비선형인자를 고려한 345kV 송전철탑의 유한요소해석

Finite Element Analysis of 345kV Transmission Tower considering Nonlinear Factors

  • 김종민 (고려대학교 건축.사회환경공학과) ;
  • 장진원 (포스코건설 토목지원그룹 토목환경사업본부) ;
  • 박종섭 (상명대학교 토목환경공학부) ;
  • 강영종 (고려대학교 건축.사회환경공학과)
  • 발행 : 2008.04.17

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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