Prediction of aerodynamic characteristics of a box girder bridge section using the LES turbulence model

2008 ◽  
Vol 96 (10-11) ◽  
pp. 1895-1911 ◽  
Author(s):  
M.W. Sarwar ◽  
T. Ishihara ◽  
K. Shimada ◽  
Y. Yamasaki ◽  
T. Ikeda
Keyword(s):  
Turbulence Model ◽  
Aerodynamic Characteristics ◽  
Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge

The Aerodynamic Characteristics of Bus in Different Lateral Locations of Steel Box-Girder Bridge

2014 ◽  
Vol 587-589 ◽  
pp. 1693-1697
Author(s):  
Ji Guo Zhou ◽  
Zhao Tong Hu
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Wind Speed ◽  
Numerical Algorithm ◽  
Aerodynamic Characteristics ◽  
Box Girder ◽  
Steel Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
Steel Box Girder Bridge

Choosing bus as the research object, the aerodynamic characteristics of bus in the coupling of wind-vehicle-bridge system were analyzed by CFD (Computational Fluid Dynamics) numerical algorithm. The variations of state coefficients of bus along with wind yaw angles were simulated when a bus in the different lateral locations of steel box-girder bridge and the minimum critical wind speed was calculated when a bus overturning or sideslip in four different lanes on the bridge.

scholarly journals Wind tunnel measurement of aerodynamic characteristics of trains passing each other on a simply supported box girder bridge

2021 ◽  
Author(s):  
Xiaozhen Li ◽  
Yiling Tan ◽  
Xiaowei Qiu ◽  
Zhenhua Gong ◽  
Ming Wang
Keyword(s):  
Wind Tunnel ◽  
High Speed ◽  
Sudden Change ◽  
Aerodynamic Characteristics ◽  
Aerodynamic Coefficients ◽  
Box Girder ◽  
Simply Supported ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
Yaw Angle

AbstractThe aerodynamic performance of high-speed trains passing each other was investigated on a simply supported box girder bridge, with a span of 32 m, under crosswinds. The bridge and train models, modeled at a geometric scale ratio of 1:30, were used to test the aerodynamic forces of the train, with the help of a designed moving test rig in the XNJD-3 wind tunnel. The effects of wind speed, train speed, and yaw angle on the aerodynamic coefficients of the train were analyzed. The static and moving model tests were compared to demonstrate how the movement of the train influences its aerodynamic characteristics. The results show that the sheltering effect introduced by trains passing each other can cause a sudden change in force on the leeward train, which is further influenced by the wind and running speeds. Detailed analyses related to the effect of wind and train speeds on the aerodynamic coefficients were conducted. The relationship between the change in aerodynamic coefficients and yaw angle was finally described by a series of proposed fitting formulas.

Rehabilitation of the Boivre Viaduct - A Multispan Prestressed Box Girder Bridge

PCI Journal ◽  
1986 ◽  
Vol 31 (3) ◽  
pp. 22-47 ◽  
Author(s):  
Charles C. Zollman ◽  
Serge H. Barbaux
Keyword(s):  
Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge

scholarly journals The Analysis of Thermal Effect on Concrete Box Girder Bridge

2015 ◽  
Vol 111 ◽  
pp. 470-477 ◽  
Author(s):  
Lukáš Krkoška ◽  
Martin Moravčík
Keyword(s):  
Thermal Effect ◽  
Box Girder ◽  
Concrete Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge

Structural Response of Skew RC Box Girder Bridge

1982 ◽  
Vol 108 (1) ◽  
pp. 89-104
Author(s):  
Alexander C. Scordelis ◽  
S. Tanvir Wasti ◽  
Frieder Seible
Keyword(s):  
Structural Response ◽  
Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge

Vehicle Weight Estimation Using Wireless Accelerometers on a Steel-Box Girder Bridge

2019 ◽  
Author(s):  
Tomonori Nagayama ◽  
So Kato ◽  
Haoqi Wang ◽  
Di Su ◽  
Mayuko Nishio
Keyword(s):  
Weight Estimation ◽  
Box Girder ◽  
Vehicle Weight ◽  
Efficient Management ◽  
Weigh In Motion ◽  
Speed Fluctuation ◽  
Drive Speed ◽  
Box Girder Bridge ◽  
Girder Bridge ◽  
Steel Box Girder Bridge

<p>While the traffic loads need to be understood toward efficient management of bridges, the loads on each bridge are not well assessed. An easy‐to‐implement vehicle weight estimation technique toward Bridge Weigh‐In‐Motion (BWIM) is developed based on wireless accelerometers; the algorithm is studied for the application to ordinary road bridges where traffic speed is not necessarily high and drive speed fluctuation is not insignificant. The method uses only accelerometers installed on the girders, decreasing installation cost and time which typical BWIM systems based on strain measurement need. A measurement system consisting of battery operated wireless sensors is employed. The system can continue to work over weeks to assess the vehicle weigh distributions of days of a week. The system is installed on a continuous box‐girder bridge and the performance is examined. The system was shown to assess the weight of all heavy vehicles.</p>

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