In order to study the seismic response of large vertical storage tanks under near ground earthquake, the finite element analysis software ADINA was used to establish the 15×104m3 vertical storage tank model,earthquake excitation was input to tank model,the finite element solution of seismic response and the theory solution of elastic coupling were contrastive analyed, the seismic response analysis was carried out by three kinds of near-fault earthquake. The results show that under the near fault pulse-typed ground motions, the sloshing height is significantly greater than the without velocity pulse of near fault ground motions because of its rich long-period components. The overturn-ing moment is also slightly larger. Under the near fault ground motion, the dynamic response is larg-er,so it is necessary to adopt isolation measures for large vertical storage tanks.%为了研究在近断层地震激励下大型立式储罐的响应问题,本文利用有限元软件ADINA建立了15× 104m3立式储罐模型,对储罐模型输入地震激励,将得到的地震响应有限元解与弹性耦联理论解进行对比分析.输入三类近断层地震动进行地震响应分析.结果表明,在脉冲型近断层地震动作用下,由于其含有丰富的长周期成分,所引起的晃动波高明显大于无速度脉冲近断层地震动,倾覆弯矩也偏大.近断层地震动作用下,引起较大的地震响应,需要对大型立式储罐采取隔震措施.
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