Optimal capacity design of eccentrically braced steel frameworks using nonlinear response history analysis

被引:23
|
作者
Gong, Yanglin [1 ]
Xue, Yusong [2 ]
Xu, Lei [2 ]
机构
[1] Lakehead Univ, Dept Civil Engn, Thunder Bay, ON P7B 5E1, Canada
[2] Univ Waterloo, Dept Civil & Environm Engn, Waterloo, ON N2L 3G1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Structural optimization; Seismic design; Capacity design; Steel frames; Eccentrically-braced frames; Nonlinear response history analysis; Multi-objective genetic algorithm; MOMENT FRAMES; SENSITIVITY-ANALYSIS; SEISMIC RESPONSE; OPTIMIZATION; ENERGY; LINKS;
D O I
10.1016/j.engstruct.2012.10.001
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Presented in this paper is an optimal capacity design method for steel building frameworks by adopting a nonlinear response history analysis procedure as the evolution tool for the structures under extreme earthquake loading. Minimum structural weight, minimum seismic input energy, and maximum hysteretic energy of fuse members are identified as design objectives. The design constraints include plastic deformation limit on every frame member and total deformation limit on each inter-story drift. The design optimization method employs a multi-objective genetic algorithm to search for optimal member section sizes from among commercially available steel section shapes. The design method is illustrated in details for a three-story eccentrically-braced steel frame. (C) 2012 Elsevier Ltd. All rights reserved.
引用
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页码:28 / 36
页数:9
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