Liquefied natural gas storage tank simplified mechanical model and seismic response analysis
Liquefied natural gas storage tank simplified mechanical model and seismic response analysis
复制标题
液化天然气储罐简化力学模型及地震反应分析
DOI：
10.1016/j.soildyn.2020.106491
复制
发表时间：
2020-11
影响因子：
4
通讯作者：
Zhen Wang
中科院分区：
文献类型：
--
作者：
Dongyu Luo;Chunguang Liu;Jiangang Sun;Lifu Cui;Zhen Wang
本研究设计了液化天然气（LNG）储罐缩比模型，进行振动台试验，研究了不同地震动条件下储罐保温层的主要位置及场地效应。试验结果表明，保温层与储罐液固耦合部位存在明显的相互作用，且储罐的地震响应与地震动频率有关，在分析液固耦合结构地震响应时应考虑场地效应。根据试验结果，建立了考虑隔热层的LNG储罐抗震设计简化力学模型，并通过数值模拟方法对简化力学模型进行了验证。此外，根据16×104m3LNG储罐简化力学模型的结果，填充保温材料后，底部剪力和弯矩平均降低20%~25%，内罐壁加速度和位移平均降低40%。在大型LNG储罐的抗震设计中，考虑绝热阻尼作用有助于节省设计资金，而忽略绝热阻尼作用则会使设计保守。
In this study, a scale model of a liquefied natural gas (LNG) storage tank was designed to carry out a shaking table test, the main position of insulation layer on tank and the site effect were investigated under different ground motions. The test results show that there is an obvious interaction between the insulation layer and the liquid-solid coupling position of the storage tank, and the seismic response of the tank was related to the frequency of the ground motions, the site effect should be considered when analysing the seismic response of liquid-solid coupling structures. Based on the test results, a simplified mechanical model for the seismic design of LNG storage tanks that considered the insulation layer was constructed, and the simplified mechanical model was verified via a numerical simulation method. Moreover, based on the results of the 16 × 104m3LNG storage tank simplified mechanical model, the base shear and bending moment were reduced by 20%–25% on average, the acceleration and displacement of the inner tank wall were reduced by 40% on average after filling the insulation. In the seismic design of large scale LNG storage tanks, considering the damping effect of insulation is helpful to save design capital, and ignoring the damping effect of insulation will make the design conservative.
登录
查看更多内容
DOI：
10.1115/icone25-67480
发表时间：
2017-07
期刊：
--
影响因子：
--
作者：
J. Xiong
通讯作者：
J. Xiong
DOI：
--
发表时间：
1977-10
期刊：
--
影响因子：
--
作者：
D. P. Clough
通讯作者：
D. P. Clough
影响因子：
6.4
作者：
M. S. Sobhan;F. Rofooei;N. K. Attari
通讯作者：
M. S. Sobhan;F. Rofooei;N. K. Attari
多摩擦摆系统隔震 LNG 储罐的地震分析
影响因子：
2.8
作者：
Zhang Ruifu;Weng Dagen;Ren Xiaosong
通讯作者：
Ren Xiaosong
影响因子：
4.5
作者：
M. Angelis;R. Giannini;F. Paolacci
通讯作者：
M. Angelis;R. Giannini;F. Paolacci