昔格达土路基填料压实度影响因素的试验研究

以昔格达土作为路基填料,进行了该填料的含水量、颗粒级配、施工工艺对压实度影响的相关性试验。试验结果表明:昔格达土填料含水量在12%～17%之间时,路基的压实效果最佳;压实前后其Cu和Cc均满足要求,昔格达土填料是一种级配好的填料;16 t压路机碾压方式下适合昔格达土填料的松铺厚度为30～35 cm,18 t压路机碾压方式下为35～40 cm;2种压路机均以采用先强振后弱振的碾压方式压实度效果较好;16 t压路机最佳的碾压遍数为6遍、18 t压路机为5遍时,效果最好。

Experimental Study of Influence Factors of the Compaction Degree of Xigeda Roadbed Filling

Xigeda soil as roadbed filling was studied in the paper.The influence of moisture content,gradation composition,effect of construction process on degree of compaction was studied.The results demonstrated that: degree of compaction was the best as the moisture content of Xigeda Filling was 12%~17%;Cu and Cc of Xigeda Filling could meet the needs before and after compaction,therefore it was a good-grading filling;loose laying depth of Xigeda Filling was 30cm~35cm under 16T road roller rolling and 35cm~40cm under 18T road roller rolling;higher degree of compaction was achieved when firstly applying strong vibration and then weak vibration with road roller;it should be compacted six times with 16T road and five times with 18T road roller.