Application of cross-hole electromagnetic wave CT in detection of post-grouting effect

被引：0

作者：

Huang S.-G. ^{[1
]}

Hu Y.-J. ^{[1
]}

Fu Z. ^{[1
]}

Li Z.-S. ^{[1
]}

机构：

[1] College of Engineering, China University of Geosciences, Wuhan

来源：

Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2019年 / 41卷

关键词：

Absorption coefficient; CT; Electromagnetic wave; Post grouting;

D O I：

10.11779/CJGE2019S1057

中图分类号：

学科分类号：

摘要：

Different post grouting conditions are simulated by using MATLAB, and the laws of the diffusion pattern of the cement slurry and the distribution of the shape of the reinforcement zone are analyzed. Combined with the CT detection results of piles of Duxiapu Bridge in Taizhou Bay, the following main conclusions are drawn: (1) ART and SIRT algorithms are convergent, the inversion results become stable when the ART algorithm iterates 10 times and the SIRT algorithm iterates 50 times. (2) Both the ART and SIRT algorithms based on the straight-line theory can identify the interface of the model piles, the shape of the pile-end consolidation, and the height of the slurry, and the SIRT algorithm is better in general. (3) The pile tests of Duxiapu Bridge in Taizhou Bay show that the distribution of underground media around the piles predicted by the inversion results is in good agreement with the actual situation, which reflects the applicability of the identification laws of the grouting effect summarized in numerical simulation in engineering practice to some extent. © 2019, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.

引用

页码：225 / 228

页数：3

共 5 条

[1]

Huang S.-G., Peng C.-W., Principle and Engineering Practice of Post-grouting Technology, (2016)

[2]

He J., Zhao H.-S., Gu X.-P., Et al., Inspection technique of concrete filling pile after grout injection, Forum on Major Engineering Geology Issues in Northwest China, (2002)

[3]

Huang S.-G., Gong W.-M., Application of CT technology in the detection of super-long pile post-grouting effect, The 1st China Water Conservancy and Hydropower Geotechnical and Engineering Symposium, (2006)

[4]

Huang Y.-L., Liu J.-D., Xu H.-G., Et al., Checking distribution of post grouting at bottom of long piles by ultrasonic CT, Chinese Journal of Geotechnical Engineering, 28, 9, pp. 1148-1152, (2006)

[5]

Li C.-Y., Zhao J.-H., Xu B., Et al., Mechanism & performance test of bored pile with post grouting at base, Engineering Quality, 2, pp. 46-49, (2005)

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