Probability density evolution method-based aseismaticreliability analysis of nonlinear structures

LIU Zhangjun;LI Jie

Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (9) : 1-4.

PDF(716 KB)
PDF(716 KB)
Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (9) : 1-4.
论文

Probability density evolution method-based aseismaticreliability analysis of nonlinear structures

  • LIU Zhangjun;LI Jie
Author information +
History +

Abstract

Employing the orthogonal expansion method, earthquake acceleration process is represented as a linear combination of deterministic functions modulated by 10 independent random variables. So, it is natural to combine the probability density evolution method (PDEM) and the orthogonal expansion of seismic ground motion to study the nonlinear stochastic earthquake response. Furthermore, the aseismatic reliability of structures is assessed using the idea of equivalent extreme-value, which can be used accurately to evaluate structural systems under compound failure criterion. A hysteretic nonlinear structure is taken as an example. The failure probability and reliability of the nonlinear shear frame structure with 10 degrees of freedom subjected to stochastic ground motions are investigated. The result indicates the system reliability of the structure is lower than the reliability of each story. The investigation shows that the proposed approach is of fair accuracy and acceptable efficiency for seismic reliability.

Key words

nonlinear structure / aseismatic reliability / orthogonal expansion / probability density evolution method

Cite this article

Download Citations
LIU Zhangjun;LI Jie. Probability density evolution method-based aseismaticreliability analysis of nonlinear structures[J]. Journal of Vibration and Shock, 2009, 28(9): 1-4
PDF(716 KB)

Accesses

Citation

Detail

Sections
Recommended

/