Naslov
Impact of Eurocode Load Model 3 on the design of highway and expressway bridges

Autori
Vlašić, Anđelko ; Srbić, Mladen ; Šavor, Zlatko ; Mandić Ivanković, Ana

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 7th International Conference on Road and Rail Infrastructures – CETRA 2022 / Lakušić, Stjepan - Zagreb : University of Zagreb Faculty of Civil Engineering Department of Transportation, 2022, 515-522

ISBN
978-953-8168-55-0

Skup
7th International Conference on Road and Rail Infrastructure

Mjesto i datum
Pula, Croatia, 11.05.2022. - 13.05.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
bridge, continuous girder, traffic load, load models, Eurocode

Sažetak
According to Eurocode HRN EN 1991-2 and Croatian National Annex HRN EN 1991-2/NA highway and expressway bridges need to be designed for Load Model 1 (heavy vehicles) and Load Model 3 (special vehicles) traffic loads. Classes of special vehicles are defined in Annex A of HRN EN 1991-2, while the Croatian National Annex requires the use of 15 axle special vehicle with total weight of 3000 kN and axle loads of 200 kN. The simultaneity of LM1 and LM2 is also covered by the standard, depending on the travel speed of the special vehicles. Design practice has shown that these design requirements have notable impact on bridges in the 30 to 100 m span range. In this paper, the results of a parametric study on a group of continuous girder bridges with different spans and carriageway widths are presented, to determine the exact difference in resulting hogging and sagging moments and shear forces between LM1 and LM3 Load Models. Thus, the governing Load Model and its effect on the design for the relevant range of bridges is determined. A recommendation is made as to when each Load Model should be used in design.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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