高强土工格室加筋砂土性状的三轴试验

doi:10.12066/j.issn.1007-2861.1721

Abstract

Abstract:

Strength and deformation characteristics of geocell reinforced soil were studied in a triaxial test. Factors that affected strength and their variation pattern were investigated under different reinforcement conditions. With the same amount of reinforcement, choice of reasonable and economical reinforcement forms was analyzed. The following results are obtained. Strength and anti-deformation capacity of the soil are clearly intensified with reinforcement. Strength is far more improved by increasing the height of geocell than reducing the node spacing when the confining pressure is constant. With the same amount of reinforcement, using large cell height and low reinforced layers is more reasonable. Analysis of the reinforcement effect coefficient and strength shows that the coefficient is reduced with the increasing of confining pressure. Cohesive strength and angle of internal friction of the soil are improved by geocell reinforcement. The improvement of cohesive strength is more significant.

Key words: amount of reinforcement material, high strength geocell, reinforced soil, triaxial test

PENG Aixin, ZHANG Mengxi, ZHU Huachao. Triaxial test of high strength geocell reinforced soil[J]. Journal of Shanghai University（Natural Science Edition）, 2017, 23(4): 590-599.

References

[1] Schdosser F, Long N T. Recent result in French research on reinforced earth [J]. Journal of the Construction Division, 1974, 100: 223-237.
[2] 陈昌富, 刘怀星, 李亚平. 草根加筋土的室内三轴试验研究[J]. 岩土力学, 2007, 28(10): 2041-2045.
[3] 施利国, 张孟喜, 曹鹏. 聚丙烯纤维加筋灰土的三轴强度特性[J]. 岩土力学, 2011, 32(9): 2721-2728.
[4] 陈群, 刘垂远, 何昌荣. 对两种材料加筋土的三轴试验研究[J]. 路基工程, 2009(1): 48-50.
[5] 刘芳, 孙红, 葛修润. 玻璃纤维土的三轴试验研究[J]. 上海交通大学学报, 2011, 45(5): 762-771.
[6] 魏红卫, 喻泽红, 尹华伟. 土工合成材料加筋粘性土的三轴试验研究[J]. 工程力学, 2007, 24(5): 107-113.
[7] 雷胜友. 加筋黄土的三轴试验研究[J]. 西安公路交通大学学报, 2000, 20(2): 1-5.
[8] 赵川, 周亦唐. 土工格栅加筋碎石土大型三轴试验研究[J]. 岩土力学, 2001, 22(4): 419-422.
[9] 吴景海. 土工合成材料与土工合成材料加筋砂土的相关特性[J]. 岩土力学, 2005, 26(4): 538-541.
[10] 张孟喜, 闵兴. 单层立体加筋砂土性状的三轴试验研究[J]. 岩土工程学报, 2006, 28(8): 931-936.
[11] 张孟喜, 张石磊, 黄瑾. 低超载下条带式带齿加筋界面特性[J]. 岩土工程学报, 2007, 29(11): 1623-1629.
[12] 张孟喜, 陈高峰, 朱引, 等. H-V加筋饱和砂土性状的三轴试验研究[J]. 岩土力学, 2010, 31(5): 1345-1351.
[13] Latha G M, Murthy V S. Effect of reinforcement form on the behavior of geosynthetic reinforced sand [J]. Geotextiles and Geomembranes, 2007, 25: 23-32.
[14] Chen R H, Huang Y W, Huang F C. Confinement effect of geocells on sand samples under triaxial compression [J]. Geotextiles and Geomembranes, 2013, 37: 35-44.
[15] Rajagopal K, Krishnaswamy N R, Latha G M. Behaviour of sand confined with single and multiple geocells [J]. Geotextiles and Geomembranes, 1999, 17(3): 171-184.
[16] Nair A M, Latha G M. Large diameter triaxial tests on geosynthetic-reinforced granular subbases [J]. Journal of Materials in Civil Engineering, 2014, 27(4): 04014148.

Triaxial test of high strength geocell reinforced soil

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 7

Recommended Articles

Metrics

Comments

[1]	Zhiheng DAI, Mengxi ZHANG, Juan HOU, Jiazheng LI. Experimental comparative study of new lock enhanced integral geocell and geogrid mesh elements reinforced foundation [J]. Journal of Shanghai University（Natural Science Edition）, 2019, 25(5): 796-806.
[2]	LU Shaoke, XIA Xiaohe, ZHANG Mengxi, YANG Jimang. Triaxial analysis of particle flow in geocell reinforced sand samples [J]. Journal of Shanghai University（Natural Science Edition）, 2019, 25(1): 132-140.
[3]	LIU Feiyu, ZHANG Duanyang, WANG Jun. Cyclic and post-cyclic direct shear behavior of sandwich reinforcement-soil interface under different sand particle sizes [J]. Journal of Shanghai University（Natural Science Edition）, 2018, 24(3): 456-466.
[4]	YANG Lei1, ZHANG Mengxi1, PENG Jimin2, SUN Zhou1, GAO Ang1. Strength property and interaction mechanism of sand reinforced with hemispherical inclusions [J]. Journal of Shanghai University（Natural Science Edition）, 2016, 22(5): 656-664.
[5]	XU Zhi-liang, SUN De-an, ZHANG Jin-yi. Mechanical Behavior of Fly Ash and Its Elastoplastic Modeling [J]. Journal of Shanghai University（Natural Science Edition）, 2013, 19(1): 106-110.
[6]	SUN De-an, YANG Xian-cai. Experimental Study on Hydro-Mechanical Behavior of Unsaturated Silt [J]. Journal of Shanghai University（Natural Science Edition）, 2012, 18(6): 627-633.
[7]	DIAO Gang-Fei, ZHANG Meng-Chi, CA Chun. Pull-out Test on Interface Characteristics of Grid Reinforcement of Denti-inclusions [J]. Journal of Shanghai University（Natural Science Edition）, 2011, 17(6): 785-791.