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路基土含水量对高速公路的运营质量有着重要影响,本文现结合广惠高速公路工程实际,对加宽区域路基土含水量等工程指标进行试验研究,以及对路面破损区域选择部分病害较严重路段进行钻孔取样测定路基土含水量的变化,并和现场测试结果进行对比分析,结果表明:近远带路床土含水量大部分均大于最佳含水量,路床土含水量随深度呈现不同的变化,致使近远带路基土的压实度呈现出不同程度的降低;填方段非病害段停车带路基土的含水量大于重车道的;重车道病害段路基土的含水量大于非病害段的;而零填挖段与挖方段路基土含水量的变化并没有明显的规律,这与路面破损程度、排水条件、路基土的种类等多种因素有关。研究成果为高速公路的安全运营提供理论依据,并指导工程实际。
Subgrade soil moisture content of highway quality of operation has an important impact, this article is now combined with the Guanghui highway engineering practice, to widen the area of subgrade soil moisture and other engineering indicators, as well as the pavement damage area selection of some serious disease sections The change of water content in subgrade soil was measured by drilling sampling, and the result was compared with the field test results. The results showed that most of the soil moisture in the near-far-zone roadbed was greater than the optimum water content, and the soil moisture content of the roadbed varied with depth The soil compaction degree of subgrade soils in the near and far zones showed different degrees of reduction. The water content of subgrade soils in non-disease section parking zone was larger than that in heavy lanes; However, there is no obvious regularity about the change of water content of subgrade between zero filling and excavation and excavation, which is related to the degree of pavement damage, drainage conditions and the type of subgrade soil. The research results provide theoretical basis for the safe operation of expressway and guide the actual project.