In order to study the fire resistance of hinged constrained honeycomb composite beams,ABAQUS was used to carry out numerical simulation analysis of hinged constrained honeycomb composite beams.The correctness of the finite element model was verified by referring to the beam end constrained honeycomb composite beam test made by the research group.The law of displacement change and the influence of the strengthening measures(closing caverns,setting stiffeners,changing opening ratios,changing web lengths of beam end)on the fire resistance of honeycomb composite beam were analyzed.The simulation results show that during the fire the stiffener can resist the deflection deformation of the honeycomb composite beam.It is the main factor affecting the deflection deformation of the honeycomb composite beam that the caverns of beam end are open or closed,and when the caverns of the beam end are not open,the deflection deformation and torsional buckling of the honeycomb composite beam can be effectively resisted.
关键词
铰接约束/蜂窝组合梁/抗火性能/数值模拟
Key words
hinge constraint/honeycomb composite beam/fire resistance/numerical simulation
维普
万方数据