Method for constructing foundation pit with circulating steel supports

Abstract

The invention provides a method for constructing a foundation pit with circulating steel supports. The method for constructing the foundation pit with the circulating steel supports comprises the following steps that a construction area of the foundation pit is divided into a plurality of sections in the length direction of the foundation pit, and each section of the construction area of the foundation pit is sequentially subjected to vertical support structure construction, enclosing purlin installation, steel support installation and foundation pit excavation section by section, the verticalsupport structure construction comprises the steps of embedding two rows of vertical support structures on two sides of the construction area of the foundation pit in the length direction of the foundation pit, and the tops of the vertical support structures are exposed to the earthwork of the foundation pit; the enclosing purlin installation comprises the steps that the enclosing purlins are arranged on the opposite inner sides of the exposed tops of the each row of the vertical support structure in the length direction of the foundation pit; and the steel support installation comprises thesteps that the steel supports are detachably installed between the purlins on two sides; and after the excavation of the foundation pit in the each section of the construction area of the foundation pit, the steel supports used in the completed section are removed on the purlins as the steel supports for the construction of the next section of the construction area of the foundation pit. The steelsupports of the invention can be used in a circulating mode and have good economy.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a foundation pit construction method with a steel support that can be turned around. Background technique [0002] The foundation pits of linear projects such as comprehensive utility corridors and municipal pipelines are often elongated, and the foundation pit construction is carried out in sections and sections in sequence. Long strip foundation pits are faced with many problems such as large amount of support materials, large amount of earthwork excavation, and fast construction speed. [0003] The long strip foundation pit is different from the deep and large foundation pit of the building. The long strip foundation pit has a large distribution range, the depth of the foundation pit is generally shallow, the amount of support materials is large, the material transportation is difficult, the construction period is tight, and the support that can be turned over is...

AI Technical Summary

Problems solved by technology

[0005] In view of the above situation, the present invention provides a foundation pit construction method with steel supports that can be turned around, which solves the problem of low construction accuracy, inconvenient transportation, large amount of on-site welding, poor quality, and pre-stressing when using round steel support in the construction of long strip foundation pits. Defects that are difficult to maintain and control the deformation of the foundation pit

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