Earthquake Responses for Non-Proportion Damping System Based on Clough-Penzien Three-Step Non-Stationary Seismic Random Model
The solution method for earthquake responses of non-proportion damping system based on Clough-Penzien three-step non-stationary seismic random model is investigated in this paper. Firstly, the unified motion equation of non-proportion damping system is set up and then decoupled by complex mode method. Secondly, the earthquake responses in time-frequency domain are calculated by taking Clough-Penzien three-step non-stationary seismic random model as excitation, which ground motion parameters consistent with that of design response spectrum in china seismic code, and then the non-stationary time-varying variance of earthquake responses can be obtained, subsequently, the variances of equivalent stationary responses are integraled in ground motion duration. At last, an example of base seismic-isolation system is given to show the application of the proposed method.
Chaohe Chen, Yong Huang and Guangfan Li
D. M. Huang "Earthquake Responses for Non-Proportion Damping System Based on Clough-Penzien Three-Step Non-Stationary Seismic Random Model", Advanced Materials Research, Vols. 243-249, pp. 3927-3933, 2011