Determination of the Accurate Effective Length for Buckling Design of Cable-Supported Bridges

케이블지지교량의 좌굴설계를 위한 유효좌굴길이 산정

  • Received : 2004.02.05
  • Accepted : 2004.05.24
  • Published : 2004.06.27


In order to obtain the effective length factor of beam-column members of plane frames, this paper extensively used an alignment chart approach, based on the nomograph given in LRFD-AISC specification commentaries. However, it should be noted that various simplifications and assumptions were introduced in constructing the alignment chart. To overcome the practical limitations of the alignment chart, this paper proposes a simple but accurate procedure that determined the effective buckling length for stability design of main members of cable-supported bridges. This method requires the full system buckling analysis. The numerical examples showing the suitability of the present scheme are discussed and some conclusions are drawn.


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