Shake Table Test of Cylindrical Water Tanks in Base-Isolated Structures
Shake Table Test of Cylindrical Water Tanks in Base-Isolated Structures
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DOI：
10.1061/(asce)0733-9399(1990)116:7(1451
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发表时间：
1990-07
期刊：
影响因子：
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通讯作者：
M. Chalhoub;J. Kelly
中科院分区：
文献类型：
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作者：
M. Chalhoub;J. Kelly
本文介绍了通过研究两个相似的圆柱形水箱获得的实验结果。其中一个储罐直接固定在地震模拟器上，另一个安装在按比例缩小的九层钢结构的底座上。该结构被隔离在八个多层弹性轴承上。由于地面加速度的降低，隔离结构中储罐的动压力也降低了。由于表征基础隔震结构运动的频率较低，自由表面水位略有增加。这个问题可以通过适当选择隔离系统或在最大水粒子速度的位置添加阻尼器来克服。从线性波理论发展而来的理论解决方案与实验结果非常相关。进一步研究了大型储罐使用基础隔离的优点。
This paper presents the experimental results obtained from the study of two similar cylindrical water tanks. One of the tanks was directly fixed to the earthquake simulator, the other was mounted on the base of a scaled nine‐story steel structure. The structure was isolated on eight multilayered elastomeric bearings. Due to the reduction in the ground accelerations, the dynamic pressure is reduced for the tank in the isolated structure. Free‐surface water elevation was slightly increased due to the lower frequency that characterizes the motion of base‐isolated structures. This problem can be overcome by appropriate selection of the isolation system or by the addition of dampers at the location of maximum water particle velocities. A theoretical solution developed from linear wave theory correlates very well with the experimental results. Further study is carried out to investigate the advantages of using base isolation for large storage tanks.