Construction method for deformation of supporting stand column in deep foundation pit

Abstract

The invention discloses a construction method for deformation of a supporting stand column in a deep foundation pit. Belongs to the technical field of building construction. According to the technical key points, the method comprises three major steps, the second step comprises five minor steps, the overall stability of the foundation pit can be effectively enhanced and continuous deformation of the foundation pit can be prevented through early-stage trend analysis, cushion layer pouring acceleration and steel stand column reinforcement. According to the method, collapse of the foundation pit can be effectively avoided by adopting a series of measures, the overall safety, progress and cost goals of a project are protected, a steel stand column reinforcing method is provided, the reference and guidance effects are achieved for follow-up project construction, corresponding reinforcing measures are adopted for deformation of the inner supporting steel stand column, and the construction efficiency is improved. Meanwhile, different measures are taken according to conditions, refined management and control of the project are achieved, and the overall cost and the construction period of the project are effectively saved.

Description

technical field [0001] The invention relates to the field of construction engineering, and more specifically relates to a construction method for deformation of supporting columns in deep foundation pits. Background technique [0002] In recent years, as the general public has higher and higher requirements for buildings, various high-rise buildings have sprung up, accompanied by deep foundation pits with multi-storey basements. As we all know, the foundation pit is the stage with the highest safety risk and the longest time in the entire construction stage. Once an alarm or deformation occurs in a deep foundation pit, it will have a huge impact on the project schedule and cost, and it is often difficult to deal with it in a simple way. Generally, various measures need to be taken to prevent the foundation pit from continuing to deform, thereby ensuring the safety of the foundation pit. [0003] The existing technical solutions often aim at the overall deformation of the fo...

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Problems solved by technology

[0003] The existing technical solutions often aim at the overall deformation of the foundation pit, and alleviate the deformation of the foundation pit by means of back pressure of piled soil and adjustment of the construction sequence, etc., but there is no method for dealing with the deformation of the column when the inner support is supported, and the deep foundation pit adopts the form of inner support During support, when the foundation pit is deformed, its steel columns will also produce deformation effects. If the deformed columns are not handled properly, it will lead to local force imbalance of the inner support, which will aggravate the risk of deformation of the foundation pit. In addition, during the subsequent removal of the inner support There are also potential safety hazards around the deformed column