摘要
为了有效控制储罐在地震作用下液体的晃动波高,以15×10~4m^3浮顶储罐为研究对象,考虑浮顶的影响,采用悬挂式分层存储方式,利用ADINA有限元软件建立数值分析模型,输入E1-Centro地震波,计算分层存储储罐在不同的层间距、分隔板半径以及分隔板数量条件下的地震响应数值模拟结果,并与浮顶储罐数值结果进行对比。结果表明:当悬挂式分层存储储罐考虑单个分隔板,且其层间距为6.4 m、隔板半径为24.5 m时,储罐储液晃动波高的降低率达到33.38%,对动水压力降低率为7.09%,对基底剪力和倾覆力矩影响微小。地震作用下悬挂式分层存储储罐能够显著地抑制储液的晃动波高,减少储液溢出和浮顶的损坏,可以进一步降低次生灾害。
This paper is aimed at an effective control of the sloshing wave height of the liquid under earthquake process.The research building on a 15＆#215;104 m3 floating roof storage tank with the suspended layered storage involves developing a numerical model by considering the floating roof effect, adopting the suspended layered storage device, and using ADINA finite element software;by introducing E1-Centro seismic wave, calculating the seismic response of the suspended layered storage tanks as conditioned by the differences in layer distance, partition plate radius, and partition plate count;and comparing the result with that of floating roof tanks.The results shows that when the suspended layered storage tank is designed with a single partition plate with layer distance of 6.4 m and partition plate radius of 24.5 m, the storage tank has the sloshing wave height reduction rate of 33.38％, the dynamic pressure reduction of 7.09％, and the slight effect on the base shear force and overturning moment.It follows that, under the action of earthquakes, the suspended layered storage tank enables a significant restraint of the sloshing wave height of the liquid, and a reduction of the overflow of the liquid and the damage of the floating roof, contributing to a further reduction of the secondary disasters.
出处
《黑龙江科技大学学报》
CAS
2017年第5期543-549,共7页
Journal of Heilongjiang University of Science And Technology
基金
中国石油科技创新基金项目(2016D-5007-0608)
关键词
地震响应
浮顶储罐
分层存储
晃动波高
seismic response
storage tank
layered liquid
sloshing wave height
