According to the virtual work principle for the static analysis of the reinforced concrete(RC)beam,the differential equations and their boundary conditions governing the static response are derived,taking into account the nonlinear properties of the rebar and concrete and the shearing deformation of the beam body.Subsequently,a nonlinear boundary value problem composed of 6 first order ordinary differential equations is obtained,thus,the static behavior of the RC beam is studied using the nonlinear shooting method,and the responses of displacements and bending moment of the RC beam are obtained.At the end,via the comparisons of results generated by Timoshenko and Euler-Bernoulli beam models,the correctness of the analysis is verified,and the shear effect of the RC beam is parametrically studied.Besides,the bending moment modulation coefficient of the nonlinear RC beam is gained,and the crack zone of the RC beam are obtained through the normal stress analysis.