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Parametric Analysis and Practical Calculation Method for the Stochastic Seismic Response of Soil-Pile-Structure Interaction System

ZHOU Ai-hong,YUAN Ying,HOU Zheng,ZHOU Hai-hui(Shijiazhuang University of Economics,Shijiazhuang 050031,China)  
Considering the randomness of earthquake and the nonlinearity of soil,introducing viscous-spring boundary,a loading pattern of inputting acceleration directly in harmonic response analysis is proposed.The practical calculation method of stochastic vibration response for pile-soi-structure interaction system based on pseudo-excitation method,equivalent linearization method and definite dynamic finite element method is presented.The parametric analyses of the single end-bearing pile structure are conducted in detail using this method.The results show that the parameters as inputting ground motion,pile length and soil modulu have obvious effect to seismic response of the system.The method could be employed to perform parametric analysis of pile-soil-structure interaction system subject with stochastic earthquake conveniently.
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