Elastic Lateral Buckling Strength of Singly Stepped Beams with Load Height Effect

하중고 효과를 고려한 일단 변단면보의 탄성좌굴강도식 개발

  • 박종섭 (상명대학교 공과대학 토목환경공학부)
  • Published : 2006.02.01


New design equations for calculating the lateral-torsional buckling moment resistances of singly stepped I-section beams subjected to general loading on the top flange are suggested based on the investigations of elastic finite-element analyses. The new equations presented in this study are compared with current moment gradient modifiers presented by other researchers and specifications. The study considered almost loading cases on buildings and bridges. The proposed equations should be easily used to calculate the lateral-torsional buckling moment resistance of stepped I-beams.


lateral-torsional buckling;beam design;moment gradient correction factor