Aseismic Performance of Buckling-Restrained Braced, Ordinary and Special Concentrically Braced Steel Frames
A seismic response analysis has been carded out in order to compare the aseismic performance of the buckling-restrained braced frame (BRBF),the special concentrically braced frame (SCBF) and the ordinary concentrically braced frame (OCBF). The analysis results indicate that,although the story drifts of the BRBF and SCBF are slightly larger than those of the OCBF,the first story shear forces of the former are greatly smaller than those of the latter. Under severe earthquake,columns in three kinds of the structures remain elastic. The out-of-plane flexural buckling as well as the deterioration of the hysteretic response for most of the braces of OCB and SCB occurs. Whereas,the buckling-restrained braces can yield in tension and compression,exhibiting better energy dissipation capacity and stable hysteretic behavior.Contrary to the larger vertical shear forces exerted on the braced beams in the OCBF or SCBF after the braces buckling,only smaller such shear forces occur in the BRBF after the braces yielding.
Buckling-restrained brace Unbonded steel plate brace encased in reinforced concrete panel Braced frame Ordinary concentrically brace Special concentrically brace Seismic response analysis
Yukun Ding Yaochun Zhang
School of Civil Engineering,Harbin Institute of Technology,Harbin,150090 China
国际会议
哈尔滨
英文
160-166
2008-10-11（万方平台首次上网日期，不代表论文的发表时间）