防屈曲钢支撑加固某食堂结构的弹塑性时程分析

摘要

采用弹塑性时程分析方法,对北京某大空间食堂结构进行了抗震性能评估,研究了采用消能防屈曲钢支撑加固后结构的抗震性能.分析结果表明,增设防屈曲钢支撑可显著降低框架结构的最大层间位移,控制结构的塑性损伤,提高结构的抗震性能.本文方法可供类似工程参考.%In this paper, the seismic performance of a certain dining-room in Beijing with spacious framework is evaluated by elastic-plastic time history analysis, and the effect on seismic performance of the building is studied by fixing buckling restrained steel braces in the framework. The analysis result indicates that retrofitting framework structure with buckling restrained steel braces can observably reduce the displacement response, control the damage of the structure and improve the seismic performance of the building.