Experimental confirmation of the problem of railway embankment material shear modulus definition
1 N. Laverov Federal Center for Integrated Arctic Research, Ural Branch, Russian Academy of Sciences
2 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
3 Russian University of Transport MIIT
Journal: Problems of Engineering Seismology
Tome: 50
Number: 3
Year: 2023
Pages: 79-84
UDK: 550.34, 624.44
DOI: 10.21455/VIS2023.3-6
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Antonovskaya
N.K G.N. Experimental confirmation of the problem of railway embankment material shear modulus definition
// . 2023. Т. 50. № 3. С. 79-84. DOI: 10.21455/VIS2023.3-6
@article{Antonovskaya
N.KExperimental2023,
author = "Antonovskaya
N.K, G. N.",
title = "Experimental confirmation of the problem of railway embankment material shear modulus definition
",
journal = "Problems of Engineering Seismology",
year = 2023,
volume = "50",
number = "3",
pages = "79-84",
doi = "10.21455/VIS2023.3-6",
language = "English"
}
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Keywords: railway embankment, broadband seismometer, amplitude, shear module
Аnnotation: Experimental examples confirming the analytical solution of the shear modulus determination of the railway embankment material are presented. We carried out continuous registration of passing trains by a broadband seismometer. Records after filtering in the 0.01–1.25 Hz band (determined by the problem statement) were compared with a theoretical seismogram. It is shown that the results of calculations and experiment coincide not only qualitatively but also quantitatively. To obtain the best similarity to the experimental data, the values of the shear modulus were iterated in the calculations. It is proved that the magnitude of the amplitude of the vertical component first extremum Az is determined mainly by the shear modulus of the embankment material. The influence of train weight can be minimized by statistical analysis of Az values. The sensitivity of median Az values variations to seasonal deformation changes in soils is shown. The result is the basis of the developed technology of seismic vibration diagnostics of the railway roadbed.