Limiting Equilibrium Method for Slope/Drill Shaft System
Mechanical and Civil Engineering
The use of drilled shafts to stabilize an unstable slope has been a widely accepted practice. There are two basic design and analysis issues involved: one is to determine the global factor of safety of the drilled shafts stabilized slope and the other one is to determine the design earth thrust on the drilled shafts for structural design of the shafts. In this paper, a limiting equilibrium method of slices based solution for calculating global factor of safety (FS) of a slope with the presence of a row of drilled shafts is developed. The arching mechanisms due to the presence of the drilled shafts on slope were taken into account by a load transfer factor. The method for calculating the net force applied to the drilled shaft from the soil mass was also developed. The interrelationships among the drilled shaft location on the slope, the load transfer factor, and the global FS of the slope/shaft system were derived utilizing the developed numerical closed‐form solution. An illustrative example is presented to elucidate the use of the solution in optimizing the location of the drilled shafts on slope to achieve the desired global factor of safety of the slope/shaft system.
International Journal for Numerical and Analytical Methods in Geomechanics
Yamin, M., & Liang, R. Y. (2010). Limiting equilibrium method for slope/drilled shaft system. International Journal for Numerical and Analytical Methods in Geomechanics, 34(10), 1063-1075. https://doi.org/10.1002/nag.852
Publisher's Copyright and Source
Copyright © 2009 John Wiley & Sons, Ltd.
Article published in International Journal for Numerical and Analytical Methods in Geomechanics, volume 34, issue 10, July 2010, pages 1063-1075.