本文对普通LNG球罐和带耗能柱脚的LNG球罐进行了模态分析结果的对比,在国内现行的规范下,带耗能系统的LNG球罐可以显著地减少地震力。并对两类球罐进行了地震时程分析,对比了两种球罐在四类不同场地地震波作用下球罐各关键部位的受力情况。最后,通过对铰接约束情况下所设计的软钢阻尼器的残余耗能能力的试验结果和理想条件下阻尼器耗能能力的对比,提出了对柱脚约束特殊处理的方法。 In this paper, we compared the modal analysis results of ordinary LNG spherical tank and LNG tank with energy dissipation column foot. Under the current domestic standard, the LNG tank with energy dissipation system can significantly reduce the seismic force. The earthquakes of two kinds of spherical tanks were analyzed. The stress of the key parts of the spherical tank under two types of spherical tanks were compared under the action of the seismic waves of four different types of tanks. Finally, by comparing the experimental results of the residual energy dissipation capacity of the mild steel dampers designed under the constraint of hinges and the energy dissipation capacity of the dampers under the ideal conditions, a special method for the treatment of the column foot constraint is proposed.