Large-span cantilever tensile counterweight roof structure and construction method thereof

Abstract

The invention relates to a large-span cantilever tensile counterweight roof structure and a construction method thereof. The method comprises the steps that counterweight beams and counterweight columns are installed on a secondary roof layer, and the counterweight columns achieve horizontal limiting connection through a temporary connection structure; a temporary supporting structure is arranged on a lower layer structure to support the cantilever ends of the counterweight beams; outer ring beams are fixedly connected to the cantilever ends of the counterweight beams; inhaul cables are vertically connected between the lower layer structure and the outer ring beams, the inhaul cables are tensioned when connected, and the inhaul cables are fixedly connected with the corresponding outer ring beams after being tensioned; the counterweight columns are fixedly connected with a secondary roof layer, and the temporary connection structure and the temporary supporting structure are dismantled, so that construction of the counterweight roof structure is completed. A tensile force transmission structure is formed on the periphery of the counterweight roof structure through the inhaul cables, and the safety degree and stability of a cantilever part are improved. In the installation process, stress accumulation of integral deformation of the roof caused by tensioning of the inhaul cables can be avoided through horizontal limiting connection of the counterweight columns.

Description

technical field [0001] The invention relates to the field of building construction engineering, in particular to a large-span cantilevered tension-resistant counterweight roof structure and a construction method thereof. Background technique [0002] The construction of steel structure roofs is mostly installed gradually from bottom to top. The entire roof structure is supported by structural columns, and the force of the roof structure is transmitted downward to the main body of the building by using structural columns. For the roof structure that needs to be provided with cantilevered parts, in order to improve the stability of the roof structure, the counterweight of the central area of ​​the roof structure should be increased so that the central area has a higher tensile capacity to support the outer cantilevered parts. The amount of steel used in the area will increase, thereby increasing the construction cost. Since the overhanging part is only supported and connected...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the prior art, provide a large-span cantilevered tension-resistant counterweight roof structure and its construction method, and solve the problems caused by the increase in steel consumption caused by the increase of counterweight in existing steel structure roofs. The cost increases and the overhanging part is prone to fall, which poses a safety hazard

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