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利用T10型测试车测试了某机场水泥混凝土跑道不同区段摩擦因数,利用照相法和特征描述法对道面不同尺度的构造进行了特征分析,基于测试结果,探讨了道面构造对其摩擦因数的影响规律,提出了基于构造特征参数的道面抗滑能力表达模型。根据对道面宏观、粗观和细观构造特征参数的相关分析,构建了基于构造特征的道面抗滑摩擦因数模型。研究结果表明:构造特征相近的道面,其构造深度为0.6～0.7cm时,摩擦因数为0.40～0.42;构造特征差异较大时,构造深度分别为0.70、0.78cm的区域,摩擦因数分别为0.43、0.75,构造特征对摩擦因数的影响不可忽视;基于道面构造特征的参数化分析,采用道面抗滑摩擦因数模型可定量分析旧道面抗滑性能。
The T10 test car was used to test the friction coefficient of different sections of a cement concrete runway in a certain airport. The characteristics of pavement structure at different scales were analyzed by the method of photography and characterization. Based on the test results, the influence of pavement structure on the friction coefficient The paper presents an expression model of pavement skid resistance based on structural characteristic parameters. Based on the correlation analysis of pavement macroscopic, macroscopic and meso-tectonic parameters, the model of frictional friction coefficient of pavement based on structural features was constructed. The results show that the friction coefficient is 0.40-0.42 when the tectonic depth is 0.6-0.7cm and the depth is 0.70-0.78cm when the tectonic characteristics are different. The friction coefficient is 0.43 and 0.75. The influence of structural features on the friction coefficient can not be neglected. Based on parametric analysis of pavement structure characteristics, the anti-skid friction coefficient model of pavement can be used to quantitatively analyze the anti-sliding performance of the old pavement.