钢筋混凝土框架结构采用防屈曲支撑加固分析  

Analysis of a Reinforced Concrete Frame Structure Strengthened by Applying BRBs

作　　者：唐俊[1] 徐章雄[1] 卢文胜[1] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《结构工程师》2015年第3期157-161,共5页Structural Engineers

基　　金：上海市科技委项目(13dz1203402)

摘　　要：某钢筋混凝土结构建造近80年,结构性能退化严重。由于顶层结构柱截面突变,导致4-6层抗震层间位移角超限。采用局部布置防屈曲支撑对结构进行加固,并与增大截面加固法对比分析,表明该方法能更经济有效地改善结构抗震性能,确保整体结构满足现行规范的要求。The structural performances of an 80-year old reinforced concrete degrade seriously. Due to the reduction of column sections at upper stories, the story drifts at the 4th to 6th floors are beyond the limitation of the current seismic codes. By analyzing and comparing the strengthening methods of buckling restrained brace and enlarging the column-cross-section area, the former proved to be more economical and efficient in improving seismic performances and ensuring the overall structure to meet the current code requirements.

关 键 词：钢筋混凝土框架结构 防屈曲支撑 结构加固 增大截面加固法 

分 类 号：TU375.4[建筑科学—结构工程]