Large-scale triaxial tests on unit cell of composite soil with cement-soil columns under static loading

YE Guan-bao; HUANG Yi-wei; ZHANG Zhen; CHEN Yong; ZHENG Wen-qiang

doi:10.11779/CJGE2021S2014

Volume 43 Issue S2

Turn off MathJax

Article Contents

Abstract

References

Chinese Journal of Geotechnical Engineering > 2021 > 43(S2): 60-63. > DOI: 10.11779/CJGE2021S2014

YE Guan-bao, HUANG Yi-wei, ZHANG Zhen, CHEN Yong, ZHENG Wen-qiang. Large-scale triaxial tests on unit cell of composite soil with cement-soil columns under static loading[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(S2): 60-63. DOI: 10.11779/CJGE2021S2014

Citation:

PDF (1242 KB)

Large-scale triaxial tests on unit cell of composite soil with cement-soil columns under static loading

YE Guan-bao^{1, 2,},
HUANG Yi-wei^{1, 2},
ZHANG Zhen^{1, 2, ,},
CHEN Yong^{1, 2},
ZHENG Wen-qiang^{1, 2}

1.
Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China
2.
Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China

More Information

Received Date: August 15, 2021
Available Online: December 05, 2022

Graphical Abstract

Abstract

Abstract

The cement-soil column, as one of the commonly-used ground improvement methods, can effectively improve the bearing capacity of foundation and reduce settlement. There have been many researches focused on this topic. However, the stress state of the composite soil is not clear in field and model tests, therefore, its real mechanical behavior is difficult to be obtained. A series of large-scale triaxial tests are conducted to investigate the unit cell of the composite soil with cement-soil columns under static loading. The influences of replacement ratio and confining stress on the peak and residual strengths are gained. An empirical method for calculating the equivalent cohesion of the composite soil is proposed, providing a reference for the design of composite foundation with cement-soil columns.
- cement-soil pile,
- composite foundation,
- mechanical behavior,
- equivalent shear strength,
- large-scale triaxial test

FullText(HTML)

References (9)

References

[1]	刘慧芬, 郑伟锋, 程春香, 等. 水泥土搅拌桩加固软土地基施工质量控制[J]. 地基处理, 2020, 2(6): 527-532. https://www.cnki.com.cn/Article/CJFDTOTAL-DJCL202006019.htm LIU Hui-fen, ZHENG Wei-feng, CHENG Chun-xiang, et al. Construction quality control of cement mixing pile for soft ground treatment[J]. Journal of Ground Improvement, 2020, 2(6): 527-532. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-DJCL202006019.htm
[2]	刘汉龙, 赵明华. 地基处理研究进展[J]. 土木工程学报, 2016, 49(1): 96-115. https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC201601013.htm LIU Han-long, ZHAO Ming-hua. Review of ground improvement technical and its application in China[J]. China Civil Engineering Journal, 2016, 49(1): 96-115. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC201601013.htm
[3]	章定文, 范礼彬, 刘松玉, 等. 水泥土搅拌桩复合地基固结机理室内模型试验[J]. 中国公路学报, 2014, 27(12): 1-9. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGGL201412002.htm ZHANG Ding-wen, FAN Li-bin, LIU Song-yu, et al. Laboratory model tests on consolidation mechanism of soft clay improved by deep mixing cement columns[J]. China Journal of Highway and Transport, 2014, 27(12): 1-9. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGGL201412002.htm
[4]	马洪友, 刘林. 水泥搅拌桩复合地基承载力研究[J]. 公路, 2013(2): 50-53. https://www.cnki.com.cn/Article/CJFDTOTAL-GLGL201302014.htm MA Hong-you, LIU Lin. Study on bearing capacity of cement mixing pile composite foundation[J]. Highway, 2013(2): 50-53. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GLGL201302014.htm
[5]	LIU F, ZHU K, HU X, et al. Experimental simple shear study of composite soil with cemented soil core[J]. Marine Georesources and Geotechnology, 2019, 37(8): 960-971. doi: 10.1080/1064119X.2018.1513614
[6]	ZHANG Z, XIAO Y, HAN J, et al. Modified equivalent area method for calculating factors of safety against deep-seated failure of embankments over deep-mixed foundations[J]. International Journal of Geomechanics, 2020, 20(3): 1-16.
[7]	水泥土配合比设计规程：JGJ/T 233—2011[S]. 2011. Specification for Mix Proportion Design of Cement Soil: JGJ/T 233—2011[S]. 2011. (in Chinese)
[8]	OMINE K, OCHIAI H, YASUFUKU N. Evaluation of scale effect on strength of cement-treated soils based on a probabilistic failure model[J]. Soils and Foundations, 2005, 45(3): 125-34.
[9]	AHNBERG H, JOHANSSON S E. Increase in strength with time in soils stabilised with different types of binder in relation to the type and amount of reaction products[C]//International Conference on Deep Mixing, 2005-Best Practice and Recent Advances, 2005, Stockholm.

[1]	ZHANG Lucheng, ZHONG Qiming, YANG Meng, PENG Ming, LIU Jiaxin. Centrifugal model tests on overtopping-induced breaching of landslide dams[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(S1): 197-200. DOI: 10.11779/CJGE2023S10029
[2]	WANG Nian-xiang, REN Guo-feng, GU Xing-wen. Permeability similarity of soils in centrifugal model tests[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(S2): 66-70. DOI: 10.11779/CJGE2022S2015
[3]	DU Qiang, ZHOU Jian. Centrifugal model tests on slope failure induced by rainfall[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(S1): 50-54. DOI: 10.11779/CJGE2020S1010
[4]	LI Cong-an, WEN Song-lin, LI Bo, HU Bo. Centrifugal model tests on new type structure of CFRD[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(s1): 214-218. DOI: 10.11779/CJGE2017S1042
[5]	ZHAO Tian-long, CHEN Sheng-shui, FU Chang-jing, ZHONG Qi-ming, HOU Ying-wei. Centrifugal model tests on section form of drainage channel of barrier dams[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(10): 1943-1948. DOI: 10.11779/CJGE201710025
[6]	CHEN Sheng-shui, FANG Xu-shun, ZHONG Qi-ming, LI Yun-hui. Centrifugal model tests and numerical simulations for break of earth-rock dams due to overtopping[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(5): 911-931. DOI: 10.11779/CJGE201405017
[7]	ZHENG Gang, LI Shuai, DIAO Yu. Centrifugal model tests on failure mechanisms of embankments on soft ground reinforced by rigid piles[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(11): 1977-1989.
[8]	Development and application of a slope excavation device for centrifugal model tests[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(10).
[9]	Numerical model for clay core dam break due to overtopping failure[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(4).
[10]	YANG Junjie, LIU Qiang, LIU Fei, TOYOSAWA Y, HORII N. Discussion on error of centrifugal acceleration in centrifugal model tests[J]. Chinese Journal of Geotechnical Engineering, 2009, 31(2): 241-246.