Method for dismantling and replacing inner support of foundation pit

A foundation pit and temporary support technology, applied in excavation, infrastructure engineering, construction, etc., can solve the problems of poor safety and stability, long time-consuming, high cost, etc., to improve safety and stability, wide applicability, improve construction efficiency and economy benefit effect

Active Publication Date: 2020-06-19
中建四局土木工程有限公司 +1
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a method for removing and replacing supports in foundation pits, aiming to solve the problems of high cost, long time-consuming and poor safety and stability of existing methods for removing and replacing supports in foundation pits

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  • Method for dismantling and replacing inner support of foundation pit
  • Method for dismantling and replacing inner support of foundation pit
  • Method for dismantling and replacing inner support of foundation pit

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Embodiment Construction

[0040] The present invention provides a method for removing and replacing supports in a foundation pit. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] see figure 1 , figure 1 A flow chart of a preferred embodiment of a method for removing and replacing supports in a foundation pit provided by the present invention, as shown in the figure, includes steps:

[0042] S10. When the steel pipe column and the structural beam collide with each other, embed a predetermined length of shaped steel in the structural beam, and weld the shaped steel and the steel pipe column;

[0043] S20. Set channel steel at predetermined distances on the post-cast belt of the basement floor slab, and the two ends of the c...

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Abstract

The invention discloses a method for dismantling and replacing an inner support of a foundation pit. The method comprises the following steps that when a steel pipe upright post and a structural beamcollide with each other, section steel with a preset length is embedded in the structural beam, and the section steel and the steel pipe upright post are welded; channel steel is arranged at the bottom of a post-cast strip of a basement floor plate at intervals of preset distances, the two ends of the channel steel penetrate into the portions, on the two sides of the post-cast strip, of the floorplate, and concrete is poured on the post-cast strip; and in the process of symmetrically partitioning and dismantling the inner support, a temporary support is arranged between the floor plate constructed in advance and the steel pipe upright post. The method for dismantling and replacing the inner support of the foundation pit ensures the stability of the floor plate and the structural beam andforce transmission continuity when the inner support of the foundation pit is dismantled, improves the safety stability of the structure, simultaneously improves the construction efficiency and the economic benefit, provides a reference value for dismantling the inner support of the foundation pit, and has wide applicability.

Description

technical field [0001] The invention relates to the field of foundation pit support, in particular to a method for removing and replacing supports in a foundation pit. Background technique [0002] The scale and number of high-rise buildings are increasing day by day. They have the characteristics of many floors, high buildings, large loads, large areas, complex shapes, and increased structural density. It is necessary to set a certain depth of foundation pit on the structure, and to set up a foundation pit on the use. Multi-level basement. During the excavation of the foundation pit, it is necessary to ensure the safety of the underground structure construction and the surrounding environment. Therefore, it is necessary to set up a certain temporary support form in the foundation pit to ensure the stability of the foundation pit and surrounding buildings. The support form in the deep foundation pit During the demolition process, the stress pattern of the foundation pit str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04
CPCE02D17/04E02D2300/0029E02D2300/002
Inventor 常前永王尚宁吴雅婷罗烨钦陈星旭张善硕何志德卜诗进
Owner 中建四局土木工程有限公司
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