한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2005년도 춘계학술대회 논문집
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- Pages.556-561
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- 2005
소성변형을 고려한 철도연속교의 강도해석
The Strength Analysis of Railroad Continuous Bridge Considering Plastic Deformation
초록
The steel shows plastic deformation after the yield point exceeds. The plastic deformation due to overloads 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 apply. 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 plastic rotation is evaluated using the moment-rotation curve proposed by Schalling and Beam-line method. Moreover, auto-moment is derived from the experiment curve.
키워드