江南地区传统木构建筑单向箍头榫节点受力性能（英文）

Mechanical properties of monodirectional Gutou mortise-tenon joints of the traditional timber buildings in the Yangtze River region

为研究江南地区传统木构建筑中常见的单向箍头榫节点的受力性能,基于真实构造设计了3个单向箍头榫节点试件并通过试验获取了该种榫卯节点在低周反复荷载作用下的破坏模式、滞回曲线、骨架曲线、转角刚度及耗能能力.试验结果表明：该种榫卯节点的滞回曲线基本上都呈Z形,具有明显的捏拢特性.该种榫卯节点在低周反复荷载作用下从开始到破坏均经历了弹性阶段、屈服阶段和破坏阶段,其耗能能力总体随着节点转角的增大而减小,该种榫卯节点的等效黏滞阻尼系数基本在0.161-0.193之间.研究结果可为江南传统木构建筑的计算分析及保护修缮提供理论基础.

The mechanical properties of the monodirectional Gutou mortise-tenon joints of the ancient Chinese traditional timber buildings in the Yangtze River region were studied using the experimental method. Three monodirectional Gutou mortise-tenon joints were designed according to the actual configurations. The failure modes,the hysteretic curves,the skeleton curves, the rotation rigidities, and the energy dissipation capacity of this type of mortise-tenon joints under the low cyclic reversed loading were obtained. The results show that the hysteretic curves of the monodirectional Gutou mortise-tenon joints appear to be Z shape and have obvious pinch effects. During the process of the test,these mortisetenon joints pass orderly through the elastic stage,the yield stage and the failure stage. The energy dissipation capacity of these mortise-tenon joints generally decreases with the increase in the rotation angle. The equivalent viscous damping coefficients of the monodirectional Gutou mortise-tenon joints are between 0. 161 and 0. 193. The results can provide the theoretical base for the computing analysis and repair design of Chinese traditional timber buildings in the Yangtze River region.