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Evaluation and Control of Subgrade Compaction Uniformity Based on Spatial Interpolation and Regression Analysis

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DOI: 10.23977/jceup.2023.051102 | Downloads: 8 | Views: 215

Author(s)

Shiqing Zhang 1, Guangqing Yang 2,3, Jiancheng Zhang 1, Xujia Li 2

Affiliation(s)

1 Shijiazhuang Expressway Group Co., LTD, Shijiazhuang, 050000, China
2 State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang, 050043, China
3 Key Laboratory of Roads and Railway Engineering Safety Control (Shijiazhuang Tiedao University), Ministry of Education, Shijiazhuang, 050043, China

Corresponding Author

Xujia Li

ABSTRACT

In this paper, the compaction uniformity of subgrade is studied by single point subgrade com-paction detection index. The subgrade compaction test section of Jingde Expressway and Jingxiong Expressway is selected. PFWD and GeoGauge are used to detect subgrade pressure, and two detection indexes of resilience modulus and Young's modulus are obtained. According to the local statistical principle, the spatial interpolation of different subgrade detection indexes is carried out. Through the comparison of simulation accuracy and cartographic analysis, it is found that the ordinary kriging interpolation has higher accuracy and better visualization effect. By integrating the results of Kriging interpolation with the preliminary exploratory data analysis, it is concluded that the overall compaction uniformity of the subgrade is relatively concentrated, and the uniformity on both sides of the cross section is relatively discrete and the middle is relatively concentrated.

KEYWORDS

Spatial interpolation, regression analysis, Resilience modulus, Young's modulus, Compaction uniformity of subgrade

CITE THIS PAPER

Shiqing Zhang, Guangqing Yang, Jiancheng Zhang, Xujia Li, Evaluation and Control of Subgrade Compaction Uniformity Based on Spatial Interpolation and Regression Analysis. Journal of Civil Engineering and Urban Planning (2023) Vol. 5: 12-21. DOI: http://dx.doi.org/10.23977/jceup.2023.051102.

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