双圆荷载下路面弯沉的近似计算

Regression Formulas of Surface Deflection on Flexible Pavement

在分析了典型的柔性路面三层体系路面弯沉解析解和常见高等级柔性路面结构层厚度及模量范围的基础上，对常见路面结构进行了计算分析，提出了双圆荷载下最大路面弯沉的近似计算公式。该式精度良好，与层状体系理论解比较，绝大多数的误差能控制在２％以内，在许多场合下，该公式可以代替目前规范中所采用的查图法，并可在路面结构可靠度设计方法和优化设计中应用。

he regression formulas of surface deflection on the flexible pavement is presented,basdon the analysis of elastic multilayer theory and general pavement structures.The accuracy of regressionformulas is very high in comparison with solutions of elastic multilayer theory. A number of results ofregression furmulas shows to be available for uptimum design and reliable design of flexible pavement.