中文摘要：

通过对典型燕尾榫榫卯连接的模型低周反复荷载试验，研究了榫卯半刚性连接特性和刚度退化规律．试验得出榫卯连接的弯矩-转角滞回曲线及骨架曲线，并拟合出了弯矩转角的关系方程和榫卯接节点恢复力模型，由实验结果给出了木结构榫卯连接刚度的非线性变化．研究结果为古建筑的抗震性能研究和修缮加固提供了理论基础．

英文摘要：

The low cyclic reversed loading tests were carried out on the typical mortise-tenon joints of historic timber build ings. The semi-rigid characteristic of the joggle joint and the change rules of stiffness degradation were obtained. The moment-deflection angle hysteretic curves and skeleton curve were tested. The formula between the moment deflection and the angle were fitted by the skeleton curve. As a result of the test, the stiffness change of the mortise-tenon joint proved to be nonlinear. It also provides information, suggestions and theoretical base for seismic research, protection and maintenance of historic timber buildings.