【摘要】 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。更多还原

【Abstract】 This paper presents a comparison between results of modal analysis on common LNG spherical tank and tank with damping column base.Of the two the latter have a greater effect on reduction of seismic force according to the domestic code about vertical spherical tank design.And stress conditions of key positions of the two tanks are contrasted by seismic time history analysis.Finally,this paper compares results of the experiment on energy dissipation capacity of mild steel dampers designed under hinged constraint condition with that under ideal condition and puts forward a solution of constraint of column base.更多还原