Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Evaluation of Buckling in Prestressed Composite Truss Girder using ADINA Structure Analysis

ADINA 구조해석을 이용한 PCT 거더교 좌굴 평가에 관한 연구

  • Received : 2013.03.06
  • Accepted : 2013.08.22
  • Published : 2013.11.01
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Abstract

Recently, to resolve problems regarding legal liability for accidents and disasters, various simulation techniques such as F.E.M. and F.V.M. have been used in the field of forensic engineering. In this study, we performed mechanical structure analysis using ADINA to investigate the cause of bridge collapse accidents. Such accidents occurred owing to modified and missing processes in comparison with the original design while filling with concrete. Modified and missing processes cause buckling of the upper plate and twisting of the main girder. Through this study, we determine the exact cause of bridge collapse by comparing the evaluation of the structure stability of the original design with the evaluation of the structure stability of the modified and missing process using ADINA structure analysis. Hence, this result indicates that buckling prediction through FEA is the most effective method.

최근에는 이러한 법공학 분야에 유한요소법 및 유한체적법을 이용한 다양한 시뮬레이션 기법을 활용하여 안전사고 및 재난사고에 대한 법적 책임문제를 해명하고 보다 정확한 원인분석을 통해 원인을 규명하고 있는 추세이다. 본 연구에서는 ADINA 구조해석을 이용하여 단경교 거더교 붕괴사고에 관한 좌굴 원인분석을 수행하였다. 본 연구에서 다루는 사고는 단경교 거더교 신축 중 상현 슬래브 구성을 위한 콘크리트 타설 중 교량이 붕괴된 사고로 원설계 공법에서 가설 공법이 변경되었고 상현 콘크리트 블록 및 격벽 콘크리트 등을 미시공한 상태에서 그 다음 단계인 상현 슬래브 콘크리트 타설을 진행함으로써 구조적 불안정을 가져와 거더가 좌굴이 발생하여 붕괴된 사고이다. 사고 재현 실험이 불가한 경우 F.E.M 을 이용한 구조안정성 비교 평가는 정확한 공학적 사고의 원인을 규명하는데 효과적인 방법이다.

Keywords

References

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  2. Evaluation of the Structure Stability of a Plate Girder Bridge Using MIDAS Structure Analysis vol.38, pp.4, 2014, https://doi.org/10.3795/KSME-A.2014.38.4.451
  3. Structural Behavior of Prestressed Composite Truss Girder Considering Construction Methods vol.15, pp.3, 2015, https://doi.org/10.9798/KOSHAM.2015.15.3.69