装配式木框架结构消能节点拟静力试验研究
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摘要
消能节点装配式木框架结构体系是以Q235钢制成的消能节点将规格木材制成的梁、柱连接成具有较大抗侧刚度的延性框架体系。通过3个足尺消能节点的拟静力试验,研究了该节点的受力性能、破坏形态、滞回特性与耗能能力等。研究结果表明:在弹性工作阶段,消能节点将木梁、柱连接成具有较大抗侧刚度的框架体系;在非线性工作阶段,结构通过节点的塑性变形消耗外部输入结构的能量;破坏时结构变形主要集中在节点上,节点钢板达到屈服强度,而木构件处于弹性工作状态;节点的位移延性系数达到5左右,其等效阻尼比达0.2左右;装配式木框架结构消能节点具有良好的延性、耗能能力与减震效果。
An assembled timber frame structure can achieve good ductility and high lateral stiffness by connecting its timber columns and beams with energy dissipating joints made by Q235 steel.The mechanical performances,damage model,hysteresis loops,and energy dissipation were investigated in this research by quasi-static experiments on three full scale joints.The results indicate that the timber columns and beams can be connected to form an assembled frame with high lateral stiff frame at elastic stage.The input energy can be dissipated by the plastic deformation of the joints at nonlinear stage.The deformation of the structure will mainly concentrates at the joints when structural damage occurs.The timber members remain elastic while the joint steel plates yield.The maximum displacement ductility is about 5.The damping ratio of the joints can reach about 0.2.The joint proposed in this paper has excellent ductility,energy dissipation capacity and earthquake mitigation effect.
An assembled timber frame structure can achieve good ductility and high lateral stiffness by connecting its timber columns and beams with energy dissipating joints made by Q235 steel.The mechanical performances,damage model,hysteresis loops,and energy dissipation were investigated in this research by quasi-static experiments on three full scale joints.The results indicate that the timber columns and beams can be connected to form an assembled frame with high lateral stiff frame at elastic stage.The input energy can be dissipated by the plastic deformation of the joints at nonlinear stage.The deformation of the structure will mainly concentrates at the joints when structural damage occurs.The timber members remain elastic while the joint steel plates yield.The maximum displacement ductility is about 5.The damping ratio of the joints can reach about 0.2.The joint proposed in this paper has excellent ductility,energy dissipation capacity and earthquake mitigation effect.
引文
[1]黄东升,张志强,毛龙泉.汶川地震后绵竹、都江堰市房屋震害调查与分析[J].防灾减灾工程学报,2010,30(1):109-116.(Huang Dongsheng,ZhangZhiqiang,Mao Longquan.Investigation of buildingdamages in Mianzhu and Dujiangyan due to 5.12Wenchuan Earthquakes[J].Journal of DisasterPrevention and Mitigation Engineering,2010,30(1):109-116.(in Chinese))
[2]邢大鹏.现代木建筑技术及建筑表现[D].南京:东南大学,2005.(Xing Dapeng.The technique&expressions of wooden architecture[D].Nanjing:Southeast University,2005.(in Chinese))
[3]谢启芳,赵鸿铁,薛建阳,等.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 Qifang,Zhang Hongtie,XueJianyang,et al.An experimental study on thestrengthening of mortise-tenon joints in ancient Chinesewooden buildings[J].China Civil Engineering Journal,2008,41(1):28-34.(in Chinese))
[4]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):168-173.(Yao Kan,Zhao Hongtie,Ge Hongpeng.Experimental study on the characteristic of mortise-tenon joint in historic timber buildings[J].EngineeringMechanics,2006,23(10):168-173.(in Chinese))
[5]程海江.轻型木结构房屋抗震性能研究[D].上海:同济大学,2007.(Cheng Haijiang.Study on theseismic performances of light wooden-framed house[D].Shanghai:Tongji University,2007.(in Chinese))
[6]何敏娟,Frank Lam.北美轻型木结构住宅建筑的特点[J].结构工程师,2004(1):1-5.(He Mingjuan,Frank Lam.Properties of North America wood frameresidential constructions[J].Structural Engineers,2004(1):1-5.(in Chinese))
[7]陈松来,张盛东,王焕定,等.轻型木结构房屋侧向变形机理的现场试验研究[J].同济大学学报:自然科学版,2008,36(4):453-459.(Chen Songlai,Zhang Shengdong,Wang Huangding,et al.In situexperimental study of deformation mechanism underlateral loads for wood frame building[J].Journal ofTongji University:Natural Science,2008,36(4):435-459.(in Chinese))
[8]周爱萍,黄东升,张齐生.一种带消能节点的装配式民宅及其抗震性能研究[C]//吴智深,吴刚,丁幼亮,编.第四届结构工程新进展国际论坛论文集.北京:中国建筑工业出版社,2010:432-436.(ZhouAiping,Huang Dongsheng,Zhang Qisheng.Study onthe seismic performances of an assembly woodenstructure with energy dissipation joints[C]//Edited byWu Zhishen,Wu Gang,Ding Youliang.Proceedings ofthe Fourth International Forum on Advances inStructural Engineering.Beijing:China Architecture&Building Press,2010:432-436.(in Chinese))
[9]黄东升,周爱萍,苏毅.木或竹框架结构消能减震节点:国家发明专利,ZL 200810242536.9[P].2010-07-07.(Huang Dongsheng,Zhou Aiping,Su Yi.Energy dissipation joints for timber or laminated bamboostructures:an innovation patent of The Peoples’Republic of China:ZL 200810242536.9[P].2010-07-07.(in Chinese))
[10]GB 50011—2010建筑抗震设计规范[S].(GB50011—2010 Code for seismic design of buildings[S].(in Chinese))
[2]邢大鹏.现代木建筑技术及建筑表现[D].南京:东南大学,2005.(Xing Dapeng.The technique&expressions of wooden architecture[D].Nanjing:Southeast University,2005.(in Chinese))
[3]谢启芳,赵鸿铁,薛建阳,等.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 Qifang,Zhang Hongtie,XueJianyang,et al.An experimental study on thestrengthening of mortise-tenon joints in ancient Chinesewooden buildings[J].China Civil Engineering Journal,2008,41(1):28-34.(in Chinese))
[4]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):168-173.(Yao Kan,Zhao Hongtie,Ge Hongpeng.Experimental study on the characteristic of mortise-tenon joint in historic timber buildings[J].EngineeringMechanics,2006,23(10):168-173.(in Chinese))
[5]程海江.轻型木结构房屋抗震性能研究[D].上海:同济大学,2007.(Cheng Haijiang.Study on theseismic performances of light wooden-framed house[D].Shanghai:Tongji University,2007.(in Chinese))
[6]何敏娟,Frank Lam.北美轻型木结构住宅建筑的特点[J].结构工程师,2004(1):1-5.(He Mingjuan,Frank Lam.Properties of North America wood frameresidential constructions[J].Structural Engineers,2004(1):1-5.(in Chinese))
[7]陈松来,张盛东,王焕定,等.轻型木结构房屋侧向变形机理的现场试验研究[J].同济大学学报:自然科学版,2008,36(4):453-459.(Chen Songlai,Zhang Shengdong,Wang Huangding,et al.In situexperimental study of deformation mechanism underlateral loads for wood frame building[J].Journal ofTongji University:Natural Science,2008,36(4):435-459.(in Chinese))
[8]周爱萍,黄东升,张齐生.一种带消能节点的装配式民宅及其抗震性能研究[C]//吴智深,吴刚,丁幼亮,编.第四届结构工程新进展国际论坛论文集.北京:中国建筑工业出版社,2010:432-436.(ZhouAiping,Huang Dongsheng,Zhang Qisheng.Study onthe seismic performances of an assembly woodenstructure with energy dissipation joints[C]//Edited byWu Zhishen,Wu Gang,Ding Youliang.Proceedings ofthe Fourth International Forum on Advances inStructural Engineering.Beijing:China Architecture&Building Press,2010:432-436.(in Chinese))
[9]黄东升,周爱萍,苏毅.木或竹框架结构消能减震节点:国家发明专利,ZL 200810242536.9[P].2010-07-07.(Huang Dongsheng,Zhou Aiping,Su Yi.Energy dissipation joints for timber or laminated bamboostructures:an innovation patent of The Peoples’Republic of China:ZL 200810242536.9[P].2010-07-07.(in Chinese))
[10]GB 50011—2010建筑抗震设计规范[S].(GB50011—2010 Code for seismic design of buildings[S].(in Chinese))
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