A simplified calculation method for dynamic characteristics of high-rise shear-wall isolated buildings

被引：0
作者：
Wang X. [1 ]
Zhao M. [1 ]
机构：
[1] College of Civil Engineering and Architecture, Anhui University of Technology, Maanshan
来源：
J Vib Shock | / 15卷 / 127-133期
关键词：
Base isolation; Dynamic characteristics; High-rise shear-wall building; Linear stiffness-gravity ratio; Simplified calculation;
D O I：
10.13465/j.cnki.jvs.2016.15.021
中图分类号：
学科分类号：
摘要：
A simplified calculation method was proposed here for the lateral dynamic characteristics of high-rise shear-wall isolated buildings. When performing the uniaxial analysis, the building structure was modeled with the lumped mass method and the first two modes were analyzed with the response spectrum method based on the criterion of modal masses. Periods, modal shapes and damping ratios of the first two modes were calculated using simplified expressions based on the linear stiffness-gravity ratio considering rotation of base isolation. Numerical simulations showed that the simplified method can catch the dynamic characteristics of the first two modes. The explicit formulas for calculating period ratios of high-rise buildings without base isolation to those with base isolation were proposed. The results provided a foundation for the practical designs of high-rise shear-wall isolated buildings. © 2016, Editorial Office of Journal of Vibration and Shock. All right reserved.
引用
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页码：127 / 133
页数：6
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