钢构件加固古建筑榫卯节点抗震试验
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摘要
为探讨古建筑榫卯节点的有效抗震加固方法,提出了一种钢构件加固方法.基于故宫太和殿某开间结构原型,制作了1∶8缩尺比例的木结构空间框架模型,考虑梁柱连接为燕尾榫形式,进行了低周反复加载试验,其中未加固构架试验进行了3组,加固试验进行了2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,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:钢构件加固榫卯节点后,节点拔榫量减小,抗弯承载力提高,刚度退化不明显,加固后的节点仍有较好的耗能能力和延性.因此钢构件具有良好的加固效果.
To find an effective strengthening method for Chinese ancient tenon-mortise joint,a form of steel components was brought up.According to a Chinese ancient wooden building,5 groups(3 unstrengthened and 2 strengthened by steel components on tenon-mortise joints)of 1∶ 8 scale wooden frame models were built considering swallow tail joint type.By manual loading means,low cyclic reversed loading tests were carried out.For each joint,its moment-rotation hysteretic curves and skeleton curves were obtained,its energy dissipation capability,stiffiness degradation as well as deformation performance were analysed.Results showed that after the joint was strengthened by steel components,its tenon pull value became less,its stiffness and strength were enhanced,its stiffness degradation was not obvious,and it still had good energy dissipation capability as well as ductility.Thus the strengthening method is effective.
To find an effective strengthening method for Chinese ancient tenon-mortise joint,a form of steel components was brought up.According to a Chinese ancient wooden building,5 groups(3 unstrengthened and 2 strengthened by steel components on tenon-mortise joints)of 1∶ 8 scale wooden frame models were built considering swallow tail joint type.By manual loading means,low cyclic reversed loading tests were carried out.For each joint,its moment-rotation hysteretic curves and skeleton curves were obtained,its energy dissipation capability,stiffiness degradation as well as deformation performance were analysed.Results showed that after the joint was strengthened by steel components,its tenon pull value became less,its stiffness and strength were enhanced,its stiffness degradation was not obvious,and it still had good energy dissipation capability as well as ductility.Thus the strengthening method is effective.
引文
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[10]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):112-117Yu Yeshuan,Xue Jianyang,Zhao Hongtie.Experimental study on seismic behavior of mortise-tenon joints of Chineseancient wooden building strengthened with CFRP sheets and flat steel[J].World Earthquake Engineering,2008,24(3):112-117
[2]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):15-21Shi Zhimin,Zhou Qian,Jin Hongkui.Study on mechanical problems and strengthening methods on some components ofthe Taihe Palace in the Palace Museum[J].Sciences of Conservation and Archaeology,2009,21(1):15-21
[3]谢启芳,赵鸿铁,薛建阳.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):28-34Xie Qifang,Zhao Hongtie,Xue Jianyang.An experimental study on the strengthening of mortise-tenon joints in ancientChinese wooden buildings[J].China Civil Engineering Journal,2008,41(1):28-34
[4]宾慧中,路秉杰.浅识宋材份制与清斗口制[J].安徽建筑,2003,(3):1-2Bin Huizhong,Lu Bingjie.Study on cai-fen rule in Song Dynasty and dou-kou rule in Qing Dynasty[J].AnhuiArchitecture,2003,(3):1-2
[5]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,2004Ge Hongpeng.Experimental study on seismic behavior of Chinese ancient wooden building with strengthened mortise-tenon[D].Xi’An:Xi’An University of Architec-ture and Technology,2004
[6]周乾,闫维明,李振宝,等.用于古建筑木结构中间跨榫卯节点的加固装置:中国,200920108277.0[P].2010-04-21Zhou Qian,Yan Weiming,Li Zhenbao,et al.A strengthening installation for tenon-mortise joint of middle span ofChinese ancient wooden building:China,200920108277.0[P].2010-04-21
[7]赵军,邱计划,高丹盈.钢纤维部分增强混凝土剪力墙延性及耗能性能试验研究[J].应用基础与工程科学学报,2010,18(6):940-949Zhao Jun,Qiu Jihua,Gao Danying.Experimental study of steel fiber partially reinforced concrete shear wall[J].Journalof Basic Science and Engineering,2010,18(6):940-949
[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,2003:232-233Li Zhongxian.Theory and technique of engineering structure and structure experiments[M].Tianjin:Tianjin UniversityPress,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):168-172Yao Kan,Zhao Hongtie,Ge Hongpeng.Experimental studies on the characteristic of mortise-tenon joint in the historictimber buildings[J].Engineering Mechanics,2006,23(10):168-172
[10]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):112-117Yu Yeshuan,Xue Jianyang,Zhao Hongtie.Experimental study on seismic behavior of mortise-tenon joints of Chineseancient wooden building strengthened with CFRP sheets and flat steel[J].World Earthquake Engineering,2008,24(3):112-117
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