Large-span unequal-height steel structure net rack integral lifting temporary lifting point construction method

Abstract

The invention relates to a large-span unequal-height steel structure net rack integral lifting temporary lifting point construction method. The large-span unequal-height steel structure net rack integral lifting temporary lifting point construction method comprises the following steps of S1, construction preparation, and specifically, stress calculation is conducted on an assembled hangar gate truss firstly; S2, the structure of a temporary lifting point support and the form of a lifting point are determined; S3, the positions and the number of a lifting frame are determined according to the overall structure of a net rack of a hangar hall, and the positions and the number of the temporary lifting point support are determined; S4, the temporary lifting point support is arranged at the upper end of the hangar gate truss, an actual stress state is known by monitoring the stress of a component in a lifting process, and if the actual stress state exceeds the limit or is abnormal, a reasonis found, regulation and control are conducted. The large-span unequal-height steel structure net rack integral lifting temporary lifting point construction method has the effects that the assembled hangar gate truss is used as the support for the temporary lifting point support, the use amount of the temporary support is reduced, material loss is reduced, and the construction cost is reduced.

Description

technical field [0001] The present application relates to the field of installation methods for large-span grid structures, in particular to a construction method for integrally lifting temporary lifting points of grid structures with large spans and unequal heights. Background technique [0002] With the development of social economy, there are more and more steel structure buildings and structures, and the construction of steel structures is becoming more and more difficult. Traditional steel structure construction methods include high-altitude in-situ loose assembly method, which is a construction method that directly assembles structural members and nodes at the high-altitude design position. When the grid structure is installed by high-altitude in-situ loose assembly method, It is to erect a temporary bracket for assembly near the design position first, and then use a crane to lift the corresponding components of the grid frame to the design position in the air, and ass...

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Problems solved by technology

[0003] In view of the above-mentioned related technologies, the inventor believes that there is a large demand for assembling temporary supports, which will consume a large amount of materials, resulting in high construction costs.

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