基于地下水变位的路基顶面当量回弹模量预估

Prediction Method of Equivalent Resilient Modulus on Top of Pavement Subgrade with Underground Water Table

在分析总结国内外关于非饱和土土壤水分特征曲线相关研究资料的基础上,结合所提出的3种土的回弹模 量预估方程,探讨建立基于地下水位变化的路基顶面当量回弹模量预估模型,并根据上海市罗山路实测数据对其 进行验证分析.分析表明,该模型可以较为准确地预估路基顶面当量回弹模量.

Based on a series of laboratory tests and experiment results of some researchers,the estimation equations of resilient modulus are established for silt gravel,clay and sand.Furthermore,a method to predict the equivalent resilient modulus on the top of pavement subgrade with underground water table is proposed on the basis of the study of matric suction and soil-water charcteristics curve in this paper.The prediction method has successfully been applied to predict the equivalent resilient modulus on the top of clay subgrade at Shanghai's Luoshan Road.