ANALYTICAL STUDY ON BUCKLING RESTRAINED BRACED COMPOSITE FRAMES
Analytical study on the seismic behaviour of boltendplate connected concrete filled tube column (CFT) and steel beam composite frames with buckling restrained braces (BRBs) is being conducted. The objective of this study is to investigate the seismic performance of this type of frame and to evaluate existing design criteria. According to China-related design standards and displacement-based design procedures,a 10-story prototype building was designed with buckling restrained braced frames (BRBFs) as the lateral load resisting system. The columns in this frame are CFT members and the beams are structural steel sections. A planar BRBF was extracted from the prototype building for analysis. The analysis software SAP2000 was used to model the prototype frame including material and geometric nonlinearities and nonlinear time history analyses were conducted using an ensemble of ground motions. The earthquake records were scaled to three different seismic input levels: frequent occurrence earthquake (FOE),design basis earthquake (DBE),and maximum considered earthquake (MCE). Acceptable BRBF behaviour was observed at different seismic input levels. A largescale BRBF experimental investigation with substructure pseudo dynamic test technique is planned. This paper presents the results of the analytical study and briefly summarizes the upcoming experimental program.
Buckling restrained braces Structural analysis Composite frames Performance-based design
Yu-Rong Guo Zhi-Mao Wang Yan Xiao
College of Civil Engineering,Hunan University,Changsha,410082 P.R. China College of Civil Engineering,Hunan University,Changsha,410082 P.R. China Department of Civil Enginee
国际会议
The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)
广州
英文
2055-2059
2010-12-01（万方平台首次上网日期，不代表论文的发表时间）