Seismic Spatial Effects on Long-Span Bridge Response in Nonstationary Inhomogeneous Random Fields

This article reports on a study in which the long-span bridge response to nonstationary multiple seismic random excitations is investigated using the PEM (pseudo excitation method). This method transforms the nonstationary random response analysis into ordinary direct dynamic analysis. The authors provide the numerical results of the seismic response for an actual long-span bridge using the proposed PEM and compare them with the results based on the conventional stationary analysis. The authors note that previously, analyses of long-span bridges were thought to be very difficult. However, by using the proposed PEM, these effects can now be included in the computations conveniently and efficiently. The authors found that both the seismic spatial effect and the nonstationary effect are quite important. They conclude that both stationary and nonstationary seismic analysis should pay special attention to the wave passage effect.

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  • Authors:
    • Jiahao, Lin
    • Yahui, Zhang
    • Yan, Zhao
  • Publication Date: 2005-6


  • English

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  • Accession Number: 01003917
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 20 2005 10:08AM