徐继东，黄坤耀，李  静
    (上海维固建筑结构设计有限公司，上海200235)

[摘要] 采用时程分析法对上海外滩的一幢历史建筑进行了弹塑性分析，以结构的层问位移和主要构件的承载力需求作为性能目标，通过设置防屈曲耗能支撑控制结构在小震和大震下的性能指标，分析表明采用防屈曲耗能支撑后结构的整体性能指标能够满足“小震不坏、中震可修、大震不倒”的抗震设防目标，主要构件的加固量大幅度减少，对原结构的破坏和影响降到最低。
[关键词] 防屈曲支撑；历史建筑；弹塑性分析；加固修复

    Application of buckling restrained brace in strengthening of a historical building
    Xu Jidong, Huang Kunyao, Li Jing
    ( Shanghai WEGO Building Structure Design Co., Ltd., Shanghai 200235, China)

Abstract: The time history analysis method is used in elasto-plastic analysis for a historical building at Shanghai Bund. With structural storey drift and loading requirement of main components as the character aim, the character index of buckling restrained brace is set with the assumption ofunder small and large earthquakes. The analysis result showed that by using buckling restrained brace, the integrity of whole structure could realize the anti-seisnuc aim of "low damage in small earthquake, repairable under moderate earthquake, low collapsing under strong earthquake". The amount of reinforcement work on mam components is greatly reduced, and the destruction and influence of earthquake on original structure decrease to mimmum.
Keywords: buckling restrained brace; historical building; elasto-plastic analysis; strengthening and renovation