Lifting method of steel structure roof truss pulling bar in narrow space

A technology of narrow space and hoisting method, which is applied in the direction of building structure, building material processing, construction, etc. It can solve the problems that the crane cannot directly complete the hoisting task and the hoisting method is inconvenient, so as to achieve the small demand for hoisting space and reduce the construction cost , The effect of convenient construction

Active Publication Date: 2017-05-24
MCC5 GROUP CORP SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the space where the crane's position, width, and arm length are all limited, the crane cannot directly complete the lifting task.
[0003] Therefore there is above-mentioned inconvenience and problem in known steel structure roof truss hoisting method

Method used

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  • Lifting method of steel structure roof truss pulling bar in narrow space
  • Lifting method of steel structure roof truss pulling bar in narrow space
  • Lifting method of steel structure roof truss pulling bar in narrow space

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Embodiment 1

[0032] Fuzhou Rail Transit Command Center Project is located in the northeast corner of the intersection of Guangda Road and Da Road, Taijiang District, Fuzhou City. In this project, the roof of the 5th floor of the tower podium adopts the form of steel structure roof truss. The design service life of the steel structure is 100 years, and the structural safety level is the first grade. The length and width of the steel roof truss are 34m*30.3m, the elevation is 20.5m, and the total weight is about 400t . The upper and lower chords of the roof truss adopt welded box-shaped pipes, the maximum specification is 300*350*50*50, the minimum specification is 200*300*14*14, and the intermediate connecting rods include welded I-beams, H-beams, and welded box-shaped pipes.

[0033] The steel structure roof truss of this project is composed of 5 GHJ1 welded box tubes, 25 GHJ2 welded box tubes and GL1, GL2, GC1 steel structure connectors. The steel structure roof truss of the middle tower...

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Abstract

The invention provides a lifting method of a steel structure roof truss pulling bar in a narrow space. The steel structure roof trusses have a total weight of 400 tons, and 5 steel trusses are provided. Each steel truss is 34 meters in length, and 2 meters in height. Towers located at both sides obstruct, and do not allow a crane to enter into a site for a lifting operation. The method is characterized by comprising the steps of step a, each steel truss of the steel structure roof truss section is lifted to the assembling position of all the steel trusses, step b, assembling and welding the steel truss sections into the whole truss, step C, enabling a whole truss to be located on a concrete column by the lifting of a pulling bar to complete the installation of the steel structure roof truss. The lifting method of the steel structure roof truss pulling bar in the narrow space has the advantages of being low in space demand, simple in method, convenient in construction, capable of securing the construction of a wide-span steel truss in an effective mode, greatly reducing the safety risks in the lifting operation in the narrow space and the construction cost in the steel truss lifting operation, and satisfying the economic benefits of the lifting operation.

Description

technical field [0001] The invention relates to a method for hoisting a steel structure roof truss, in particular to a method for hoisting a rod of a steel structure roof truss in a narrow space. Background technique [0002] There are many ways to hoist steel structures in China. With the continuous development of science and technology, the shape and structure of steel structures are becoming more and more complex, which brings new challenges to the hoisting construction of steel structures. The traditional steel structure roof hoisting adopts the crane station, and the components are directly adjusted to the installation position by the length of the crane arm. Therefore, when the crane is hoisted, the crane station, width, and arm length must have enough space to complete. However, in the space where the crane's position, range, and arm length are limited, the crane cannot directly complete the hoisting task. [0003] Therefore there is above-mentioned inconvenience and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/14
Inventor 王亚刚刘家铭易图军刘风波
Owner MCC5 GROUP CORP SHANGHAI
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