填石路基沉降特性研究在压实厚度确定中的应用

填石路基压实度检测时因填料粒径过大而存在一定误差,在施工时仅依据试验路压实度与碾压遍数关系来确定压实厚度这一方法并不严谨,也不能完全体现施工方案的经济性;通过引入灰色系统理论GM（1,1）和Verhulst模型对路基沉降速率和工后总沉降的预测来辅助确定压实厚度,使逻辑更为严密.通过在某高速公路中的应用发现,该方法数据获取便捷、计算简单易行且应用效果较好,具有一定的参考价值和工程推广意义.

The Application of Research on Characteristics of Rock-filling Subgrade Settlement in Determination of Compacted Thickness

The test of rock-filling subgrade compaction degree has some errors that derived from filler particle＇s big size.Thus determining compacted thickness only by testing road compaction and grinding times is neither rigorous nor embody economy of the construction plan.This paper presents a more logic method for bringing in grey system theory GM （1,1） and Verhulst Model to predict subgrade settlement rate and general settlement as an assist of compacted thickness determination.According to its application of one highway,this method has a lot of advantages,including convenient data acquisition,simple calculation and good application effects.Therefore,it has the certain reference value and engineering advocating significance.