Probabilistic Structural Safety Assessment Considering the Initial Shape and Non-linearity of Steel Cable-Stayed Bridges

강사장교의 초기형상과 비선형성을 고려한 확률론적 구조안전성 평가

  • Bang, Myung-Seok (Department Safety Engineering, Chungju National University) ;
  • Han, Sung-Ho (Department Civil Engineering, Chungnam National University) ;
  • Lee, Woo-Sang (Korea Research Institute of Smart Materials & Structure System) ;
  • Lee, Chin-Ok (Department Civil Engineering, Chungnam National University)
  • 방명석 (충주대학교 안전공학과) ;
  • 한성호 (충남대학교 토목공학과) ;
  • 이우상 (한국스마트구조시스템연구원) ;
  • 이진옥 (충남대학교 토목공학과)
  • Received : 2010.01.15
  • Accepted : 2010.05.07
  • Published : 2010.06.30

Abstract

In this study, the advanced numerical algorithm is developed which can performed the static and dynamic stochastic finite element analysis by considering the effect of uncertainties included in the member stiffness of steel cable-stayed bridges and seismic load. After conducting the linear and nonlinear initial shape analysis, the advanced numerical algorithm is the assessment tool which can performed structural the response analysis considering the static linearity and non-linearity of before or after induced intial tensile force, and examined the reliability assessment more efficiently. The verification of the developed numerical algorithm is evaluated by analyzing the regression analysis and coefficient of correlation using the direct monte carlo simulation. Also, the dynamic response characteristic and coefficient of variation of the steel cable-stayed bridge is calculated by considering the uncertainty of random variables using the developed numerical algorithm. In addition, the quantitative structural safety of the steel cable-stayed bridges is evaluated by conducting the reliability assessment based upon the dynamic stochastic finite element analysis result.

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