Experimental Study of Post-fire Bearing Capacity of a Profiled Sheet-lightweight Aggregate Concrete Composite Floor

摘要

In order to study the post-fire bearing capacity and performance of the profiled sheet-light aggregate concrete composite floor after exposure to fire load, experimental study of post-fire bearing capacity of a profiled sheet-ceramsite concrete composite floor subjected to dead load, which has no shearing nails, is carried out here. Based on the experimental results, the post-fire bearing capacity of the composite floor after exposure to fire is analyzed. It is shown that the failure form of the profiled sheet-lightweight concrete composite floor after exposure to fire has obvious change compared with the floor not subjected to fire load, and the ultimate value of the equivalent distributed load applied to the top surface of the floor is up to 35 kN/m~2, which may be used as basis of strengthening and repairing of the profiled sheet-lightweight aggregate concrete composite floor after exposure to fire.