Study on the performance of the micropile-mechanically stabilized earth wall

doi:10.1007/s11629-016-4010-7

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2018 > Vol15 No.4

	Study on the performance of the micropile-mechanically stabilized earth wall
	Zhang, Zhi-chao; Pak, Ronald Y. S.; Chen, Yu-min; Liu, Han-long
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2018
卷号	15 期号:4 页码:825-844
关键词	Mechanically stabilized earth wall Model test Micropile Numerical simulation Stress and deformation behavior
ISSN号	1672-6316
DOI	10.1007/s11629-016-4010-7
文献子类	Article
英文摘要	The Micropile-Mechanically Stabilized Earth (MSE) wall, specially designed for mountain roads, is proposed to improve the MSE wall local stability, global stability and impact resistance of roadside barriers. Model tests and the corresponding numerical modeling were conducted to validate the serviceability of the Micropile-MSE wall and the reliability of the numerical method. Then, a parametric study of the stress and deformation of Micropile-MSE wall based on the backfill strength and interfacial friction angle between backfill and backslope is conducted to evaluate its performance. The test results indicate that the surcharge-induced horizontal earth pressure, base pressure and lateral displacement of the wall panel of Micropile-MSE wall decrease. The corresponding numerical results are nearly equal to the measured values. The basic failure mode of MSE wall in steep terrain is the sliding of backfill along the backslope, while A-frame style micropiles are capable of preventing the sliding trend. The maximum resultant displacement can be decreased by 6.25% to 46.9% based on different interfacial friction angles, and the displacement can be reduced by 6% similar to 56.1% based on different backfill strengths. Furthermore, the reduction increases when the interfacial friction angle and internal friction angle of backfill decrease. In addition, the lateral displacement of wall panel, the deformation of backfill decrease and the tension strain of geogrid obviously, which guarantees the MSE wall functions and provides good conditions for mountain roads.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000429949900012
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/35423]
专题	Journal of Mountain Science_Journal of Mountain Science-2018_Vol15 No.4
推荐引用方式 GB/T 7714	Zhang, Zhi-chao,Pak, Ronald Y. S.,Chen, Yu-min,et al. Study on the performance of the micropile-mechanically stabilized earth wall[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(4):825-844.
APA	Zhang, Zhi-chao,Pak, Ronald Y. S.,Chen, Yu-min,&Liu, Han-long.(2018).Study on the performance of the micropile-mechanically stabilized earth wall.JOURNAL OF MOUNTAIN SCIENCE,15(4),825-844.
MLA	Zhang, Zhi-chao,et al."Study on the performance of the micropile-mechanically stabilized earth wall".JOURNAL OF MOUNTAIN SCIENCE 15.4(2018):825-844.