Jedan od najosjetljivijih segmenata željezničke infrastrukture svakako su mostovi. Svi čelični rešetkasti mostovi imaju drvene pragove koji su pričvršćeni za konstrukciju mosta te prilikom održavanja gornjega pružnog ustroja ne mogu mijenjati visinu. Prilikom obnove, rekonstrukcije ili zamjene dotrajalih mostova danas je praksa da se kolosiječna rešetka odvaja od konstrukcije mosta. Jedan od načina jest taj da se čelične rešetkaste konstrukcije zamjenjuju armiranobetonskim konstrukcijama u obliku korita ili, ako su rasponi veći, čeličnim konstrukcijama u obliku korita. Standardnu klasičnu kolosiječnu konstrukciju danas čine kolosijeci s betonskim pragovima i zastornom prizmom od tucaničkoga materijala. Takvi kolosijeci imaju smanjenu elastičnost, što je posebno važno na kontaktu praga i zastornoga materijala. Kako bi se smanjili negativni utjecaji vibracija i na taj način produljila trajnost kolosijeka, željezničke uprave sve češće primjenjuju AB pragove s elastičnim podlošcima. Ispitivanja su pokazala to da je ugradnjom podložaka moguće postići mirniji prolazak vlaka preko podloga različitih krutosti, čime se smanjuje mogućnost oštećenja kolosiječne konstrukcije i samoga vozila.
One of the most sensitive segments of the railway infrastructure are certainly bridges. All steel grid bridges have wooden sleeper attached to the bridge structure and cannot change the height when maintaining the upper structure rails. It has become a practice to reconstruct or replace damaged bridges in the past by taking care that the track construction is separated from the bridge constructions. One way is that steel grid structures are replaced with reinforced concrete structures in the form of a trough or if the spans are larger with steel structures in the form of a trough. The standard classical track construction today is a gangway with concrete sleepers and a ballast of crushed stone material. Such tracks have reduced elasticity, which is particularly important at contact between the sleepers and the stone material. In order to reduce the negative impacts of vibration and thus extend the durability of railway track today, railways increasingly apply concrete sleepers with under sleepers pads. Tests have shown that with the installation of the under sleeper pads it is possible to achieve a quieter passage of the train over the substrates of different stiffness, thus reducing the possibility of damage to the track construction and the vehicle itself.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.