Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Size Effects in the Failure of Specially Orthotropic Sandwich Slab Bridges

치수효과를 고려한 특별직교이방성 샌드위치 슬래브교량의 파괴강도해석

  • 한봉구 (서울산업대학교 구조공학과) ;
  • 이용호 (서울산업대학교 구조공학과)
  • Received : 2003.11.27
  • Accepted : 2004.03.24
  • Published : 2004.06.27
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Abstract

In civil engineering applications, the establishment of standards and procedures for analysis, design, fabrication, construction, and quality control are essential in facilitating the economic and efficient use of composite materials. Many bridge systems, including girders. cross beams, and concrete decks, function as specially orthotropic plates. in general, the analytical solution for such complex systems is very difficult to achieve. Thus, the finite difference method is used for the analysis of the problem. The rate of tensile strength reduction due to increased size is considered. Strength reduction is necessary to ensure the safe design of building structures. This paper suggests the use of a strength-failure analysis procedure using the reduced tensile strength. A numerical study is conducted for different cases. The Tasi-Wu failure criterion for stress space is also used.

복합재료는 건설공학 분야의 해석, 설계, 제작, 건설, 품질 제어 등에서 경제적이고 효율적인 재료로 사용될 수 있다. 많은 교량 구조물중 거더, 가로보로 이루어진 콘크리트 상판은 특별직교이방성판으로 거동한다. 이러한 경계조건을 갖는 단면 혹은 불규칙한 단면을 갖는 시스템은 해석적인 해를 구하기가 매우 어렵다. 이러한 문제에 대한 해석을 위해서 유한차분법이 이용되었다. 본 논문에서는 인장강도 감소율을 적용하여 파괴강도 해석을 수행하였다. 또한 이러한 경우에 대한 수치해석을 수행하였다. 응력영역에 대한 Tasi-Wu의 파괴기준을 적용하였다.

Keywords

Acknowledgement

Supported by : 서울산업대학교

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