工业厂房金属耗能器罕遇地震弹塑性时程分析

Inelastic time-history analysis of buckling restrained brace on industrial plant

为研究大跨度、重荷载、高净高工业厂房设置金属耗能器的抗震性能,以某多层框架结构工业厂房为例,对原结构和金属耗能器结构进行非线性动力弹塑性分析,分析可知,弹性阶段,金属耗能器能提供侧向刚度,控制层间位移;塑性阶段,金属耗能器能耗能减震,成为抗震第一道防线,且兼具经济性和安全性。

In order to study the seismic performance of the large-span and heavy loaded industrial plant.Based on a multilayer RC frame industrial plant as an example,this paper carries on nonlinear dynamic elastic-plastic buckling analysis on the original structure and the buckling restrained braced RC frames with the ETABS2016 software.The analysis results showed that in the elastic stage,the buckling restrained braces provided effective lateral stiffness,which improved the structure anti-torsion performance and the story drift decreased,in the plastic stage,the buckling restrained braces could give larger damping and energy dissipation performance,which could be the first line of defense for seismic energy dissipation of the structure.BRB has obvious advantage on economy and safety.