【摘要】 通过对典型透榫和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连接节点恢复力模型,由试验结果给出了两种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。更多还原

【Abstract】 The low cyclical reversed loading tests were carried out on the typical mortise-tenon joints of historic timber buildings.The semi-rigid characteristic of the joggle joint and the change rules of stiffness degradation are obtained.The moment-deflection angle hysteretic curves and skeleton curve are tested.The formula between the moment-deflection and the angle are fitted by the skeleton curve.From the test result,It is shown that the stiffness change of the mortise-tenon joint is nonlinear.It also provides information,suggestions and theoretical base for seismic research,protection and maintenance of the historic timber buildings.更多还原