String-tensioning structure system in large-span stiff frame reinforcement and construction method thereof

Abstract

The invention discloses a string-tensioning structure system in large-span stiff frame reinforcement. Bracket fixing parts are arranged on a factory frame, a lower string is tensioned between the twobracket fixing parts, and supporting rods are supported between the lower string and a steel beam. With the string-tensioning structure system in the large-span stiff frame reinforcement, the bearingcapacity of the steel beam can be substantially improved, and with the bracket fixing parts, tensioning and fixing of the lower string can be operated more easily.

Description

technical field [0001] The invention relates to a tension string structure system in the reinforcement of a large-span rigid frame. The present invention also relates to the construction method of the string tension structure system in the reinforcement of the above-mentioned large-span rigid frame. Background technique [0002] Along with the reform and opening up, since the 1980s, my country has built a large number of industrial plants. With the development of industrial modernization in recent years, a large number of portal frame factory structures built in the early stage generally face the problem of increased loads on the structures due to changes in use functions, which makes the original structural bearing capacity unable to meet the current code requirements. In urgent need of reinforcement. [0003] Conventional portal frame reinforcement is generally passive reinforcement, which usually adopts methods such as enlarging the cross-section and adding supports, et...

AI Technical Summary

Problems solved by technology

With the development of industrial modernization in recent years, a large number of portal frame factory structures built in the early stage generally face the problem of increased loads on the structures due to changes in use functions, which makes the original structural bearing capacity unable to meet the current code requirements. In urgent need of reinforcement

[0003] Conventional portal frame reinforcement is generally passive reinforcement, which usually adopts methods such as enlarging the cross-section and adding supports, etc., and there is a problem of secondary stress on the newly added components, which cannot guarantee the synergy with the original structure. When the load reaches a certain value, the newly added components will work, resulting in a stress difference between the original structural components and the newly added components

In addition, the workload of direct welding between the newly added components and the original components is large, and the construction quality cannot be guaranteed. During the welding process, the melting of the steel will also cause a considerable loss of the strength of the original structure after fusion.

Moreover, the traditional reinforcement method of increasing the section has a great impact on the net height of the original building, which seriously affects the use function of the original building; and the traditional reinforcement method generally needs to set up temporary supports, occupying the production space of the factory building, so that the factory building can operate normally unable to proceed

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