Earthquakes and Structures

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Seismic performance of hybrid isolation plate-shell integrated concrete LSS

  • Lei Qi (Gansu Province Gully Fixing and Table and Protection Engineering Research Center, Longdong University) ;
  • Xuansheng Cheng (Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology) ;
  • Shanglong Zhang (Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology) ;
  • Yuyue Bu (Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology) ;
  • Bingbing Luo (Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology)
  • Received : 2021.05.26
  • Accepted : 2024.05.02
  • Published : 2024.07.25
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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.

Keywords

Acknowledgement

This paper is a part of the National Natural Science Foundation of China (Grant number: 51968045, 51908267, 52168071), Higher Education Innovation Fund Project of Gansu Province, China (Grant number: 2022B-215), Science and Technology Project of Gansu Province, China (Grant number: 22JR5RM211, 20JR10RA132), Science and Technology Plan Project of Qingyang City, China (Grant number: QY-STK-2022A-003), Doctor Fund Program of Longdong University.

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