RESEARCH AND VERIFICATION ON JOINT MODEL OF RC FRAME STRUCTURE IN OPENSEES

In order to study the numerical simulation method of the joints of reinforced concrete frame, numerical simulation is performed by using the Beam Column Joint element in the finite element software OpenSEES in this paper. Two principal factors have been investigated, including the inelastic shear behavior of concrete and the anchoring and slipping behavior of longitudinal reinforcement in the core area of joint. This element in OpenSEES is used to simulate a reinforced concrete side joint and five middle joints under low cyclic loading. The comparison of simulated result and experimental result indicates that the proposed model can be used efficiently in simulating the nonlinear response of joints.