强夯砂土地基中试验指标可替代性分析

Substituability analysis of test indexes in dynamic compacted sandy soil foundation

针对部分强夯砂土地基由于静力触探试验锥尖阻力过大导致无法触探的问题,以及如何正确选择强夯砂土地基表层评价指标的问题,通过强夯砂土地基加固效果检测试验结果分析、试验结果数据回归等方法,明确了静力触探试验与标准贯入试验在强夯砂土地基加固效果评价上是一致的,但二次变形模量与地基系数的试验结果相关性较差,不可互相替代。

In order to solve the problems that the tip resistance of the cone is too large to be touched in the static sounding test of some strongly compacted sandy soil foundation,and how to choose correct dynamic compaction sand surface evaluation indexes,through the dynamic compacted sandy soil foundation reinforcement effect test results analysis and test results data regression methods,it is clear that the static penetration test and the standard penetration test are consistent in evaluating the effect of consolidation of compacted sand foundation,however,the correlation between the secondary deformation modulus and the test results of the foundation coefficient is poor and cannot be replaced.