古建筑木结构透榫节点地震损伤演化模型研究  

Study on earthquake damage evolution model of through⁃mortise joints in ancient wooden structures

作　　者：李加旭 白福玉[1,2] 王应生 薛建阳[1] LI Jiaxu;BAI Fuyu;WANG Yingsheng;XUE Jianyang(School of Civil Engineering,Xi’an University of Architecture&Technology,Xi’an 710055,China;XAUAT Engineering Technology Co.,Ltd,Xi’an 710055,China)

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]西安建筑科大工程技术有限公司,西安710055

出　　处：《建筑结构》2024年第12期146-152,共7页Building Structure

基　　金：国家自然科学基金青年基金项目(51908454)。

摘　　要：为定量评估古建筑木结构透榫节点的地震损伤程度与地震损伤演化过程,对Kratzig地震损伤模型进行了改进。分别基于刁波地震损伤模型、Kratzig地震损伤模型以及改进的Kratzig地震损伤模型对3组透榫节点进行了地震损伤分析,研究了3种模型的适用性。为了对实际工程中的透榫节点松动进行地震损伤评估,基于改进的Kratzig地震损伤模型,考虑了节点松动对改进的Kratzig地震损伤模型的影响。结果表明:改进的Kratzig地震损伤模型在描述透榫节点地震损伤中表征效果最好,能够克服地震损伤模型与Kratzig地震损伤模型的不足;随着松动程度的增大,透榫节点损伤指数增长减缓,最终破坏时损伤指数减小。最后根据国内抗震设防规范,结合古建筑木结构地震损伤评估,提出了透榫节点性能水准分类及每个阶段的加固建议。In order to quantitatively evaluate the earthquake damage degree and earthquake damage evolution process of through-mortise joints in ancient wooden structures,the Kratzig earthquake damage model was improved.Based on the Diaobo earthquake damage model,Kratzig earthquake damage model and the improved Kratzig earthquake damage model,the earthquake damage analysis of three groups of through-mortise joints was carried out,and the applicability of the three models was studied.In order to evaluate the earthquake damage of through-mortise loosening in practical engineering,the influence of through-mortise loosening based on the improved Kratzig earthquake damage model was considered.The results show that the improved Kratzig earthquake damage model has the best description of earthquake damage of through-mortise joints,and can overcome the deficiency of Diaobo earthquake damage model and Kratzig earthquake damage model.With the increase of the degree of loosening,the damage index of the through-mortise joint increases slowly,and the damage index decreases at the final failure.Finally,according to the domestic seismic fortification code,and considering the earthquake damage assessment of ancient wooden structure,the performance level classification of through-mortise joint and the suggestions for strengthening in each stage were put forward.

关 键 词：古建筑木结构 透榫节点 地震损伤模型 性能水准分类 节点加固 

分 类 号：TU366.2[建筑科学—结构工程]