Fatigue Assessment of Reinforced Concrete Railway Bridge based on a Coupled Dynamic System
Document identifier: oai:DiVA.org:ltu-76136
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10.1080/15732479.2019.1671467Keyword: Engineering and Technology,
Matematisk analys,
Applied Mathematics,
Structural Engineering,
Byggkonstruktion,
Reinforced Concrete Railway Bridge,
Moving Spring Mass Damper Model,
Moving Load Model,
Fatigue Damage,
Train Bridge Coupling System,
Matematik,
Civil Engineering,
Naturvetenskap,
Mathematical Analysis,
Mathematics,
Natural Sciences,
Infrastrukturteknik,
Samhällsbyggnadsteknik,
Teknik och teknologier,
Infrastructure Engineering,
Tillämpad matematikPublication year: 2020Relevant Sustainable Development Goals (SDGs):
The SDG label(s) above have been assigned by OSDG.aiAbstract: This paper proposes a fatigue damage assessment methodology of a reinforced concrete bridge based on a train bridge coupled dynamic analysis system. This coupling system is composed of a vehicle a ballasted track and a bridge structure to realize a coupled vibration analysis during train passages. This methodology adopts the Palmgren Miner rule to linearly accumulate fatigue damage, and accomplishes fatigue assessment based on recommended SN relationships for reinforced concrete from various criteria. In this paper, the dynamic performances of a bridge structure are analyzed with two different vehicle models, a moving load model (and a moving spring mass damper model). Calculated dynamic stresses areused to evaluate the fatigue damage of critical positions in a reinforced concrete bridge. A case study is carried out of a railway arch bridge with a span of 89 m, Långforsen Bridge. It runs over Kalix River on the railway between Kalix and Morjärv in northern Sweden The fatigue assessment is made by combining the presented methodology with measurements. Furthermore, the effects of train speed and axle load on fatigue damage are investigated. The results indicate that good estimations of the fatigue damage assessment are made for four measured cases based on a train-bridge coupled dynamic analysis. For low speeds and light loads no difference could be seen in the cumulative fatigue damage for the two vehicle models. But high speeds and/or heavy load ssignificantly affect the fatigue damage.
Authors
Chao Wang
Luleå tekniska universitet; Byggkonstruktion och brand; South East University, Nanjing, China
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JIwen Zhang
South East University, Nanjing, China
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Yongming Tu
Luleå tekniska universitet; Byggkonstruktion och brand; South East University, Nanjing, China
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Natalia Sabourova
Luleå tekniska universitet; Byggkonstruktion och brand
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Niklas Grip
Luleå tekniska universitet; Matematiska vetenskaper
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Thomas Blanksvärd
Luleå tekniska universitet; Byggkonstruktion och brand
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Lennart Elfgren
Luleå tekniska universitet; Byggkonstruktion och brand
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identifier: oai:DiVA.org:ltu-76136
datestamp: 2021-04-19T13:07:08Z
setSpec: SwePub-ltu
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recordCreationDate: 2019-09-26
identifier:
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-76136
10.1080/15732479.2019.1671467
2-s2.0-85074260959
titleInfo:
@attributes:
lang: eng
title: Fatigue Assessment of Reinforced Concrete Railway Bridge based on a Coupled Dynamic System
abstract: This paper proposes a fatigue damage assessment methodology of a reinforced concrete bridge based on a train bridge coupled dynamic analysis system. This coupling system is composed of a vehicle a ballasted track and a bridge structure to realize a coupled vibration analysis during train passages. This methodology adopts the Palmgren Miner rule to linearly accumulate fatigue damage and accomplishes fatigue assessment based on recommended SN relationships for reinforced concrete from various criteria. In this paper the dynamic performances of a bridge structure are analyzed with two different vehicle models a moving load model (and a moving spring mass damper model). Calculated dynamic stresses areused to evaluate the fatigue damage of critical positions in a reinforced concrete bridge. A case study is carried out of a railway arch bridge with a span of 89 m Långforsen Bridge. It runs over Kalix River on the railway between Kalix and Morjärv in northern Sweden The fatigue assessment is made by combining the presented methodology with measurements. Furthermore the effects of train speed and axle load on fatigue damage are investigated. The results indicate that good estimations of the fatigue damage assessment are made for four measured cases based on a train-bridge coupled dynamic analysis. For low speeds and light loads no difference could be seen in the cumulative fatigue damage for the two vehicle models. But high speeds and/or heavy load ssignificantly affect the fatigue damage.
subject:
@attributes:
lang: eng
authority: uka.se
topic:
Engineering and Technology
Civil Engineering
Infrastructure Engineering
@attributes:
lang: swe
authority: uka.se
topic:
Teknik och teknologier
Samhällsbyggnadsteknik
Infrastrukturteknik
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lang: eng
authority: uka.se
topic:
Natural Sciences
Mathematics
Mathematical Analysis
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lang: swe
authority: uka.se
topic:
Naturvetenskap
Matematik
Matematisk analys
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lang: eng
topic: Train Bridge Coupling System
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lang: eng
topic: Fatigue Damage
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lang: eng
topic: Moving Load Model
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lang: eng
topic: Moving Spring Mass Damper Model
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lang: eng
topic: Reinforced Concrete Railway Bridge
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lang: swe
authority: ltu
topic: Byggkonstruktion
genre: Research subject
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lang: eng
authority: ltu
topic: Structural Engineering
genre: Research subject
@attributes:
lang: eng
authority: ltu
topic: Applied Mathematics
genre: Research subject
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authority: ltu
topic: Tillämpad matematik
genre: Research subject
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languageTerm: eng
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publication/journal-article
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note:
Published
7
Validerad;2020;Nivå 2;2020-04-21 (johcin)
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Chao
1991-
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Luleå tekniska universitet
Byggkonstruktion och brand
South East University Nanjing China
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JIwen
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Yongming
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Niklas
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dateIssued: 2020
publisher: Taylor & Francis
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title: Structure and Infrastructure Engineering
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