原文传递
Strongback System: A Way to Reduce Damage Concentration in Steel-Braced Frames
| 题名： | Strongback System: A Way to Reduce Damage Concentration in Steel-Braced Frames |
| 其他题名： | American Institute of Steel Construction(AISC).(2005)."Seismic provisions for structural steel buildings."AISC 341-05,Chicago.ASCE.(2005)."Minimum design loads for buildings and other structures."ASCE 7-05,Washington,DC. |
| 正文语种： | 英文 |
| 作者： | Jiun-Wei Lai |
| 关键词： | citation；centration；strong；race；frame；difference；prototype；deform；reduce；resistin |
| 摘要： | This paper examines a newly developed seismic force-resisting system: the strongback system (SBS). To achieve improved seismic performance, this system combines aspects of a traditional concentric braced frame with a mast to form a hybrid system. The mast acts like a strong back to help resist the tendency of concentric braced frames to concentrate damage in one or a few stories during severe seismic excitations. The purpose of the strongback system is to promote uniform story drifts over the height of a structure. Three SBS prototypes were designed and analyzed considering a variety of earthquake excitations. Computed responses are compared with responses for three other braced frame systems. Results of quasi-static inelastic analyses, both monotonic and cyclic, are presented to demonstrate differences in the fundamental hysteretic behavior of the braced frame systems considered. A series of nonlinear dynamic response history analyses were then performed to compare the global and local dynamic response of each system. Results show that the SBS can effectively reduce the concentration of deformations using the proposed design strategy. Simplified cost analyses demonstrated the economic feasibility of incorporating the SBS for newly constructed buildings located in seismically active regions. |
| 出版年： | 2015 |
| 论文唯一标识： | P-26Y2015V141N09016 |
| 英文栏目名称： | Technical Papers |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001198 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 141 |
| 期： | 09 |
| 页码： | 172-182 |
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