木材科学与技术2025，Vol.39Issue(4)：59-67,9.DOI:10.12326/j.2096-9694.2025016
古建筑木结构松动透榫节点力学性能退化研究
Performance Degradation Research on Loosen Penetrated Mortise-Tenon Joints in Ancient Timber Architecture
摘要
Abstract
In order to study the mechanical properties of ancient timber architecture damaged mortise-tenon joints,loosen damage type was selection,and the degradation laws of the penetrated mortise-tenon joints was studied.Four transparent mortise-tenon joints with different loosen rates were designed,and the bending moment-angle hysteresis curves were obtained by applying low cyclic loads.Hysteresis characteristics,skeleton curves,strength degradation,bearing capacity and deformation performance were analyzed.The experimental results indicate that the bending failure occurs in all the joints.The hysteresis curve of the specimen is"Z"shape,and the pinching effect is significant.With the increase of control displacement,the strength of the specimen decreases significantly.With the increase of the loosen rate,the area surrounded by the hysteresis curve of the joint decreases,the energy dissipation capacity weakens,the ultimate bending moment decreases gradually,and the angle increases gradually.Based on experimental investigations,numerical simulation analysis of the mortise-tenon joints was conducted using ABAQUS software to examine the effects of loosen degree on their mechanical performance.The results demonstrate that with the progression of loosen degree,both the load-bearing capacity and lateral stiffness exhibit degradation.According to experimental research results,it is recommended to define a loosening degree of 5%～10%as the critical threshold range for reinforcement decision-making.关键词
古建筑木结构/透榫节点/性能退化/有限元模型/参数分析Key words
ancient timber architecture/through-tenon/performance degradation/FEM/parametric analysis分类
建筑与水利引用本文复制引用
刘渊长,李先旭,董金爽,李想..古建筑木结构松动透榫节点力学性能退化研究[J].木材科学与技术,2025,39(4):59-67,9.基金项目
国家重点研发计划专项"村镇装配式住宅生态化结构体系研究"(2019YFD1101003) （2019YFD1101003）
海南省自然科学基金项目"海南传统民居木结构地震灾变机制及结构性能提升关键技术研究"(520RC544) （520RC544）
企业委托横向课题"海垦建工集团建筑施工领域科研创新服务项目"(JZ-ZH-A-202411-003). （JZ-ZH-A-202411-003）
