Study of Lower Bound Method for Plastic Limit Analysis of Wedge on Consideration of Anchor Bolt

Zhi Lin Liang; Ze Li

doi:10.4028/www.scientific.net/AMM.444-445.966

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 444-445Study of Lower Bound Method for Plastic Limit...

Study of Lower Bound Method for Plastic Limit Analysis of Wedge on Consideration of Anchor Bolt

Abstract:

The massive rock slope is made up of rocks and structural surface. The existence and strength of the structural surface decides the stability of the rock mass. By adopting the lower bound method for the plastic limit analysis of wedge slope, we can easily calculate the stability of the rocky slope under various circumstances. To apply this method, we first took the wedge-shaped slide block as a complex of rigid block and structural surface for the analysis of the slope stress under the function of anchor bolts, the integrated function of rocks and structural surfaces being considered. Then, on the basis of the lower bound theory for the plastic limit analysis, a mathematical programming model which takes safety factor of slope stability as the object function is established. This model has to meet the equilibrium condition of the bolt, the Mohr-Coulomb yield condition and the boundary condition of slope. In the end, a classic model of wedge is analyzed and its lower bound solution is worked out. This result is compared to the result worked out by limiting equilibrium to test the validity of the measure and procedure used in this paper.

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Periodical:

Applied Mechanics and Materials (Volumes 444-445)

Pages:

966-970

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.444-445.966

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Online since:

October 2013

Authors:

Zhi Lin Liang, Ze Li

Keywords:

Block, Factor of Safety, Lower Bound Method, Plastic Limit Analysis, Wedge Slope

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