The damage of traditional Chinese timber structure buildings is mainly caused by the loosening,deformation and pulling out of mortise and tenon joints.Aiming at the problems of easy loosening,deformation and tenon failure of mortise and tenon joints,the joint damper technology is introduced,and the fan-shaped shear damper is installed at the mortise and tenon joints of traditional wooden structure buildings.In order to study the seismic performance and strengthening effect of the typical joints of traditional timber structures after the installation of dampers,six dovetail tenon joint models were designed and manufactured,of which three mortise and tenon joints were not installed with dampers,and three mortise and tenon joints were installed with dampers.The hysteretic response,skeleton curve,stiffness degradation curve and equivalent viscous damping coefficient curves of the six test models were studied by low cycle repeated loading tests.The results show that the installation of dampers can effectively control the tenon failure of the joints;at the same time,the energy consumption,strength and stiffness of thejoints are effectively enhanced.The ultimate bearing capacity of the damper models is 1.5～3.5 times that of the models without damper.
关键词
大头榫节点/抗震性能/阻尼器/低周反复加载试验
Key words
dovetail mortise-tenon joint/seismic performance/damper/low cycle repeated loading test
维普
万方数据