Centrifugal model test and numerical simulation of pressure grouting in subgrade retrofitting

QIU Yan-jun; LIU Yu-liang; YANG En-hui; XIANG Ke-ming

Volume 14 Issue 5

Turn off MathJax

Article Contents

Article Navigation > Journal of Traffic and Transportation Engineering > 2014 > 14(5): 8-18

Next Previous

QIU Yan-jun, LIU Yu-liang, YANG En-hui, XIANG Ke-ming. Centrifugal model test and numerical simulation of pressure grouting in subgrade retrofitting[J]. Journal of Traffic and Transportation Engineering, 2014, 14(5): 8-18.

Citation:

QIU Yan-jun, LIU Yu-liang, YANG En-hui, XIANG Ke-ming. Centrifugal model test and numerical simulation of pressure grouting in subgrade retrofitting[J]. Journal of Traffic and Transportation Engineering, 2014, 14(5): 8-18.

Citation:

PDF( 1009 KB)

Centrifugal model test and numerical simulation of pressure grouting in subgrade retrofitting

QIU Yan-jun^{1, 2
,},
LIU Yu-liang^{1, 3},
YANG En-hui^{1, 2},
XIANG Ke-ming⁴

1.
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
2.
Highway Engineering Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
3.
China Railway 16th Bureau Group Co., Ltd., Beijing 100081, China
4.
Sichuan Transportation Investment Group Co., Ltd., Chengdu 610041, Sichuan, China

More Information

Author Bio:
QIU Yanrjun (1966-), male, professor, PhD, +86-28-87634347, publicqiu@vip.163.com
Received Date: 2014-04-11
Publish Date: 2014-10-25

Abstract

Abstract

In the practice of pressure grouting in subgrade retrofitting project of Mianyang-Guanyuan Highway, field monitoring, centrifugal model test and numerical simulation were carried out to study the technical process and the influencing factors of pressure grouting in subgrade disease.It is revealed that the geometrical property of subgrade section is the main reason to the differential settlement of subgrade, and then produces pavement premature failure such as longitudinal cracking.Centrifugal model test indicates that two-phase grouting method that with 0.2 MPa at the first stage and 0.4-0.5MPa at the second stage is recommended.The recommended reasonable space between grouting holes is 2.0 m.Economy should be considered in the practice for choosing reasonable concrete mix proportion and maintenance time.Numerical simulation result shows that there are three stages for pressure grouting, such as stress accumulation stage, cracking extension stage and crack widening stage.The pressure for soil splitting increases with the increases of homogeneity and soil strength.
- subgrade engineering,
- pavement cracking,
- pressure grouting,
- centrifugal model test,
- numerical simulation

FullText(HTML)

References(18)

References

[1]	四川省交通厅公路规划勘察设计研究院. 绵广高速公路二期路面病害调查报告[R]. 成都: 四川省交通厅公路规划勘察设计研究院, 2006.
[2]	DENG Wei-dong, ZHANG Xing-qiang, CHEN Bo, et al. Nonlinear FEM analysis of influence of asphalt pavement under non-homogenous settlement of roadbed[J]. China Journal of Highway and Transport, 2004, 17 (1): 12-15. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-ZGGL200401003.htm
[3]	YANG En-hui. Differential settlement of embankments over sloped ground and its influence on pavement structure[D]. Chengdu: Southwest Jiaotong University, 2008. (in Chinese).
[4]	ZHANG Liang, WEI Yong-xing, LUO Qiang. Research on the deformation characteristics of the sloped embankment on the soft soil foundation based on the centrifugal model test[J]. Railway Construction Technology, 2004 (1): 51-53. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-TDJS200401017.htm
[5]	LIU Hong, ZHANG Zhuo-yuan, HAN Wen-xi. Centrifugal model tests for settlement of high embankment[J]. Journal of Southwest Jiaotong University, 2003, 38 (3): 323-326. (in Chinese). doi: 10.3969/j.issn.0258-2724.2003.03.019
[6]	JIANG Xin, WEI Yong-xing, QIU Yan-jun. Numerical simulation of subgrade embankment on sloped weak ground[J]. Journal of Traffic and Transportation Engineering, 2002, 2 (3): 41-46. (in Chinese). http://transport.chd.edu.cn/article/id/200203009
[7]	WEI Yong-xing, LUO Qiang, QIU Yan-jun. Research on engineering characteristics and engineering techniques for filling of slope weak foundation[J]. Journal of Railway Engineering Society, 2006 (9): 10-15. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-TDGC200609002.htm
[8]	JIANG Xin, QIU Yan-jun, WEI Yong-xing. Engineering behavior of subgrade embankments on sloped weak ground based on strength reduction FEM[J]. Chinese Journal of Geotechnical Engineering, 2007, 29 (4): 622-627. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200704026.htm
[9]	QIU Yan-jun, WEI Yong-xing, LUO Qiang. Highway embankments over sloped ground and influence on pavement responses[C]//PENG Qi-yuan, WANG K, QIU Yan-jun, et al. International Conference on Transportation Engineering2007. Chengdu: ASCE, 2007: 1615-1620.
[10]	WANG Sheng-jun. Application of chemical reinforcement method in loess area highway[J]. Journal of China and Foreign Highway, 2003, 23 (4): 93-95. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-GWGL200304032.htm
[11]	RUI Yong-qin, YUAN Hai-li, YUAN Zhen, et al. Processing analysis on roadbed and subgrade instability caused by underground cavity and river in Karst area[J]. Chinese Journal of Underground Space and Engineering, 2005, 1 (7): 1100-1103, 1108. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-BASE2005S1031.htm
[12]	YANG Shi-ji, HAO Zhong-hai, WU Li-jian, et al. Improvement on compaction techniques of highway stone fill embankment[J]. Journal of Highway and Transportation Research and Development, 1999, 16 (4): 1-4. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK199904000.htm
[13]	LI Ning, ZHANG Ping, YAN Jian-wen. Numerical modeling of grouting in geoengineering[J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21 (3): 326-330. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200203006.htm
[14]	LI Lian-chong, YANG Tian-hong, TANG Chun-an, et al. Coupling analysis on hydraulic fracturing process of rock[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22 (7): 1060-1066. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200307002.htm
[15]	TANG Zhi-wei, ZHAO Cheng-gang. Mechanisms of ground heave by grouting and analytical solutions & amp; amp; numerical modeling[J]. Rock and Soil Mechanics, 2008, 29 (6): 1512-1516. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200806015.htm
[16]	VAUGHAN P R. The use of hydraulic fracturing tests to detect crack formation in embankment dam cores[R]. London: Imperial College, 1971.
[17]	BRADY B H G, BROWN E T. Rock Mechanics for Underground Mining[M]. London: Chapman & amp; amp; Hall, 1993.
[18]	YAN Chang-he. Centrifugal model test study of subgrade soil grouting and numerical simulation[D]. Chengdu: Southwest Jiaotong University, 2008. (in Chinese).