Analysis of Flexural Performance of Steel-timber Composite Cantilever Beam

Abstract

Steel-timber composite member is a new kind of structural member composed of steel plates and planks which are connected by bolts. The finite element analysis results on the flexural behavior of steel-timber composite centilever beam show that the stress of steel plate exceeds the yield strength before the bearing capacity of the composite beam is lost. Under the premise of ensuring the yield of the steel plate, the increase in the thickness of plank has little effect on the in-plane bending stiffness of composite beam, and the lateral bending stiffness of the composite beam is obviously improved which means the plank can effectively restrain the lateral buckling of the core steel plate. Based on the deflection analysis of composite beams, the deflection coefficient of steel-timber composite is derived.