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路基是公路的主要承重层,路基压实质量的好坏关系到整个公路的使用性能。目前由于路基的压实质量不好造成的路面结构早期破坏的现象越来越严重。因此必须对路基的压实质量严格控制。我国高速公路正逐步向西部地区发展,由于天然砂砾具有透水性好、沉降量小和强度高等优点,当在建高速公路附近的天然砂砾来源丰富时,为了改善不良地质,常常采用天然砂砾进行换填。然而,现有的天然砂砾压实质量控制方法不能满足工程的实际需要,有必要对其改进和完善。本文结合实际工程由沉降差法和基于含石量与最大干密度的灌砂法进行天然砂砾路基压实质量探析。
Subgrade is the main bearing layer of the road, the quality of subgrade compaction related to the performance of the entire highway. At present, the phenomenon of early destruction of the pavement structure caused by poor compaction of roadbed is more and more serious. Therefore, the compaction quality of roadbed must be strictly controlled. Due to the good water permeability, small settlement and high strength of natural grit, natural grit is often used to improve the bad geology when the natural gravel source near the expressway is rich. fill. However, the existing natural gravel compaction quality control method can not meet the actual needs of the project, it is necessary to improve and perfect it. In this paper, based on the actual project by the settlement difference method and based on the amount of stone and the maximum dry density of sand filling method of compaction quality of natural gravel roadbed.