Wind-induced lateral-torsional coupled responses of tall buildings with non-coaxial stiffness eccentricity

被引：0

作者：

Zhao, Yue-Mei ^{[1
]}

Li, Chun-Xiang ^{[1
]}

Yu, An-Qi ^{[1
]}

Li, Jin-Hua ^{[1
]}

机构：

[1] Department of Civil Engineering, Shanghai University, Shanghai 200072, China

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2013年 / 32卷 / 02期

关键词：

Analysis frameworks - Coupled dynamic analysis - Eccentric structure - Intermodal coupling - Statistical correlation - Stiffness eccentricities - Torsional directions - Wind induced vibrations;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A dynamic analysis framework of non-coaxial eccentric structures under wind loading was presented here. Firstly, the dynamic equations of a two-storey non-coaxial eccentric structure with 6-DOF were set up. Secondly, the dynamic equations of a multi-storey non-coaxial eccentric structure were obtained via extending those of a two-storey non-coaxial eccentric structure. Thirdly, based on the power spectra of wind forces in along-wind, across-wind, and torsional directions, considering both intermodal coupling of modal response components and statistical correlation between across-wind and torsional wind loading, the analysis methodology for wind-induced lateral-torsional coupled responses of structures with non-coaxial mass eccentricity was developed in frequency domain. Eventually, taking a structure with 15-DOF for example, the effects of non-coaxial stiffness eccentricity on its wind-induced lateral-torsional coupled responses were analyzed numerically through selecting different locations of stiffness eccentricity.

引用

页码：86 / 96

共 44 条

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