Long-span multi-section combined truss roof structural system and construction method thereof

Abstract

The invention relates to a long-span multi-section combined truss roof structural system and a construction method thereof. The structural system comprises structural columns and a roof truss, whereinthe structural columns include middle columns and side columns; the roof truss comprises main trusses and secondary main trusses, the main trusses comprise side main trusses and side main trusses, the main trusses are formed by splicing main truss units, and the head end surface and tail end surface of the main truss units are oblique end surfaces and are parallel to each other; and column connecting brackets which used for connecting the roof truss and are adapted to components of the corresponding roof truss are arranged in node regions of the structural columns. According to the construction method, the roof truss and the structural columns are sectionally lifted by virtue of the cooperation with a temporary reinforcing measure. Under the condition that the construction stress is met,the structural system is improved, the construction procedure is optimized, the construction cost is saved, the mounting efficiency is improved, and the measure cost is saved.

Description

technical field [0001] The invention relates to a roof structure system, in particular to a multi-section combined roof structure system and a construction method thereof. Background technique [0002] During the construction of long-span trusses, due to common high-altitude operations, various connection forms, and complex stresses, it is necessary to comprehensively consider the lifting method, stability, and overall stiffness of the trusses to ensure that the truss construction conforms to the design stress state. Therefore, the structural form of the truss There are quite high demands. Existing large-span trusses are generally assembled by pipe trusses or H-shaped steel trusses. These two existing trusses cannot combine performance optimization and structural optimization well, and there are insufficient rigidity, unstable stressed structures, and excessive steel consumption. The problem. [0003] At the same time, the pipe truss roof structure system and the H-shaped ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a large-span multi-section combined truss roof structure system and its construction method, to solve the technical problems of insufficient rigidity of the existing H-shaped steel truss or pipe truss, unstable stressed structure and excessive steel consumption , but also to solve the technical problem that in the existing pipe truss or H-shaped steel roof structure system, the nodes are directly connected without any positioning connection point, which leads to the offset of the connection position, and the inaccurate installation position cannot guarantee the stiffness of the connection node

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