Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Jan Valehrach"'
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 43 (2023)
The article focuses on the recycled materials used in sleeper substructure. In the introduction, it summarizes the requirements for bearing layers of railway substructure and recycling of waste construction materials. The article presents the materia
Externí odkaz:
https://doaj.org/article/03712e8a383d4e618ba4ac510a60b54c
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 35, Pp 54–60-54–60 (2022)
The aim of this paper is to verify the real behavior of the continuous welded rail on the bridge with a longer expansion length than allowed by Czech national regulations. Special attention is focused on the rate of interaction of the continuous weld
Externí odkaz:
https://doaj.org/article/1623ce8378ba47c2a77180174a4cdcf4
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 35, Pp 49–53-49–53 (2022)
The paper deals with the phenomenon of long-pitch corrugation in curves of the small radii and also the effects that accelerate or slow down its development. The paper presents data from sections of railway track measured for new rails, rails before
Externí odkaz:
https://doaj.org/article/ff24016446144d589ddd5db502b56991
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 11, Iss 0, Pp 80-85 (2017)
The paper deals with the evaluation of measured speeds of the vehicles on the chosen sections of the railway network in the Czech Republic. In connection with the phased implementation of the AVV system (automatic train operation) and the European ET
Externí odkaz:
https://doaj.org/article/c4ca48317ded40148ddfc3f4ad404cee
Autor:
Jan Valehrach, Jaroslav Šmíd
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 5, Iss 0, Pp 63-68 (2016)
The focus of this paper lies on monitoring of the track sections with rail corrugations caused by wheel sliding. Short waves on the running surface of the rail head on low rail are typical for this defect. Long-pitch corrugation is a significant caus
Externí odkaz:
https://doaj.org/article/7701d81a9d644b53be00c9a1fe7f6b8d
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 11, Iss 0, Pp 80-85 (2017)
The paper deals with the evaluation of measured speeds of the vehicles on the chosen sections of the railway network in the Czech Republic. In connection with the phased implementation of the AVV system (automatic train operation) and the European ET
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47384c8353c7cb0988179aaaa69dd25f
https://ojs.cvut.cz/ojs/index.php/APP/article/view/4460
https://ojs.cvut.cz/ojs/index.php/APP/article/view/4460
Autor:
Jaroslav Šmíd, Jan Valehrach
Publikováno v:
Acta Polytechnica CTU Proceedings. 2016, vol. 5, issue 1, p. 63-68.
Acta Polytechnica CTU Proceedings, Vol 5, Iss 0, Pp 63-68 (2016)
Acta Polytechnica CTU Proceedings, Vol 5, Iss 0, Pp 63-68 (2016)
The focus of this paper lies on monitoring of the track sections with rail corrugations caused by wheel sliding. Short waves on the running surface of the rail head on low rail are typical for this defect. Long-pitch corrugation is a significant caus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c01f1d79388bbdea527fdbb20f4a97f6
https://hdl.handle.net/11012/203134
https://hdl.handle.net/11012/203134
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 2017, vol. 236, issue 1, p. 1-8.
The paper focuses on defects of the running surface of the rail, namely the rail corrugation defect and specifically long-pitch corrugation in curves of small radii. These defects cause a shorter life of the rails, greater maintenance costs and incre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64541305a5e3c60298302c23f1eff985
https://doi.org/10.1088/1757-899x/236/1/012048
https://doi.org/10.1088/1757-899x/236/1/012048
Publikováno v:
IOP Conference Series: Materials Science & Engineering; Sep2017, Vol. 236 Issue 1, p1-1, 1p