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Seismic Analysis of Cable-Stayed Bridges using Nonlinear Static Procedures

비선형 정적 해석법을 이용한 사장교의 지진해석

  • 신동규 (한국과학기술원 건설 및 환경공학과) ;
  • 곽효경 (한국과학기술원 건설 및 환경공학과)
  • Received : 2010.09.08
  • Accepted : 2011.01.11
  • Published : 2011.04.30

Abstract

Nonlinear static procedures (NSPs) basing on the concept of performance based seismic design have become one of the promising procedures for seismic evaluation of buildings. Although it needs much less computational cost compared to nonlinear time history analysis (NTHA), its usages are limited to simple structures by its inherent restriction to structures wherein the fundamental mode dominates the response. Several new nonlinear static procedures (Modal Pushover Analysis; MPA and Improved Modal Pushover Analysis; IMPA) which can consider higher modes effect were introduced. Nonetheless, its applicability for complex structures such as cable-stayed bridge has not studied yet. This paper focuses on applicability of nonlinear static procedures for the seismic analysis of cable-stayed bridges. Moreover, reliability indexes which can predict analysis procedure's accuracy are introduced.

Acknowledgement

Supported by : 국토해양부

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