Vibration characteristic of rubber isolation plate-shell integrated concrete liquid-storage structure

Xuansheng Cheng; Lei Qi; Shanglong Zhang; Yiting Mu; Lingyu Xia

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자료유형: 학술저널

저자정보: Xuansheng Cheng (Lanzhou University of Technology) Lei Qi (Lanzhou University of Technology) Shanglong Zhang (Lanzhou University of Technology) Yiting Mu (Lanzhou University of Technology) Lingyu Xia (Lanzhou University of Technology)

저널정보: 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.81 No.6

발행연도: 2022.3

수록면: 691 - 703 (13page)

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To obtain the seismic response of lead-cored rubber, shape memory alloy (SMA)-rubber isolation Plate-shell Integrated Concrete Liquid-Storage Structure (PSICLSS), based on a PSICLSS in a water treatment plant, built a scale experimental model, and a shaking table test was conducted. Discussed the seismic responses of rubber isolation, SMA-rubber isolation PSICLSS. Combined with numerical model analysis, the vibration characteristics of rubber isolation PSICLSS are studied. The results showed that the acceleration, liquid sloshing height, hydrodynamic pressure of rubber and SMA-rubber isolation PSICLSS are amplified when the frequency of seismic excitation is close to the main frequency of the isolation PSICLSS. The earthquake causes a significant leakage of liquid, at the same time, the external liquid sloshing height is significantly higher than internal liquid sloshing height. Numerical analysis showed that the low-frequency acceleration excitation causes a more significant dynamic response of PSICLSS. The sinusoidal excitation with first-order sloshing frequency of internal liquid causes a more significant sloshing height of the internal liquid, but has little effect on the structural principal stresses. The sinusoidal excitation with first-order sloshing frequency of external liquid causes the most enormous structural principal stress, and a more significant external liquid sloshing height. In particular, the principal stress of PSICLSSS with long isolation period will be significantly enlarged. Therefore, the stiffness of the isolation layer should be properly adjusted in the design of rubber and SMA-rubber isolation PSICLSS.

#concrete #liquid storage structure #rubber isolation #shaking table test #shape memory alloy #vibration characteristic

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