Fatigue endurance of rib-to-deck welded joint in orthotropic steel deck panel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F26%3A00644370" target="_blank" >RIV/68378297:_____/26:00644370 - isvavai.cz</a>

Výsledek na webu

<a href="http://10.1016/j.engfailanal.2026.110553" target="_blank" >http://10.1016/j.engfailanal.2026.110553</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.engfailanal.2026.110553" target="_blank" >10.1016/j.engfailanal.2026.110553</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fatigue endurance of rib-to-deck welded joint in orthotropic steel deck panel

Popis výsledku v původním jazyce

This study presents fatigue, fractography, and numerical analyses of a prefabricated orthotropic steel deck panel that had been in service on a real bridge before undergoing a fatigue laboratory test. The study focused on rib-to-deck welded joints executed as intermittent one-sided fillet welds. Fractographic and fatigue analyses identified four typical crack types: “toe-rib”, “root-weld”, “root-deck” and “toe-deck”. The latter two types occurred only under loading parallel to the rib web, while the “root-weld” crack type was likely associated with a significant transverse shear stress component. The results indicate that the fatigue endurance of these joints is highly sensitive to shear stress. A proposed threshold for the necessity of considering shear stress influence is shear-to-normal stress ratio of 0.2 and 0.1 for the Nominal Stress and Hot Spot Stress methods, respectively. Two cracks were initially oblique toward the toe, potentially linked to grain coarsening in the heat-affected zone. Mean reference fatigue strengths were 93 MPa for the Nominal Stress and 108 MPa for the Hot Spot Stress methods, with guaranteed characteristic values of 69 MPa and 86 MPa. Considering shear stress influence as a reduction factor for the reference characteristic value for normal stressnproved ineffective.

Název v anglickém jazyce

Fatigue endurance of rib-to-deck welded joint in orthotropic steel deck panel

Popis výsledku anglicky

This study presents fatigue, fractography, and numerical analyses of a prefabricated orthotropic steel deck panel that had been in service on a real bridge before undergoing a fatigue laboratory test. The study focused on rib-to-deck welded joints executed as intermittent one-sided fillet welds. Fractographic and fatigue analyses identified four typical crack types: “toe-rib”, “root-weld”, “root-deck” and “toe-deck”. The latter two types occurred only under loading parallel to the rib web, while the “root-weld” crack type was likely associated with a significant transverse shear stress component. The results indicate that the fatigue endurance of these joints is highly sensitive to shear stress. A proposed threshold for the necessity of considering shear stress influence is shear-to-normal stress ratio of 0.2 and 0.1 for the Nominal Stress and Hot Spot Stress methods, respectively. Two cracks were initially oblique toward the toe, potentially linked to grain coarsening in the heat-affected zone. Mean reference fatigue strengths were 93 MPa for the Nominal Stress and 108 MPa for the Hot Spot Stress methods, with guaranteed characteristic values of 69 MPa and 86 MPa. Considering shear stress influence as a reduction factor for the reference characteristic value for normal stressnproved ineffective.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/CK04000042" target="_blank" >CK04000042: Identifikace a monitoring progresivní korozní i nekorozní degradace ocelových mostů pomocí platformy IoT</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2026

Kód důvěrnosti údajů

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

Název periodika

Engineering Failure Analysis

ISSN

1350-6307

e-ISSN

1873-1961

Svazek periodika

186

Číslo periodika v rámci svazku

Part B

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

21

Strana od-do

110553

Kód UT WoS článku

001664678900002

EID výsledku v databázi Scopus

2-s2.0-105027371216