结构半主动变阻尼器地震反应控制数值模拟

Numerical Simulation of Earthquake by Means of Semi-active Variable Dampers

针对半主动变阻尼器地震作用下多层建筑结构基于支持向量机(SVM)的半主动控制算法,选用四条地震波即El-Centro波、Hachinohe波、Kobe波以及上海人工波,并将峰值地面加速度均调幅至0.1gal.结果表明:总体上基于SVM半主动变阻尼器能够提高对结构层间位移和速度的控制效果;特别,消除了受控结构局部加速度放大现象.

Semi-active control algorithm based on the support vector machine（ SVM） is proposed in the present paper for seismic multistory building structures. In simulations,four seismic waves including El Centro wave, Hachinohe wave, Kobe wave, and Shanghai artificial wave are taken into consideration,whose peak ground acceleration（ PGA） are all scaled to 0. 1gal. Results demonstrate that variable dampers using the SVM based semi-active control algorithm are capable of enhancing the control effectiveness; especially eliminate the local acceleration amplification phenomenon.