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1概述武广高速铁路对路基施工质量提出很高要求,特别是对路基工后沉降的控制十分严格,要求工后沉降小于15mm,而路基填筑质量是保证工后沉降的关键因素之一。长期以来,我国铁路建设一直沿用压实系数(K)、相对密度或孔隙率(n)作为路基设计和施工质量的控制指标。以压实系数作为路基压实质量标准,具有及时指导
1 Overview The Wuhan-Guangzhou high-speed railway places high demands on the quality of subgrade construction. In particular, the control of subsidence after subgrade construction is very strict. The settlement after construction is required to be less than 15 mm. The subgrade filling quality is one of the key factors for post-construction settlement. For a long time, China’s railway construction has been using compaction coefficient (K), relative density or porosity (n) as a control indicator of subgrade design and construction quality. Using compaction coefficient as subgrade compaction quality standard, with timely guidance