Construction method of large-span folded plate type steel roof truss

Abstract

The invention relates to a construction method of a large-span folded plate type steel roof truss. A roof truss support, a plurality of V-shaped steel frame units, a plurality of inverted-V-shaped steel frame units and an aerial scattered assembly unit form a whole roof steel frame in a folded plate shape. The construction method is characterized in that the V-shaped steel frame units and the inverted-V-shaped steel frame units are machined on the ground, the inverted-V-shaped steel frame units and the V-shaped steel frame units are integrally hoisted, and the aerial scattered assembly unit is hoisted; and an air assembly technology is carried out between the inverted-V-shaped steel frame unit and the V-shaped steel frame unit by utilizing the aerial scattered assembly unit. The construction method has the advantages that the technical problems of speed, precision, deformation and the like of ground assembly and aerial in-place measurement are solved, and the mounting precision, quality and safety of a steel structure and the project progress are effectively controlled. Roof steel frame hoisting units are reasonably divided, integral hoisting is adopted, high-altitude operation is reduced, the use efficiency, the safety coefficient, the construction quality and the construction efficiency of large hoisting machinery can be greatly improved, and the construction cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of construction, in particular to a construction method for a large-span folded-plate steel roof truss. Background technique [0002] In recent years, large-scale and complex space steel structures have developed rapidly in my country's buildings, and their application scope has become wider and wider. The reason is that it has reasonable stress and high rigidity, and is suitable for buildings with large spaces and long spans. It is also suitable for various shapes and types of designs due to its convenient fabrication and installation. At the same time, as the expression forms of space steel structures become complex and diverse, and a large number of curved surface shapes appear, the difficulty of construction increases, and the requirements for building construction also increase. The process deployment, measurement and positioning, structural force and unloading deformation during the construction of th...

AI Technical Summary

Problems solved by technology

Solve technical problems such as ground assembly and aerial in-position measurement speed, accuracy, deformation, etc., and realize effective control of steel structure installation accuracy, quality and safety, and project progress; rationally divide roof steel frame hoisting units, and adopt overall hoisting to reduce high-altitude Operation can greatly improve the efficiency, safety factor, construction quality and construction efficiency of large-scale hoisting machinery, and reduce construction costs

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