文章基本信息

标题：Correlation analysis of quality testing indexes of coarse grained soil subgrade of high-speed railway
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作者：Qiyun Wang ; Liuqiang Chen ; Huaming Lin 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：304
期号：5
页码：1-8
DOI：10.1088/1755-1315/304/5/052025
出版社：IOP Publishing
摘要：The compaction quality of subgrade is controlled by such indexes as high speed railway coarse soil subgrade adopts foundation coefficient K ₃₀, second deformation modulus E _v2 and dynamic deformation modulus E_vd , but the three detection principles are similar. For the purpose of reducing the detection workload and improving the detection efficiency, based on a brief analysis of the test principles of the three indicators, this paper carries out the filling and testing of coarse grained soil subgrade, obtains the values of 10 groups of K ₃₀, E _v2 and E_vd , and analyzes the correlation of K ₃₀, E _v2 and E_vd . The results shows that both K ₃₀ and E _v2 have a good linear relationship with E_vd and establish a corresponding functional relationship. The quality inspection scheme for coarse grained soil subgrade filling indirectly judged by the dynamic deformation modulus E_vd and the secondary deformation modulus E _v2 is proposed.