Supporting method for foundation pit excavation project

A foundation pit and engineering technology, which is applied in basic structure engineering, excavation, construction, etc., can solve problems such as tedious construction period, and achieve the effect of simple stress form and saving construction period.

Active Publication Date: 2015-05-20
CHINA CONSTR EIGHT ENG DIV CORP LTD
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Problems solved by technology

However, such a construction method requires multiple concrete con

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  • Supporting method for foundation pit excavation project
  • Supporting method for foundation pit excavation project
  • Supporting method for foundation pit excavation project

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[0042] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0043] See figure 1 , figure 1 It is a schematic flow diagram of the supporting method of the foundation pit excavation engineering of the present invention. Cooperate see figure 1 As shown, the supporting method of the foundation pit excavation engineering of the present invention includes:

[0044] S101 combined figure 2 As shown, according to the excavation limit set by the construction drawings, a supporting pile 20 is formed by pouring around the foundation pit 10 to be excavated. The supporting pile 20 is preferably a cylindrical pile. After the construction of the supporting pile 20 is c...

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Abstract

The invention discloses a supporting method for a foundation pit excavation project. The supporting method comprises the following steps: constructing supporting piles around a to-be-excavated foundation pit; constructing a capping beam on each supporting pile; performing slope excavation on a soil body to form a center island area of the foundation pit and a side slope area between the center island area and the supporting piles; constructing a center concrete bottom plate in the center island area; constructing a concrete soil supporting pier on the center concrete bottom plate; erecting an inclined brace along the slope surface of the side slope area, and anchoring the two ends of the inclined brace on the concrete supporting pier and the capping beam respectively; excavating earthworks in the side slope area to be flush with the center island area, manufacturing an L-shaped support replacement plate on the bottom surface of the side slope area after excavation, supporting a horizontal section of the L-shaped support replacement plate on the center concrete bottom plate, and supporting a vertical section of the L-shaped support replacement plate on the supporting piles; and when the L-shaped support replacement plate reaches designed strength, removing the inclined brace to finish the construction. According to the supporting method disclosed by the invention, multiple times of concrete constructions are avoided, the L-shaped support replacement plate and the supporting piles form a fence for water and soil pressure of the foundation pit in a later period, and the construction period is saved.

Description

technical field [0001] The invention relates to the field of foundation pit excavation construction, in particular to a support method for foundation pit excavation engineering. Background technique [0002] Foundation pit engineering has the characteristics of large engineering volume, high technical difficulty, and many unforeseen factors. The safety and reliability of foundation pit support not only affects the foundation pit project itself, but also often affects the surrounding environment of the foundation pit. Because of this, the foundation pit support scheme must be selected in consideration of the surrounding environment; on the other hand, although the foundation pit support is a temporary structure, its cost is very high, and its impact on the total project cost cannot be ignored. Therefore, how to choose the foundation pit support form that can not only protect the environment but also be economical and reasonable has very important practical significance. [0...

Claims

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Application Information

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IPC IPC(8): E02D17/02E02D17/04
CPCE02D17/02E02D17/04E02D2300/002E02D2300/0029
Inventor 马明磊黄海冯辉吕三权王洪浩张博玮汪贵临章群尹福成
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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