Abstract
Nowadays, construction of railway network proceeds with high intensity in China, and a large portion of the network construction are bridges. When a train runs on a bridge, the vehicle-bridge system has to be subjected to cross wind together, and there is an intensive interaction between the aerodynamic forces of vehicle and bridge. Using the numerical simulation method, the air flow fields of static and dynamic vehicle-bridge system under cross wind are analyzed in this study. The aerodynamic coefficients of the static system obtained by numerical simulation are compared with the wind tunnel test results. Based on the aerodynamic characteristics of dynamic ambient flow, the flow field above bridge deck can be divided into six significant regions. The effects of wind speed and vehicle speed on the aerodynamic characteristics of vehicle-bridge systems are further investigated, and it shows that the flow field features three-dimensional temporal and spatial characteristics and the aerodynamic forces changes with the wind velocity and vehicle speed. The conclusions from this research can be used as reference to determine the static and dynamic aerodynamic loads on vehicle-bridge systems.
| Original language | Chinese (Simplified) |
|---|---|
| Pages (from-to) | 87-94 |
| Number of pages | 8 |
| Journal | Tumu Gongcheng Xuebao/China Civil Engineering Journal |
| Volume | 44 |
| Issue number | SUPPL. 1 |
| Publication status | Published - 1 Aug 2011 |
Keywords
- Aerodynamic characteristic
- Aerodynamic coefficient
- Cross wind
- Numerical simulation
- Vehicle-bridge system
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- Architecture
- Arts and Humanities (miscellaneous)