Assessment of the Strengthening of an RC Railway Bridge with CFRP utilizing a Full-Scale Failure Test and Finite-Element Analysis
A finite element (FE) model was calibrated using the data obtained from a full-scale test to failure of a 50 year old reinforced concrete (RC) railway bridge. The model was then used to assess the effectiveness of various strengthening schemes to increase the loadcarrying capacity of the bridge. The...
Published in: | Journal of Structural Engineering |
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Language: | English |
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Luleå tekniska universitet, Byggkonstruktion och -produktion
2015
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-15842 https://doi.org/10.1061/(ASCE)ST.1943-541X.0001116 |
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ftluleatu:oai:DiVA.org:ltu-15842 2023-05-15T17:45:12+02:00 Assessment of the Strengthening of an RC Railway Bridge with CFRP utilizing a Full-Scale Failure Test and Finite-Element Analysis Puurula, Arto Enochsson, Ola Sas, Gabriel Blanksvärd, Thomas Ohlsson, Ulf Bernspång, Lars Täljsten, Björn Carolin, Anders Paulsson, Björn Elfgren, Lennart 2015 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-15842 https://doi.org/10.1061/(ASCE)ST.1943-541X.0001116 eng eng Luleå tekniska universitet, Byggkonstruktion och -produktion NORUT, Narvik, NO 8517, Norway Trafikverket, SE 97 125 Luleå, Sweden Trafikverket, SE 78 189 Borlänge,Sweden Journal of Structural Engineering, 0733-9445, 2015, 141:1 (Special Issue), s. D4014008-1-D4014008-11 orcid:0000-0002-8682-876X orcid:0000-0002-5154-7044 orcid:0000-0001-5187-2552 orcid:0000-0001-7799-5809 orcid:0000-0002-0560-9355 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-15842 doi:10.1061/(ASCE)ST.1943-541X.0001116 ISI:000346338100011 Scopus 2-s2.0-84920771165 Local f66f5694-cfe1-40be-a43e-24618eb23eae info:eu-repo/semantics/openAccess Bridge Train load Failure analysis Ultimate load-carrying capacity Shear Near-surfacemounted reinforcement (NSMR) Infrastructure Engineering Infrastrukturteknik Article in journal info:eu-repo/semantics/article text 2015 ftluleatu https://doi.org/10.1061/(ASCE)ST.1943-541X.0001116 2022-10-25T20:58:51Z A finite element (FE) model was calibrated using the data obtained from a full-scale test to failure of a 50 year old reinforced concrete (RC) railway bridge. The model was then used to assess the effectiveness of various strengthening schemes to increase the loadcarrying capacity of the bridge. The bridge was a two-span continuous single-track trough bridge with a total length of 30 m, situated in Örnsköldsvik in northern Sweden. It was tested in situ as the bridge had been closed following the construction of a new section of the Railway line. The test was planned to evaluate and calibrate models to predict the load-carrying capacity of the bridge and assess the strengthening schemes originally developed by the European research project called Sustainable bridges. The objective of the test was to investigate shear failure, rather than bending failure for which good calibrated models are already available. To that end, the bridge was strengthened in flexure before the test using near-surface mounted square section carbon fiber reinforced polymer (CFRP) bars. The ultimate failure mechanism turned into an interesting combination of bending, shear, torsion, and bond failures at an applied load of 11.7 MN (2,630 kips). A computer model was developed using specialized software to represent the response of the bridge during the test. It was calibrated using data from the test and was then used to calculate the actual capacity of the bridge in terms of train loading using the current Swedish load model which specifies a 330 kN (74 kips) axle weight. These calculations show that the unstrengthened bridge could sustain a load 4.7 times greater than the current load requirements (which is over six times the original design loading), whilst the strengthened bridge could sustain a load 6.5 times greater than currently required. Comparisons are also made with calculations using codes from Canada, Europe, and the United States. Validerad; 2015; Nivå 2; Bibliografisk uppgift: This work is made available under the terms of ... Article in Journal/Newspaper Northern Sweden Luleå University of Technology Publications (DiVA) Canada Journal of Structural Engineering 141 1 |
institution |
Open Polar |
collection |
Luleå University of Technology Publications (DiVA) |
op_collection_id |
ftluleatu |
language |
English |
topic |
Bridge Train load Failure analysis Ultimate load-carrying capacity Shear Near-surfacemounted reinforcement (NSMR) Infrastructure Engineering Infrastrukturteknik |
spellingShingle |
Bridge Train load Failure analysis Ultimate load-carrying capacity Shear Near-surfacemounted reinforcement (NSMR) Infrastructure Engineering Infrastrukturteknik Puurula, Arto Enochsson, Ola Sas, Gabriel Blanksvärd, Thomas Ohlsson, Ulf Bernspång, Lars Täljsten, Björn Carolin, Anders Paulsson, Björn Elfgren, Lennart Assessment of the Strengthening of an RC Railway Bridge with CFRP utilizing a Full-Scale Failure Test and Finite-Element Analysis |
topic_facet |
Bridge Train load Failure analysis Ultimate load-carrying capacity Shear Near-surfacemounted reinforcement (NSMR) Infrastructure Engineering Infrastrukturteknik |
description |
A finite element (FE) model was calibrated using the data obtained from a full-scale test to failure of a 50 year old reinforced concrete (RC) railway bridge. The model was then used to assess the effectiveness of various strengthening schemes to increase the loadcarrying capacity of the bridge. The bridge was a two-span continuous single-track trough bridge with a total length of 30 m, situated in Örnsköldsvik in northern Sweden. It was tested in situ as the bridge had been closed following the construction of a new section of the Railway line. The test was planned to evaluate and calibrate models to predict the load-carrying capacity of the bridge and assess the strengthening schemes originally developed by the European research project called Sustainable bridges. The objective of the test was to investigate shear failure, rather than bending failure for which good calibrated models are already available. To that end, the bridge was strengthened in flexure before the test using near-surface mounted square section carbon fiber reinforced polymer (CFRP) bars. The ultimate failure mechanism turned into an interesting combination of bending, shear, torsion, and bond failures at an applied load of 11.7 MN (2,630 kips). A computer model was developed using specialized software to represent the response of the bridge during the test. It was calibrated using data from the test and was then used to calculate the actual capacity of the bridge in terms of train loading using the current Swedish load model which specifies a 330 kN (74 kips) axle weight. These calculations show that the unstrengthened bridge could sustain a load 4.7 times greater than the current load requirements (which is over six times the original design loading), whilst the strengthened bridge could sustain a load 6.5 times greater than currently required. Comparisons are also made with calculations using codes from Canada, Europe, and the United States. Validerad; 2015; Nivå 2; Bibliografisk uppgift: This work is made available under the terms of ... |
format |
Article in Journal/Newspaper |
author |
Puurula, Arto Enochsson, Ola Sas, Gabriel Blanksvärd, Thomas Ohlsson, Ulf Bernspång, Lars Täljsten, Björn Carolin, Anders Paulsson, Björn Elfgren, Lennart |
author_facet |
Puurula, Arto Enochsson, Ola Sas, Gabriel Blanksvärd, Thomas Ohlsson, Ulf Bernspång, Lars Täljsten, Björn Carolin, Anders Paulsson, Björn Elfgren, Lennart |
author_sort |
Puurula, Arto |
title |
Assessment of the Strengthening of an RC Railway Bridge with CFRP utilizing a Full-Scale Failure Test and Finite-Element Analysis |
title_short |
Assessment of the Strengthening of an RC Railway Bridge with CFRP utilizing a Full-Scale Failure Test and Finite-Element Analysis |
title_full |
Assessment of the Strengthening of an RC Railway Bridge with CFRP utilizing a Full-Scale Failure Test and Finite-Element Analysis |
title_fullStr |
Assessment of the Strengthening of an RC Railway Bridge with CFRP utilizing a Full-Scale Failure Test and Finite-Element Analysis |
title_full_unstemmed |
Assessment of the Strengthening of an RC Railway Bridge with CFRP utilizing a Full-Scale Failure Test and Finite-Element Analysis |
title_sort |
assessment of the strengthening of an rc railway bridge with cfrp utilizing a full-scale failure test and finite-element analysis |
publisher |
Luleå tekniska universitet, Byggkonstruktion och -produktion |
publishDate |
2015 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-15842 https://doi.org/10.1061/(ASCE)ST.1943-541X.0001116 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
Journal of Structural Engineering, 0733-9445, 2015, 141:1 (Special Issue), s. D4014008-1-D4014008-11 orcid:0000-0002-8682-876X orcid:0000-0002-5154-7044 orcid:0000-0001-5187-2552 orcid:0000-0001-7799-5809 orcid:0000-0002-0560-9355 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-15842 doi:10.1061/(ASCE)ST.1943-541X.0001116 ISI:000346338100011 Scopus 2-s2.0-84920771165 Local f66f5694-cfe1-40be-a43e-24618eb23eae |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1061/(ASCE)ST.1943-541X.0001116 |
container_title |
Journal of Structural Engineering |
container_volume |
141 |
container_issue |
1 |
_version_ |
1766148026544422912 |