This paper focuses on the effect of the decay damage of the ancient timber building (ATB) with the one-way straight mortise-tenon (OWSMT) joints on the seismic performance of the wood frame (WF). The artificial damage simulation method was used to consider the varying degrees of damage to OWSMT joints considering the damage depth and surface damage of the mortise. Three damaged WFs with three different joints damage and a non-damaged WF were made according to the Song Dynasty's Construction Formula. The scale of reduction was 1:3.52.

Moreover, they have carried out low-cycle loading tests on the four WFs, compared and analyzed the strain variation characteristics at the edge of the OWSMT joints. Besides, the study discussed the hysteretic features, stiffness degradation, and energy dissipation capacity of the WF. The results show that the damage depth of mortise has a more significant impact on the seismic performance of the WF.

本文着眼于单向笔直榫接（OWSMT）接头对古代木结构建筑（ATB）的衰减破坏对木结构（WF）的抗震性能的影响。考虑到榫眼的损伤深度和表面损伤，使用人工损伤模拟方法来考虑对OWSMT接头的损伤程度。根据宋代的施工公式，制造了三处受损的WF，其中三个关节受到不同的损坏，而WF则未受损。减少比例为1：3.52。

此外，他们对四个WF进行了低周载荷测试，比较并分析了OWSMT接头边缘的应变变化特征。此外，研究还讨论了WF的滞后特性，刚度降低和能量耗散能力。结果表明，榫眼的破坏深度对WF的抗震性能影响更大。