中国古建筑木结构铺作层与柱架抗震试验研究
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摘要
通过对按照《营造法式》制作的枓栱的缩尺腜徒械ザ洹⑺湫ぷ鳌⑺亩湫ぷ鞯乃降椭芊锤春?载试验研究,得到了铺作层侧向刚度和强度退化规律、变形及耗能性能,建立了恢复力模型。通过对按照《营造法式》制作的透榫和燕尾榫木构架模型及碳纤维布(CFRP)加固燕尾榫节点木构架模型的水平低周反复荷载试验研究,得到了透榫节点、燕尾榫节点及CFRP加固燕尾榫节点的滞回曲线、骨架曲线、节点半刚性连接特性和刚度退化规律及恢复力模型。试验表明枓栱侧向刚度大本身变形小,其耗能特性以水平滑移隔振为主。木构架具有非常好的变形能力,透榫的连接强度和节点刚度比燕尾榫的大。破坏的燕尾榫节点经CFRP加固后的构架刚度比未加固燕尾榫构架大,但强度较未加固燕尾榫构架小。研究结果为古建筑的抗震性能研究和修缮加固提供了理论基础。
Through the low cyclic loading experiments of single dougong, two dougongs and four dougongs, the degradation of lateral stiffness of dougong is studied. The hysteresis curve and skeleton curve of force-displacement are studied and the formulas of resilience model and mechanical model are established. The low-cyclic reversed loading tests were conducted for 9 wooden frame models, including 3 straight mortise-tenon structure models and 3 swallow-tailed mortise-tenon structure models constructed in accordance with the requirements of the Fabrication Methods of Song Dynasty (960-1270, A.D.), and 3 swallow-tailed mortise-tenon structure models strengthened with carbon fiber reinforced polymer (CFRP) sheets. Such behaviors as the failure characteristics, hysteretic curve and skeleton curve, degeneration of strength and rigidity, deformation and energy dissipation capacity are analyzed. Restoring force model is established, based on this experiment, for the prototype structures. The result of the test provides a basis for seismic performance study and reinforcement for Chinese historic buildings.
Through the low cyclic loading experiments of single dougong, two dougongs and four dougongs, the degradation of lateral stiffness of dougong is studied. The hysteresis curve and skeleton curve of force-displacement are studied and the formulas of resilience model and mechanical model are established. The low-cyclic reversed loading tests were conducted for 9 wooden frame models, including 3 straight mortise-tenon structure models and 3 swallow-tailed mortise-tenon structure models constructed in accordance with the requirements of the Fabrication Methods of Song Dynasty (960-1270, A.D.), and 3 swallow-tailed mortise-tenon structure models strengthened with carbon fiber reinforced polymer (CFRP) sheets. Such behaviors as the failure characteristics, hysteretic curve and skeleton curve, degeneration of strength and rigidity, deformation and energy dissipation capacity are analyzed. Restoring force model is established, based on this experiment, for the prototype structures. The result of the test provides a basis for seismic performance study and reinforcement for Chinese historic buildings.
引文
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[2]赵均海.中国古建筑枓栱的动力实验研究[J].实验力学,1999,14(4):106-112(Zhao Junhai.An experimental study for the dynamic characteristics of“Dougong”[J].Journal of Experimental Mechanics,1999,14(4):106-112(in Chinese))
[3]薛建阳,张鹏程,赵鸿铁.古建木结构抗震机理的探讨[J].西安建筑科技大学学报,2000,32(1):8-11(Xue Jianyang,Zhang Pengcheng,Zhao Hongtie.Study on the aseismic mechanism of historic timber structural building[J].Journal of Xi an University of Architecture&Technology,2000,32(1):8-11(in Chinese))
[4]张鹏程,赵鸿铁,薛建阳,等.中国古建筑的防震思想[J].世界地震工程,2001,17(4):1-6(Zhang Pengcheng,Zhao Hongtie,Xue Jianyang,et al.Thoughts of earthquake resistance in Chinese ancient buildings[J].World Information on Earthquake Engineering,2001,17(4):1-6(in Chinese))
[5]李诫.营造法式[M].上海:商务印书馆,1950
[6]梁思成.梁思成全集[M].第七卷.北京:中国建筑工业出版社,2001
[7]潘德华.枓栱[M].南京:东南大学出版社,2004
[8]张文芳,李世温,程文瀼.一类斗拱木结构恢复力特性的模型试验研究[J].东南大学学报:自然科学版,1997,27(1):65-70(Zhang Wenfang,Li Shiwen,Cheng Wenrang.Experimental research on restoring force of wooden structures with dou-shaped arch nodes[J].Journal of Southeast University:Natural Science Edition,1997,27(1):65-70(in Chinese))
[9]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的试验研究[J].西安建筑科技大学学报,2002,34(4):317-319(Gao Dafeng,Zhao Hongtie,Xue Jianyang,et al.Experimental study on the behavior of wooden frame of ancient Chinese ancient buildings under horizontally reverse load[J].Journal of Xi an University of Architecture&Technology,2002,34(4):317-319(in Chinese))
[10]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 studies on the characteristic of mortise-tenon joint in historic timber buildings[J].Engineering Mechanics,2006,23(10):168-173(in Chinese))
[11]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,Zhao Hongtie,Xue Jianyang,et al.An experimental study on the strengthening of mortise-tenon joints in ancient Chinese wooden buildings[J].China Civil Engineering Journal,2008,41(1):28-34(in Chinese))
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