近场地震下立式隔震储罐试验研究及理论分析  

Experimental Investigation and Theoretical Analysis of Isolation Storage Tanks Subjected to Near Field Earthquake

作　　者：毛景远 沈朝勇[1,2,3] 黄襄云 谭平[1,2,3] MAO Jingyuan;SHEN Chaoyong;HUANG Xiangyun;TAN Ping(Earthquake Engineering Research &Test Center,Guangzhou University,Guangzhou 510405,China;Guangdong Provincial Key Laboratory of Earthquake Engineering and Applied Technology,Guangzhou 510405,China;Key Laboratory of Earthquake Resistance,Earthquake Mitigation and Structural Safety,Ministry of Education,Guangzhou 510405,China)

机构地区：[1]广州大学工程抗震研究中心,广州510405 [2]广东省地震工程与应用技术重点实验室,广州510405 [3]工程抗震减震与结构安全教育部重点实验室,广州510405

出　　处：《华南地震》2018年第4期90-95,共6页South China Journal of Seismology

基　　金：国家自然科学基金项目(51578168);广东省教育厅创新团队项目(2016KCXTD016);广东特支计划项目(2014TX01C141)资助

摘　　要：针对近场地震激励下隔震储罐响应的问题,采用简化后的三质点力学模型,分别对铅芯橡胶支座隔震储罐模型在近、远场地震作用下的响应进行了对比分析,并将理论分析结果和振动台试验结果进行了对比。对比结果显示,理论分析得出的加速度响应与振动台试验结果相近,但理论分析结果会略微偏小。进一步的理论分析结果表明:近场地震下基础隔震能有效降低储罐的基底剪力和基底弯矩,而晃动波高有所增大;隔震后储罐加速度峰值位于液固耦合质点附近。Aiming at the problem of the dynamic responses of LRB isolated storage tank under near field seismic excitation, the simplified three particle mechanical model was adopted to analyze and compare the near and far field seismic responses of LRB isolation model tank. the results of theoretical analysis and shaking table test were compared. The comparison results show that the acceleration response of the theoretical analysis is similar to those of the shaking table test, but the results of theoretical analysis are slightly smaller. Further theoretical analyses show that the base shear force and base bending moment can be effectively reduced by base isolation under near field earthquakes, while the height of sloshing wave increases. The peak acceleration of isolation storage tank locates near the liquid-solid coupling joint.

关 键 词：近场地震 基底隔震 储罐 理论分析 振动台试验 

分 类 号：TE972[石油与天然气工程—石油机械设备]