Probabilistic analysis of buckling loads of bridges

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, the Koiter law has been extended to be consistent with the evaluation of the probabilistic variation of buckling strength. The extension is the consideration of the second order (minor) imperfections, in addition to the first order (major) imperfections considered in the Koiter law. Explicit formulas are presented to be readily applicable to the numerical evaluation of imperfection sensitivity. As a revision of the results in [1], a procedure to describe the probabilistic variation of critical loads is presented for the case where initial imperfections of structures are subject to a multivariate normal distribution; the formula for the probability density function of critical loads is derived by considering up to the second order imperfections. As a new application, the probabilistic variation of live loads of bridges is considered.

Original languageEnglish
Title of host publicationProceedings of the 9th International Conference on Computational Structures Technology, CST 2008
PublisherCivil-Comp Press
Volume88
ISBN (Print)9781905088232
Publication statusPublished - 2008 Jan 1
Event9th International Conference on Computational Structures Technology, CST 2008 - Athens, Greece
Duration: 2008 Sep 22008 Sep 5

Other

Other9th International Conference on Computational Structures Technology, CST 2008
CountryGreece
CityAthens
Period08/9/208/9/5

Keywords

  • Bridge
  • Buckling load
  • Imperfection sensitivity law
  • Live loads
  • Probabilistic variation

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Civil and Structural Engineering
  • Artificial Intelligence
  • Environmental Engineering

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