LIMIT ANALYSIS OF SPECIAL SHAPE REINFORCED CONCRETE SLAB UNDER UNIFORMLY DISTRIBUTED LOADING AFTER FIRE

In this paper,the failure mechanism of a special shape reinforced concrete slab under uniformly distributed loading,was established based on the plastic hinge line theory,and the temperature field in slab was determined by using the finite difference method.Considering the change of mechanical behavior of concrete and steel bars after elevated temperature,the section moment of plastic hinge line and the limit uniformly distributed loading were analyzed.