Glossary entry (derived from question below)
Polish term or phrase:
martwe styki
English translation:
frozen joints
Added to glossary by
Frank Szmulowicz, Ph. D.
Oct 17, 2020 08:13
3 yrs ago
10 viewers *
Polish term
martwe styki
Polish to English
Tech/Engineering
Transport / Transportation / Shipping
Kontekst: Brak przesunięć podłużnych szyn w torze klasycznym („martwe styki”)
Proposed translations
(English)
| 3 | frozen joints |
Frank Szmulowicz, Ph. D.
|
References
| tor klasyczny |
Frank Szmulowicz, Ph. D.
|
Change log
Oct 22, 2020 11:12: Frank Szmulowicz, Ph. D. Created KOG entry
Proposed translations
17 hrs
Frank Szmulowicz, Ph. D.
United States
United States
Native in Polish
&
English
Works in field
United States
On time, on target, on budget.
Native in: English 
, Polish
Works in: Polish to English, English to Polish, Russian to Polish, and 1 more.
Related KudoZ points
:
330
Selected
frozen joints
The real value of this resistance force varies depending on the lubrication of the joint but is influenced also on the repeated loading of the joint due to the railway traffic and other factors. The passage of the vehicles over the joint is causing significant impact forces which, in long term, tend to reduce the bolts torque, wear the contact areas but also are affecting the contact conditions between the fishplates and the rails. Due to these factors the real value of the joint resistance force can vary from practically null (when the bolt are loose) to almost 3-4 times the theoretical installation value, behaving as a “frozen joint” which is keeping the joint gap locked even for significant temperature variation.
https://pwayblog.com/2017/01/16/buckling-risk-on-jointed-tra...
https://pwayblog.com/2017/01/16/buckling-risk-on-jointed-tra...
4 KudoZ points awarded for this answer.
Comment: "Dziękuję."
Reference comments
16 hrs
Frank Szmulowicz, Ph. D.
United States
United States
Native in Polish
&
English
Works in field
United States
On time, on target, on budget.
Native in: English , Polish
Works in: Polish to English, English to Polish, Russian to Polish, and 1 more.
Related KudoZ points
:
330
Reference:
tor klasyczny
Searching the methods of defining longitudinal forces in rail in jointless track
Języki publikacji PL
Abstrakty
PL
Siły osiowe od temperatury, a w zasadzie świadomość ich występowania oraz skutków, jakie mogą za sobą pociągnąć, miały istotny wpływ na rozwój konstrukcji drogi kolejowej. Obawa przed wyboczeniem się toru powodowała, że przez wiele dziesiątków lat tor klasyczny (stykowy) stanowił jedyny stosowany rodzaj nawierzchni, a przecież od dawna znano technologię spawania termitowego, wykonywanego w warunkach terenowych.
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Note added at 16 hrs (2020-10-18 01:07:26 GMT)
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Jointed rails were used at first because contemporary technology did not offer any alternative. However, the intrinsic weakness in resisting vertical loading results in the ballast becoming depressed and a heavy maintenance workload is imposed to prevent unacceptable geometrical defects at the joints. The joints also needed to be lubricated, and wear at the fishplate (joint bar) mating surfaces needed to be rectified by shimming. For this reason jointed track is not financially appropriate for heavily operated railroads.
https://en.wikipedia.org/wiki/Track_(rail_transport)
Języki publikacji PL
Abstrakty
PL
Siły osiowe od temperatury, a w zasadzie świadomość ich występowania oraz skutków, jakie mogą za sobą pociągnąć, miały istotny wpływ na rozwój konstrukcji drogi kolejowej. Obawa przed wyboczeniem się toru powodowała, że przez wiele dziesiątków lat tor klasyczny (stykowy) stanowił jedyny stosowany rodzaj nawierzchni, a przecież od dawna znano technologię spawania termitowego, wykonywanego w warunkach terenowych.
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Note added at 16 hrs (2020-10-18 01:07:26 GMT)
--------------------------------------------------
Jointed rails were used at first because contemporary technology did not offer any alternative. However, the intrinsic weakness in resisting vertical loading results in the ballast becoming depressed and a heavy maintenance workload is imposed to prevent unacceptable geometrical defects at the joints. The joints also needed to be lubricated, and wear at the fishplate (joint bar) mating surfaces needed to be rectified by shimming. For this reason jointed track is not financially appropriate for heavily operated railroads.
https://en.wikipedia.org/wiki/Track_(rail_transport)
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