江浙地区早期传统木构建筑典型榫卯节点受力性能试验研究
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摘要
对江浙地区早期传统木构建筑中常用的镊口鼓卯、双榫和单榫在低周反复荷载作用下的受力性能进行了研究。通过试验获取该3种榫卯节点在低周反复荷载作用下的破坏模式、滞回曲线、骨架曲线、转角刚度、延性系数及耗能能力。结果表明:3种榫卯节点的滞回曲线基本上都呈Z形,具有明显的捏拢特性。该3种榫卯试件均经历了弹性阶段、屈服阶段和破坏阶段。对于极限转角、弹性刚度和延性系数而言:镊口鼓卯大于双榫,双榫大于单榫。耗能能力总体随着节点转角的增大而减小,镊口鼓卯的耗能能力大于双榫的耗能能力,双榫的耗能能力大于单榫的耗能能力。研究结果可为江浙地区早期传统木构建筑的计算分析及保护修缮提供理论基础。
The mechanical properties of the typical mortise-tenon joints of the ancient traditional timber buildings in Jiangsu and Zhejiang are studied. The tested mortise-tenon joints include one niekou gumao mortise-tenon joint,one double mortise-tenon joint and one single mortise-tenon joint. The failure modes,the hysteretic curves,the skeleton curves,the rotation rigidities,the ductility factors,and the energy dissipation capacity of these three kinds of mortise-tenon joints under low cyclic loading are obtained. The results show that the hysteretic curves of the niekou gumao mortise-tenon joint joint,the double mortise-tenon joint and the single mortise-tenon joint appear to be the Z shape and have the obvious pinch effects. During the process of the test,the mortise-tenon joints orderly pass through the elastic stage,the yield stage and the failure stage. In terms of ultimate rotation,elastic rotation rigidity and ductility factor,the descending order is: niekou gumao mortise-tenon joint,double mortise-tenon joint,single mortise-tenon joint. The energy dissipation capacity of the mortise-tenon joints decreases with the increase of joint rotation. The sort of energy dissipation capacity in descending order is: niekou gumao mortise-tenon joint,double mortise-tenon joint,single mortise-tenon joint. The results can provide the theoretical base for computing analysis and repair design of these traditional timber buildings.
The mechanical properties of the typical mortise-tenon joints of the ancient traditional timber buildings in Jiangsu and Zhejiang are studied. The tested mortise-tenon joints include one niekou gumao mortise-tenon joint,one double mortise-tenon joint and one single mortise-tenon joint. The failure modes,the hysteretic curves,the skeleton curves,the rotation rigidities,the ductility factors,and the energy dissipation capacity of these three kinds of mortise-tenon joints under low cyclic loading are obtained. The results show that the hysteretic curves of the niekou gumao mortise-tenon joint joint,the double mortise-tenon joint and the single mortise-tenon joint appear to be the Z shape and have the obvious pinch effects. During the process of the test,the mortise-tenon joints orderly pass through the elastic stage,the yield stage and the failure stage. In terms of ultimate rotation,elastic rotation rigidity and ductility factor,the descending order is: niekou gumao mortise-tenon joint,double mortise-tenon joint,single mortise-tenon joint. The energy dissipation capacity of the mortise-tenon joints decreases with the increase of joint rotation. The sort of energy dissipation capacity in descending order is: niekou gumao mortise-tenon joint,double mortise-tenon joint,single mortise-tenon joint. The results can provide the theoretical base for computing analysis and repair design of these traditional timber buildings.
引文
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[2]高大峰.中国木结构古建筑的结构及其抗震性能研究[D].西安:西安建筑科技大学,2007Gao Dafeng.A Research on the Structure and Their Aseismatic Characteristics of Ancient Chinese Timber Buildings[D].Xi’an:Xi’an University of Architecture and Technology,2007(in Chinese)
[3]高大峰,赵鸿铁,薛建阳,等.中国古建木构架在水平反复荷载作用下变形及内力分析[J].世界地震工程,2003,19(1):9-14Gao Dafeng,Zhao Hongtie,Xue Jianyang,et al.The Deformational and Stress Behavior of Wooden Frame of Chinese Ancient Buildings under Horizontally Reverse Load[J].World Earthquake Engineering,2003,19(1):9-14(in Chinese)
[4]周乾,闫维明,周锡元,等.古建筑榫卯节点抗震性能试验[J].振动、测试与诊断,2011,31(6):679-684Zhou Qian,Yan Weiming,Zhou Xiyuan,et al.Aseismic Behavior of Chinese Ancient Tenon-mortise Joint[J].Journal of Vibration,Measurement&Diagnosis,2011,31(6):679-684
[5]周乾,闫维明,关宏志,等.故宫太和殿减震构造分析[J].福州大学学报(自然科学版),2013,41(4):652-657Zhou Qian,Yan Weiming,Guan Hongzhi,et al.Analysis of Aseismic Constitutions of Tai-he Palace in the Forbidden City[J].Journal of Fuzhou University(Natural Science Edition),2013,41(4):652-657(in Chinese)
[6]李鹏.藏式古建筑木构架梁柱节点力学机理研究[D].北京:北京交通大学,2009Li Peng.Mechanical Performance of Beam-column Joints of Tibetan Ancient Timber Buildings[D].Beijing:Beijing Jiaotong University,2009(in Chinese)
[7]肖旻,陈庆军,张增球,等.考虑节点刚度影响的典型广府木祠堂安全性分析[J].昆明理工大学学报(自然科学版),2014,39(1):40-47Xiao Min,Chen Qingjun,Zhang Zengqiu,et al.Safety Analysis of Typical Wood Ancestral Hall in Caton Considering Joint Stiffness[J].Journal of Kunming University of Science and Technology(Natural Science Edition),2014,39(1):40-47(in Chinese)
[8]Chun Qing,Yue Zhi,Pan Jianwu.Experimental Study on Seismic Characteristics of Typical Mortise-tenon Joints of Chinese Southern Traditional Timber Frame Buildings[J].Science in China,2011,7(54):1-8
[9]Villar J R,Guaita M,Vidal P,Arriaga F.Analysis of the Stress State at the Cogging Joint in Timber Structures[J].Biosystems Engineering,2007,(1):79-90
[10]Dina F D Ayala,,Pin Hui Tsai.Seismic Vulnerability of Historic Dieh-Dou Timber Structures in Taiwan[J].Engineering Structures,2008,(30):2101-2113
[11]李忠献.工程结构试验理论与技术[M].天津:天津大学出版社,2003Li Zhongxian.Theory and Technique of Engineering Structure Experiment[M].Tianjin:Tianjin University Press,2003(in Chinese)
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