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传统的路基压实指标K30由于在测试中不能消除土体的塑性变形、测试结果离散性大,可重复性差,不能反映动荷载对路基的影响。介绍Ev2、Evd检测技术,利用武广铁路客运专线Ⅴ标段路基检测实测数据进行回归分析,推导两者之间相关关系,结果表明:Ev2与Evd两者之间成线性相关。通过建立两者间的线性方程,辅助应用于客运专线铁路路基中,可提高路基检测和施工效率。
The traditional subgrade compaction index K30 can not eliminate the plastic deformation of the soil in the test. The test results have large discreteness and poor repeatability, which can not reflect the influence of dynamic load on the roadbed. The Ev2 and Evd detection techniques are introduced. The regression analysis is carried out by using the measured data of subgrade Ⅴ of Wu - Guang Railway Passenger Dedicated Line to deduce the correlation between them. The results show that there is a linear correlation between Ev2 and Evd. By establishing a linear equation between the two, it can be applied to railway subgrade in passenger dedicated railway line to improve the detection and construction efficiency of subgrade.