Steel net rack installation method for integrally improving high-altitude moving and positioning

Abstract

The invention discloses a steel net rack installation method for integrally improving high-altitude moving and positioning. The method comprises the following steps: 1) determining the initial deviation amount of a net rack and a net rack supporting structural column; 2) installing a lifting support, and installing a crossed beam on the top of the lifting support; 3) lifting the net rack through a lifting inverted chain; 4) lifting the net rack firstly and standing for 12 hours; 5) lifting the net rack again above the top of the supporting structural column; 6) reducing the initial deviation amount of the net rack at the Y-shaft direction; 7) reducing the initial deviation amount of the net rack at the X-shaft direction; 8) defining the initial deviation amount of the net rack to be zero at the Y-shaft direction; 9) defining the initial deviation amount of the net rack to be zero at the X-shaft direction; and 10) positioning the net rack on the top of the net rack supporting structural column. The method overcomes the defects of the prior art, and has the advantages that the method can simply lift the support and a crane, is convenient and rapid to construct, is stable and reliable, reduces the high-altitude operation maximally during the construction process, effectively reinforces the construction safety, improves the construction efficiency and the like.

Description

technical field [0001] The invention relates to a construction technology of a building structure installation project, in particular to a method for installing a steel grid frame for overall lifting and moving in place at a high altitude. Background technique [0002] Modern industrial plants mostly adopt continuous-span structure, the roof adopts light steel structure, truss structure or grid structure, and the roof structure is generally supported by steel columns. The grid structure has been developing rapidly in recent years, and its construction methods are emerging in an endless stream. In the past, in addition to using multiple cranes to lift, on-site high-altitude assembly and other methods, the construction unit used multiple pulling rods to hoist the grid as a whole. The method of this construction The method is to use multiple hoists to drive and suspend multiple sets of compound pulley blocks, lift the slings connected to the preset lifting points on the grid fr...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a steel grid installation method for overall lifting and moving in place at high altitude; The force is complex, the on-site installation and assembly of the winch pulley block system is complicated, and the overturning moment of the pulling rod group changes greatly, which is only applicable to the problems in the installation and construction of the grid frame with a small area and a large overall rigidity; it has simple lifting brackets and lifting tools, No need for large-scale lifting equipment and complex pulley block force transmission system, convenient, stable and reliable construction, minimize high-altitude operations during the construction process, effectively enhance the safety of construction, improve construction efficiency and other advantages

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