Rammed earth-timber joints without enlarged ends have been used in rammed earth buildings for several hundreds of years. Due to the embedment nature, the joint has a certain degree of flexibility, allowing the floor and roof beams to slide without damaging the rammed earth, enabling dissipating energy during earthquakes. The energy dissipation mechanism of rammed earth-timber joint has not yet been fully understood. This study studied the energy dissipation characteristic of eight rammed earth-timber joint specimens via cyclic pull-out/push-in experiments, investigating the effects of compressive loading, embedment length, and surface roughness on joint performance. Results show that the joint stiffness under cyclic loading was reduced nonlinearly with the increase of pull-out displacement until the occurrence of slippage. The high vertical compression from the upper level, the deformability of timber frames, and the plasticity of rammed earth were found to be the primary energy dissipators. A linear frictional and nonlinear geotechnical hysteretic model, combining frictional and soil mechanics theories, was established to represent the joint behavior. In addition, a simplified multi-linear hysteretic model was developed for the same purpose. The predictions and the measurements had good agreement, suggesting that geotechnical methods should be employed to analyze the joint, maintaining the assumption that both the timber frame and the rammed earth are linear-elastic.

没有夯实末端的夯土-木材接头已在夯土建筑中使用了数百年。由于具有嵌入特性，因此接头具有一定程度的柔韧性，可以使地板和车顶梁滑动而不会损坏夯土，从而能够在地震过程中消散能量。夯土-木材接头的耗能机理尚未完全了解。这项研究通过循环拉拔/推入实验研究了8个夯实的木材-木材关节标本的能量耗散特性，研究了压缩载荷，包埋长度和表面粗糙度对关节性能的影响。结果表明，循环载荷作用下的节点刚度随着拉拔位移的增加而非线性降低，直至发生滑移。高层的垂直压缩，木构架的可变形性以及夯土的可塑性被认为是主要的消能器。建立了结合摩擦和土壤力学理论的线性摩擦非线性非线性土工滞回模型，以表示节点的行为。此外，出于相同的目的，还开发了简化的多线性滞后模型。预测结果与实测结果吻合良好，表明应采用岩土工程方法对接缝进行分析，并保持木构架和夯土均为线弹性的假设。建立了结合摩擦和土壤力学理论的线性摩擦非线性非线性土工滞回模型，以表示节点的行为。此外，出于相同的目的，还开发了简化的多线性滞后模型。预测结果与实测结果吻合良好，表明应采用岩土工程方法对接缝进行分析，并保持木构架和夯土均为线弹性的假设。建立了结合摩擦和土壤力学理论的线性摩擦非线性非线性土工滞回模型，以表示节点的行为。此外，出于相同的目的，还开发了简化的多线性滞后模型。预测结果与实测结果吻合良好，表明应采用岩土工程方法对接缝进行分析，并保持木构架和夯土均为线弹性的假设。