Proceedings of the Computational Structural Engineering Institute Conference (한국전산구조공학회:학술대회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
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Development of Live Load Moment Equations Using Orthotropic Plate Theory

직교 이방성 판 이론을 이용한 바닥판 활하중 모멘트 산정식 개발

  • 안예준 (아주대학교 건설교통공학과) ;
  • 남석현 (아주대학교 건설교통공학과) ;
  • 박장호 (아주대학교 환경건설교통공학부) ;
  • 신영석 (아주대학교 환경건설교통공학부)
  • Published : 2006.04.01
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Abstract

Because of the orthotropic elastic properties and significant two-way bending action, orthotropic plate theory may be suitable for describing the behavior of concrete filled grid bridge decks. Current AASHTO LRFD Bridge Design Specification(2004) has live load moment equations considering flexural rigidity ratio between longitudinal and transverse direction, but the Korea highway bridge design specification(2005) doesn't. The Korea highway bridge standard specification LRFD(1996) considers an orthotropic plate model with a single load to estimate live load moments in concrete filled grid bridge decks, which may not be conservative. This paper presents live load moment equations for truck and passenger car, based on orthotropic plate theory. The equations of truck model use multiple presence factor, impact factor, design truck and design tandem of the Korea highway bridge standard specification LRFD(1996). The estimated moments are verified through finite-element analyses.

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