Study on numerical simulation of fire resistance of honeycomb composite beams under fixed constraints
The numerical simulation analysis of the fire resistance of honeycomb composite beams under fixed constraint can provide theoretical support for enhancing the fire resistance and load-bearing capacity of building structures.To investigate the fire resistance of honeycomb composite beams under fixed constraints,the finite element analysis model of dead load heating of honeycomb composite beams under fixed constraints was established by using ABAQUS finite element analysis software.The effects of different opening positions and opening rates at the end of steel beams,as well as whether or not to set stiffening ribs and other parameters on the fire resistance of the composite beams are considered.The results show that when the opening position of the first hole at the beam end is twice as long as the normal opening distance,the ability of the honeycomb composite beam to resist flexural deformation and torsional buckling under high fire temperature is significantly improved,which is about 29.29%higher than that of the normal opening.The larger the opening rate of the composite beam,the greater the deflection deformation of the composite beam.The setting of stiffeners can significantly improve the deformation resistance and local buckling ability of composite beams.
万方数据
维普
