Effect of variability of material properties on resistance of existing post-tensioned concrete bridge – case study
The study deals with the sensitivity analysis in determining the load-bearing capacity of existing bridges made of post-tensioned precast girders. Focusing on a specific road bridge, the effect of variations of important basic variables on load-bearing capacity is investigated. When assessing exist...
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| Format: | Article |
| Language: | English |
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Czech Technical University in Prague
2025-07-01
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| Series: | Acta Polytechnica CTU Proceedings |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/10745 |
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| author | Aleš Mezera Milan Holý Miroslav Sýkora |
| author_facet | Aleš Mezera Milan Holý Miroslav Sýkora |
| author_sort | Aleš Mezera |
| collection | DOAJ |
| description |
The study deals with the sensitivity analysis in determining the load-bearing capacity of existing bridges made of post-tensioned precast girders. Focusing on a specific road bridge, the effect of variations of important basic variables on load-bearing capacity is investigated. When assessing existing structures, values of some basic variables often need to be estimated due to the lack of background information (missing documentation, limited range of structural survey). The aim of this study is to identify basic variables with key influence on load-bearing capacity of the bridge. Numerical example is specifically focused on the mid-span cross-section of a simply supported KA-73 beam structure. It appears that corrosion is the key factor affecting reliability of the bridge at the Ultimate Limit State while prestressing loss is dominating the Servieability Limit State verification. Further research will be focused on reliability analysis of bridges based on the results of structural surveys.
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| format | Article |
| id | doaj-art-fea7a9c483bb47768375771920137165 |
| institution | DOAJ |
| issn | 2336-5382 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-fea7a9c483bb477683757719201371652025-08-20T03:11:49ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822025-07-015310.14311/APP.2025.53.0068Effect of variability of material properties on resistance of existing post-tensioned concrete bridge – case studyAleš Mezera0Milan Holý1Miroslav Sýkora2Czech Technical University in Prague, Klokner Institute, Šolínova 7, Prague 166 08, Czech RepublicCzech Technical University in Prague, Klokner Institute, Šolínova 7, Prague 166 08, Czech RepublicCzech Technical University in Prague, Klokner Institute, Šolínova 7, Prague 166 08, Czech Republic The study deals with the sensitivity analysis in determining the load-bearing capacity of existing bridges made of post-tensioned precast girders. Focusing on a specific road bridge, the effect of variations of important basic variables on load-bearing capacity is investigated. When assessing existing structures, values of some basic variables often need to be estimated due to the lack of background information (missing documentation, limited range of structural survey). The aim of this study is to identify basic variables with key influence on load-bearing capacity of the bridge. Numerical example is specifically focused on the mid-span cross-section of a simply supported KA-73 beam structure. It appears that corrosion is the key factor affecting reliability of the bridge at the Ultimate Limit State while prestressing loss is dominating the Servieability Limit State verification. Further research will be focused on reliability analysis of bridges based on the results of structural surveys. https://ojs.cvut.cz/ojs/index.php/APP/article/view/10745material propertiesresistanceload-bearing capacitypost-tensionconcretebridge |
| spellingShingle | Aleš Mezera Milan Holý Miroslav Sýkora Effect of variability of material properties on resistance of existing post-tensioned concrete bridge – case study Acta Polytechnica CTU Proceedings material properties resistance load-bearing capacity post-tension concrete bridge |
| title | Effect of variability of material properties on resistance of existing post-tensioned concrete bridge – case study |
| title_full | Effect of variability of material properties on resistance of existing post-tensioned concrete bridge – case study |
| title_fullStr | Effect of variability of material properties on resistance of existing post-tensioned concrete bridge – case study |
| title_full_unstemmed | Effect of variability of material properties on resistance of existing post-tensioned concrete bridge – case study |
| title_short | Effect of variability of material properties on resistance of existing post-tensioned concrete bridge – case study |
| title_sort | effect of variability of material properties on resistance of existing post tensioned concrete bridge case study |
| topic | material properties resistance load-bearing capacity post-tension concrete bridge |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/10745 |
| work_keys_str_mv | AT alesmezera effectofvariabilityofmaterialpropertiesonresistanceofexistingposttensionedconcretebridgecasestudy AT milanholy effectofvariabilityofmaterialpropertiesonresistanceofexistingposttensionedconcretebridgecasestudy AT miroslavsykora effectofvariabilityofmaterialpropertiesonresistanceofexistingposttensionedconcretebridgecasestudy |