Determination of in situ elastic properties of roadbed railway by seismic observations
G.N. Antonovskaya1, I.P. Dobrovolsky2, N.K. Kapustian1,2, I.P. Orlova2
1 N. Laverov Federal Center for Integrated Arctic Research of the Russian Academy of Sciences, Arkhangelsk, Russia
2 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia
Corresponding author: G.N. Antonovskaya, e-mail: essm.ras@gmail.com
Abstract. The possibility of determining of roadbed railway elastic parameters is shown by the seismic observations results of vibrations generated by passing train. The rationale for the monitoring method is obtained by analyzing our own experimental data and theoretical calculations with a good agreement between the theory and experiment. As the method part, we considered the requirements for seismic equipment and indicated the most suitable types of them (Trillium Compact-120s is the best) that can be located near the roadbed at a safe distance from it. Such sensor with the appropriate data logger and seismic data processing program can be included in the methods' set for state roadbed railway monitoring. These estimates of the proposed method resolution show that it is sufficiently sensitive to detect the deformation soils properties at an early degradation stage, which is especially important for permafrost soils.
Keywords: roadbed railway, substructure, vibrations generated by passing train, seismic equipment, elastic theory calculation
About the authors
ANTONOVSKAYA Galina Nikolaevna – Doctor of Technical Sciences, Deputy Director for Science, Head of the Laboratory of Seismology, N. Laverov Federal Center for Integrated Arctic Research of the Russian Academy of Sciences. 163000, Arkhangelsk, nab. Severnoi Dviny, 23. E-mail: essm.ras@gmail.com
DOBROVOLSKY Igor Petrovich – Doctor of Physical and Mathematical Sciences, Associate Professor, Chief Researcher, Schmidt Institute of Physics of the Earth, Russian Academy of Sciences. Russia, 123242, Moscow, ul. Bolshaya Gruzinskaya 10, building 1. E-mail: dipedip@gmail.com
KAPUSTIAN Natalia Konstantinovna – Doctor of Physical and Mathematical Sciences, Chief Researcher, Schmidt Institute of Physics of the Earth, Russian Academy of Sciences. Russia. 123242, Moscow, ul. Bolshaya Gruzinskaya 10, building 1; Senior Researcher, N. Laverov Federal Center for Integrated Arctic Research of the Russian Academy of Sciences. 163000, Arkhangelsk, nab. Severnoi Dviny, 23. Email: nkapustian@gmail.com
ORLOVA Irina Petrovna – Researcher, Schmidt Institute of Physics of the Earth, Russian Academy of Sciences. 123242, Moscow, ul. Bolshaya Gruzinskaya 10, building 1. E-mail: i.p.kachan@gmail.com
Cite this article as: Antonovskaya G.N., Dobrovolsky I.P., Kapustian N.K., Orlova I.P. Determination of in situ elastic properties of roadbed railway by seismic observations, Seismicheskie Pribory, 2020, vol. 56, no. 1, pp. 44–55. (in Russian). https://doi.org/10.21455/si2020.1-4
English translation of the article will be published in Seismic Instruments, ISSN: 0747-9239 (Print) 1934-7871 (Online), https://link.springer.com/journal/11990).