Research on the Residual Bearing Capacity of a Rib Beam Bridge Carriageway Slab Based on Fatigue Cumulative Damage
In order to study the residual bearing capacity of the carriageway slab of a reinforced concrete rib beam bridge after fatigue damage, a double T-beam carriageway slab model with a high degree of symmetry was designed and fatigue tests were carried out. Based on the fatigue cumulative damage theory,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Symmetry |
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| Online Access: | https://www.mdpi.com/2073-8994/14/5/894 |
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| author | Yuxuan Wu Tianlai Yu Linlin Zhang Yifan Wang Binglin Chen |
| author_facet | Yuxuan Wu Tianlai Yu Linlin Zhang Yifan Wang Binglin Chen |
| author_sort | Yuxuan Wu |
| collection | DOAJ |
| description | In order to study the residual bearing capacity of the carriageway slab of a reinforced concrete rib beam bridge after fatigue damage, a double T-beam carriageway slab model with a high degree of symmetry was designed and fatigue tests were carried out. Based on the fatigue cumulative damage theory, the fatigue residual strength equation of concrete was improved and a constitutive fatigue model of a steel bar and concrete with arbitrary loading times was established. Because the carriageway slabs are highly symmetrical, we used a ratio of length to width and a ratio of width to height to express the dimensional changes in the carriageway slabs. Abaqus general analysis program was used to create a symmetrical T-beams model and analyze the influence of the fatigue load level, the ratio of width to height of the roadway slab, and the ratio of length to width on the remaining bearing capacity of the roadway slab. Finally, the 1stOpt fitting software was employed to fit the roadway slab’s residual bearing capacity evaluation model. The fatigue test results show that the fatigue failure form of the roadway slab is punching failure, and the development law of fatigue damage can be divided into three stages, accounting for 6.25%, 56.25%, and 37.5% of the total fatigue life. The finite element analysis results showed that the length–width ratio of the roadway slab is positively correlated with its relative residual bearing capacity, and the residual bearing capacity of the two-way slab is higher than that of the one-way slab. The fatigue load level and the aspect ratio of width to height are negatively correlated with their relative residual bearing capacity. |
| first_indexed | 2024-03-10T01:44:12Z |
| format | Article |
| id | doaj.art-6552eb035d4c42509c52b59d4c1c596c |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-10T01:44:12Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-6552eb035d4c42509c52b59d4c1c596c2023-11-23T13:17:51ZengMDPI AGSymmetry2073-89942022-04-0114589410.3390/sym14050894Research on the Residual Bearing Capacity of a Rib Beam Bridge Carriageway Slab Based on Fatigue Cumulative DamageYuxuan Wu0Tianlai Yu1Linlin Zhang2Yifan Wang3Binglin Chen4School of Civil Engineering, Northeast Forestry University, Harbin 150040, ChinaSchool of Civil Engineering, Northeast Forestry University, Harbin 150040, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100000, ChinaSchool of Civil Engineering, Northeast Forestry University, Harbin 150040, ChinaSchool of Civil Engineering, Northeast Forestry University, Harbin 150040, ChinaIn order to study the residual bearing capacity of the carriageway slab of a reinforced concrete rib beam bridge after fatigue damage, a double T-beam carriageway slab model with a high degree of symmetry was designed and fatigue tests were carried out. Based on the fatigue cumulative damage theory, the fatigue residual strength equation of concrete was improved and a constitutive fatigue model of a steel bar and concrete with arbitrary loading times was established. Because the carriageway slabs are highly symmetrical, we used a ratio of length to width and a ratio of width to height to express the dimensional changes in the carriageway slabs. Abaqus general analysis program was used to create a symmetrical T-beams model and analyze the influence of the fatigue load level, the ratio of width to height of the roadway slab, and the ratio of length to width on the remaining bearing capacity of the roadway slab. Finally, the 1stOpt fitting software was employed to fit the roadway slab’s residual bearing capacity evaluation model. The fatigue test results show that the fatigue failure form of the roadway slab is punching failure, and the development law of fatigue damage can be divided into three stages, accounting for 6.25%, 56.25%, and 37.5% of the total fatigue life. The finite element analysis results showed that the length–width ratio of the roadway slab is positively correlated with its relative residual bearing capacity, and the residual bearing capacity of the two-way slab is higher than that of the one-way slab. The fatigue load level and the aspect ratio of width to height are negatively correlated with their relative residual bearing capacity.https://www.mdpi.com/2073-8994/14/5/894reinforced concrete rib beam bridgeroadway slabfatigue testcumulative damageresidual bearing capacity |
| spellingShingle | Yuxuan Wu Tianlai Yu Linlin Zhang Yifan Wang Binglin Chen Research on the Residual Bearing Capacity of a Rib Beam Bridge Carriageway Slab Based on Fatigue Cumulative Damage Symmetry reinforced concrete rib beam bridge roadway slab fatigue test cumulative damage residual bearing capacity |
| title | Research on the Residual Bearing Capacity of a Rib Beam Bridge Carriageway Slab Based on Fatigue Cumulative Damage |
| title_full | Research on the Residual Bearing Capacity of a Rib Beam Bridge Carriageway Slab Based on Fatigue Cumulative Damage |
| title_fullStr | Research on the Residual Bearing Capacity of a Rib Beam Bridge Carriageway Slab Based on Fatigue Cumulative Damage |
| title_full_unstemmed | Research on the Residual Bearing Capacity of a Rib Beam Bridge Carriageway Slab Based on Fatigue Cumulative Damage |
| title_short | Research on the Residual Bearing Capacity of a Rib Beam Bridge Carriageway Slab Based on Fatigue Cumulative Damage |
| title_sort | research on the residual bearing capacity of a rib beam bridge carriageway slab based on fatigue cumulative damage |
| topic | reinforced concrete rib beam bridge roadway slab fatigue test cumulative damage residual bearing capacity |
| url | https://www.mdpi.com/2073-8994/14/5/894 |
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