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中国高铁路基施工质量检测使用K_(30)、E_(v2)和E_(vd)共3种力学指标及其他参数共同形成质量保障体系,其中K_(30)、E_(v2)和E_(vd)在试验装置及力学性质上具有一定的相似性。为研究其相关关系并探索简化检测体系,采用理论分析、现场试验及有限元分析等方法分析了K_(30)、E_(v2)和E_(vd)的一元线性相关关系。分析结果表明:现场试验、有限元分析的一元线性回归相关系数具有一致性且相关关系趋势一致;K_(30)与E_(v2)之间线性相关性最高;E_(vd)在荷载施加方式上与K_(30)、E_(v2)均不同,反映在相关性上也有一定的差异,E_(vd)与K_(30)的相关性高于E_(v2);在路基施工检测中可以适量地减少K_(30)的测点数量,用E_(v2)及E_(vd)作为补充;E_(vd)试验用作快速试验方法。
The quality assurance system for the construction quality inspection of high-speed railway subgrade in China is as follows: K 30, E v 2 and E vd, In the test device and the mechanical properties of a certain similarity. In order to study the correlation and explore the simplified detection system, the univariate linear correlations of K_ (30), E_ (v2) and E_ (vd) were analyzed by theoretical analysis, field test and finite element analysis. The results show that the correlation coefficients of univariate linear regression in the field test and finite element analysis are consistent and the trend of the correlation is consistent; the linear correlation between K_ (30) and E_ (v2) is the highest; E_ (vd) Which is different from K_ (30) and E_ (v2), and there are also some differences in correlation between E_ (vd) and K_ (30), which is higher than E_ (v2) Reduce the number of K_ (30) measurement points, with E_ (v2) and E_ (vd) as a supplement; E_ (vd) test is used as a rapid test method.