中文摘要：

基于实际工程需要,设置试验段,对含红砂岩砾粒的赣州红黏土作为路基填料时的填筑特性进行了研究。试验采用振动碾压、冲击碾压及二者组合碾压对不同虚铺厚度的土层进行碾压试验,并结合动应力监测,分析验证了不同碾压机械,碾压效果不同的原因。同时在试验的过程中对碾压施工引起的环境振动进行监测,分析了碾压振动的安全距离。在试验检测过程中,采用EVD和K30同时检测,比对二者之间的关系,为含红砂岩砾粒的红黏土碾压检测提供参考。研究表明：对于江西赣州含红砂岩砾粒的红黏土填料,宜虚铺厚度为40~50 cm,先采用冲击碾压,压实度达到80%以上时,再采用振动碾压,效率最高,碾压施工的振动安全距离为25 m;对于含红砂岩砾粒的红黏土地基填料压实的检验,采用EVD初检时,可参考公式K30=1.91EVD＋8计算地基K30值。

英文摘要：

Based on the actual demand for engineering projects, this study explored the characteristics of red clay containing red sandstone gravel grains in Ganzhou filling as roadbed filling. In the test, the roller compaction test was carried out by using vibratory rolling, impact roiling and combined rolling. The causes of different compaction effects were analyzed with combination of dynamic stress monitoring. At the same time, the environmental vibration caused by roller compaction was monitored during the test, and the safe distance of the rolling vibration was analyzed. In the test,EVD and K30 were adopted to detect the effect of rolling simultaneously in order to obtain the relationship between them, which may provide reference for the detection of red clay roadbed contain- ing red sandstone gravel. The results showed that the suitable depth for the red clay containing red sandstone gravel in Jiangxi province is 40 ~ 50 cm. It is better to use impact rolling until the compactness of roadbed reaches 80%, and then the vibration rolling is adopted. The vibration safety distance of rolling compaction con- struction is 25m. For the compaction test of red clay containing red sandstone gravel,the value of K30 can be calculated by formula K30=2.03EVD ＋ 23 during the initial inspection of EVD.