详情

原文传递 Optimization Approach to Uniformly Distributed Peak Interstory Drifts along Building Heights

题名：	Optimization Approach to Uniformly Distributed Peak Interstory Drifts along Building Heights
正文语种：	英文
作者：	Jui-Liang Lin1; Jyun-Ying Dai2; Keh-Chyuan Tsai3
作者单位：	1Research Fellow, National Center for Research on Earthquake Engineering, 200, Section 3, Xinhai Rd., Taipei 106, Taiwan, ROC (corresponding author). 2Graduate Student, Dept. of Civil Engineering, National Taiwan Univ.,Taipei 10617, Taiwan, ROC. 3Professor, Dept. of Civil Engineering, National Taiwan Univ., Taipei 10617, Taiwan, ROC.
关键词：	Structural optimization; Uniform interstory drifts; Seismic design; Weak story; Response spectrum analysis
摘要：	This study developed a seismic design approach, which has no need of additional structural members, to uniformly distribute the peak interstory drift ratios along building heights. The generalized building model (GBM), which can effectively imitate a building, was used to reach this aim. The flexural-shear deformation factor of a GBM, α, characterizes the deformation type of the corresponding building. Varying the deformation type of a building changes the distribution of the peak interstory drift ratios among stories. Therefore, the proposed optimization approach searches for the optimal value of α, αopt, so that the GBM’s normalized variation of peak interstory drift ratios is minimized. In response to αopt, the member properties of the original building model are adjusted. One nine-story steel moment-resisting frame was used as the example building in this study. The elastic response spectrum analysis results showed that the peak elastic interstory drift ratios of the optimized building were less varied among stories compared with the original building. In addition, 13 of 20 nonlinear response history analysis results were consistent with the trends observed from the elastic response spectrum analyses. As a result, the effectiveness of the proposed optimization approach on the investigated building was confirmed.
出版年：	2019
期刊名称：	Journal of Structural Engineering
卷：	145
期：	5
页码：	1-13