Assessment of seismic wave propagation in the soil-structure system of reinforced-concrete buildings using the HVSR method

The scientific novelty of this study lies in the comprehensive quantitative assessment of the dynamic response of soil-structure systems in reinforced-concrete multistory buildings in the Olmazor district of Tashkent using the HVSR technique. Unlike conventional site-response studies, microseismic vibrations were systematically recorded at the ground surface, foundation level, and individual floors, enabling determination of the fundamental resonance frequency (fo) and HVSR amplification factor (AHVSR). The vertical distribution of seismic energy was quantitatively evaluated using normalized energy indices (En and Enorm), revealing a pronounced increase in vibration amplitude and seismic energy toward upper floors and, consequently, greater potential for resonance effects at elevated levels. The study established a clear relationship between local soil dynamic properties and the natural vibration characteristics of buildings, demonstrating the significant influence of site conditions on structural seismic response. Based on these findings, an integrated approach was developed to assess the dynamic behavior and seismic stability of soil-structure systems. The approach enables identification of critical resonance conditions and vertical amplification effects and can support seismic microzonation, structural health monitoring, and urban seismic risk assessment in seismically active areas.

Hali tarjima qilinmagan