不同松动程度下古建筑燕尾榫节点残损评估方法研究
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摘要
参照《清式营造则例》,制作了5个缩尺比为1∶3.2的燕尾榫节点试件,并进行了低周反复荷载试验;根据试验结果,提出了基于抵抗破坏潜能、松动程度和抵抗破坏潜能双参数的两种残损评估方法。研究结果表明:试件的破坏形态主要表现为榫头的拔出,卯口木材纤维的翘起,随着节点松动程度的增加,滞回环捏拢效应越来越明显;基于抵抗破坏潜能的残损评估仅考虑了单因素对燕尾榫节点残损的影响,未考虑松动程度的影响,对节点的残损评估不够全面,且其结果离散性较大;而基于松动程度和抵抗破坏潜能的双参数残损评估方法,考虑了松动程度和抵抗破坏潜能对节点残损的影响,更加全面和合理。
Five dovetail joint specimens with scale ratio of 1∶3.2 were produced by reference to Construction Examples of Qing Dynasty,and low-cycle repeated loading experiment was carried out.Based on experimental results,two different damage assessment methods are proposed in this paper,including destruction-resistance-potential-based and double parameters of level of looseness and destruction-resistance-potential-based,respectively.Results indicate that the main failure form of specimen is pulling out of dovetail joint,and the wood fiber is warped.With the increase of joint loosening degree,the effect of hysteresis ring pinch becomes more and more obvious.The single factor of influence was considered in damage assessment methods of destruction-resistance-potentialbased to evaluate the damage of the joints.The results are very discrete and the influence of looseness is not considered.Therefore,the damage assessment is not comprehensive. While the damage assessment method of loose degree and destruction-resistance-potential-based has considered the effect of both loose degree and destruction-resistance-potential on damage of joints,and the method is comprehensive and reasonable.
Five dovetail joint specimens with scale ratio of 1∶3.2 were produced by reference to Construction Examples of Qing Dynasty,and low-cycle repeated loading experiment was carried out.Based on experimental results,two different damage assessment methods are proposed in this paper,including destruction-resistance-potential-based and double parameters of level of looseness and destruction-resistance-potential-based,respectively.Results indicate that the main failure form of specimen is pulling out of dovetail joint,and the wood fiber is warped.With the increase of joint loosening degree,the effect of hysteresis ring pinch becomes more and more obvious.The single factor of influence was considered in damage assessment methods of destruction-resistance-potentialbased to evaluate the damage of the joints.The results are very discrete and the influence of looseness is not considered.Therefore,the damage assessment is not comprehensive. While the damage assessment method of loose degree and destruction-resistance-potential-based has considered the effect of both loose degree and destruction-resistance-potential on damage of joints,and the method is comprehensive and reasonable.
引文
[1]马炳坚.中国古建筑木作营造技术[M].北京:科学出版社,2003:125-139(MA Bingjian.Chinese ancient wooden construction technology[M].Beijing:Science Press,2003:125-139(in Chinese))
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[7]谢启芳,杜彬,李双,等.残损古建筑木结构燕尾榫节点抗震性能试验研究[J].振动与冲击,2015,34(4):165-210(XIE Qifang,DU Bin,LI Shuang,et al.Test for aseismic behaviors of damaged dovetail mortise-tenon joints of ancient timber buildings[J].Journal of Vibration and Shock,2015,34(4):165-210(in Chinese))
[8]谢启芳,杜彬,张风亮,等.古建筑木结构燕尾榫节点弯矩-转角关系理论分析[J].工程力学,2014,31(12):140-146(XIE Qifang,DU Bin,ZHANG Fengliang,et al.Theoretical analysis on moment-rotation relationship of dovetail joints for Chinese ancient timber structure buildings[J].Engineering Mechanics,2014,31(12):140-146(in Chinese))
[9]隋?,赵鸿铁,薛建阳,等.古建筑木结构直榫和燕尾榫节点试验研究[J].世界地震工程,2010,26(2):88-92(SUI Yan,ZHAO Hongtie,XUE Jianyang,et al.Experimental study on characteristics of mortise-tenon joints in historic buildings[J].World Earthquake Engineering,2010,26(2):88-92(in Chinese))
[10]隋?,赵鸿铁,薛建阳,等.古代殿堂式木结构建筑模型振动台试验研究[J].建筑结构学报,2010,31(2):35-40(SUI Yan,ZHAO Hongtie,XUE Jianyang,et al.A study on Chinese ancient timber structures by shaking table test[J].Journal of Building Structures,2010,31(2):35-40(in Chinese))
[11]Nakagawa T,Ohta M.Collapsing process simulations of timber structures under dynamic loading I:simulations of two-story frame models[J].Journal of Wood Science,2003,49(5):392-397.
[12]梁思成.清式营造则例[M].北京:清华大学出版社,2006:145-149(LIANG Sicheng.Construction examples of Qing dynasty[M].Beijing:Tsinghua University Press,2006:145-149(in Chinese))
[13]薛建阳,李义柱,夏海伦,等.不同松动程度的古建筑燕尾榫节点抗震性能试验研究[J].建筑结构学报,2016,37(4):73-79(XUE Jianyang,LI Yizhu,XIA Hailun,et al.Experimental study on seismic performance of dovetail joints with different loose degrees in ancient buildings[J].Journal of Building Structure,2016,37(4):73-79(in Chinese))
[14]李义柱.不同松动程度下古建筑燕尾榫节点抗震性能试验研究[D].西安建筑科技大学,2015(LI Yizhu.Experimental study on seismic behavior of dovetail mortise-tenon joints under different loose degrees in ancient timber buildings[D].Xi′an University of Architecture and Technology,2015(in Chinese))
[15]薛建阳,张风亮,赵鸿铁,等.古建筑木结构基于结构潜能和能量耗散准则的地震破坏评估[J].建筑结构学报,2012,33(8):127-134(XUE Jianyang,ZHANG Fengliang,ZHAO Hongtie,et al.Potential and energy dissipation-based seismic damaged evaluation of ancient timber structure[J].Journal of Building Structure,2012,33(8):127-134(in Chinese))
[16]GB 50165-92,古建筑木结构维护与加固技术规范[S].北京:中国建筑工业出版社,1992(GB 50165-92,Technical code for maintenance and strengthening of ancient timber buildings[S].Beijing:China Architecture&Building Press,1992(in Chinese))
[2]赵鸿铁,薛建阳,隋?,等.中国古建筑木结构及其抗震:试验、理论及加固方法[M].北京:科学出版社,2012:103-112(ZHAO Hongtie,XUE Jianyang,SUI Yan,et al.Chinese ancient wood structure and seismic:test,theory and strengthening method[M].Beijing:Science Press,2012:103-112(in Chinese))
[3]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(YAOKan,ZHAO Hongtie,GE Hongpeng.Experimental studies on the characteristic of mortise-tenon joint in historic timber buildings[J].Engineering Mechanics,2006,23(10):168-173(in Chinese))
[4]徐明刚,邱洪兴.中国古代木结构建筑榫卯节点抗震试验研究[J].建筑结构学报,2010(S2):345-349(XUMinggang,QIU Hongxing.Experimental studies on seismic behavior of mortise-tenon joints in Chinese ancient timber buildings[J].Journal of Building Structure,2010(S2):345-349(in Chinese))
[5]徐明刚,邱洪兴.古建筑木结构榫卯节点抗震试验研究[J].建筑科学,2011,27(7):56-58(XU Minggang,QIU Hongxing.Experimental study on seismic behavior of mortise-tenon joints of ancient architectures[J].Building Science,2011,27(7):56-58(in Chinese))
[6]谢启芳,杜彬,向伟,等.古建筑木结构燕尾榫节点抗震性能及尺寸效应试验研究[J].建筑结构学报,2015,36(3):112-120(XIE Qifang,DU Bin,XIANG Wei,et al.Experimental study on seismic behavior and size effects of dovetail mortise-tenon joints of ancient buildings[J].Journal of Building Structure,2015,36(3):112-120(in Chinese))
[7]谢启芳,杜彬,李双,等.残损古建筑木结构燕尾榫节点抗震性能试验研究[J].振动与冲击,2015,34(4):165-210(XIE Qifang,DU Bin,LI Shuang,et al.Test for aseismic behaviors of damaged dovetail mortise-tenon joints of ancient timber buildings[J].Journal of Vibration and Shock,2015,34(4):165-210(in Chinese))
[8]谢启芳,杜彬,张风亮,等.古建筑木结构燕尾榫节点弯矩-转角关系理论分析[J].工程力学,2014,31(12):140-146(XIE Qifang,DU Bin,ZHANG Fengliang,et al.Theoretical analysis on moment-rotation relationship of dovetail joints for Chinese ancient timber structure buildings[J].Engineering Mechanics,2014,31(12):140-146(in Chinese))
[9]隋?,赵鸿铁,薛建阳,等.古建筑木结构直榫和燕尾榫节点试验研究[J].世界地震工程,2010,26(2):88-92(SUI Yan,ZHAO Hongtie,XUE Jianyang,et al.Experimental study on characteristics of mortise-tenon joints in historic buildings[J].World Earthquake Engineering,2010,26(2):88-92(in Chinese))
[10]隋?,赵鸿铁,薛建阳,等.古代殿堂式木结构建筑模型振动台试验研究[J].建筑结构学报,2010,31(2):35-40(SUI Yan,ZHAO Hongtie,XUE Jianyang,et al.A study on Chinese ancient timber structures by shaking table test[J].Journal of Building Structures,2010,31(2):35-40(in Chinese))
[11]Nakagawa T,Ohta M.Collapsing process simulations of timber structures under dynamic loading I:simulations of two-story frame models[J].Journal of Wood Science,2003,49(5):392-397.
[12]梁思成.清式营造则例[M].北京:清华大学出版社,2006:145-149(LIANG Sicheng.Construction examples of Qing dynasty[M].Beijing:Tsinghua University Press,2006:145-149(in Chinese))
[13]薛建阳,李义柱,夏海伦,等.不同松动程度的古建筑燕尾榫节点抗震性能试验研究[J].建筑结构学报,2016,37(4):73-79(XUE Jianyang,LI Yizhu,XIA Hailun,et al.Experimental study on seismic performance of dovetail joints with different loose degrees in ancient buildings[J].Journal of Building Structure,2016,37(4):73-79(in Chinese))
[14]李义柱.不同松动程度下古建筑燕尾榫节点抗震性能试验研究[D].西安建筑科技大学,2015(LI Yizhu.Experimental study on seismic behavior of dovetail mortise-tenon joints under different loose degrees in ancient timber buildings[D].Xi′an University of Architecture and Technology,2015(in Chinese))
[15]薛建阳,张风亮,赵鸿铁,等.古建筑木结构基于结构潜能和能量耗散准则的地震破坏评估[J].建筑结构学报,2012,33(8):127-134(XUE Jianyang,ZHANG Fengliang,ZHAO Hongtie,et al.Potential and energy dissipation-based seismic damaged evaluation of ancient timber structure[J].Journal of Building Structure,2012,33(8):127-134(in Chinese))
[16]GB 50165-92,古建筑木结构维护与加固技术规范[S].北京:中国建筑工业出版社,1992(GB 50165-92,Technical code for maintenance and strengthening of ancient timber buildings[S].Beijing:China Architecture&Building Press,1992(in Chinese))