(1 江苏科技大学土木工程与建筑学院， 镇江 202100；2 凯里学院建筑工程学院， 凯里 556011)

［摘要］西南传统民居主要为榫卯连接的木结构，穿销透榫连接方式是其主要连接方式之一，为了研究西南地区木结构中的穿销透榫节点力学性能，以实际工程为例设计了两个足尺节点并进行节点弯曲的单调加载试验，获得节点的弯矩-转角曲线、拔榫量-转角曲线和弯矩-应变曲线，并观察节点的失效形态。研究发现穿销透榫节点在单调加载的情况下，其弯矩-转角曲线大致为弹性受力阶段、塑性发展阶段，节点破坏主要为木材的局部压缩导致节点变形过大而失去承载能力。在试验基础上，建立穿销透榫节点单调加载下的理论模型，推导出节点的理论公式，并运用有限元软件对节点单调加载抗弯性能进行数值模拟分析，将理论模型、试验数据和数值模拟进行比较，三者吻合度较好。 

［关键词］木结构；穿销透榫；双折线模型；抗弯性能 

中图分类号：TU366-2 文献标识码：A文章编号：1002-848X(2021)18-0112-06

Research on flexural behavior of tenon joint with penetrating pin for residential buildings in Southwest China 

SHI  Ang1,  WANG  Zhanguang2,  WANG  Tingting2,  SHAO  Jianhua2 

(1 School of Civil Engineering and Architecture，Jiangsu University of Science and Technology, Zhenjiang 202100，China；2 College of Architectural  Engineering，Kaili University, Kaili 556011，China) 

Abstract: Traditional residential buildings in Southwest China are mainly made of timber structures with tenon and mortise joints. The connection method of tenon joint with penetrating pin is one of its main connection methods. In order to study the mechanical properties of tenon joint with penetrating pin in timber structures in Southwest China, two full-scale joints were designed with actual engineering as an example, and the joints were bent to monotone loading tests. Experiments were performed to obtain the bending moment-rotation curve, the tenon amount-rotation curve and the bending moment-strain curve of the joint, and the failure mode of the joint was observed. The study finds that under the condition of unidirectional loading, the bending moment-angle curve of the tenon joint with penetrating pin is roughly in the elastic stress stage and the plastic development stage. The damage of the joint is mainly caused by the local compression of the timber, which causes the joint to deform too much and lose the bearing capacity. On the basis of the test, a theoretical model of the tenon joint with penetrating pin under one-way loading was established, and the theoretical formula of the joint was deduced, and the finite element software was used to perform numerical simulation analysis on the flexural behavior of the joint under one-way loading, and the theoretical model, experimental data and numerical simulation were compared to find that the agreement of the three is good. 

Keywords:timber structure； tenon joint with penetrating pin； double broken line model； flexural behavior

*贵州省教育厅创新群体重大研究项目(黔教合KY字［2017］048)，贵州省科技计划项目(黔科合LH字［2019］1288号)。

 作者简介：石昂，硕士研究生，Email： 1050657842@qq.com； 通信作者：王展光，博士，教授，Email:wzg3262396@163.com。