engineering, which belongs to the field of composite flexible support for building deep foundation pits. After pretreatment, anchoring can effectively improve the firmness of the anchor rod and the inside of the foundation pit, and the use of steel mesh frame can effectively cover and support the deep foundation pit slope in time, and effectively absorb the generation of slope displacement. The dynamic stress of the deep foundation pit has the effect of supporting and buffering. The anchor rod and the deep foundation pit slope protection are integrated to bear the elastic strain, and the self-bearing capacity of the deep foundation pit slope is improved. The elastic filler for buffering effect, the anchor rod for reinforcement effect and shotcrete are composed The composite flexible support system greatly changes the support effect, and the prefabricated components make the construction convenient and efficient.

Description

technical field [0001] The invention relates to the field of composite flexible support for building deep foundation pits, in particular to a composite flexible support integrated support system for building deep foundation pit engineering. Background technique [0002] The foundation pit support is to ensure the safety of the construction of the underground structure and the surrounding environment of the foundation pit. [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 above-ground municipal pipelines, the stability and displacement of foundation pits are required to be controlled. Very strict, with the full utilization of underground space, the depth of the foundation pit continues to increase, and the requirements for foundation pit support are higher. [0004] Flexible support st...

Claims

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Application Information

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