Cargando…

Fatigue Life Estimation for Suspenders of a Three-Pylon Suspension Bridge Based on Vehicle–Bridge-Interaction Analysis

Fatigue damage of suspenders is a main concern during the life-cycle maintenance of arch bridges and suspension bridges. This paper presents a practical framework for estimating the fatigue life of suspenders under repeated traffic loads by taking a three-pylon suspension bridge as an example. First...

Descripción completa

Detalles Bibliográficos
Autores principales: Cui, Chuanjie, Chen, Airong, Ma, Rujin, Wang, Benjin, Xu, Shiqiao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6721150/
https://www.ncbi.nlm.nih.gov/pubmed/31426377
http://dx.doi.org/10.3390/ma12162617
_version_ 1783448281254199296
author Cui, Chuanjie
Chen, Airong
Ma, Rujin
Wang, Benjin
Xu, Shiqiao
author_facet Cui, Chuanjie
Chen, Airong
Ma, Rujin
Wang, Benjin
Xu, Shiqiao
author_sort Cui, Chuanjie
collection PubMed
description Fatigue damage of suspenders is a main concern during the life-cycle maintenance of arch bridges and suspension bridges. This paper presents a practical framework for estimating the fatigue life of suspenders under repeated traffic loads by taking a three-pylon suspension bridge as an example. First, the basic theory of vehicle–bridge interaction (VBI) is introduced and a finite element model of the bridge structure is established. Second, the fatigue load spectrum is defined in detail based on the analysis of WIM (weigh-in-motion) data. And then, parametric analysis is carried out to clarify the influence of road roughness, vehicle speed, and driving lanes. Among which, the time-dependent stress laws are simulated according to the defined fatigue load spectrum and the stress range is counted through the Rain flow counting method. At last, the fatigue life of uncorroded suspenders and naturally corroded suspenders is estimated by an S–N curve and Miner cumulative damage criterion. Results reveal that the fatigue life of suspenders is more than 100 years if no corrosion happens, while less than 20 years for short suspenders considering the influence of natural corrosion.
format Online
Article
Text
id pubmed-6721150
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-67211502019-09-10 Fatigue Life Estimation for Suspenders of a Three-Pylon Suspension Bridge Based on Vehicle–Bridge-Interaction Analysis Cui, Chuanjie Chen, Airong Ma, Rujin Wang, Benjin Xu, Shiqiao Materials (Basel) Article Fatigue damage of suspenders is a main concern during the life-cycle maintenance of arch bridges and suspension bridges. This paper presents a practical framework for estimating the fatigue life of suspenders under repeated traffic loads by taking a three-pylon suspension bridge as an example. First, the basic theory of vehicle–bridge interaction (VBI) is introduced and a finite element model of the bridge structure is established. Second, the fatigue load spectrum is defined in detail based on the analysis of WIM (weigh-in-motion) data. And then, parametric analysis is carried out to clarify the influence of road roughness, vehicle speed, and driving lanes. Among which, the time-dependent stress laws are simulated according to the defined fatigue load spectrum and the stress range is counted through the Rain flow counting method. At last, the fatigue life of uncorroded suspenders and naturally corroded suspenders is estimated by an S–N curve and Miner cumulative damage criterion. Results reveal that the fatigue life of suspenders is more than 100 years if no corrosion happens, while less than 20 years for short suspenders considering the influence of natural corrosion. MDPI 2019-08-16 /pmc/articles/PMC6721150/ /pubmed/31426377 http://dx.doi.org/10.3390/ma12162617 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Cui, Chuanjie
Chen, Airong
Ma, Rujin
Wang, Benjin
Xu, Shiqiao
Fatigue Life Estimation for Suspenders of a Three-Pylon Suspension Bridge Based on Vehicle–Bridge-Interaction Analysis
title Fatigue Life Estimation for Suspenders of a Three-Pylon Suspension Bridge Based on Vehicle–Bridge-Interaction Analysis
title_full Fatigue Life Estimation for Suspenders of a Three-Pylon Suspension Bridge Based on Vehicle–Bridge-Interaction Analysis
title_fullStr Fatigue Life Estimation for Suspenders of a Three-Pylon Suspension Bridge Based on Vehicle–Bridge-Interaction Analysis
title_full_unstemmed Fatigue Life Estimation for Suspenders of a Three-Pylon Suspension Bridge Based on Vehicle–Bridge-Interaction Analysis
title_short Fatigue Life Estimation for Suspenders of a Three-Pylon Suspension Bridge Based on Vehicle–Bridge-Interaction Analysis
title_sort fatigue life estimation for suspenders of a three-pylon suspension bridge based on vehicle–bridge-interaction analysis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6721150/
https://www.ncbi.nlm.nih.gov/pubmed/31426377
http://dx.doi.org/10.3390/ma12162617
work_keys_str_mv AT cuichuanjie fatiguelifeestimationforsuspendersofathreepylonsuspensionbridgebasedonvehiclebridgeinteractionanalysis
AT chenairong fatiguelifeestimationforsuspendersofathreepylonsuspensionbridgebasedonvehiclebridgeinteractionanalysis
AT marujin fatiguelifeestimationforsuspendersofathreepylonsuspensionbridgebasedonvehiclebridgeinteractionanalysis
AT wangbenjin fatiguelifeestimationforsuspendersofathreepylonsuspensionbridgebasedonvehiclebridgeinteractionanalysis
AT xushiqiao fatiguelifeestimationforsuspendersofathreepylonsuspensionbridgebasedonvehiclebridgeinteractionanalysis