Effects Analysis of Expansive Soil Slope Reinforced with Geogrid Considering Long Term Weathering

Abstract:

Article Preview

Considering the long-term atmospheric weathering effects on expansive soil strength, geogrid reinforcement effects of expansive soil slope are analyzed with FLAC3D. The research in this paper shows that: (1) when the reinforcement is deeper than the weathered layer, the inhibition effect of soil stress and displacement increases with increasing length of geogrid, in this case a critical slip arc moves away from the slope surface, and the maximum safety factor of slope stability increases approximately 50 percent; the grid stress decreases with the increasing height of grid location; (2) when the reinforcement depth exceeds the weathered layer 1 m, the denser geogrid in the vertical direction, the smaller shear stress and horizontal deformation in reinforced region, so that the slope safety factor increase and the critical slip arc moves towards the slope back. However,if the geogrid length exceeds the weathered layer more than 3 m, the vertical grid distance change has no significant influence on the safety factor and the location of critical slip surface.

Info:

Periodical:

Advanced Materials Research (Volumes 261-263)

Edited by:

Jingying Zhao

Pages:

1319-1323

DOI:

10.4028/www.scientific.net/AMR.261-263.1319

Citation:

J. Z. Sun and W. H. Xiao, "Effects Analysis of Expansive Soil Slope Reinforced with Geogrid Considering Long Term Weathering", Advanced Materials Research, Vols. 261-263, pp. 1319-1323, 2011

Online since:

May 2011

Export:

Price:

$35.00

[1] G. E. Blight: Geotechnique Vol. 4(1997), p.715–766.

[2] Zongze Yin, Jie Wei, Junping Yuan et al.: Journal of Hydraulic Engineering, Vol. 1 (2010), pp.1-6, in Chinese.

[3] Hailin Yao, Shaohe Zheng and Shouyi Chen: Chinese Journal of Geotechnical Engineering Vol. 5 (2001), pp.43-47, in Chinese.

[4] Quan Zheng, Zhengya Zhang: Journal of Wuhan Polytechnic University Vol. 4(2005), pp.70-72, in Chinese.

[5] Mingjian Hu, Lingwei Kong, Aiguo Guo et al.: Rock and Soil Mechanics Vol. 9(2007), pp.1861-1865, in Chinese.

[6] Chen shanxiong: Study on engineering behaviours of expansive soil and its measures ( Huazhong university of science and technology, Wuhan 2006) , in Chinese.

[7] Jujiang Shen: Chinese Journal of Geotechnical Engineering Vol. 6(2004), pp.866-869, in Chinese.

[8] Wei Guo: Yangtze River Vol. 9(2007), pp.8-10, in Chinese.

In order to see related information, you need to Login.