An Analysis of Slope Stability of Sand Embankment with Shear Strength Reduction (SSR) Method

Abstract:

Comparing with conventional expressway embankment filled with clay only, the sand embankment tipped by intensely-weathered rock (IWR) can effectively reduce the consumption of cultivated land resource caused by the construction of expressway engineering. So it is significant to research the constructions of sand embankment tipped by IWR if local sand resources are enough. Combined with the construction of Qing-Lin freeway, in China, the slope stability of the embankment filled with sand and tipped by IWR outside was analyzed in the paper, and the analysis was conducted by the strength reduction method. The effects of the changes of compaction, water content, ratio of slope, height of the embankment and different IWR-width on the safety factor of the slope stability were investigated. The results indicate that, when the height of embankment is constant, the ratio of slope is the most important factor which influences the stability of side slope, and the IWR-width does not have a decisive effect on the safety factor on subsoil condition and it can be determined according to the convenience of site construction.

• Periodical: Advanced Materials Research (Volumes 152-153)
• Pages: 1017-1023
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.152-153.1017
• Online since: October 2010
• Authors: Shu Tang Liu, Wei Dong Cao, Ying Yong Li, Yong Shun Yang
• Keywords: Intensely-Weathered Rock (IWR), Sand Embankment, Shear Strength Reduction (SSR) Method, Slope Stability

References

[1] Ministry of transportation of the People's Republic of china, Specification for Design of Highway Subgrades (JTG D30—04). China Communications Press, 2004, China.

[2] Ministry of transportation of the People's Republic of china, Technical Specification for Consruction of Highway Subgrades (JTG F—2006). China Communications Press, 2007, China.

[3] Zheng Yingren and Zhao Shangyi. Chinese Journal of Rock Mechanics and Engineering Oct., 2004, 23(19) 3381～3388.

[4] LIU Mingwei，ZHENG Yingren. Chinese Journal of Rock Mechanics and Engineering, Vol. 25, No. 8, Aug., (2006).

[5] Maosong Huang, Cang-Qin Jia, Computers and Geotechnics 36 (2009) 93–101.

[6] Ministry of transportation of the People's Republic of china, Test Methods of Soils for Highway Engineering. China Communications Press (JTG E40-2007), 2007, China.

[7] ZHANG Pei-wen1, CHEN Zu-yu2. Rock and Soil Mechanics. Vol. 27 No. 2, Feb. (2006).

[8] WANG Yu-suo, Rock and Soil Mechanics, Vol. 29, No. 6, Jun. (2008).