Inelastic Behavior of Steel Members with Hollow Circular Section under Combined Bending and Torsional Load

摘要

An advanced plastic hinge method for steel members with hollow circular section is presented in this paper. This method uses the tangent coefficient matrix obtained by the numerical integration about the member section to calculate the generalized plastic strain increments. The effect of the shear stress due to torsional load is considered in the procedure. The accuracy of the stiffness matrix is examined by some numerical examples.