Effect of Crack Orientation on Fatigue Life of Reinforced Concrete Bridge Decks
In visual inspection of bridges at sites, much attention is given to the density and width of cracks of concrete, but little attention is paid to crack orientation for the diagnosis of bridge performance. In this research, the effect of crack orientation on the remaining fatigue life of reinforced c...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/8/1644 |
| _version_ | 1818027125427404800 |
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| author | Eissa Fathalla Yasushi Tanaka Koichi Maekawa |
| author_facet | Eissa Fathalla Yasushi Tanaka Koichi Maekawa |
| author_sort | Eissa Fathalla |
| collection | DOAJ |
| description | In visual inspection of bridges at sites, much attention is given to the density and width of cracks of concrete, but little attention is paid to crack orientation for the diagnosis of bridge performance. In this research, the effect of crack orientation on the remaining fatigue life of reinforced concrete (RC) bridge decks is investigated for crack patterns with a wide range of possible crack orientations. The data assimilation technology of multi-scale simulation and the pseudo-cracking method, which are widely validated for fatigue-lifetime simulation, are utilized in this study. The impact of the crack direction on fatigue life is found to be associated with the coupled flexure-shear mode of failure, and the mechanism to arrest shear cracking by preceding cracks is quantitatively estimated. This mechanism is similar to the stop-hole to prevent fatigue cracks in steel structures, and it enables us to enhance the fatigue life of RC decks. It is demonstrated that the crack orientations that approximate the longitudinal and transverse directions of RC decks are the ones that most extend remaining fatigue life. Finally, the higher risk cracking locations on the bottom surface of RC decks are discussed, presenting information of use to site inspectors. |
| first_indexed | 2024-12-10T04:42:56Z |
| format | Article |
| id | doaj.art-3e0afdf1c3fe415eb11ad16f2a474a45 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-10T04:42:56Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-3e0afdf1c3fe415eb11ad16f2a474a452022-12-22T02:01:51ZengMDPI AGApplied Sciences2076-34172019-04-0198164410.3390/app9081644app9081644Effect of Crack Orientation on Fatigue Life of Reinforced Concrete Bridge DecksEissa Fathalla0Yasushi Tanaka1Koichi Maekawa2Department of Civil Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, JapanDepartment of Civil and Environmental Engineering, Kanazawa Institute of Technology, 7-1 Ohgigaoka, Nonoichi, Ishikawa 921-8501, JapanDepartment of Civil Engineering, Graduate School of Urban Innovation, Yokohama National University, 79-1 Tokiwadai, Hodogaya, Yokohama 240-8501, JapanIn visual inspection of bridges at sites, much attention is given to the density and width of cracks of concrete, but little attention is paid to crack orientation for the diagnosis of bridge performance. In this research, the effect of crack orientation on the remaining fatigue life of reinforced concrete (RC) bridge decks is investigated for crack patterns with a wide range of possible crack orientations. The data assimilation technology of multi-scale simulation and the pseudo-cracking method, which are widely validated for fatigue-lifetime simulation, are utilized in this study. The impact of the crack direction on fatigue life is found to be associated with the coupled flexure-shear mode of failure, and the mechanism to arrest shear cracking by preceding cracks is quantitatively estimated. This mechanism is similar to the stop-hole to prevent fatigue cracks in steel structures, and it enables us to enhance the fatigue life of RC decks. It is demonstrated that the crack orientations that approximate the longitudinal and transverse directions of RC decks are the ones that most extend remaining fatigue life. Finally, the higher risk cracking locations on the bottom surface of RC decks are discussed, presenting information of use to site inspectors.https://www.mdpi.com/2076-3417/9/8/1644fatigue loadingbridge deckspseudo-cracking methoddata assimilation |
| spellingShingle | Eissa Fathalla Yasushi Tanaka Koichi Maekawa Effect of Crack Orientation on Fatigue Life of Reinforced Concrete Bridge Decks Applied Sciences fatigue loading bridge decks pseudo-cracking method data assimilation |
| title | Effect of Crack Orientation on Fatigue Life of Reinforced Concrete Bridge Decks |
| title_full | Effect of Crack Orientation on Fatigue Life of Reinforced Concrete Bridge Decks |
| title_fullStr | Effect of Crack Orientation on Fatigue Life of Reinforced Concrete Bridge Decks |
| title_full_unstemmed | Effect of Crack Orientation on Fatigue Life of Reinforced Concrete Bridge Decks |
| title_short | Effect of Crack Orientation on Fatigue Life of Reinforced Concrete Bridge Decks |
| title_sort | effect of crack orientation on fatigue life of reinforced concrete bridge decks |
| topic | fatigue loading bridge decks pseudo-cracking method data assimilation |
| url | https://www.mdpi.com/2076-3417/9/8/1644 |
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