四柱传统摇摆木构架恢复性的试验研究  

Experimental Study on Restorability of Traditional Rocking Timber Frame with Four Columns

作　　者：陈亚茜 牛庆芳[1] 魏剑伟[1] 李铁英[1] CHEN Yaxi;NIU Qingfang;WEI Jianwei;LI Tieying(College of Civil Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学土木工程学院,太原030024

出　　处：《太原理工大学学报》2023年第3期482-489,共8页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(51338001,51278324);山西省自然科学基金资助项目(20210302123140)。

摘　　要：为了探究宋式传统摇摆木构架的结构受力特征,对1∶2宋式四柱四梁木构架缩尺模型进行了水平低周往复试验,基于滞回曲线、骨架曲线、刚度退化曲线的变化特征,采用滞回环屈服刚度、位移恢复系数和层间位移集中系数探究其恢复性。结果表明:各狭长S型带状滞回环具有相似性,其等效刚度退化显著;水平位移超过屈服位移后,滞回环屈服刚度趋于整体屈服刚度;位移恢复系数介于0.6~0.8之间,木构架具有良好的位移恢复能力;木构架的层间位移集中系数在1.08~1.65之间,水平变形集中在柱架层,柱架层是木构架恢复性的来源。研究成果是建立传统木构架理论分析模型的基础,可为现存古建筑木结构的现状评估以及加固修缮提供参考。In order to explore the structural stress characteristics of rocking timber frame in Song Dynasty,the scale model of 1∶2 Song-style four-column four-beam wood frame was tested by horizontal low-cycle reciprocating test.On the basis of the change characteristics of hysteresis curve,skeleton curve,and stiffness degradation curve,the yield stiffness of hysteresis loop,recovery coefficient of displacement,and inter-story displacement concentration factor were used to explore the recoverability of timber frame.The results show that the narrow S-shaped band hysteretic loops are similar,and their equivalent stiffness values degrade significantly.When the horizontal displacement exceeds the yield displacement,the yield stiffness of hysteresis loop approaches overall yield stiffness;The displacement recovery coefficient is between 0.6 and 0.8,and the timber frame has good displacement recovery ability.The inter-story displacement concentration coefficient of the timber frame is between 1.08 and 1.65,and the horizontal deformation is concentrated in the column frame layer,which is the source of timber frame resilience.The research results are the basis of establishing the theoretical analysis model of traditional timber frame,and can provide reference for the current situation evaluation and reinforcement and repair of existing ancient wooden structures.

关 键 词：中国传统木构架 抗震性能 摇摆木构架 位移恢复性 

分 类 号：TU366.2[建筑科学—结构工程]