地基土-两层偏心结构相互作用体系平扭耦联参数分析

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (7) : 128-132,.

论文

地基土-两层偏心结构相互作用体系平扭耦联参数分析

王美丽1,2;姜忻良1,3

作者信息 +

Parametric Research on Torsional Coupling of Eccentric Two-tier Building with Foundation Interaction

WANG Qing-hua1, YANG Tian-hai1, SHEN Run-jie2, YANG Bin3
WANG Mei-li 1,2;JIANG Xin-liang 1,3

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摘要

为研究地基土－两层偏心结构相互作用体系的地震反应，本文对平扭耦联问题进行了参数分析。利用拉格朗日能量法建立了土－两层偏心结构相互作用体系平扭耦联运动方程，求得频域内解析解，并编制MATLAB程序，确定了影响两层偏心结构平扭耦联的主要参数，详细分析了扭平频率比Ω、偏心率B、偏心楼层位置和地基土特性等参数对相互作用体系弹性地震反应的影响规律，以及对平扭耦联程度的影响状况，得到了一些与刚基上偏心结构平扭耦联反应不同的参数影响规律，为工程计算和设计提供参考。

Abstract

In order to study the earthquake response of eccentric two-tier building with foundation interaction, parametric research on lateral-torsional coupling response is carried out in this paper. Lateral-torsional coupling vibration equations of soil-asymmetric structure system are established based on the Lagrangian energy method. The analytical solution in frequency domain is obtained and a MATLAB program is made. Then, the main impact parameters influencing the torsional-lateral coupled response are determined and the influence of torsional to translational frequency ratio Ω, eccentricity ratio B, the location of eccentric floor and the foundation properties on the elastic seismic response and the lateral-torsional coupling effect of the interaction system are thoroughly analyzed. Finally, some valuable conclusions different from the structure on rigid foundation are obtained, which can supply references to engineering calculation and design of structure.

导出引用

王美丽;姜忻良;. 地基土-两层偏心结构相互作用体系平扭耦联参数分析[J]. 振动与冲击, 2012, 31(7): 128-132,

WANG Qing-hua;YANG Tian-hai;SHEN Run-jie;YANG Bin WANG Mei-li;JIANG Xin-liang;. Parametric Research on Torsional Coupling of Eccentric Two-tier Building with Foundation Interaction [J]. Journal of Vibration and Shock, 2012, 31(7): 128-132,