Analysis of Wind Pressure on the Surface of the Elevated Station Building when the High-speed Train Passes through the Station
Research purposes:Due to the lighter and more flexible development in the long-span elevated high-speed railway station,it shows more sensitive to the wind pressure changes of the station structure surface generated by aerodynamic force of high-speed trains.In order to explore the wind pressure characteristics of the floor surface when the high-speed trains pass through the long-span elevated station structure,the Fluent dynamic grid and CFD numerical simulation technology was used to analyze the wind pressure characteristics of long-span elevated station's floor surface with the high-speed train running at 350 km per hour in the form of single and double tracks.Both the time-history characteristics and spatial distribution characteristics of the wind pressure on the floor surface were studied.Research conclusions:(1)The superimposed effect of the train wind on the floor surface has a significant effect on the wind pressure amplitude of the floor surface when the double-track train runs in mid-span intersection compared with the single-track high-speed train.(2)Compared with the single-track running condition,the positive and negative wind pressure extreme values of the head wave at each measuring point in the mid-span area increased to a greater extent,and the minimum increases of the positive and negative wind pressure extreme values of the measuring point were 62.30％and 64.36％.(3)The research results can provide a reference for further optimization of wind resistance design of long-span station structures.
万方数据
维普
