重庆某框架结构降度加固设计方案对比分析

Comparative Analysis on Degree Reduction and Reinforcement Design Schemes of a Frame Structure in Chongqing

某多层钢筋混凝土框架结构,由于建筑抗震设防类别提高需要进行抗震加固设计。对比两种加固方案,方案一为增设剪力墙的体系加固法,方案二为增设黏滞型阻尼器的消能减震加固法。通过对比两种加固方案的地震力计算参数、加固工程量、加固工期,结果表明消能减震加固法有效降低了结构的地震作用,其结构加固范围小,加固周期短,方案二具有明显的实用价值。

There is a multi-storey reinforced concrete frame structure which needs seismic reinforcement design due to the requirement of seismic fortification.There are two reinforcement schemes,Scheme A is the system reinforcement method by adding shear walls,and Scheme B is the energy dissipation and shock absorption reinforcement method by adding viscous damper.By comparing the seismic force calculation parameters,reinforcement engineering quantity and reinforcement time of the two reinforcement schemes,the results showed that Scheme B effectively reduces the seismic action of the structure,with a smaller structural reinforcement range and a short reinforcement time.So Scheme B has obvious practical value.