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검색결과 4건
1.
2014.04
구독 인증기관·개인회원 무료
The curved bridges shows very complicate behaviors compare to straight girders due to its initial curvature. Usually, the shear strength is investigated due to the aspect ratio(transverse stiffeners spacing/height of girder) and many researches have been conducted for the web shear strength for I-shaped curved girders with high aspect ratios(larger than 3). In this study, numerical studies are carried out and the results are compared with the current design practices. By the analyses, the maximum aspect ratio of a transversely stiffened web panel are suggested to revisits the validity of a limited imposed by Basler.
2.
2011.09
KCI 등재
구독 인증기관 무료, 개인회원 유료
선박은 상자형태 구조로 구성되어 있으며 선박의 선 수미, 선저만곡부, 갑판 등에 주로 사용하고 있다. 이런 구조는 박판구조이며 1차 지지부재로 사용된다. 평판구조와 비교하였을 때 상이한 거동을 보이며 일반적으로 압축하중을 받을 경우 곡률변화에 따라 다른 좌굴 및 최종 강도 경향을 나타냈다. 따라서 본 논문에서는 압축하중을 받고 있는 보강곡판인 1/2+1+1/2 bay 모델에 대하여 비선형유한요소해석을 수행하였으며 매개변수 영향은 곡률변화뿐만 아니라 세장비, 웨브높이/두께 등을 고려하여 해석모델에 대한 붕괴모드에 대해 검토하였다.
4,000원
3.
2019.04
서비스 종료(열람 제한)
The purpose of this study is to evaluate the safety of curved orthogonal anisoropic bridge girder oblique plates through structural analysis, load test, and steel non - destructive investigation.
As a result of the analysis, it is considered that the stress generated in the oblique plates is within 10% of the allowable stress and that the stress generated in the oblique plates in the actual traffic load state is very small and structurally safe.
4.
2013.10
서비스 종료(열람 제한)
Curved girders show very complex behavior compare to straight girders because the torsional moments always act on the structure even if there are no additional loads except self-weight. For this reason, engineers need to consider torsional behavior when design or analyse structure. However, most of curved bridges are designed as a series of straight girders because design specification does not reflect the curved beam theory. In this paper, curved girders are analysed by FEA program and the results are compared with the results of straight girders. Selecting the radius of curvature as a parameter, suitable analysis method for design of horizontally curved girder was suggested.
