| Title |
Flexural Strength of HSB Plate Girder with Compact or Noncompact Web Due to Inelastic Lateral-Torsional Buckling |
| Authors |
신동구(Shin, Dong Ku) ; 조은영(Cho, Eun Young) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.6A.399 |
| Keywords |
플레이트거더;고강도강;비탄성 횡비틀림좌굴;유한요소해석;휨강도 plate girder;HSB steel;inelastic lateral-torsional buckling;finite element analysis;flexural strength |
| Abstract |
The flexural behavior of HSB plate girder with a non-slender web, due to inelastic lateral-torsional buckling, under uniform bending was investigated by the nonlinear finite element analysis. Both homogeneous sections fabricated from SM570-TMC, HSB600 or HSB800 steel and hybrid sections with HSB800 flanges and SM570-TMC web were considered. The flanges and web of selected noncomposite I-girders were modeled as thin shell elements and the geometrical and material nonlinear finite element analysis was performed by the ABAQUS program. The steel was assumed as an elasto-plastic strain hardening material. Initial imperfections and residual stresses were taken into account and their effects on the inelastic lateral-torsional buckling behavior were analyzed. The flexural strengths of selected sections obtained by the finite element analysis were compared with the nominal flexural strengths from KHBDC LSD, AASHTO LRFD, and Eurocode and the applicability of these codes in predicting the inelastic lateral torsional buckling strength of HSB plate girders with a non-slender web was assessed. |