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.
出处
《结构工程师》
北大核心
2015年第3期157-161,共5页
Structural Engineers
基金
上海市科技委项目(13dz1203402)
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
reinforced concrete frame structure, buckling restrained brace, structural strengthening, enlarging the column-cross-section areel
