原文传递
Transforming Seismic Performance of Deficient Steel Concentrically Braced Frames through Implementation of Rocking Cores
| 题名： | Transforming Seismic Performance of Deficient Steel Concentrically Braced Frames through Implementation of Rocking Cores |
| 其他题名： | Qu,B.,Guo,X.,Pollino,M.,and Chi,H.(2013)."Effect of column stiffness on drift concentration in steel plate shear walls."J.Constr.Steel Res.,83(4),105–116. |
| 正文语种： | 英文 |
| 作者： | Bing Qu |
| 关键词： | Bracing;Nonlinear analysis;Rehabilitation;Seismic analysis;Simulation;Steel structures;Seismic effects |
| 摘要： | The use of steel concentrically braced frames (CBFs) has substantially increased recently. However, investigations and observations from past earthquakes suggest that some existing CBFs, particularly the older ones that are still in service but were designed without ductile detailing and compliance with state-of-the-art seismic provisions, may exhibit unfavorable performance during strong earthquake events. This research numerically examines the adequacy of a seismic rehabilitation technology for deficient multistory CBFs. The technology consists of one or multiple rocking cores (RCs) added to an existing CBF to redistribute the seismic forces applied to the frame and reduce the system seismic response. For demonstration purposes, one three-story and one six-story CBF buildings are selected and rehabilitated using the RC technology. Finite-element (FE) models of the considered systems, which explicitly take into account the effect of gusset plates, member yielding, brace buckling, brace rupture, and the P-Δ effect, are developed and validated. Through extensive nonlinear response history analyses using two suites of ground motions, seismic performance of the rehabilitated systems are evaluated. The results suggest that the RC technology is effective in enhancing seismic performance of low-rise- and midrise-deficient CBFs. Furthermore, the rehabilitated systems can benefit from the use of hysteretic energy dissipating links between RCs and existing CBF frames. |
| 出版年： | 2015 |
| 论文唯一标识： | P-26Y2015V141N05009 |
| 英文栏目名称： | Technical Papers |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001085 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 141 |
| 期： | 05 |
| 页码： | 69-80 |
相关文献
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