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采用强夯法处理高速公路改建中旧路堤压实度偏低的问题,满足压实度规范要求的夯击能的确定是路堤强夯的关键问题。以威乳高速公路改建工程为依托,用动态有限差分法对夯锤与路堤的相互作用过程进行了动态模拟,基于压实度控制标准,确定强夯影响深度与平均竖向残余应变的关系。采用量纲分析法和数值分析法确定夯击能与各土力学参数的关系,从而对威乳路试夯结果进行一般性推广,得到了不同高度路堤夯击能确定方法。
The use of dynamic compaction method to deal with the old embankment in the reconstruction of the highway compaction problem is low, compaction requirements to meet the requirements of compaction energy is the key issue of dynamic compaction embankment. The dynamic finite difference method was used to simulate the interaction between the rammer and the embankment based on the reconstruction of the Wei-Rou Freeway. Based on the compaction control standard, the relationship between the dynamic compaction depth and the average vertical residual strain was determined. The relationship between the impact energy and various soil mechanics parameters was determined by the method of dimension analysis and numerical analysis, and the results of the test on the Weilan Road were generalized. The methods for determining the impact energy of the embankments at different heights were obtained.