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针对我国客运专线路基压实检测方法和检测指标过多,利用武广客运专线岳阳段2种典型填料的击实试验和现场4种检测方法的检测结果,对路基压实检测方法与检测指标进行分析。研究结果表明:对中、粗颗粒填料用统一的孔隙率来控制压实度具有不合理性,基床底层的28%和本体的31%的孔隙率要求与相应的压实度95%与92%不匹配;一次变形模量Ev1和地基系数K30之间有较好的相关性,可用同一函数进行拟合,当K30为150 MPa/m时,Ev1约为35 MPa;建议完善路基压实检测方法,修正检测指标以保证路基压实质量,简化路基压实检测的程序。
In view of the embankment compaction test method and test index of Passenger Dedicated Line in our country are too many, the compaction test and the test results of four kinds of typical test methods of Yueyang section of Wuhan-Guangzhou Passenger Dedicated Line are used to test the compaction method and test index analysis. The results show that it is unreasonable to control the compaction degree with the uniform porosity of medium and coarse granular fillers. The porosity of 28% of the bottom bed and 31% of the bulk of the bed requires 95% of the compaction degree and 92% % Does not match the first deformation modulus Ev1 and the foundation coefficient K30 has a good correlation between the same function can be fitted, when the K30 is 150 MPa / m, Ev1 about 35 MPa; proposed to improve subgrade compaction testing Methods to correct testing indicators to ensure the quality of subgrade compaction, to simplify the embankment compaction testing procedures.