Abstract
This paper presents an innovative seismic isolation system for the structure and unbounded rubber soil. The dynamic interaction of the rubber soil and structure is considered. The rubber soil mixture is constituted by rubber particles and clay. The pollution problem of wast rubber is solved effectively. The rubber soil is firstly introduced into the ordinary unbounded foundation. According to the composite material theory and hybrid law, the rubber soil modulus formulation is derived by two-phase modulus innovatively. By employing the standard viscous boundary method, the radiation damping of unbounded rubber soil is considered. And then, the novel wave propagation equation of unbounded rubber soil is derived. Based on the cylindrical expansion wave and cut-off wave assumptions, the normal and tangential boundary condition equations are derived, respectively. The interaction force causing by earthquake on the rubber soil and structure is modeled. Numerical examples are presented to demonstrate the effectiveness and reliability of the proposed method for the rubber soil and structure interaction model. The seismic response of the rubber soil and structure system is discussed. Excellent seismic performance of rubber soil is confirmed. The influence of the rubber soil content and thickness are discussed in detail.
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Acknowledgments
This research was supported by Key Laboratory of Environment Controlled Aquaculture (Dalian Ocean University) Ministry of Education (202305) and Science Research Funding Project of education department of Liaoning Province in 2023 (JYTMS20230482, JYTMS20230506) for which the authors are grateful.
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Lu, S., Lin, G., Wang, Z. et al. A Numerical Research on Dynamic Interaction of the Rubber Soil Foundation and Structure. KSCE J Civ Eng (2024). https://doi.org/10.1007/s12205-024-0086-8
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DOI: https://doi.org/10.1007/s12205-024-0086-8