PERFORMANCE OF A HIGH-RISE REINFORCED CONCRETE BUILDING WITH A SLIDING BELT, TAKING INTO ACCOUNT THE NONLINEAR CHARACTER OF DEFORMATION

Oleg V. Mkrtychev, Salima R. Bulusheva

Abstract


Introduction: The relevance of seismic isolation is driven by the need to improve the safety of buildings and structures in conditions of high seismic activity. Earthquakes pose a serious threat to human life and can result in significant economic and material losses. With the development of urbanization and increasing building density in earthquakeprone regions, there is growing demand for methods that effectively mitigate the destructive impact of seismic waves on structures. Purpose of the study: The study aims to analyze the performance of a high-rise reinforced concrete building with a sliding belt, taking into account the nonlinear nature of deformation. Methods: Calculations were performed using the LS-DYNA software through the direct dynamic method with explicit schemes for direct integration of the equations of motion, employing a nonlinear model of concrete and reinforcement. Foundation–structure interaction was modeled using the substructure method, while the nonlinear behavior of the soil foundation was described by the Mohr–Coulomb model. Results and discussion: The analysis shows a decrease in the effectiveness of seismic isolation in the form of a sliding belt at the foundation level of high-rise buildings. Considering all structural characteristics, it is possible to select optimal parameters for the seismic isolation sliding belt to effectively protect the building from seismic loads.

Keywords


seismic isolation, sliding belt, high-rise buildings, nonlinear behavior, soil foundation

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References


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