Construction Method of Foundation Pit with Turnable Steel Support

Abstract

The invention provides a foundation pit construction method with steel supports that can be turned over, comprising the following steps: dividing the foundation pit construction area into a plurality of sections along the length direction of the foundation pit, and vertically erecting the foundation pit construction area of ​​each section section by section. The construction of the support structure, the installation of purlins, the installation of steel supports and the excavation of the foundation pit, the construction of the vertical support structure includes two rows of vertical support structures buried on both sides of the foundation pit construction area along the length direction of the foundation , the top of the vertical support structure is exposed in the earthwork of the foundation pit; the installation of the purlins includes setting the purlins along the length direction of the foundation pit on the relative inner side of the exposed top of each row of the vertical support structure; The steel support installation includes detachable installation of steel supports between the purlins on both sides; after the excavation of the foundation pit in the foundation pit construction area of ​​each section is completed, the steel supports used in the completed section are removed on the purlins, as Steel support is used for the construction of the next foundation pit construction area. The steel support of the invention can be used repeatedly and has good economical efficiency.

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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