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Dynamics of changes of the seismic risk of the territory of a big city in time, due to the vulnerability of multi-apartment buildings (a case study of Yerevan)
1 Territorial Survey for Seismic Protection, Ministry of Emergency Situations of Armenia, Gyumri, Armenia
2 Institute of Geological Sciences, National Academy of Sciences of Armenia, Yerevan, Armenia
3 Yerevan State University, Yerevan, Armenia
4 Siemens Industry Software, Department D2S «Calibri», Yerevan, Armenia
Journal: Geophysical processes and biosphere
Tome: 21
Number: 2
Year: 2022
Pages: 71–85
UDK: 550.34
DOI: 10.21455/GPB2022.2-4
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Nazaretyan S.N., Gevorgyan M.R., Igityan H.A., Mirzoyan L.B., Mughnetsyan E.A. Dynamics of changes of the seismic risk of the territory of a big city in time, due to the vulnerability of multi-apartment buildings (a case study of Yerevan) // . 2022. Т. 21. № 2. С. 71–85. DOI: 10.21455/GPB2022.2-4
@article{NazaretyanDynamics2022,
author = "Nazaretyan, S. N. and Gevorgyan, M. R. and Igityan, H. A. and Mirzoyan, L. B. and Mughnetsyan, E. A.",
title = "Dynamics of changes of the seismic risk of the territory of a big city in time, due to the vulnerability of multi-apartment buildings (a case study of Yerevan)",
journal = "Geophysical processes and biosphere",
year = 2022,
volume = "21",
number = "2",
pages = "71–85",
doi = "10.21455/GPB2022.2-4",
language = "English"
}
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Keywords: multi-apartment building, seismic vulnerability, seismic hazard, seismic risk.
Аnnotation: To reduce the seismic risk of big cities, it is important to study the dynamics of its changes, since it does not form at once, but develops over time and for various reasons. Understanding risk factors is important both to prevent risk increase and to reduce it. In this article, Yerevan, the capital city of Armenia, was chosen as the study object. High seismic risk of this city has formed mainly as a result of construction of a large number of seismically vulnerable buildings and rapid growth (migration component) of the population. Seismic risk of the area of Yerevan has been assessed 3 times, but the dynamics of its growth has not been studied. The article provides a diagram of seismic risk growth in the city of Yerevan for 1900–2018. The level of seismic risk is determined depending on the seismic hazard, the number of seismically vulnerable high-rise residential buildings and the number of residents in these buildings. It is confirmed that the alarmingly high level of seismic risk developed mainly in 1957–1989. The main factors of the increased risk are as follows: underestimation of seismic hazard, construction of a large number of multi-apartment buildings with high and medium rates of seismic vulnerability, uneven distribution of the population, etc.
