Pounding Dynamic Responses and Mitigation Measures of Sliding Base-isolated Concrete Rectangular Liquid Storage Structuress

  • Xuansheng ChengEmail author
  • Wei Jing
  • Lei Qi
  • Lijun Gong
Structural Engineering


This paper adopts a simplified spring-mass mechanical model for a concrete rectangular liquid-storage structure (CRLSS). Using a nonlinear model to simulate the pounding effect based on the contact element method, the effects of pounding and parameters on the dynamic responses of a CRLSS are studied. Mitigation measures for the pounding effect are investigated. The dynamic responses and the liquid sloshing height are increased after pounding. A parameter analysis shows that impact stiffness, initial gap, peak ground velocity, isolation period, liquid height and length-width ratio (LWR) of the structure are the main factors affecting the pounding response. Certain intermediate gaps can maximize the amplification caused by pounding. The coefficient of restitution (COR) can be reduced by installing a bumper layer, and the COR decreases with an increasing bumper thickness. A reasonable bumper design not only allows the moat wall to limit the displacement but also effectively reduces the structure’s dynamic responses and number of collisions caused by pounding.


sliding base isolation rectangular liquid-storage structure moat wall dynamic responses mitigation measure 


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This paper is a part of the National Natural Science Foundation of China (Grant number: 51478212, 51368039), a part of the China Postdoctoral Science Foundation (2018M633652XB).


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Copyright information

© Korean Society of Civil Engineers 2019

Authors and Affiliations

  1. 1.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of EducationLanzhou University of TechnologyLanzhouChina
  2. 2.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu ProvinceLanzhou University of TechnologyLanzhouChina
  3. 3.Institute of Earthquake Protection and Disaster MitigationLanzhou University of TechnologyLanzhouChina

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