浅析钢构件在火灾作用下的几个问题

通过对构件内部温度滞后于环境温度,构件所能承受的极限温度与荷载及约束条件的关系,构件的变形,蠕变对结构破坏的间接作用,火荷载作用下结构构件变形经历的几个过程等几个问题的讨论,进一步阐明构件在高温下是否破坏,取决于构件在火灾发生时所遭受的温度,高温作用于构件的时间,以及在此温度下产生的变形情况。

ANALYSIS ON SEVERAL QUESTIONS OF STEEL STRUCTURAL MEMBER IN FIRE

It is discussed the following problems,the internal temperature of a member lags behind in the environment temperature,the relation between the extreme limit temperature and load that the structural member can support and the restrain condition,the deformation of structural member,indirect effect of the creep on the destroy of the structure,the deformation experiences a few processes with the effect of the fire load,by which it is further clarified whether the structural member breaks under the high temperature,is decided by the temperature the structural member suffer when a fire take place,the time of the high temperature effects the structural member,and the deformation under that temperature.