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针对常张高速公路采用冲击压实技术压实土石混填路基的问题,选取试验段进行了不同虚铺厚度路基的施工工艺及质量控制等试验研究,提出了虚铺厚度、冲压遍数、冲压沉降率(单级沉降量)、填料最大粒径等施工控制参数.其中不同虚铺厚度填料有相应的最佳碾压遍数,并从技术经济的角度提出了最佳的虚铺厚度及其碾压遍数,并建议施工控制以沉降率为主.图3,表4,参9.
In view of the problem of compaction of soil-rock mixed embankment by impact compaction technology in Chang-Zhang expressway, the construction process and quality control of embankment with different imaginary-paved thickness are selected in the test section. The effects of virtual thickness, punching number, Sedimentation rate (single-stage settlement), the maximum particle size of the filler and other construction control parameters.Among them, the different optimal thickness of fillers has the best rolling times, and from the technical and economic point of view, Rolling the number of times, and recommended that the construction control to the main settlement .Figure 3, Table 4, reference 9.