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Analysis of a Simplified Model of a Rigid Rocking Block on Winkler Foundation

Author

Listed:
  • Dongyi He

    (State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)

  • Peizhen Li

    (State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)

  • Zhen Zhang

    (State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)

Abstract

It has been observed from previous large earthquakes that weakening the structural foundation can reduce the damage of the structure itself by allowing a rocking motion to release the seismic energy, and this seismic design philosophy is gradually applied to new constructions. In this paper, a simplified model of the motion process of a rigid rocking block is proposed, the rocking motion equation of rigid rocking block is derived, and the parameter analysis is carried out. It was found that the height–width ratio and damping have a great impact on the rocking response of the structure. On this basis, combined with the Winkler foundation model, the equation of motion of the rigid rocking block considering the flexibility of the foundation is established. Through the analysis of an example, it is found that damping plays an important role in the overturning resistance of high-rise buildings and the soil elastic coefficient has a greater impact on the higher structure.

Suggested Citation

  • Dongyi He & Peizhen Li & Zhen Zhang, 2023. "Analysis of a Simplified Model of a Rigid Rocking Block on Winkler Foundation," Sustainability, MDPI, vol. 15(6), pages 1-21, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:6:p:5095-:d:1096235
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