Finite element analysis of seismic performance of mortise-tenon wooden frame structures with energy-absorbing assembly joints
A beam-column energy-consuming assembly joint for mortise-tenon wooden frames is proposed to address the defects of conventional beam-column mortise-tenon joints.Finite element models were developed using ABAQUS software to investigate the influence of these energy-consuming assembly joints on the seismic performance of wooden frames.The models represent three different types of mortise-tenon wooden frames:with all-steel energy-consuming assembly joints,with rubber flexible energy-consuming assembly joints,and with original mortise-tenon joints.Through monotonic loading and low cyclic loading analyses,the mechanical properties of the three mortise-tenon wooden frame models were examined,focusing on failure characteristics,hysteresis curves,skeleton curves,bearing capacity,and energy-consuming capacity.In addition,the seismic performances were evaluated using capacity and demand spectrum curves with per-formance points to analyze the three frame types.Results indicate that,compared with the origi-nal mortise-tenon wooden frame,the energy-consuming assembly joint effectively adjusts and controls the failure mode of the wooden frame,enhancing the nonlinear mechanical properties of the beam-column joints and evidently improving the overall seismic performance of the mortise-tenon wooden frames.
万方数据
维普
