A breather switch, expansion joint, or adjustment switch is an intentional gap in railway tracks to allow for thermal expansion in long sections of otherwise unbroken rail. They are placed between very long sections of continuous welded rail or at the transition from continuous welded rail to jointed track, and commonly in the vicinity of bridges, viaducts and tunnels where the infrastructure and track may expand at different rates.[1]
The mating sections are tapered diagonally (unlike a butt joint between two lengths of rail), allowing smoother transitions and higher speeds across the gap.[2]
Breather switches have two advantages over jointed track: they greatly reduce the small gap between the rails, eliminating or significantly reducing the noise and vibration caused by passing trains, and, where continuous welded rail is particularly prone to expansion, they act as relief points to ensure that track does not warp out of shape or result in a sun kink.[3]
^Briginshaw, David (2016-03-08). "British university to build prototype switch". International Railway Journal. Retrieved 2023-02-13.
^Kampczyk, Arkadiusz (2020-08-10). "Measurement of the Geometric Center of a Turnout for the Safety of Railway Infrastructure Using MMS and Total Station". Sensors. 20 (16): 4467. doi:10.3390/s20164467. ISSN 1424-8220. PMC7472250. PMID 32785082.
^Hoather, Ian; Mandal, Nirmal (May 2016). "Management of Rail Stress in a Modern Railway Maintenance Infrastructure". Researchgate.
Loughborough University unveils breakthrough technology with potential to revolutionise the global rail industry 9 September 2015
External Websitesedit
Voestalpine Expansion switches
Breather switches
Expanding our understanding of the not so insignificant rail expansion joint
Rail Structure interaction
This rail-transport related article is a stub. You can help Wikipedia by expanding it.
breather, switch, also, expansion, joint, breather, switch, expansion, joint, adjustment, switch, intentional, railway, tracks, allow, thermal, expansion, long, sections, otherwise, unbroken, rail, they, placed, between, very, long, sections, continuous, welde. See also Expansion joint A breather switch expansion joint or adjustment switch is an intentional gap in railway tracks to allow for thermal expansion in long sections of otherwise unbroken rail They are placed between very long sections of continuous welded rail or at the transition from continuous welded rail to jointed track and commonly in the vicinity of bridges viaducts and tunnels where the infrastructure and track may expand at different rates 1 The mating sections are tapered diagonally unlike a butt joint between two lengths of rail allowing smoother transitions and higher speeds across the gap 2 Breather switches have two advantages over jointed track they greatly reduce the small gap between the rails eliminating or significantly reducing the noise and vibration caused by passing trains and where continuous welded rail is particularly prone to expansion they act as relief points to ensure that track does not warp out of shape or result in a sun kink 3 Expansion joint on Williamsburg Bridge New York City Subway A breather switch on a TGV line An expansion joint on the Cornish Main Line EnglandReferences edit Briginshaw David 2016 03 08 British university to build prototype switch International Railway Journal Retrieved 2023 02 13 Kampczyk Arkadiusz 2020 08 10 Measurement of the Geometric Center of a Turnout for the Safety of Railway Infrastructure Using MMS and Total Station Sensors 20 16 4467 doi 10 3390 s20164467 ISSN 1424 8220 PMC 7472250 PMID 32785082 Hoather Ian Mandal Nirmal May 2016 Management of Rail Stress in a Modern Railway Maintenance Infrastructure Researchgate Loughborough University unveils breakthrough technology with potential to revolutionise the global rail industry 9 September 2015External Websites editVoestalpine Expansion switches Breather switches Expanding our understanding of the not so insignificant rail expansion joint Rail Structure interaction nbsp This rail transport related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Breather switch amp oldid 1149636807, wikipedia, wiki, book, books, library,
