Installation method of curved-surface net rack of roof

Abstract

The invention discloses an installation method of the curved-surface net rack of a roof, comprising the steps of installing a steel column supporting system and a hoisting system, dividing the curved-surface net rack of the roof into a middle section, and N pairs of two-end sections which extend to the two ends from the middle and are mutually symmetrical on a floor layer; hoisting section by section from the middle section, and assembling and closing the middle section with adjacent two-end sections; and finally hoisting each hoisting point of the curved-surface integral net rack after the assembly is finished to a predetermined height in the same proportion, so as to complete installation. In the way, only short and few temporary supports need to be used, the potential hazards of overhead working are reduced, and construction progress is accelerated.

Description

technical field [0001] The invention relates to a grid installation method, in particular to a construction method for lifting and installing a large-curved curved roof grid. Background technique [0002] The hoisting and installation of large-area and large-curved curved roof grids generally adopts a synchronous lifting installation method. On the ground floor, the grids are assembled according to the radian shape of the roof, that is, on the ground layer, the welded ball nodes of the roof grids are tilted according to the lower chords of the roof grids. Temporary steel pipe supports are set up one by one to support the lower chord welding balls of the grid, so that the nodes of each lower chord ball are on the design arc, and the formed arc is the same as the grid arc after the roof is completed. The roof steel grid is assembled and connected on the ground. Finally, use the support, adopt the principle of flexible steel strand load-bearing, lifting cylinder cluster, comput...

AI Technical Summary

Problems solved by technology

[0003] For the installation of roof grids with large area, large arc and long arc length, this construction method needs to set up a large number of temporary steel pipe supports on the ground layer, especially the temporary steel pipes in the middle of the arc of the grid. The height of the support is too high, which not only poses safety hazards in operation and construction, but also is not conducive to the quality control and inspection of grid welding, and the construction progress is also seriously affected by the complicated procedures.

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