Hidden safety in equilibrium verification of a steel bridge based on wind tunnel testing

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00325380" target="_blank" >RIV/68407700:21110/19:00325380 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21610/19:00325380
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Hidden safety in equilibrium verification of a steel bridge based on wind tunnel testing
Original language description
The Cervena Bridge is a steel truss bridge built in the Czech Republic in 1886. The assessment by the partial factor method in Eurocodes reveals its insufficient reliability. In particular the bridge fails to satisfy the equilibrium limit state when strong wind occurs simultaneously with an unloaded train on the bridge. To avoid structural interventions or expensive traffic restrictions, a model of the bridge is tested in a wind tunnel to obtain force coefficients of wind pressure for the specific shape of the bridge and selected types of light-weight trains. 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 utilised to obtain distributions of weights and heights of light-weight trains. Detailed probabilistic analysis reveals that bridge reliability is close to the target level when the wind tunnel force coefficients are considered along with free-field wind and railway traffic records. It is shown that case-specific information may help to reduce numerous “hidden safeties” in reliability assessments, often included in the models for permanent actions and geometry, wind pressure, traffic load, and the combination of the last two.
Czech name
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Czech description
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Project
<a href="/en/project/TE01020168" target="_blank" >TE01020168: Centre for Effective and Sustainable Transport Infrastructure (CESTI)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Life-Cycle Analysis and Assessment in Civil Engineering. Towards an Integrated Vision
ISBN
978-1-138-62633-1
ISSN
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e-ISSN
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Number of pages
7
Pages from-to
307-313
Publisher name
Taylor & Francis/Balkema
Place of publication
Leiden
Event location
Ghent
Event date
Oct 28, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000471120400036

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