Analytic Solutions of Shear Lag on Steel-Concrete Composite T‐girder under Simple Bending

Abstract

Abstract:The composite T-girders include concrete flange plates and steel beams, which are connected by shear connectors. The longitudinal stress about concrete plate is due to non-uniform distribution on cross section because of the shear lag effect. A differential equation of longitudinal forces at transverse section flange and cantilever flange is separately established according to the strain compatibility and the force equilibrium conditions about a composite Tgirder. The method of separation of variables is used to solve the differential equation about the simply supported composite T-girder. The shear lag coefficient is detrmined by the ratio between stress calculated by this method and stress odetrmined by elementary beam theory. An example of such calculation is given to approve its applicability.

The Research of Box Beam Warping Displacement Function

“…In order to more intuitive understanding of the Impact of the power of parabolic on The shear lag effect and Obtain a conclusion of this article,I analysis of the model in the literature [5,6].The model we Producted is shown in figure 2. Span 800 mm, the total width of 400 mm, the concentrated load of 272.2 N, modulus of elasticity E = 3000 Mpa, the Poisson's ratio u = 0.385,…”