详情

原文传递 Optimization Analysis of Asymmetric Outrigger-Braced Structures with the Influence of Core-Wall Width

题名：	Optimization Analysis of Asymmetric Outrigger-Braced Structures with the Influence of Core-Wall Width
正文语种：	eng
作者：	Xin Chen;Guo-Kang Er;Vai Pan Iu;Chi Chiu Lam
作者单位：	Univ. of Macau;Univ. of Macau;Univ. of Macau;Univ. of Macau
关键词：	Outrigger-braced structure;Core width;Asymmetry;Optimum outrigger locations;Drift reduction;Moment reduction
摘要：	Abstract In this paper, the optimum outrigger locations of the outrigger-braced structure are studied by considering the influence of the core-wall width and structural asymmetry. The axial forces in the columns are taken as unknowns, and the compatibility equations of the columns’ axial deformation are formulated in terms of the axial forces. Then, the equations governing the optimum locations of the outriggers are formulated to minimize the top drift of the core wall. After that, the parametric analysis on the optimum locations of outriggers, drift-reduction efficiency, and moment-reduction efficiency in the base of the core wall are conducted numerically. The influences of different structural parameters on the optimum locations of outriggers, drift-reduction efficiency, and moment-reduction efficiency in the base of the core wall are all discussed. The change of optimum outrigger locations with the increase of ω is obviously when r=2 or η=0. For the structure with a larger core-wall width, a smaller number of outriggers can be adopted regarding the drift or moment-reduction efficiency. For instance, the drift or moment-reduction efficiency of the structure with one outrigger when η=0.5 is close to the drift or moment-reduction efficiency of the structure with two outriggers when η=0.25. Some results are presented for reference in the preliminary structural design of asymmetrical outrigger-braced structures with limited core width.
出版年：	2024
期刊名称：	Journal of structural engineering
卷：	150
期：	1
页码：	1.1-1.13