2019, Vol. 6, No. 2. - go to content...

Permanent address of this page - https://t-s.today/en/15sats219.html

Метаданные этой статьи так же доступны на русском языке

DOI: 10.15862/15SATS219 (https://doi.org/10.15862/15SATS219)

Full article in PDF format (file size: 843.5 KB)

For citation:

Pestriakova E.A., Kurbatskiy E.N., Nguyen Tr.T. Response spectra of trains to earthquakes. Russian Journal of Transport Engineering. 2019; 6(2). Available at: https://t-s.today/PDF/15SATS219.pdf (in Russian). DOI: 10.15862/15SATS219

Response spectra of trains to earthquakes

Pestriakova Ekaterina Alekseevna
Russian university of transport, Moscow, Russia
E-mail: Kate.pestriakova@gmail.com

Kurbatskiy Evgeny Nikolaevich
Russian university of transport, Moscow, Russia
E-mail: Usd.miit@gmail.com

Nguyen Trong Tam
Vietnam national university, Ho Chi Minh City, Vietnam
E-mail: trongtam.nguyen@ut.edu.vn

Abstract. Currently, the construction of railways for high-speed traffic is developing intensively. Overcoming water obstacles is carried out by the construction of artificial structures such as bridges and tunnels. It often becomes necessary to cross areas with increased seismic activity by rail lines. Which, in turn, increases the likelihood of crews on bridges and in tunnels during earthquakes. With adverse combinations of dynamic parameters during earthquakes, fluctuations may occur that threaten the safety of movement. In this regard, it is necessary to evaluate the response of rolling stock to the effects of this kind. Vertical and horizontal oscillations of rolling stock during earthquakes can reach large quantities, which is fraught with serious consequences. Dynamic characteristics of locomotives and cars have significant differences. Locomotives and wagons can be of different brands, in addition, wagons can be empty and loaded. The parameters of earthquakes that can occur in a given area can also be diverse.

To solve such a complex task, the authors of the article use the widely used abroad concept of response spectra, which allows to evaluate the response of objects with different natural frequencies to all possible earthquakes.

The amplitude Fourier spectra and the spectra of the maximum reactions at speeds have the same dimensions. There is a relationship between these functions, which is used to construct response spectra if the amplitude Fourier spectrum of the ground acceleration function is known. Therefore, to construct the response spectra of the crews for earthquakes, the Fourier amplitude spectra of the base oscillations were used as the initial data.

The results presented in the article are part of the dissertation research «Assessment of the dynamic effects of railway and natural origin on underwater tunnels» Pestryakova E.A.

Keywords: Fourier spectra; Fourier transform; response spectra; maximum response spectra; tunnel seismic stability; crew oscillations in earthquakes; high-speed motion; dynamic effects

Download article in PDF format