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WANG Zhi-hua, CHEN Guo-xing, HU Qing-xing. FULLY NON-STATIONARY STOCHASTIC SEISMIC ANALYSIS OF SUPERGIANT BRIDGE PILE FOUNDATION[J]. Engineering Mechanics, 2010, 27(2): 172-177.
Citation: WANG Zhi-hua, CHEN Guo-xing, HU Qing-xing. FULLY NON-STATIONARY STOCHASTIC SEISMIC ANALYSIS OF SUPERGIANT BRIDGE PILE FOUNDATION[J]. Engineering Mechanics, 2010, 27(2): 172-177.
shu

FULLY NON-STATIONARY STOCHASTIC SEISMIC ANALYSIS OF SUPERGIANT BRIDGE PILE FOUNDATION

  • (Institute of Geotechnical Engineering, Nanjing University of Technology, Nanjing 210009, China)

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  • Received Date: December 31, 1899
  • Revised Date: December 31, 1899
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  • In this paper, the non-stationary stochastic seismic motion model presented by authors is used to analyze stochastic seismic response of a supergiant pile group foundation employed to support the bridge. The pile group-soil-pier structure is treated as a whole and the finite element method and complex response technique are used to perform the analysis. Firstly, the input time-frequency evolutionary power spectrum is defined according to the intensity and energy information of target acceleration time-history. Secondly, stochastic seismic responses of a free field and a pile group-soil-pier structure system under a nonstationary stochastic seismic excitation are analyzed respectively, and the dynamic pile group-soil-pier structure interaction is discussed. Finally, the effects of frequency nonstationarity on seismic responses of the interaction system are discussed.
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