TY - JOUR

T1 - On the influence of seasonal changes in the resonant properties of surface soils on seismic safety of structures

AU - Kolesnikov, Yu I.

AU - Fedin, V. V.

AU - Ngomayezwe, L.

N1 - Funding Information: This work was supported by the project FNI № 0331-2019-0009 “Dynamic analysis of seismic data for the construction of realistic models of the geological environment based on mathematical and physical modeling”. Publisher Copyright: © 2021 Elsevier B.V. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/10

Y1 - 2021/10

N2 - Field experiments were carried out to assess the possible changes of the seismic safety of buildings due to seasonal variations in the resonant properties of the near-surface soils. The natural frequencies of a ten-storey building and the surface soil layer were determined from passive seismic measurements. The observations were carried out at the end of January when the top soil layer was frozen because of prolonged exposure to negative temperatures, and at the end of June after the ground was completely thawed. The results of the experiments showed that in areas characterized by alternation of long periods of positive and negative temperatures, the natural frequencies of surface soils can change significantly more than the natural frequencies of the buildings built on them. In certain periods, such changes can lead to the coincidence of some natural frequencies of the soil layer and the buildings standing on it, which ultimately reduces the latter seismic safety.

AB - Field experiments were carried out to assess the possible changes of the seismic safety of buildings due to seasonal variations in the resonant properties of the near-surface soils. The natural frequencies of a ten-storey building and the surface soil layer were determined from passive seismic measurements. The observations were carried out at the end of January when the top soil layer was frozen because of prolonged exposure to negative temperatures, and at the end of June after the ground was completely thawed. The results of the experiments showed that in areas characterized by alternation of long periods of positive and negative temperatures, the natural frequencies of surface soils can change significantly more than the natural frequencies of the buildings built on them. In certain periods, such changes can lead to the coincidence of some natural frequencies of the soil layer and the buildings standing on it, which ultimately reduces the latter seismic safety.

KW - Natural vibrations of the building

KW - Passive seismic observations

KW - Resonant properties of the near surface soils

KW - Seasonal changes

KW - Seismic safety

UR - http://www.scopus.com/inward/record.url?scp=85110288499&partnerID=8YFLogxK

U2 - 10.1016/j.jappgeo.2021.104412

DO - 10.1016/j.jappgeo.2021.104412

M3 - Article

AN - SCOPUS:85110288499

VL - 193

JO - Journal of Applied Geophysics

JF - Journal of Applied Geophysics

SN - 0926-9851

M1 - 104412

ER -