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Earthquakes and Structures Volume 27, Number 1, July 2024 , pages 57-67 DOI: https://doi.org/10.12989/eas.2024.27.1.057 |
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Seismic performance of hybrid isolation plate-shell integrated concrete LSS |
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Lei Qi, Xuansheng Cheng, Shanglong Zhang, Yuyue Bu and Bingbing Luo
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| Abstract | ||
| To assess the seismic performance of Plate-Shell Integrated Concrete Liquid-Storage Structure (PSICLSS), a scaled test model was constructed. This model incorporated a hybrid isolation system, which combined shape memory alloy (SMA), lead-cored rubber isolation bearing (LRB) and sliding isolation bearing (SB). By conducting shaking table test, the dynamic responses of both non-isolated and hybrid-isolated PSICLSS were analyzed. The results show that the hybrid isolation system can effectively reduce the acceleration and displacement responses of the structure. However, it also results in an increase in local hydrodynamic pressure and liquid sloshing height. Under extreme earthquake action, the displacement of isolation layer is small. When vertical ground motion is taken into account, the shock absorption rate of horizontal acceleration decreases. The peak hydrodynamic pressure increases significantly, and the peak hydrodynamic pressure position also changes. The maximum displacement of isolation layer increases, the residual displacement decreases. | ||
| Key Words | ||
| concrete; hybrid isolation; liquid storage structure; shaking table test; shape memory alloy | ||
| Address | ||
| Lei Qi: Gansu Province Gully Fixing and Table and Protection Engineering Research Center, Longdong University, Qingyang 745000, China Xuansheng Cheng, Shanglong Zhang, Yuyue Bu and Bingbing Luo: Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China | ||