Basic Experiment on Concrete Crack of Steel and Concrete Composite Slab

Abstract

To observe ultimate state of steel and concrete composite slab, static load experiment was carried out for test models that were cut down a part of steel and concrete composite slab. As a result, it was recognized that starting point of concrete crack is top of steel rib.
On this paper, it is proposed that nonlinear FEM analysis applied to steel and concrete composite slab needs to include material and boundary nonlinear characteristics. By results of comparing this experiment with proposed analysis way, the analysis could create concrete frist crack confirmed in this experiment. And, application limit of the analysis is turned out.