根据球罐几何结构特征和承载特性，并考虑抗震计算的实际需要和计算的完整性

根据球罐几何结构特征和承载特性，并考虑抗震计算的实际需要和计算的完整性，建立球罐的全模型，球壳上的接管、人孔一般都远离支柱连接区，从整体角度其影响作用只是局部的，加之整体分析重点考察在地震载荷作用下支柱与球罐相连接部位的应力状况，同时为了降低网格划分和加载的难度，将其简化为光滑的球壳，计算模型如图2所示。

根据球罐几何结构特征和承载特性，并考虑抗震计算的实际需要和计算的完整性，建立球罐的全模型，球壳上的接管、人孔一般都远离支柱连接区，从整体角度其影响作用只是局部的， 加之整体分析重点考察在地震载荷作用下支柱与球罐相连接部位的应力状况，同时为了降低网格划分和加载的难度，将其简化为光滑的球壳，计算模型如图2所示。

According to the geometric structure and bearing characteristics of the spherical tank, and considering the actual needs of aseismic calculation and the integrity of calculation, a full model of the spherical tank is established. The nozzles and manholes on the spherical shell are generally far away from the pillar connection area, and their influence is only partial from the overall point of view. In addition, the overall analysis focuses on the stress condition of the connection part between the pillar and the spherical tank under the earthquake load, which is the same as In order to reduce the difficulty of mesh generation and loading, it is simplified as a smooth spherical shell, and the calculation model is shown in Figure 2.<br>