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Dynamic Behaviour of Bridge Girders with Trapezoidal Profiled Webs Subjected to Moving Loads
The aim of this study is to find out the degradation of dynamic behaviour of bridge girders with trapezoidal profiled webs when subjected to different vehicle moving loads. Finite element modelling based parametric analysis is demonstrated to be desirable in capturing the dynamic deflection and stre...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7795918/ https://www.ncbi.nlm.nih.gov/pubmed/33374199 http://dx.doi.org/10.3390/ma14010038 |
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author | Wang, Zhiyu Shi, Yunzhong You, Xiang Jiang, Ruijuan Gai, Weiming |
author_facet | Wang, Zhiyu Shi, Yunzhong You, Xiang Jiang, Ruijuan Gai, Weiming |
author_sort | Wang, Zhiyu |
collection | PubMed |
description | The aim of this study is to find out the degradation of dynamic behaviour of bridge girders with trapezoidal profiled webs when subjected to different vehicle moving loads. Finite element modelling based parametric analysis is demonstrated to be desirable in capturing the dynamic deflection and stress state of critical structural details of girders. The model is validated in the modal analysis through a comparison with theoretical eigenfrequencies. The vibration characteristics are shown to be significantly affected by the corrugation details. The structural service life results of analysed bridge girders are in close agreement with experimental data. It is shown that the dynamic nodal velocity and deflection of analysed bridge girders are greatly affected by the magnitude of the load corresponding to the overload of the vehicle in contrast to the vehicle travel speed. Similar observations can be made for the fatigue life prediction analysis related to the crack initiation when unfavourable effects of the overload vehicle are concerned. Presented analytical results using a fracture mechanics approach could be taken as a good basis for the service life assessment of related bridges with the desired level of performance or functionality. |
format | Online Article Text |
id | pubmed-7795918 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-77959182021-01-10 Dynamic Behaviour of Bridge Girders with Trapezoidal Profiled Webs Subjected to Moving Loads Wang, Zhiyu Shi, Yunzhong You, Xiang Jiang, Ruijuan Gai, Weiming Materials (Basel) Article The aim of this study is to find out the degradation of dynamic behaviour of bridge girders with trapezoidal profiled webs when subjected to different vehicle moving loads. Finite element modelling based parametric analysis is demonstrated to be desirable in capturing the dynamic deflection and stress state of critical structural details of girders. The model is validated in the modal analysis through a comparison with theoretical eigenfrequencies. The vibration characteristics are shown to be significantly affected by the corrugation details. The structural service life results of analysed bridge girders are in close agreement with experimental data. It is shown that the dynamic nodal velocity and deflection of analysed bridge girders are greatly affected by the magnitude of the load corresponding to the overload of the vehicle in contrast to the vehicle travel speed. Similar observations can be made for the fatigue life prediction analysis related to the crack initiation when unfavourable effects of the overload vehicle are concerned. Presented analytical results using a fracture mechanics approach could be taken as a good basis for the service life assessment of related bridges with the desired level of performance or functionality. MDPI 2020-12-24 /pmc/articles/PMC7795918/ /pubmed/33374199 http://dx.doi.org/10.3390/ma14010038 Text en © 2020 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 Wang, Zhiyu Shi, Yunzhong You, Xiang Jiang, Ruijuan Gai, Weiming Dynamic Behaviour of Bridge Girders with Trapezoidal Profiled Webs Subjected to Moving Loads |
title | Dynamic Behaviour of Bridge Girders with Trapezoidal Profiled Webs Subjected to Moving Loads |
title_full | Dynamic Behaviour of Bridge Girders with Trapezoidal Profiled Webs Subjected to Moving Loads |
title_fullStr | Dynamic Behaviour of Bridge Girders with Trapezoidal Profiled Webs Subjected to Moving Loads |
title_full_unstemmed | Dynamic Behaviour of Bridge Girders with Trapezoidal Profiled Webs Subjected to Moving Loads |
title_short | Dynamic Behaviour of Bridge Girders with Trapezoidal Profiled Webs Subjected to Moving Loads |
title_sort | dynamic behaviour of bridge girders with trapezoidal profiled webs subjected to moving loads |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7795918/ https://www.ncbi.nlm.nih.gov/pubmed/33374199 http://dx.doi.org/10.3390/ma14010038 |
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