DCP和长杆贯入仪在粉砂土路基检测中的应用

Application of DCP and Long Rod Penetration Instrument in Silty Sand Roadbed Test

依托郑(州)民(权)高速公路开封段粉砂土路基,通过DCP、长杆贯入仪、现场CBR三种方法的定点对比试验,对三种方法测定的数据结果间的相关性进行了研究与分析,最后建立了DCP、长杆贯入仪、现场CBR值三者之间的相关关系.结果表明:三者测试方法之间存在良好的相关性,可以使用DCP、长杆贯入仪快速检测技术对粉砂土路基进行质量控制,为实际应用提供技术参考.

Based on silty sand roadbed of Zhengmin（ From Zhengzhou to Minquan） Expressway Kaifeng sec- tion, the DCP, long rod penetrometer and field CBR point comparison test was perfored and on three kinds of measured data correlation is studied. Finally,the relationships gmong DCP, long road penetration instrument, field CBR values was established. The results show that good correlation exists between the three test methods, and use the DCP, a long rod penetration instrument technology for rapid detection of silty sand roadbed quality control is feasible method, and also can be useful reference for practical use.