回填土地基强夯处理效果检验方法对比研究

该文收集整理了广东省电力行业工程建设中的强夯加固全风化花岗岩及残积土回填地基工程实例资料,包括夯前土的物理性质及夯后现场检测中原位测试及室内土工试验数据。以土的粒组特征为依据将回填土分类,基于平板载荷试验,分别分析了标贯试验、动探试验及静力触探试验法进行回填土地基强夯处理后承载力及变形模量检测的适宜性,归纳了标贯击数N、动探击数N63.5、比贯入阻力Ps与地基承载力特征值及变形模量的统计规律,分析了测试结果的影响因素,这对于相似地质条件的强夯处理地基的检测有一定的参考价值。

Comparative Studies on Testing Method for Dynamic Consolidation Effect of Backfill Foundation

The study collected a great deal of testing data from engineering projects about dynamic consolidation granite and residual soils backfill foundation in power construction in Guangdong province.The testing data include the physical characteristic before compaction,in situ testing data after compaction and soil test data.The backfill were classified into three classes according to the fraction of soil.Based on the plate loading testing(PLT),the suitability of standard penetrating testing(SPT),dynamic penetrating testing(DPT) and core penetrating testing(CPT),the bearing capacity and deformation modulus of dynamic consolidation backfill foundation were evaluated are tested.The statistic relationships between N,N63.5,Ps and characteristic values of bearing capacity and deformation modulus of dynamic consolidation backfill foundation were also generalized,as well as the influencing factors of testing results were analyzed.It has some reference value on ground treatment detection of dynamic consolidation backfill foundation for similar engineering geological conditions.