Steel support and steel trestle integrated structure and construction method thereof

Abstract

The invention relates to a steel support and steel trestle integrated structure and a construction method thereof. The construction method comprises the following steps that a plurality of stand column piles are constructed in a foundation pit; steel diagonal bracings are constructed above the foundation pit, the steel diagonal bracings are arranged on the multiple stand column piles, and the two ends of the steel diagonal bracings are connected to foundation pit surrounding purlins; and gaskets are laid on the tops of the steel diagonal braces, a steel trestle is laid on the tops of the gaskets, and the relative static friction force between the gaskets and the steel diagonal braces is smaller than that between the gaskets and the steel trestle. According to the construction method, the steel diagonal bracings and the steel trestle share a vertical stress system, the number of steel members and the number of stand column piles are reduced, construction procedures are saved, multi-procedure crossing and structure crossing are avoided, and economic benefits are improved; and in addition, through laying of the gaskets, the steel trestle can be kept stable without moving when bearing upper loads, meanwhile, relative movement of the steel diagonal bracings and the gaskets is not affected, deformation of the foundation pit can be better matched, and damage to the stand column piles is avoided.

Description

Technical field[0001]The present invention relates to the field of foundation pit, refers to a steel support and steel stack bridge integrated structure and its construction method.Background technique[0002]Foundation pit support includes vertical enclosure, inner support, and pallet bridges. Steel support, steel replacement bridge has the advantage of green construction, fast construction speed, reusable use, and is often used in foundation pit construction. However, most of the projects are used in a single steel support, a single steel stack bridge or steel support (steel fountain) and the concrete system. When the steel support and the steel fountain are applied to the same foundation pit, the two are not connected, structural independent, resulting in a complex spatial structure in the foundation pit construction, more steel components and cross-construction, the number of column piles, not convenient to excavate And the construction of the foundation of the foundation pit, the...

AI Technical Summary

Problems solved by technology

When the steel support and the steel trestle are applied to the same foundation pit, they are not connected to each other and have independent structures, resulting in complex space structure, many steel components and cross construction, and a large number of column piles in the foundation pit construction, which is not convenient for earthwork excavation And the construction of the structure in the foundation pit, the construction is difficult, the construction period is long, and the cost is high

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