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根据柔性路面面层弯拉应力的计算规则,分析了上中滑动、中下连续三层路面结构面层弯拉应力的解析解和常见的高等级柔性路面结构层厚度及模量的范围。首次成功地建立了三层体系路面结构面层弯拉应力回归逼近的教学模型,合理地选用了分段回归技术,求得了常见路面结构面层弯拉应力的回归逼近公式。精度分析表明,回归公式精度很好,与解析解比较误差很小,完全可以满足有关设计理论研究和工程设计的需要。
According to the calculation rules of flexural and tensile stress of flexible pavement, the analytic solution of bending stress and the range of modulus of common high-grade flexible pavement structure layer are analyzed. For the first time, a teaching model of the three-layer system for the regression analysis of bending and tension stress of pavement surface was successfully established. The regression regression method was used to obtain the approximate formula of the bending and tension stress of common pavement structure. Accuracy analysis shows that the regression formula is very accurate and has very little error compared with the analytical solution, which can completely meet the needs of the design theory research and engineering design.