COMPUTATIONAL FLUID DYNAMICS SIMULATION AND STABILITY ANALYSIS OF VEHICLE ON BRIDGE UNDER STRONG WINDS
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- KIM Haeyoung
- 東京理科大学 理工学部 土木工学科 (研究当時 横浜国立大学 先端科学高等研究院)
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- FUJINO Yozo
- 横浜国立大学 先端科学高等研究院
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- KATSUCHI Hiroshi
- 横浜国立大学 都市イノベーション研究院
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- SIRINGORINGO Dionysius Manly
- 横浜国立大学 先端科学高等研究院
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- YAMADA Hitoshi
- 横浜国立大学 都市イノベーション研究院
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- OHKOSHI Shuji
- 東日本高速道路株式会社 関東支社 東京湾アクアライン管理事務所
Bibliographic Information
- Other Title
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- 橋梁上の車両に関する強風時の数値流体シミュレーションと安定解析
Description
<p> This paper describes an investigation on vehicle stability when crossing a bridge under strong wind by Computational Fluid Dynamics (CFD) and vehicle dynamics stability model. Large Eddy Simulation (LES) was implemented in the CFD to compute time-histories of vehicle’s aerodynamic force coefficients when moving on the bridge at different traffic lanes. The aerodynamic force coefficients were later utilized to compute wind loads on the vehicle, based on which vibration and stability of vehicle were evaluated using vehicle dynamics model. Simulation results show that the flow fields around vehicle vary for each traffic lane and they were strongly influenced by the shear layer separated from leading edge of the bridge girder. As a result, the aerodynamic characteristics acting on the vehicle and the normal force on each wheel vary according to the traffic lane. Critical conditions of vehicle instability are defined as overturning and sideslip or yawing. The critical wind speed associated with each condition is defined as the wind speed that causes the normal force on one of the wheels becomes zero. Analyses demonstrate that the lowest critical wind speed occurs when the vehicle moves on the windward lane and it increases toward the leeward lanes. It is also observed that at any lanes, the critical condition for yawing instability occurs at a lower wind speed than the critical condition for overturning instability.</p>
Journal
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- Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE))
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Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 77 (1), 107-120, 2021
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390287142239091328
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- NII Article ID
- 130007988655
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- ISSN
- 21854653
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed