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Fabrication and installation of pre-buried shear grooves in ultra-deep underground diaphragm walls

An underground diaphragm wall and construction method technology, applied to artificial islands, sheet pile walls, water conservancy projects, etc., can solve problems such as easy breakage or displacement, difficulty in digging out, and difficulty in installation and fixing, and achieves convenient removal and remarkable The effect of social benefits

Active Publication Date: 2016-04-06
SHANGHAI FOUND ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problems of difficult installation and fixation, easy breakage or displacement, and difficult digging in the later stage of the conventional pre-embedded shear groove method, and provides a method for making, installing and constructing an ultra-deep underground continuous wall pre-buried shear groove method

Method used

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  • Fabrication and installation of pre-buried shear grooves in ultra-deep underground diaphragm walls
  • Fabrication and installation of pre-buried shear grooves in ultra-deep underground diaphragm walls
  • Fabrication and installation of pre-buried shear grooves in ultra-deep underground diaphragm walls

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Embodiment Construction

[0024] The embodiments of the present invention will be described in detail below in conjunction with the drawings:

[0025] A construction method for the fabrication and installation of embedded shear troughs for ultra-deep underground continuous walls mainly includes:

[0026] (1) Selection and production of materials for embedded shear grooves

[0027] According to the design requirements of the cross-section size of the shear groove, choose a PVC square pipe with a cross-section size of 100mm (width) × 70mm (height) and a wall thickness of 5mm. The length of a single root is customized to 5m, 5.5m, Three kinds of 6m. The material requirements of the PVC square pipe: small linear expansion coefficient, low thermal conductivity and elastic modulus, easy to store in reinforced concrete, and high hardness and compressive strength, easy to resist aging, acid, alkali and salt corrosion.

[0028] (2) Assembled and combined form of embedded shear trough-PVC square pipe

[0029] The cross-...

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Abstract

The invention relates to a super-deep underground continuous wall pre-buried shear-force groove manufacturing and installing construction method. The method includes the steps that first, materials of a shear-force groove are selected; second, the shear-force groove is machined and manufactured; third, the shear-force groove is installed and fixed; fourth, later-stage protection measures are taken. According to the method, the shear-force groove embedded part is formed by splicing and assembling pre-buried PVC square tube materials in a super-deep underground continuous wall reinforcement cage with two walls combined into one wall, after a foundation is excavated, the anchored shear-force groove in the connected position of a floor and the underground continuous wall can be dug out more conveniently, and adverse influences on the wall are avoided. The method has the advantages that the materials are not prone to deformation, easy to fix, free of displacement, favorable for digging out of the shear-force groove and capable of saving time and labor in the digging out process. According to the method, the embedded anchoring strength between the floor and the continuous wall formed by combining two walls is guaranteed well, high economical and social benefits are achieved, and the method is worthy of being popularized and used in similar engineering.

Description

Technical field [0001] The invention relates to the construction and installation of pre-buried shear troughs for ultra-deep underground continuous walls, in particular to the construction of ultra-deep foundation pits during the top-down excavation and construction, in order to improve the surrounding of each floor and the ultra-deep underground continuous wall. The connection effect of the protective body, and the construction method of making and installing the embedded shear groove. Background technique [0002] As the urban construction land becomes more and more scarce, the underground space of large-scale urban complexes, important transportation hubs, urban rail transit interchange stations and other buildings are developing deeper and deeper, and basements with more than 3 floors are becoming more and more common. [0003] Taking into account the impact on the surrounding environment, more and more ultra-deep foundation pits adopt top-down excavation and structural constru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D29/02E02D5/20
Inventor 吴洁妹刘加峰张国磊李耀良郭宏斌曹飞
Owner SHANGHAI FOUND ENG GRP
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