Structure for improving rigidity and stability of foundation pit steel support

Abstract

The invention provides a structure for improving rigidity and stability of a foundation pit steel support; a plurality of fish-belly sill enclosing purlins are arranged on the surrounding of a foundation pit; section steel bracings for connecting the fish-belly sill enclosing purlins are arranged in the middle of the foundation pit; edge corners of the foundation pit are provided with section steel angle braces for connecting the fish-belly sill enclosing purlins; the section steel bracings or the section steel angle braces are formed by more than two parallel section steels; the section steels are connected with each other by bolts in a length direction; the structure is characterized in that transverse and inclined fixed plates are arranged on the parallel section steels in a width direction; the fixed plates connected to the section steels by bolts; and the transverse fixed plates and the inclined fixed plates form triangular stable structures together with the section steels; and the structure for improving the rigidity and the stability of the foundation pit steel support, provided by the invention, has the advantages of large structural rigidity, good stability, small foundation pit deformation, convenience in construction, recyclable material and so on; and purposes of reducing construction period and reducing construction cost are achieved.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to an inner support structure for foundation pit support, and in particular to a structure for improving the rigidity and stability of foundation pit steel support. Background technique [0002] In the foundation pit support structure, the internal support structure is commonly used as support, mainly including reinforced concrete support and steel pipe support. The existing steel inner support is usually a steel pipe support. The diameter of the steel pipe support is fixed, and the bearing capacity cannot be adjusted arbitrarily. Facing foundation pits with various complex shapes, the bearing capacity of the support is difficult to match, and usually there will be a large bearing capacity. A situation where support is wasted. [0003] For this reason, people have invented the inner support of section steel. The section steel support includes opposite braces and diagonal ...

AI Technical Summary

Problems solved by technology

The existing steel inner support is usually a steel pipe support. The diameter of the steel pipe support is fixed, and the bearing capacity cannot be adjusted arbitrarily. Facing foundation pits with various complex shapes, the bearing capacity of the support is difficult to match, and usually there will be a large bearing capacity. The case of wasted support

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