Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Basic Research for Resistance Prediction of Aluminium Alloy Plate Girders Subjected to Patch Loading

패치로딩을 받는 알루미늄 합금 플레이트 거더의 강도 예측에 대한 기초 연구

  • Oh, Young-Cheol (Dep. of Ocean System Engineering, Graduate School, MMU) ;
  • Bae, Dong-Gyun (Annex Research Institute of Korea Consolidation Design Co., Ltd.) ;
  • Ko, Jae-Yong (Dep. of Naval Architecture & Ocean Engineering, College of Marine Technology, MMU)
  • 오영철 (목포해양대학교 대학원 해양시스템공학과) ;
  • 배동균 ((주)한국종합설계 부설연구소) ;
  • 고재용 (목포해양대학교 해양공과대학 조선해양공학과)
  • Received : 2013.12.09
  • Accepted : 2014.04.25
  • Published : 2014.04.30
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Abstract

In this paper, it performed to the elastic-plastic large deflection series analysis using the experimental model and predicted a failure mode and ultimate strength. The collapse mode of numerical analysis model is formed a plastic hinge on loaded flange and consistent with the collapse mode of experimental model. Also, The yield line is formed in the web could observed that have occurred the crippling collapse mode and the ultimate loads of the experimental model and numerical analysis model have maintained linearly Means 1.07, Standard deviation 0.04, Coefficient of variation(COV) 0.04 and the result of ultimate loads have appeared approximately 8% error rate. it was found that very satisfied to the experimental results and the applied rules. if it is considered to be maintain a reasonable safety level, it is possible to predict the failure modes of aluminium alloy plate girders and ultimate loads.

본 연구에서는 실험 모형을 이용한 탄소성 대변형 시리즈 해석을 수행하여 플레이트 거더의 파손모드와 최종하중을 예측하였다. 수치해석 모형의 붕괴모드는 재하 시 플랜지에서 소성 힌지가 형성되었으며 실험모형의 붕괴모드와 일치하였다. 또한, 웹에서 항복선이 형성되어 크리플링 붕괴모드가 발생하는 것을 관찰할 수 있었으며 각각의 실험모형과 수치모형 최종하중의 평균값 1.07, 표준편차 0.04, 변동계수 0.04로 선형성을 유지하였으며 전체 최종하중 결과도 대략 8 % 오차를 나타내었다. 이는 수치모형 결과가 실험 및 적용 기준에 매우 만족하고 양호한 결과를 도출하였다고 생각한다. 따라서 알루미늄합금 플레이트 거더의 최종하중 예측 시 실험 및 적용 기준과 함께 병행하여 적용을 한다면 이에 대한 합리적 안전수준을 유지한다면 더 효율적이고 경제적 알루미늄 합금 플레이트 거더의 파손모드 및 최종하중에 대해 예측할 수 있을 거라고 생각한다.

Keywords

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