高速公路路面水膜厚度预测模型构建与安全阈值研究OA

Aiming at the hydroplaning during driving on expressways in rainy weather,this paper established a prediction mod-el for water film thickness on expressways and analyzed the safety threshold of water film thickness.Firstly,based on classical water film thickness prediction models in China and abroad,the basic model for water film thickness prediction was deter-mined;then,through the mutual calibration of indoor simulated rainfall tests and outdoor field tests,the key parameters of the basic water film thickness prediction model were comprehensively determined to ensure the prediction accuracy and applicabili-ty of the model;finally,combined with the expressway hydroplaning accident data,the water film thickness safety thresh-old suitable for expressway was proposed,providing theoretical support for the calculation of water film thickness and the eval-uation of drainage capacity in the drainage design of expressway pavement.