한국안전학회지 (Journal of the Korean Society of Safety)

  • 제17권4호
  • /
  • Pages.146-152
  • /
  • 2002
  • /
  • 1738-3803(pISSN)
  • /
  • 2383-9953(eISSN)
한국안전학회 (The Korean Society of Safety)
권호 표지

I-Beam연속교 내측지점의 소성변형에 관한 연구

Study on Plastic Deformation of Interior Support at the Continuous I-Beam Bridge

  • 정경희 (한국철도대학교 철도시설토목과) ;
  • 김진성 (인덕대학 건설환경) ;
  • 양승이 (콜로라도 주립대 토목환경공학과)
  • Chung, Kyung-Hee (Department of Railroad and Civil Engineering, Korean National Railroad College) ;
  • Kim, Jin-Sung (Department of Architecture and Environmental Engineering, Induk Institute of Technology) ;
  • Yang, Seung-Ie (Department of Civil and Environmental Engineering, University of Colorado at Boulder)
  • 발행 : 2002.12.01
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초록

The steel shows plastic deformation after the yield point exceeds. Because of overloads, the plastic deformation occurs at the interior support of a continuous bridge. The plastic deformation is concentrated at the interior support, and the permanence deformation at the interior support remains after loads pass. Because local yielding causes the positive moment at the interior support, it is called "auto moment". Auto moment redistributes the elastic moment. Because of redistribution, auto moment decreases the negative moment at the interior support of a continuous bridge. In this paper, the moment-rotation curve from Schalling is used. The Plastic rotation is computed by using Beam-line method, and auto moment is calculated based on the experiment curve. The design example is presented using limit state criterion.

키워드

참고문헌

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  10. 정경희, '내측지점 및 경간내의 소성변형을 고려한 3경간 연속 합성판형교의 강도해석,' 박사학위논문, 홍익대학교 대학원, 1996
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