Method for underpinning roof structure and expanding column space of steel structure factory building

Abstract

The invention discloses a method for underpinning a roof structure and expanding a column space of a steel structure factory building, which comprises the following steps of: manufacturing a bracket sectionally according to the original column space in an area where the column space of the factory building is needed to be expanded; firmly connecting the two ends of the sectionally manufactured bracket with a support steel column or a steel column to be extracted respectively and forming a complete bracket in a full-length section of the extracted column; and cutting the needless column section of the steel column to be extracted. By the method for underpinning the roof structure and expanding the column space of the steel structure factory building, the length of the bracket can be shortened, the bracket is convenient to construct and install, the construction progress can be accelerated, construction cost is reduced, the factory building has concise and attractive appearance, and the method can be widely applied to the conventional steel structure factory building modification construction.

Description

technical field [0001] The invention relates to the technical field of renovation of old factory buildings, in particular to a method for underpinning a roof structure and enlarging the column spacing of a steel structure factory building. Background technique [0002] In the technical transformation of the steel structure factory building, in order to meet the new process layout requirements, it may be necessary to remove some of the original factory building columns to form a larger column spacing. During this process, underpinning measures must be taken for the roof structure. The underpinning method usually adopted at present is to set two brackets equal to the full length of the extraction column to clamp the steel column to be extracted. The roof truss conversion is supported by brackets, and finally the steel columns to be extracted are removed to complete the underpinning of the roof structure. This underpinning method has a longer bracket length, and the column spa...

AI Technical Summary

Problems solved by technology

This underpinning method has a longer bracket length, and the column spacing of steel structure workshops is generally larger. If the basic column spacing is 12 meters, the bracket length will be 24 meters if one column is removed, and the bracket length will be 24 meters if two columns are removed. The length is 36 meters, which is extremely inconvenient for construction and installation; in addition, the brackets set outside the steel columns occupy the space outside the columns of the factory building, which has poor appearance and obvious traces of renovation

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