The Water Sections Diagnosis And Control Techniques

Surface water due to rainfall caused a serious impact on the normal operation of road traffic safety and road traffic. The road surface due to rainfall, the movement under the action of gravity along the synthetic direction of the gradient film formed on the surface of the road. The road surface film of waterseriously affect traffic safety, significantly reduce the coefficient of friction between the water film lubrication, tire and road, the car in motion the processmore prone to sliding, resulting in driving dangerous. The road surface water is thicker, the mist generated by the vehicle with the higher speed because of the hydrodynamic effect, tire and road surface friction coefficient is reduced along the faster the vehicle is more prone to sliding. Road rainwater gathered easily lead to water damage, increased road maintenance workload.In this paper, statistics, fluid mechanics, theory of road drainage, vehiclestheory, relying Chongqing Expressway, identification technology for easy sections of water, easy to water section of the linear features, as well as easy to water sections of the linear impact factors research.First of all, the use of statistical theory, easy to water section of the identification method. Identification method based on the easy sections of water, water sections on-site research, easy to identify sections of water. Easy to water sections are classified and analyzed, to identify sections of water linear features,such as the transition curve and a concave vertical curve segment, summed up the factors that affect the thickness of the stagnant water.Secondly, establish the thickness of the surface water by Manning’s equation and Chezy formula calculation model of cross slope length, cross slope gradient and gradient change of the thickness of the stagnant water. Use FLUENTsoftware to simulate the rainy pavement run off process, and in order to verifythat the road water film thickness calculation model.Finally, for the road surface water impact factors, including the length of the cross slope, cross slope gradient and Gradient based on road traffic safety consi derations, the control reference value.