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Real-time hybrid test of a LNG storage tank with a variable curvature friction pendulum system
Archives of Civil and Mechanical Engineering ( IF 4.4 ) Pub Date : 2021-05-27 , DOI: 10.1007/s43452-021-00245-z
Shu-chao Lin , Jingxuan Wang , Shan Gao , Hong-tie Zhao

To accurately reproduce the seismic response of the liquefied natural gas (LNG) storage tank equipped with the variable curvature friction pendulum system (VCFPS), a real-time hybrid (RTH) experiment, also known as a real-time substructure experiment, is conducted on it in this study. A typical LNG storage tank with a capacity of 160,000 m3 is employed as the numerical substructure simulated using the MATLAB/Simulink, while the variable curvature friction pendulum bearing (VCFPB) is utilized as the experimental substructure tested using the compression-shear equipment. Thereafter, the validity and feasibility of the RTH experiment are verified using the SAP2000 results. Finally, the working performance of the VCFPB is evaluated scientifically, comprehensively, reasonably, and efficiently. The results show that the VCFPB is very effective in avoiding the resonance phenomenon. It can be seen from the displacement of isolation layer that the VCFPB meets the design requirement. The maximum relative deviations between the RTH test results and the SAP2000 results are 3.45% for the displacement of isolation layer, 4.27% for the base shear, and 1.49% for the liquid sloshing height, respectively. The RTH test is stable and reliable and the predicted results are highly accurate and effective. The RTH test method proves to be accurate in the prediction of the seismic response of the LNG storage tank equipped with the VCFPBs.



中文翻译:

具有可变曲率摩擦摆系统的液化天然气储罐的实时混合测试

为了准确地再现配备有变曲率摩擦摆系统(VCFPS)的液化天然气(LNG)储罐的地震响应,我们进行了实时混合(RTH)实验(也称为实时子结构实验)在这项研究中。典型的液化天然气储罐,容量为160,000 m 3将其用作使用MATLAB / Simulink仿真的数值子结构,而将可变曲率摆锤轴承(VCFPB)用作使用压缩剪切设备测试的实验子结构。此后,使用SAP2000结果验证了RTH实验的有效性和可行性。最后,科学,全面,合理,有效地评估了VCFPB的工作性能。结果表明,VCPFB在避免共振现象方面非常有效。从隔离层的位移可以看出,VCFPB满足设计要求。RTH测试结果与SAP2000结果之间的最大相对偏差为:隔离层位移为3.45%,基础剪切力为4.27%,液体晃动高度为1.49%,分别。RTH测试稳定可靠,预测结果高度准确有效。RTH测试方法被证明在预测配备有VCFPB的LNG储罐的地震响应方面是准确的。

更新日期:2021-05-27
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