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RISS 인기검색어
- 검색키워드
- 저자 : Jiexuan Hu (검색결과 4 건)
- 무료
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- 유료
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Experimental and numerical studies of aerodynamic forces on vehicles and bridges
Han, Yan,Hu, Jiexuan,Cai, C.S.,Chen, Zhengqing,Li, Chunguang Techno-Press 2013 Wind and Structures, An International Journal (WAS Vol.17 No.2
An accurate identification of the aerodynamic characteristics of vehicles and the bridge is the premise for the coupled vibration analysis of a wind-vehicle-bridge system. At present, the interaction of aerodynamic forces between the road vehicles and bridge is ignored in most previous studies. In the present study, an experimental setup was developed to measure the aerodynamic characteristics of vehicles and the bridge for different cases in a wind tunnel considering the aerodynamic interference. The influence of the wind turbulence, the wind speed, the vehicle interference, and the vehicle position on the aerodynamic coefficients of vehicles, and the influence of vehicles on the static coefficients of the bridge were investigated, based on the experimental results. The variations in the aerodynamic characteristics of vehicles and the bridge were studied and the measured results were validated according to the results of surface pressure measurements on the vehicle and the bridge. The measured results were further validated by comparing the measured results with values derived numerically. The measured results showed that the wind turbulence, the vehicle interference, and the vehicle position significantly affected the aerodynamic coefficients of vehicles. However, the influence of the wind speed on the aerodynamic coefficients of the studied vehicle is small. The static coefficients of the bridge were also significantly influenced by the presence of vehicles.
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A coupled wind-vehicle-bridge system and its applications: a review
C.S. Cai,Jiexuan Hu,Suren Chen,Yan Han,Wei Zhang,Xuan Kong 한국풍공학회 2015 Wind and Structures, An International Journal (WAS Vol.20 No.2
The performance of bridges under strong wind and traffic is of great importance to set thetraveling speed limit or to make operational decisions for severe weather, such as controlling traffic or evenclosing the bridge. Meanwhile, the vehicle‟s safety is highly concerned when it is running on bridges orhighways under strong wind. During the past two decades, researchers have made significant contributionsto the simulation of the wind-vehicle-bridge system and their interactive effects. This paper aims to providea comprehensive review of the overall performance of the bridge and traffic system under strong wind,including bridge structures and vehicles, and the associated mitigation efforts.
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A coupled wind-vehicle-bridge system and its applications: a review
Cai, C.S.,Hu, Jiexuan,Chen, Suren,Han, Yan,Zhang, Wei,Kong, Xuan Techno-Press 2015 Wind and Structures, An International Journal (WAS Vol.20 No.2
The performance of bridges under strong wind and traffic is of great importance to set the traveling speed limit or to make operational decisions for severe weather, such as controlling traffic or even closing the bridge. Meanwhile, the vehicle's safety is highly concerned when it is running on bridges or highways under strong wind. During the past two decades, researchers have made significant contributions to the simulation of the wind-vehicle-bridge system and their interactive effects. This paper aims to provide a comprehensive review of the overall performance of the bridge and traffic system under strong wind, including bridge structures and vehicles, and the associated mitigation efforts.
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Experimental and numerical studies of aerodynamic forces on vehicles and bridges
Yan Han,C.S. Cai,Jiexuan Hu,Zhengqing Chen,Chunguang Li 한국풍공학회 2013 한국풍공학회지 Vol.17 No.2
An accurate identification of the aerodynamic characteristics of vehicles and the bridge is the premise for the coupled vibration analysis of a wind-vehicle-bridge system. At present, the interaction of aerodynamic forces between the road vehicles and bridge is ignored in most previous studies. In the present study, an experimental setup was developed to measure the aerodynamic characteristics of vehicles and the bridge for different cases in a wind tunnel considering the aerodynamic interference. The influence of the wind turbulence, the wind speed, the vehicle interference, and the vehicle position on the aerodynamic coefficients of vehicles, and the influence of vehicles on the static coefficients of the bridge were investigated, based on the experimental results. The variations in the aerodynamic characteristics of vehicles and the bridge were studied and the measured results were validated according to the results of surface pressure measurements on the vehicle and the bridge. The measured results were further validated by comparing the measured results with values derived numerically. The measured results showed that the wind turbulence, the vehicle interference, and the vehicle position significantly affected the aerodynamic coefficients of vehicles. However, the influence of the wind speed on the aerodynamic coefficients of the studied vehicle is small. The static coefficients of the bridge were also significantly influenced by the presence of vehicles.
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