【摘要】 为了研究木结构古建筑侧脚的结构作用,首先从力学角度分析了侧脚的抗震机理;而后根据七檩大式殿堂的真实结构特点,建立了有侧脚和无侧脚七檩大式殿堂的有限元模型,对其进行了弹塑性动力分析,得到了檐柱柱头加速度、位移及柱根轴力的地震响应曲线,结果表明木结构古建筑设置侧脚后檐柱柱头加速度峰值、位移峰值以及檐柱轴压力峰值均有不同程度的减小,从而定量的说明了侧脚的结构作用。更多还原

【Abstract】 In order to study the structural effects of Chinese historical timber buildings with lateral foots,first,the isolation mechanism of the lateral foots is analyzed in the view of mechanics,then,the FEM models of the structures with and without the lateral foots are built based on the real characters of a timber frame palace with seven purlins.At the same time,the elasto-plastic dynam analysis is made to obtain the acceleration and displacement of the head of eaves-columns and the earthquake response curves of axial force of the column root.The results show that the peaks of the acceleration,displacement and axial force would decrease in varying degrees after setting the lateral foots,which could illustrate the structural effects of the lateral foots quantitatively.更多还原