Fire resistance analysis of suspen-dome structure with discontinuous support in gymnasium of Tianjin University of Traditional Chinese Medicine
Taking the gymnasium of Tianjin University of Traditional Chinese Medicine as the background,the fire resistance performance of large-span suspen-dome structure with discontinuous support was analyzed.The fire temperature field was simulated by using the formula of fire temperature rise in large space.The ANSYS software was used to analyze the fire response of the suspen-dome structure with discontinuous support,and the deformation law,node displacement and prestress loss law of member under fire were obtained.The influence of fire source parameters on the fire resistance performance of the structure was investigated by changing the fire source position and the heat release power of the fire source.The results show that under the condition of central fire source,the deformation of the suspend-dome structure with discontinuous support is partly slightly convex,and the local truss is obviously sunken'.Structure is sensitive to eccentric fire,the maximum positive and negative displacements of the structure and the prestress loss of the ring cable under eccentric fire are significantly larger than those under central fire,and the prestress of the first and second ring cables is reduced to zero.The pressure bar at the local truss and the first and second ring cables are the focus of fire resistance design.The larger the heat release power of the fire source is,the more unfavorable the fire resistance of the discontinuously supported suspend-dome structure is,but the change of the heat release power of the fire source has little effect on the fire response of the structure.
NETL
NSTL
万方数据
维普
