Probabilistic assessment of the equilibrium of a steel railway bridge based on wind tunnel and traffic records

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F24%3A00576868" target="_blank" >RIV/68378297:_____/24:00576868 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21110/24:00366853 RIV/68407700:21610/24:00366853

Výsledek na webu

<a href="https://doi.org/10.1080/10168664.2023.2188341" target="_blank" >https://doi.org/10.1080/10168664.2023.2188341</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/10168664.2023.2188341" target="_blank" >10.1080/10168664.2023.2188341</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Probabilistic assessment of the equilibrium of a steel railway bridge based on wind tunnel and traffic records

Popis výsledku v původním jazyce

The European railway network includes many steel truss girder bridges, often dating back to the end of the nineteenth century. Assessment by the partial factor method according to Eurocodes often reveals insufficient reliability of these bridges. In particular, they fail to satisfy the equilibrium limit state when a strong wind occurs simultaneously with an unloaded train crossing the bridge. To avoid unnecessary structural interventions and expensive traffic restrictions, representative types of these bridges are tested in a wind tunnel to refine the force coefficients of wind pressure for the specific shape of the bridge and selected types of lightweight train. The values of force coefficients based on wind tunnel tests correspond to 70–80% of those provided in EN 1991–1–4. Traffic flow records for the railway line under consideration are then utilised to obtain distributions of weights and heights of lightweight trains. Detailed probabilistic analysis focused on a long-span truss bridge with an intermediate bridge deck demonstrates that the reliability of this bridge is close to the target reliability level when wind tunnel force coefficients are considered along with site-specific free-field wind and railway traffic records.

Název v anglickém jazyce

Probabilistic assessment of the equilibrium of a steel railway bridge based on wind tunnel and traffic records

Popis výsledku anglicky

The European railway network includes many steel truss girder bridges, often dating back to the end of the nineteenth century. Assessment by the partial factor method according to Eurocodes often reveals insufficient reliability of these bridges. In particular, they fail to satisfy the equilibrium limit state when a strong wind occurs simultaneously with an unloaded train crossing the bridge. To avoid unnecessary structural interventions and expensive traffic restrictions, representative types of these bridges are tested in a wind tunnel to refine the force coefficients of wind pressure for the specific shape of the bridge and selected types of lightweight train. The values of force coefficients based on wind tunnel tests correspond to 70–80% of those provided in EN 1991–1–4. Traffic flow records for the railway line under consideration are then utilised to obtain distributions of weights and heights of lightweight trains. Detailed probabilistic analysis focused on a long-span truss bridge with an intermediate bridge deck demonstrates that the reliability of this bridge is close to the target reliability level when wind tunnel force coefficients are considered along with site-specific free-field wind and railway traffic records.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Structural Engineering International

ISSN

1016-8664

e-ISSN

1683-0350

Svazek periodika

34

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

34-44

Kód UT WoS článku

001019893800001

EID výsledku v databázi Scopus

2-s2.0-85163773671