The Role Of Coastal Railway Bridge Wind Wall Wind

It is necessary to study the wind resistance performance during the construction of the long-span prestressed concrete rigid frame-continuous bridge in the coastal areas. This paper, Baima river Bridge with the main span of 145 meters for example, studied the wind response of the bridge and bridge-train system with different wind-shield walls in height detailedly. The following achievements are obtained:1. The condition is introduced in detail on the construction of bridges with wind-shield walls around windy areas at home and abroad. In addition, the fundamental theory and method are illustrated on aerostatic coefficients'calculation.2. Aerostatic coefficients of several girder sections are calculated in detail on baima river bridge with different heights based on Fluent, which is a programme about studying flow field. Then, the aeroperformance of girder is analyzed when wind-shield walls are fixed.3. Considering the influence of trains on bridge aeroperformance, bridge-train system is created and aeroperformance on different levels of system is studied in depth when wind-shield walls are at different height.4. Based on the calculation of overturning moment on gondola car double-deck passenger bus and High-speed passenger car, researches overturning stability of the trains under strong wind. Therefore, reasonable height of wind-shield wall is proposed.