THE COUPLING ELEMENT CALCULATION OF COMBINED WOODEN BAR FOR TURNOUTS

Authors

DOI:

https://doi.org/10.15802/stp2015/57029

Keywords:

sleeper, beam, elastic foundation, nag connection, finite difference method

Abstract

Purpose. The deficit of permanent way (PW) material elements leads to a revision of the re-use of old serviceable object after their replacement or repair. As an example is the following fact, that after the wear in the under-rail area of wooden sleepers and beams, or other defects that prevent their further exploitation, there is an acute issue of their planned replacement. Usually, the required minimum margin of sleepers is always in the track service brigades. As for the wooden beams the length of which in the turnouts is up to 5 m, there is not always possible quickly replace them due to the lack of size in the short term. Therefore, the geometric dimensions of the connect elements of the two halves of the beams or sleepers in a single rigid structure were proposed and justified and its characteristics do not differ from solid beam. Methodology. The authors considered the calculation algorithm of wooden elements connection and mathematical models that describe the elastic properties of base. The most adequate technique that fully characterizes the interactions beam in the form of a beam of finite length on the ballast was determined. Findings. The qualitative and quantitative verification of the results showed a very good agreement between the values of bending moments, shear forces and deflections that were obtained by the finite difference method (FDM) and the analytical method. It gives the reason to believe that the received geometric dimensions of nag connection can be recommended to employees of track facilities to connect the wooden sleepers on the switches and crossovers. Originality. The nag connection geometrical sizes of two wooden sleepers in the beam for using on switches were substantiated. Practical value. The proposed joint design allows re-using of renovated old wooden sleepers and bars. This design can be applied not only for the connection of conventional wooden sleepers in the beam of desired length, but also to create the halves of a single sleeper designs for lightly loaded sections of the station and access routes.

Author Biographies

O. M. Patlasov, Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan

Dep. «Railway Track and Track Facilities», Lazaryan St., 2, Dnipropetrovsk, Ukraine, 49010, tel. +38 (056) 373 15 42

S. O. Tokariev, Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan

Dep. «Railway Track and Track Facilities», Lazaryan St., 2, Dnipropetrovsk, Ukraine, 49010, tel. +38 (056) 373 15 42

References

Gorskiy A.I., Ivanov-Emin Ye.B., Karenovskiy A.I. Opredeleniye dopuskayemykh napryazheniy pri raschete na prochnost [Definition of allowable stress when calculating the strength]. Moscow, NIImash Publ., 1974. 95 p.

Danilenko E.I., Rybkin V.V. Pravyla rozrakhunkiv zaliznychnoi kolii na mitsnist i stiikist: TsP–0117 [Rules of calculations of the railway track strength and stability: TsP–0117]. Kyiv, Transport Ukrainy Publ., 2005. 119 p.

Danovich V.D., Zakapko V.Ya., Patlasov A.M. Analiz raboty podshpalnogo osnovaniya pod deystviyem dinamicheskoy zagruzki [Analysis of under sleeper base under the dynamic loading]. Transport: Zbirnyk naukovykh prats DIITu [Transport: Proc. of Dnipropetrovsk Institution of Transport Engineers], 1999, vol. 4, pp. 23-30.

DBN V.2.6–161:2010. Konstruktsii budynkiv i sporud. Dereviani konstruktsii. Osnovni polozhennia [State building standart V. 2.6-161:2010. Design of buildings and structures. A wooden structure. The main provisions]. Kyiv, 2011. 284 p.

Zolotarskiy A.F., Yevdokimov B.A., Isayev N.M. Zhelezobetonnye shpaly dlya relsovogo puti [Concrete sleepers for rail track]. Moscow, Transport Publ., 1980. 270 p.

Idimeshev S.V. Raschet napryazhenno-deformirovannogo sostoyaniya izotropnykh pryamougolnykh plastin na uprugom osnovanii [The calculation of stress-strain state of isotropic rectangular plates on elastic foundation]. Izvestiya altayskogo gosudarstvennogo universiteta [News of Altai State University]. Barnaul, 2014, no.1 (81), vol. 1, pp. 53-56.

Danilenko E.I.,Orlovskyi A.M., Kurhan M.B., Yakovliev V.O. Instruktsiia z ulashtuvannia ta utrymannia kolii zaliznyts Ukrainy: TsP-0269 [Instruction for installation and maintenance of the tracks of the Railways of Ukraine of the TsP-0269]. Kyiv, Polihrafservis Publ., 2012. 465 p.

Kurhan, D.M. Do vyrishennia zadach rozrakhunku kolii na mitsnist iz urakhuvanniam nerivnopruzhnosti pidreikovoi osnovy [To the solution of problems about the railways calculation for strength taking into account unequal elasticity of the subrail base]. Nauka ta prohres transportu. Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu – Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport, 2015, no. 1 (55), pp. 90-99. doi: 10.15802/stp2015/38250

Lebedev A.V. Chislennyye metody rascheta stroitelnykh konstruktsiy [Numerical methods of calculation of building structures]. Saint-Petersburg, SPbGASU Publ., 2012. 55 p.

Martseniuk L.V. Poslidovnist ta etapnist provedennia reform na zaliznychnomu transporti [The sequence and phasing of reforms in railway transport]. Problemy ekonomiky transportu: zbirnyk naukovykh prats Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [The problems of transport economy: Proc. of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2011, vol. 1, pp. 88-95.

Rudakov O.H. Derzhavna prohrama reformuvannia zaliznychnoho transportu na 2009–2015 roky: problemy ta shliakhy vyrishennia [The state program of reforming railway transport for the period 2009-2015: problems and solutions]. Ukrainskyi sotsium – Ukrainian Society, 2010, vol. 2, pp. 133-143.

Sikachenko V.M. K voprosu o klassifikatsii raschetnykh modeley gruntovykh osnovaniy [To the question of classification of computational models of soil bases]. Dorogi i mosty [Ways and bridges]. Moscow, 2008, vol. 19/1, pp. 70-85.

Sargsyan A.Ye., Demchenko A.T., Dvoryanchikov N.V., Dzhinchvelashvili G.A. Stroitelnaya mekhanika. Osnovy teorii s primerami raschetov [Building mechanics. Basic theory with examples of calculations]. Moscow, Vysshaya shkola Publ., 2000. 416 p.

Transportna stratehiia Ukrainy na period do 2020 roku [The transport strategy of Ukraine for the period till 2020]. Available at: http://zakon1.rada. gov.ua/ laws/show/2174-2010- %D1%80 (Accessed 4 November 2015).

Al-Azzawi A.A., Theeban D.M. Large Deflection of Deep Beams on Elastic Foundations. Journal of the Serbian Society for Computational Mechanics, 2010, vol. 4, no. 1, pp. 88-101

Dinev D. Analytical solution of beam on elastic foundation by singularity functions. Engineering Mechanics, 2012, vol. 19, no. 6, pp. 381-392.

Griffiths D.V., Paiboon J., Huang J., Fenton G.A. Reliability analysis of beams on random elastic foundations. Ge´otechnique, 2013, vol. 63, issue 2, pp. 180-188. doi: 10.1680/geot.11.P.127

Teodoru I.B., Musat V., Vrabie M. A Finite Element Study of the Bending Behavior of Beams Resting on Two-Parameter Elastic Foundation. Buletinul Institutului Politehnic din Iasi, Tomul LII (LVI), Fasc. 3–4, 2006, pp. 7-20.

Published

2015-12-24

How to Cite

Patlasov, O. M., & Tokariev, S. O. (2015). THE COUPLING ELEMENT CALCULATION OF COMBINED WOODEN BAR FOR TURNOUTS. Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport, (6(60), 88–100. https://doi.org/10.15802/stp2015/57029

Issue

Section

RAILROAD AND ROADWAY NETWORK