An installation method of long-span space truss

Abstract

The invention relates to an installation method for a large-span space truss. The installation method comprises the eight steps of construction preparation, embedded part construction, construction cable installation, pulley system installation, hoisting system installation, component placement, truss aerial assembly and completion acceptance. The process of construction cable installation is to arrange two main cables and one traction cable on the eight floors of a room, the span of the arrangement is 56m, and the working sag is 2.8m according to the calculation formula of L / 20; in the process of component placement, a first section of each prefabricated truss is transported by crane to the third floor by the construction cable, the remaining sections are sequentially and horizontally moved by a flat car to the vertical lower positions of the main cables, and each section is sequentially placed below each installation position by calculation of the installation positions; and the truss aerial assembly process is hoisted and assembled in five sections. The installation method for the large-span space truss has the advantages of simple operation and high installation efficiency.

Description

technical field [0001] The invention belongs to the technical field of large-span steel structures of building structures, and particularly relates to a large-span steel structure [0002] Installation method of span space truss. Background technique [0003] With the continuous progress of society and the continuous improvement of building construction level, the application of steel truss structure in building structure is becoming more and more common. For the convenience of users, the general high-rise buildings will install trestle trusses indoors to facilitate the installation of elevators; while the existing trestle trusses are installed on each floor, so their spans are relatively small, and they can be hoisted directly as a whole, and then installed more convenient. [0004] The space truss studied in the present invention is a large-span space truss, its span is 48 meters, and the length of the truss is 54 meters, and the head and tail sections of the large-span ...

AI Technical Summary

Problems solved by technology

[0004] The space truss studied in the present invention is a large-span space truss, its span is 48 meters, and the length of the truss is 54 meters, and the head and tail sections of the large-span space truss are directly arranged on the third floor and the seventh floor of the room; since the components are installed indoors, Large-scale mechanical equipment cannot be constructed. In addition, compared with the single-story trestle truss, the overall span of the space truss is relatively large, and the weight is also greatly increased. Therefore, the traditional overall hoisting and installation method of the indoor trestle truss is not suitable for the research of this invention.

[0005] Therefore, there is an urgent need to develop an installation method for large-span space trusses with convenient operation and high installation efficiency. After searching, no technical solutions identical or similar to the present invention have been found.

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