河南省高速公路路基合理设计参数研究

路基设计参数对沥青路面的结构设计十分重要。通过合理考虑不同季节路基回弹模量对路表弯沉值的影响，提出考虑季节变化的路基有效回弹模量计算方法。在此基础上，结合河南省高速公路路基强度状况调查，根据不同交通等级下，不同路基回弹模量对沥青路面设计厚度的影响，提出路基强度等级分类标准。研究结果能够在保证路基承载力的情况下，提高设计参数取值的合理性和针对性。

Study on Rational Design Parameters for Subgrade of Highways in Henan Province

Subgrade design parameters are important to structural design of asphalt pavement. By taking the resilient modulus of subgrade in different seasons into consideration reasonably, a method calculating the effective resilient modulus of subgrade with season change concerned was proposed, based on which, with the surveys on highway subgrade strength in Henan Province, the classification standard for subgrade strength grade was put forward according to the effect of the different resilient modulus on the designed thickness of asphalt pavement under different traffic levels. The study result may, on condition of ensuring the subgrade＇s bearing capacity, increase the reasonability and pertinence of the design parameters valuing.