Study on the mechanical behavior of corroded bridge steel based on the entire process of tensile failure
The Q345qD bridge steels exposed to severe corrosion environments undergo mechanical property degradation, posing significant safety risks for sea-crossing bridges. Assessing the health of corroded bridge steel structures under load conditions in a manner that avoids causing damage can effectively p...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/adaac2 |
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| author | Yi Li Dapeng Hu Yangming Xu Bo Wang Yongjun Zhou Zhonghong Dong |
| author_facet | Yi Li Dapeng Hu Yangming Xu Bo Wang Yongjun Zhou Zhonghong Dong |
| author_sort | Yi Li |
| collection | DOAJ |
| description | The Q345qD bridge steels exposed to severe corrosion environments undergo mechanical property degradation, posing significant safety risks for sea-crossing bridges. Assessing the health of corroded bridge steel structures under load conditions in a manner that avoids causing damage can effectively prevent these intensifying safety hazards. To investigate the impact of corrosion on the mechanical performance of these steels, six sets of standard specimens underwent corrosion ranging from 0 to 896 h. Subsequently, during tensile testing, an image acquisition platform was established to utilize Digital Image Correlation (DIC) techniques for capturing and observing the tensile loading processes of various corroded specimens. Analysis of stress–strain curves and strain field evolution patterns provided insights into the deterioration of mechanical properties of Q345qD bridge steels after corrosion. For corroded bridge steel structures, defects caused by the corrosion pits can still result in localized strain concentration under low load levels. At higher load levels, mass loss due to corrosion or reduced cross-sectional dimensions of load-bearing elements are the primary causes of mechanical performance decline, precipitating overall structural failure. These findings provide some references for routine maintenance of steel structures of cross-sea bridges. |
| format | Article |
| id | doaj-art-78f0e2f2d6d34a85a03b357a2d917d12 |
| institution | Kabale University |
| issn | 2053-1591 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj-art-78f0e2f2d6d34a85a03b357a2d917d122025-01-24T15:49:25ZengIOP PublishingMaterials Research Express2053-15912025-01-0112101651410.1088/2053-1591/adaac2Study on the mechanical behavior of corroded bridge steel based on the entire process of tensile failureYi Li0Dapeng Hu1Yangming Xu2Bo Wang3Yongjun Zhou4Zhonghong Dong5https://orcid.org/0000-0001-5567-457XSchool of Highway, Chang’an University , Xi’an, Shaanxi, 710064, People’s Republic of China; Bay Area Super Major Bridge Maintenance Technology Center of Guangdong Highway Construction Co. Ltd, Guangzhou, 510635, Guangdong, People’s Republic of ChinaSchool of Construction Machinery, Chang’an University , Xi’an, Shaanxi, 710064, People’s Republic of ChinaBay Area Super Major Bridge Maintenance Technology Center of Guangdong Highway Construction Co. Ltd, Guangzhou, 510635, Guangdong, People’s Republic of ChinaSchool of Construction Machinery, Chang’an University , Xi’an, Shaanxi, 710064, People’s Republic of ChinaSchool of Highway, Chang’an University , Xi’an, Shaanxi, 710064, People’s Republic of China; Xi’an Chang Da Highway Engineering Testing Center Co. Ltd., Xi’an, Shaanxi, 710064, People’s Republic of ChinaSchool of Construction Machinery, Chang’an University , Xi’an, Shaanxi, 710064, People’s Republic of ChinaThe Q345qD bridge steels exposed to severe corrosion environments undergo mechanical property degradation, posing significant safety risks for sea-crossing bridges. Assessing the health of corroded bridge steel structures under load conditions in a manner that avoids causing damage can effectively prevent these intensifying safety hazards. To investigate the impact of corrosion on the mechanical performance of these steels, six sets of standard specimens underwent corrosion ranging from 0 to 896 h. Subsequently, during tensile testing, an image acquisition platform was established to utilize Digital Image Correlation (DIC) techniques for capturing and observing the tensile loading processes of various corroded specimens. Analysis of stress–strain curves and strain field evolution patterns provided insights into the deterioration of mechanical properties of Q345qD bridge steels after corrosion. For corroded bridge steel structures, defects caused by the corrosion pits can still result in localized strain concentration under low load levels. At higher load levels, mass loss due to corrosion or reduced cross-sectional dimensions of load-bearing elements are the primary causes of mechanical performance decline, precipitating overall structural failure. These findings provide some references for routine maintenance of steel structures of cross-sea bridges.https://doi.org/10.1088/2053-1591/adaac2digital image correlationQ345qD steelcorrosion behaviortensile testmechanical properties decay |
| spellingShingle | Yi Li Dapeng Hu Yangming Xu Bo Wang Yongjun Zhou Zhonghong Dong Study on the mechanical behavior of corroded bridge steel based on the entire process of tensile failure Materials Research Express digital image correlation Q345qD steel corrosion behavior tensile test mechanical properties decay |
| title | Study on the mechanical behavior of corroded bridge steel based on the entire process of tensile failure |
| title_full | Study on the mechanical behavior of corroded bridge steel based on the entire process of tensile failure |
| title_fullStr | Study on the mechanical behavior of corroded bridge steel based on the entire process of tensile failure |
| title_full_unstemmed | Study on the mechanical behavior of corroded bridge steel based on the entire process of tensile failure |
| title_short | Study on the mechanical behavior of corroded bridge steel based on the entire process of tensile failure |
| title_sort | study on the mechanical behavior of corroded bridge steel based on the entire process of tensile failure |
| topic | digital image correlation Q345qD steel corrosion behavior tensile test mechanical properties decay |
| url | https://doi.org/10.1088/2053-1591/adaac2 |
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