Extended Timoshenko layered beam element for nonlinear analysis of RC high-rise buildings with structural walls

It has been shown that three-vertical-line element and multiple-vertical-line element are essentially a kind of Timoshenko layered beam element (here it is called extended Timoshenko layered beam element). In this paper the element model is discussed further. First, the element stiffness matrix and inner force formula are presented, then the performance of modeling the axial-bending and shear is discussed; next the improvement suggestions to Kabeyasawa's tension-compress hysteretic curve are proposed, based on experiment results; finally, two analysis examples show the effectiveness of the model.