한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2007년도 춘계학술대회 논문집
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- Pages.1068-1073
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- 2007
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Static and Free Vibration Analyses of Hybrid Girders by the Equivalent Beam Theory
초록
3D finite element analyses of a corrugated steel web girder and a steel truss web girder are conducted to investigate the static and dynamic behaviour of the hybrid girders. And the analyses results are compared with those by the equivalent beam theory. The equivalent theory is a theory that all section properties of a truss structure are replaced by section properties of a beam including the shear coefficient. When applying the equivalent beam theory, the shear coefficient of the corrugated steel web girder is estimated as the area ratio of total section to web section and that of the steel truss web girder is calculated by the equation proposed by Dewolf. Static deflections and natural frequencies by 3D finite element analyses and the those by the equivalent beam theory are relatively in good agreement.
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