Aerodynamic interference between two boxes in parallel arrangement and flow field characteristics around the girder
Abstract Aerodynamic characteristics of long-span bridges with box girders have been investigated widely, and this paper presents a study on a cable-stayed bridge with two box girders in parallel arrangement. Computational fluid dynamics (CFD) numerical simulations were adopted to analyze the aerody...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2022-12-01
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| Series: | Advances in Bridge Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s43251-022-00079-6 |
| _version_ | 1811177848515330048 |
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| author | Shuwen Fan Wei Chen Haojun Tang Yongle Li |
| author_facet | Shuwen Fan Wei Chen Haojun Tang Yongle Li |
| author_sort | Shuwen Fan |
| collection | DOAJ |
| description | Abstract Aerodynamic characteristics of long-span bridges with box girders have been investigated widely, and this paper presents a study on a cable-stayed bridge with two box girders in parallel arrangement. Computational fluid dynamics (CFD) numerical simulations were adopted to analyze the aerodynamic interference between the upper and the lower box girders. After checking the reliability of the numerical model, different angles of attack and different distances between the two girders were considered, and the variations of the aerodynamic characteristics were discussed, including the aerodynamic coefficients and the static pressure distributions. Then, the wind environment around the two box girders was focused, and the effect on the aerodynamic coefficients of a vehicle was also studied. The results show that the aerodynamic interference between the two box girders is strong, so the aerodynamic characteristics of the two boxes are different from those of a single box. The flow field between the boxes have higher wind velocities, which makes the aerodynamic force on the upper box and the lower box become upward and downward, respectively. Meanwhile, the aerodynamic forces on vehicles above the lower deck surface are larger due to the accelerated flow between the two boxes. |
| first_indexed | 2024-04-11T06:09:17Z |
| format | Article |
| id | doaj.art-06cd14599a4549fba5ad61029eb92bf8 |
| institution | Directory Open Access Journal |
| issn | 2662-5407 |
| language | English |
| last_indexed | 2024-04-11T06:09:17Z |
| publishDate | 2022-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Advances in Bridge Engineering |
| spelling | doaj.art-06cd14599a4549fba5ad61029eb92bf82022-12-22T04:41:22ZengSpringerOpenAdvances in Bridge Engineering2662-54072022-12-013111510.1186/s43251-022-00079-6Aerodynamic interference between two boxes in parallel arrangement and flow field characteristics around the girderShuwen Fan0Wei Chen1Haojun Tang2Yongle Li3Department of Bridge Engineering, Southwest Jiaotong UniversityDepartment of Bridge Engineering, Southwest Jiaotong UniversityDepartment of Bridge Engineering, Southwest Jiaotong UniversityDepartment of Bridge Engineering, Southwest Jiaotong UniversityAbstract Aerodynamic characteristics of long-span bridges with box girders have been investigated widely, and this paper presents a study on a cable-stayed bridge with two box girders in parallel arrangement. Computational fluid dynamics (CFD) numerical simulations were adopted to analyze the aerodynamic interference between the upper and the lower box girders. After checking the reliability of the numerical model, different angles of attack and different distances between the two girders were considered, and the variations of the aerodynamic characteristics were discussed, including the aerodynamic coefficients and the static pressure distributions. Then, the wind environment around the two box girders was focused, and the effect on the aerodynamic coefficients of a vehicle was also studied. The results show that the aerodynamic interference between the two box girders is strong, so the aerodynamic characteristics of the two boxes are different from those of a single box. The flow field between the boxes have higher wind velocities, which makes the aerodynamic force on the upper box and the lower box become upward and downward, respectively. Meanwhile, the aerodynamic forces on vehicles above the lower deck surface are larger due to the accelerated flow between the two boxes.https://doi.org/10.1186/s43251-022-00079-6Double-deck box girderAerodynamic interferenceAerodynamic coefficientsWind environmentNumerical simulations |
| spellingShingle | Shuwen Fan Wei Chen Haojun Tang Yongle Li Aerodynamic interference between two boxes in parallel arrangement and flow field characteristics around the girder Advances in Bridge Engineering Double-deck box girder Aerodynamic interference Aerodynamic coefficients Wind environment Numerical simulations |
| title | Aerodynamic interference between two boxes in parallel arrangement and flow field characteristics around the girder |
| title_full | Aerodynamic interference between two boxes in parallel arrangement and flow field characteristics around the girder |
| title_fullStr | Aerodynamic interference between two boxes in parallel arrangement and flow field characteristics around the girder |
| title_full_unstemmed | Aerodynamic interference between two boxes in parallel arrangement and flow field characteristics around the girder |
| title_short | Aerodynamic interference between two boxes in parallel arrangement and flow field characteristics around the girder |
| title_sort | aerodynamic interference between two boxes in parallel arrangement and flow field characteristics around the girder |
| topic | Double-deck box girder Aerodynamic interference Aerodynamic coefficients Wind environment Numerical simulations |
| url | https://doi.org/10.1186/s43251-022-00079-6 |
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