Dynamics of welded rails gap and hardness of rail base

• Autorzy: Zaitseva T. I. , Blinova I. V. , Uzdin A. M.

Identyfikatory

DOI

10.2478/ijame-2020-0015

• Języki publikacji: EN

Abstrakty

EN

The problem of gap estimation for a break of a continuous welded rail is studied. The track is represented as a semi-infinite rod on elastic-based damping. Static and dynamic solutions are obtained. It is shown that during the rail break, the dynamic factor does not exceed 1.5. We derive equations for thermal deformation of the welded rail of jointless track on an elastic foundation in the presence of the insert into the base with another characteristic stiffness. It is shown that the presence of the insertion of up to 20% of the length of the rail, with both large and small stiffness, has a little effect on the stress-strain state (SSS) of the track. The presence of a rigid insert may increase the clearance of an accidental break of the rail, which has a negative effect on traffic safety.

Słowa kluczowe

EN

continuous welded rail track; stress-strain state

PL

szyna; spawanie; naprężenie; odkształcenie

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2020
• Tom: Vol. 25, no. 1
• Strony: 236--242
• Opis fizyczny: Bibliogr. 11 poz., rys., wykr.

Twórcy

autor

Zaitseva T. I.

• Kronverkskiy, 49, St. Petersburg, 197101, RUSSIA

autor

Blinova I. V.

• Kronverkskiy, 49, St. Petersburg, 197101, RUSSIA

autor

Uzdin A. M.

• St. Petersburg State University of Transportation Moskovskiy, 9, St. Petersburg, 190031, RUSSIA

Bibliografia

• [1] Takagi R. (2005): High – speed Railways. The Last 10 Years. − Japan Railways and Transport Review, No.3, pp.4-7.
• [2] Kondratyev A. (1969): Methods of determining the horizontal longitudinal modulus of elasticity under-rail base. − Proceedings of NIIT, No.318, pp.144-148.
• [3] Novakovic M., Karpacheksky G.V., Zalavsky N.I. and Sologub S.I. (2007): How to calculate the width of the gap in continuous welded rail? − Path and Track Facilities, No.7, pp.31-34.
• [4] Andreev G.G. (1977): Thermal stresses in welded rails on bridges. − Path and Track Facilities, vol.422, pp.39-47.
• [5] Zhanga Guo-Dong and Guo Bao-Zhu (2011): On the spectrum of Euler-Bernoulli beam equation with Kelvin – Voigt damping. − Journal of Mathematical Analysis and Applications, vol.374, pp.347-358.
• [6] Beshliu V.A. (2012): Estimation of allowed gap value for welded rail rupture from the point of view of train safety. − Natural and Technical Risks. Constructions Safety, No.3, pp.56-58.
• [7] Zaitseva T.I. and Uzdin A.M. (2013): Estimation of safety for welded rail near seismic-isolated bridge. − Natural and Technical Risks. Constructions Safety, No.2, pp.32-33.
• [8] Zhgutova T.V. and Uzdin A.M. (2012): Estimation of rail track work on bridges with seismic isolation and limitations for seismic isolation. − Izvest. St. Petersburg State Univ. Transport Commun., No.3, pp.199-204.
• [9] Novakovic V.I. and Grigorieva I.A. (2001): Welded rails. − Path and Track Facilities, No.9, pp.28-32.
• [10] Peregudova M.V. and Vinogorov N.P. (2009): Welded rail track on bridges. −- Path and Track Facilities, No.3, pp.26-28.
• [11] Novakovic V.I. (1978): Stress-strain state of welded rail track under rail temperature changes. −Proceedings TashIITa, vol.148, pp.34-35.

Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020)