Using seismic prospecting data for construction of degradation curves
Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences
Journal: Problems of Engineering Seismology
Tome: 51
Number: 4
Year: 2024
Pages: 45-61
UDK: 550.344
DOI: 10.21455/VIS2024.4-4
Show citation
Aleshin
A.C A.S. Using seismic prospecting data for construction of degradation curves // . 2024. Т. 51. № 4. С. 45-61. DOI: 10.21455/VIS2024.4-4
@article{Aleshin
A.CUsing2024,
author = "Aleshin
A.C, A. S.",
title = "Using seismic prospecting data for construction of degradation curves",
journal = "Problems of Engineering Seismology",
year = 2024,
volume = "51",
number = "4",
pages = "45-61",
doi = "10.21455/VIS2024.4-4",
language = "English"
}
Copy link
Copy BibTex
Keywords: seismic microzonation, seismic exploration, nonlinear soil properties, parameters of strong earthquakes, hyperbolic model, reference deformation, curves of shear modules degradation, strength of cohesive and noncohesive soils, correlation ratios, adhesion, angle of internal friction
Аnnotation: The article considers the issues of calculating graphs of degradation of elastic soil modules in severe earthquakes using seismic prospecting data. The considered problem is of interest from the point of view of soil mechanics and is of great practical importance for ensuring the seismic safety of objects of increased responsibility, such as nuclear power plants, large hydroelectric power plants, hazardous chemical industries, etc. The role of seismic exploration in the development of seismic microzonation techniques and soil properties research is investigated. The parameters of strong earthquakes affecting the stability of soils lying in the foundations of engineering structures are considered. The simplest hyperbolic model of accounting for nonlinear processes in soils is considered. The key concept of the hyperbolic model, the reference deformation, is highlighted and its determining factors, soil strength and shear modulus, are determined. The methods of calculating these parameters by means of seismic prospecting data for the main types of soils are considered. Soils are divided into two classes in terms of strength characteristics: cohesive and noncohesive soils, and the main correlations linking the engineering-geological and seismic parameters of soils are determined. Examples of practical calculations of module degradation graphs for three types of soils are given. It is shown that in the range of loads from large earthquakes, calculations using a hyperbolic model give reliable results.