Numerical Analysis of the Ground Anchor and Row Piles in Mudstone Dip Slope

Abstract:

It is a dip slope with mudstone and sandstone interbedded at the northward 363K National Highway NO.3. in Taiwan. The Figure 1 showed the slope sliding due to continuous heavy rain on August 19, 2010. This study analyses the slope stability by the finite element method of program PLAXIS-2D, and explores the suitability of various control engineering methods. It is named analysis before design with anchors in this study before September 2010. The aim is to search the original parameters of the ground by comparing a potential sliding surface with monitor data of site. Then countermeasure analyzes the impact based on the loss of anchor prestress and the row of piles set. From the results of analysis, sliding surface analysis and the data which was derived from the early monitor judgments are consistent. The ground anchor has been unable to achieve good stable slope effect for the slope sliding, due to heavy rains. However, the rows of pile construction significantly improved the stability of the slope.

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 703-707
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.703
• Online since: October 2012
• Authors: Wen Tsung Liu, Hong Yuan Tsai, Ming He Tu
• Keywords: Dip Slope, Finite Element Method (FEM), Ground Anchor, Row of Piles

References

[1] Wei-Te, Wu. "Slope stability analysis methods and the use of" Modern construction magazine, Zhaolin Press,（1992）. (in Chinese)

[2] Lin, De-Gui, Bo-Shun Huang, Miau-Bin Su submitted to Journal of Chinese Soil and Water Conservation (2005). (in Chinese)

[3] National Highway Engineering Bureau of Taiwan Area: Report of monitoring and testing data analysis and evaluation of the slopes of in Pingtung Sections of National Highway No. 3 , (2010). (in Chinese)

[4] National Highway Engineering Bureau of Taiwan Area: Geological drilling test report, detailed design report in Tianliao Yanchao  and  Xinhua Tianliao sections of National Highway No. 3.(in Chinese)

[5] Nan-Hwa Liao: Assessment of Empirical Soil Properties and its Applications in Performance Analysis, National Cheng Kung University, master's thesis (2003).

[6] R. Zenter*, P.Y. Hicher, G. Moulin submitted to Computers and Geotechnics (2001).