• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 27 Issue 2
Apr.  2014
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Article Contents
SONG Pengyan, LÜ, Dagang, YU Xiaohui, WANG Guangyuan. Probability Density Evolution Analysis for Stochastic Dynamic Seismic Responses of Structures Based on Improved Point Estimation Method[J]. Journal of Southwest Jiaotong University, 2014, 27(2): 227-232. doi: 10.3969/j.issn.0258-2724.2014.02.007
Citation: SONG Pengyan, LÜ, Dagang, YU Xiaohui, WANG Guangyuan. Probability Density Evolution Analysis for Stochastic Dynamic Seismic Responses of Structures Based on Improved Point Estimation Method[J]. Journal of Southwest Jiaotong University, 2014, 27(2): 227-232. doi: 10.3969/j.issn.0258-2724.2014.02.007

Probability Density Evolution Analysis for Stochastic Dynamic Seismic Responses of Structures Based on Improved Point Estimation Method

doi: 10.3969/j.issn.0258-2724.2014.02.007
  • Received Date: 30 Nov 2012
  • Publish Date: 25 Mar 2014
  • In order to obtain the law of probability densities of structural responses varying with time, a new moment-based approach for analysis of probability density evolution of nonlinear stochastic dynamic responses of structures was developed, by combining an improved point estimation method (IPEM) with the maximum entropy theory and the probability density evolution theory for stochastic dynamics of structures. The proposed method was then used to perform probabilistic density evolution analysis and parameter sensitivity analysis of a reinforced concrete (RC) frame structure designed according to Chinese codes, selecting the top displacement and global seismic damage index of the structure under earthquake as response parameters, and taking into account the uncertainty of structural parameters. The results show that the steel yield strength, the structural damping ratio, and concrete gravity density have dominant influences on structural displacement, with a sensitivity of more than 10%.

     

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