Research on the parameter of response spectrum of Clough-Penzien model

As an important method to calculate the dynamic response of structure, random vibration analysis is efficient as other method, like response spectrum method, time history method and so on. In the paper, the procedure for transforming response spectrum to power spectral density function attentively is studied. According to Chinese new bridge seismic code, the research on the parameters of Clough-Penzien power spectral model is carried out. The relations between Clough-Penzien spectral intensity and the mean value of maximum ground accelerations, or the earthquake intensity and maximum earthquake affecting parameter are derived. The parameters given in the paper provide a theoretical base for stochastic response analysis of structure.