【摘要】 沧州铁狮子是我国首批国家级重点文物,也是中国乃至世界上年代最早、体积最大的单体浇筑的室外大型铸铁文物。为研究铁狮子在地震作用下的安全性,进行了弹塑性时程分析。采用三维激光扫描的方法建立了铁狮子的几何模型,在封闭的空间实体上划分网格得到有限元模型,对其在8度罕遇地震作用下响应进行了对比分析。计算结果表明铁狮子本身及支架的应力均远小于相应材料的强度,水平及竖向变形均较小,铁狮子结构的抗震性能满足要求。更多还原

【Abstract】 The Cangzhou iron lion is the first batch important heritage site under state protection,and it is also an earliest and bigness cast iron historical relic by one pouring technology.In order to evaluate the seismic safety of the lion,a non-linear time-history analysis was performed with finite element program.After the geographical model of the lion was acquired by the method of 3D laser scanning,a finite element model was founded though meshing on the closed entity and then the response of the lion under 8 degrees of an unordinary earthquake action.The results show that the stress of both the lion and its brackets is less than the yield stress respectively,horizontal and vertical displacements are both on the small side,and the lion structure has sufficient seismic safety.更多还原