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通过对典型枓栱的腜偷牡椭芊锤春稍厥匝?研究了枓栱侧向刚度的退化规律.试验得出枓栱的力-位移滞回曲线及骨架曲线,并拟合出了力-位移的关系方程和枓栱恢复力腜?由试验结果给出枓栱侧向刚度的线性变化.通过试验得出以下主要结论:枓栱以水平滑移变形为主,并通过摩擦滑移起到耗能、隔振的效果;枓栱的滞回曲线呈平行四边形,形状饱满外包络面积大,说明枓栱具有良好的滞回耗能特性;枓栱的力学腜?属于线性强化弹塑性模型.恢复力模型反应了枓栱恢复力特性及刚度变化规律,适应于同类木结构的静力传递和结构动力分析计算研究.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.
By studying the degradation regularity of the lateral stiffness of the emu, the force-displacement hysteresis curve of the emu and the skeleton curve of the emu are obtained and the force is fitted The relationship between displacement and 枓 栱 restoring force 腜 The linear variation of 枓 栱 lateral stiffness is given by the test results.The main conclusions are as follows: 枓 栱 mainly horizontal slip deformation, To the energy consumption, the effect of vibration isolation; 枓 滞 hysteresis curve was parallelogram, the shape of the full envelope area, indicating that 枓 栱 has a good hysteretic energy dissipation characteristics; 枓 栱 mechanical 腜? Belong to the linear enhanced elastic-plastic Model.The model of restoring force reflects the characteristic of restoring force and the changing rule of stiffness, and is applicable to the static transfer and structural dynamic analysis of the same type of wood structure.The research results provide a theoretical basis for the research and repair and reinforcement of the anti-seismic performance of ancient buildings.