한국방재학회:학술대회논문집

한국방재학회 (Korean Society of Hazard Mitigation)
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초기결함과 잔류응력을 고려한 345kV 송전철탑의 비선형해석

Nonlinear Analysis of 345kV Transmission Tower Considering Initial Imperfection and Residual Stress

  • 장진원 (고려대학교 건축.사회환경공학과) ;
  • 김승준 (고려대학교 건축.사회환경공학과) ;
  • 박종섭 (상명대학교 토목환경공학부) ;
  • 강영종 (고려대학교 건축.사회환경공학과)
  • 발행 : 2008.02.28
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초록

There were two transmission tower collapses due to Typhoon 'Maemi' in 2003. The reason that a collapse was happened was excessive wind load. One was buckled in the leg part and the other was buckled in the middle bracing part. To investigate a steel transmission tower failure mechanism, 2nd order nonlinear analysis should be performed. Considering the effect of initial imperfection and theresidual stress of angle section during nonlinear analysis, this study can estimate the ultimate strength and the ultimate behavior of the transmission tower.

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