马口铁加固古建筑榫卯节点抗震试验
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摘要
为保护古建筑,采用试验方法,研究了马口铁加固古建筑榫卯节点后对节点抗震性能的影响。基于故宫太和殿三次间结构原型,制作了1:8缩尺比例的木结构空间框架模型,并考虑梁柱连接为燕尾榫形式,进行了低周反复加载试验,其中未加固构架和马口铁加固构架试验各做了3组。基于试验相关数据,获得了节点的弯矩-转角滞回曲线和骨架曲线,并对比分析了节点加固前后的耗能能力,刚度退化和延性等抗震指标。结果表明:马口铁加固榫卯节点后,虽然节点耗能能力略有下降,但节点拔榫量减小,抗弯承载力提高,刚度退化不明显,且节点仍具有较好的变形能力。因此,马口铁具有较好的加固效果。
To protect Chinese ancient architecture,the aseismic behavior of ancient Chinese architecture having ion - hook strengthened mortise - and - tenon joints was studied experimentally.Based on the three frame structure of Tai - He Palace in the Forbidden City,three wooden frame models were made on a 1/8 scale.The models were built using Yan - wei(swallow tail) type of mortise - and - tenon connections.Low - cycle reversed loading tests were used to get moment - rotation hysteretic curves and skeleton curves for the joints.The energy dissipation capability, stiffness degradation and deformation performance were also studied.The results showed that after the joint was strengthened with an iron-hook,although the energy dissipation capability of the joint decreased slightly,the chance that the embedded tenon pulled out of mortise also decreased,the stiffness and strength of the joint was enhanced, stiffness degradation of the joint was not obvious,and the joint had good ductility.Thus,iron - hook is good for strengthening mortise - and - tenon joints in Chinese ancient architecture.
To protect Chinese ancient architecture,the aseismic behavior of ancient Chinese architecture having ion - hook strengthened mortise - and - tenon joints was studied experimentally.Based on the three frame structure of Tai - He Palace in the Forbidden City,three wooden frame models were made on a 1/8 scale.The models were built using Yan - wei(swallow tail) type of mortise - and - tenon connections.Low - cycle reversed loading tests were used to get moment - rotation hysteretic curves and skeleton curves for the joints.The energy dissipation capability, stiffness degradation and deformation performance were also studied.The results showed that after the joint was strengthened with an iron-hook,although the energy dissipation capability of the joint decreased slightly,the chance that the embedded tenon pulled out of mortise also decreased,the stiffness and strength of the joint was enhanced, stiffness degradation of the joint was not obvious,and the joint had good ductility.Thus,iron - hook is good for strengthening mortise - and - tenon joints in Chinese ancient architecture.
引文
[1]石志敏,周乾,晋宏逵.故宫太和殿木构件现状分析及加固方法研究[J].文物保护与考古科学,2009,21(1):15-21. SHI Zhi - min,ZHOU Qian,JIN Hong - kui.Studv on mechanical problems and strengthening methods on some components of the Taihe Palace in the Palace Museum[J].Sci Conserv Archaeol, 2009,21(1):15-21.
[2]谢启芒,赵鸿铁,薛建构中国古建筑木结构榫卯节点加固的试验研究[J].土木工程学报,2008,41(1):28-34. XIE Qi - fang,ZHAO Hong - tie,XUE Jian - yang.An experimental study on the strengthening of mortise - tenon joints in ancient Chinese wooden buildings[J].China Civil Kng J,2008,41(1 ): 28-34.
[3]于业栓,薛建阳,赵鸿铁.碳纤维布及扁钢加固古建筑榫卯节点抗震性能试验研究[J].世界地震工程,2008,24(3):112- 17. YU Ye - shuan,XUF.Jian - yang.ZHAO Hong - lie.Experimental study on seismic behavior of mortise - tenon joints ol Chinese ancient wooden building strengthened with CFRP sheets and Hat steel[J].World Farth Eng.2008,24(3 ):112 - 117.
[4]廖伟发.台湾传统建筑直榫木接头补强之力学行为[D].台北:台北科技大学,2007:15-20. LIAO Wei - fa.Mechanical behavior of retrofitted Taiwan traditional tenon and mortise wood joints[D].Taipei:Taipei University of Technology,2007:l5-20.
[5]周乾,闫维明,杨小森.汶川地震古建筑轻度震害研究[J].工程抗震与加固改造,2009,31(5):101-107. ZHOU Qian,VAN Wei - ming,VAHN Xiao - sen.Study on slight damage of a strengthened Chinese ancient bnililing under wenchnan earthqnake[J].Karth Resistant Fng Retrofit,2009,31(5):101 - 107.
[6]王璞子工程做法注释[M].北京:中国建筑工业出版社,1995: 73-79. W ANG Pu-zi.Annotation of building codes in Qing Dynasty[M]. Beijing:China Architecture & building Press,1995:73 -79.
[7]葛鸿鹏中国古代木结构建筑榫卯加固抗震试验研究[D]西安:西安建筑科技大学,2004,31-33. GE Hong - pcng.Kxperirnental study on seismic hehavior of Chinese ancient wooden building with strengthened mortise - tenon [D].Xi'An:Xi'An University of Architecture and Technology, 2004:31 -33.
[8]李忠献.工程结构试验理论与技术[M].天津:天津大学出版社,2003:232-233, LI Zhong - xian.Theory and technique ol engineering struiture and structure experiments[M].Tianjin:Tianjin University Press,2003: 232-233.
[9]姚侃,赵鸿铁,葛鸿鹏.古建木结构榫卯连接特性的试验研究[J].工程力学,2006,23(10):168-172 YAO Kan,ZHAO Hong-tie,GK Hong - peng.Experimental studies on the characteristic of mortise - tenon joint in the historic timber buildings[J].Eng Mech,2006,23{ 10):168 - 172.
[2]谢启芒,赵鸿铁,薛建构中国古建筑木结构榫卯节点加固的试验研究[J].土木工程学报,2008,41(1):28-34. XIE Qi - fang,ZHAO Hong - tie,XUE Jian - yang.An experimental study on the strengthening of mortise - tenon joints in ancient Chinese wooden buildings[J].China Civil Kng J,2008,41(1 ): 28-34.
[3]于业栓,薛建阳,赵鸿铁.碳纤维布及扁钢加固古建筑榫卯节点抗震性能试验研究[J].世界地震工程,2008,24(3):112- 17. YU Ye - shuan,XUF.Jian - yang.ZHAO Hong - lie.Experimental study on seismic behavior of mortise - tenon joints ol Chinese ancient wooden building strengthened with CFRP sheets and Hat steel[J].World Farth Eng.2008,24(3 ):112 - 117.
[4]廖伟发.台湾传统建筑直榫木接头补强之力学行为[D].台北:台北科技大学,2007:15-20. LIAO Wei - fa.Mechanical behavior of retrofitted Taiwan traditional tenon and mortise wood joints[D].Taipei:Taipei University of Technology,2007:l5-20.
[5]周乾,闫维明,杨小森.汶川地震古建筑轻度震害研究[J].工程抗震与加固改造,2009,31(5):101-107. ZHOU Qian,VAN Wei - ming,VAHN Xiao - sen.Study on slight damage of a strengthened Chinese ancient bnililing under wenchnan earthqnake[J].Karth Resistant Fng Retrofit,2009,31(5):101 - 107.
[6]王璞子工程做法注释[M].北京:中国建筑工业出版社,1995: 73-79. W ANG Pu-zi.Annotation of building codes in Qing Dynasty[M]. Beijing:China Architecture & building Press,1995:73 -79.
[7]葛鸿鹏中国古代木结构建筑榫卯加固抗震试验研究[D]西安:西安建筑科技大学,2004,31-33. GE Hong - pcng.Kxperirnental study on seismic hehavior of Chinese ancient wooden building with strengthened mortise - tenon [D].Xi'An:Xi'An University of Architecture and Technology, 2004:31 -33.
[8]李忠献.工程结构试验理论与技术[M].天津:天津大学出版社,2003:232-233, LI Zhong - xian.Theory and technique ol engineering struiture and structure experiments[M].Tianjin:Tianjin University Press,2003: 232-233.
[9]姚侃,赵鸿铁,葛鸿鹏.古建木结构榫卯连接特性的试验研究[J].工程力学,2006,23(10):168-172 YAO Kan,ZHAO Hong-tie,GK Hong - peng.Experimental studies on the characteristic of mortise - tenon joint in the historic timber buildings[J].Eng Mech,2006,23{ 10):168 - 172.
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