【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。更多还原

【Abstract】 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.更多还原