Safety assessment of brazilian concrete bridges through reliability analysis
Autor(a) principal: | |
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Data de Publicação: | 2024 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/89209 |
Resumo: | This paper addresses the need for accurate and objective safety assessments of bridges in Brazil taking into account the increase in traffic load and limited funding for infrastructure. In Brazil, the usual method of ensuring bridge safety involves strengthening based on design codes using deterministic analysis and partial safety factors. This method leads to an increase in the maintenance cost of the bridges. Structural reliability assessment, a higher-tier assessment method, is recommended globally for assessing the safety of existing bridges beyond current deterministic methods. This paper presents a study that evaluates the structural safety of existing road bridges in Brazil using the semi-probabilistic method defined in Brazilian standards and the full probabilistic method. The study selected six case studies of existing reinforced and prestressed concrete bridges to evaluate their structural safety concerning current normative loads. The results suggest that the partial safety factors defined in the Brazilian standards are consistent with international standards. The reliability analysis can guarantee the bridges’ safety, even with increased traffic loads, without additional costs for structural strengthening. Therefore, the paper highlights the importance of promoting reliability analysis in Brazil to ensure the safety of existing bridges and promote cost-effective and objective safety assessments. |
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Safety assessment of brazilian concrete bridges through reliability analysisBrazilian standardsBridge infrastructureBridge managementExisting bridgesPartial safety factorsReliability assessmentStructural safetyThis paper addresses the need for accurate and objective safety assessments of bridges in Brazil taking into account the increase in traffic load and limited funding for infrastructure. In Brazil, the usual method of ensuring bridge safety involves strengthening based on design codes using deterministic analysis and partial safety factors. This method leads to an increase in the maintenance cost of the bridges. Structural reliability assessment, a higher-tier assessment method, is recommended globally for assessing the safety of existing bridges beyond current deterministic methods. This paper presents a study that evaluates the structural safety of existing road bridges in Brazil using the semi-probabilistic method defined in Brazilian standards and the full probabilistic method. The study selected six case studies of existing reinforced and prestressed concrete bridges to evaluate their structural safety concerning current normative loads. The results suggest that the partial safety factors defined in the Brazilian standards are consistent with international standards. The reliability analysis can guarantee the bridges’ safety, even with increased traffic loads, without additional costs for structural strengthening. Therefore, the paper highlights the importance of promoting reliability analysis in Brazil to ensure the safety of existing bridges and promote cost-effective and objective safety assessments.This work was partly financed by FCT / MCTES through national funds (PIDDAC) under the R&D Unit Insti tute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020, and under the Associate Laboratory Advanced Production and Intelligent Systems ARISE under reference LA/ P/0112/2020.The second author was supported by the doctoral Grant PRT/BD/154332/2023 financed by the Portuguese Foundation for Science and Technology (FCT), and with funds from the European Social Fund (ESF), under MIT Portugal Programme.International Association for Bridge and Structural Engineering (IABSE)Universidade do MinhoSantos, Ademir F.Bonatte, Maurício S.Sousa, Hélder S.Bittencourt, Túlio N.Matos, José C.2024-012024-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/89209eng1016-866410.1080/10168664.2023.2288386https://www.tandfonline.com/doi/full/10.1080/10168664.2023.2288386info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-02T01:19:59Zoai:repositorium.sdum.uminho.pt:1822/89209Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:11:52.273212Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Safety assessment of brazilian concrete bridges through reliability analysis |
title |
Safety assessment of brazilian concrete bridges through reliability analysis |
spellingShingle |
Safety assessment of brazilian concrete bridges through reliability analysis Santos, Ademir F. Brazilian standards Bridge infrastructure Bridge management Existing bridges Partial safety factors Reliability assessment Structural safety |
title_short |
Safety assessment of brazilian concrete bridges through reliability analysis |
title_full |
Safety assessment of brazilian concrete bridges through reliability analysis |
title_fullStr |
Safety assessment of brazilian concrete bridges through reliability analysis |
title_full_unstemmed |
Safety assessment of brazilian concrete bridges through reliability analysis |
title_sort |
Safety assessment of brazilian concrete bridges through reliability analysis |
author |
Santos, Ademir F. |
author_facet |
Santos, Ademir F. Bonatte, Maurício S. Sousa, Hélder S. Bittencourt, Túlio N. Matos, José C. |
author_role |
author |
author2 |
Bonatte, Maurício S. Sousa, Hélder S. Bittencourt, Túlio N. Matos, José C. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Santos, Ademir F. Bonatte, Maurício S. Sousa, Hélder S. Bittencourt, Túlio N. Matos, José C. |
dc.subject.por.fl_str_mv |
Brazilian standards Bridge infrastructure Bridge management Existing bridges Partial safety factors Reliability assessment Structural safety |
topic |
Brazilian standards Bridge infrastructure Bridge management Existing bridges Partial safety factors Reliability assessment Structural safety |
description |
This paper addresses the need for accurate and objective safety assessments of bridges in Brazil taking into account the increase in traffic load and limited funding for infrastructure. In Brazil, the usual method of ensuring bridge safety involves strengthening based on design codes using deterministic analysis and partial safety factors. This method leads to an increase in the maintenance cost of the bridges. Structural reliability assessment, a higher-tier assessment method, is recommended globally for assessing the safety of existing bridges beyond current deterministic methods. This paper presents a study that evaluates the structural safety of existing road bridges in Brazil using the semi-probabilistic method defined in Brazilian standards and the full probabilistic method. The study selected six case studies of existing reinforced and prestressed concrete bridges to evaluate their structural safety concerning current normative loads. The results suggest that the partial safety factors defined in the Brazilian standards are consistent with international standards. The reliability analysis can guarantee the bridges’ safety, even with increased traffic loads, without additional costs for structural strengthening. Therefore, the paper highlights the importance of promoting reliability analysis in Brazil to ensure the safety of existing bridges and promote cost-effective and objective safety assessments. |
publishDate |
2024 |
dc.date.none.fl_str_mv |
2024-01 2024-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/1822/89209 |
url |
https://hdl.handle.net/1822/89209 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1016-8664 10.1080/10168664.2023.2288386 https://www.tandfonline.com/doi/full/10.1080/10168664.2023.2288386 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
International Association for Bridge and Structural Engineering (IABSE) |
publisher.none.fl_str_mv |
International Association for Bridge and Structural Engineering (IABSE) |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799137768531558400 |