Limit equilibrium based design approach for slope stabilization using multiple rows of drilled shafts |
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| Institution: | 1. INSA Rennes, IRISA, 35708 Rennes, France;2. University of Luxembourg, SnT, 1359 Luxembourg, Luxembourg;3. Lucerne University of Applied Sciences and Arts, 6048 Horw, Switzerland |
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| Abstract: | In this paper, a limiting equilibrium based methodology, incorporating the method of slices and arching effects of the drilled shafts, is developed for optimizing the use of multiple rows of drilled shafts. This proposed method is focusing on the number of rows, the location of each row, the dimension and spacing of the drilled shafts. Three design criteria are used for optimization: target global factor of safety, the constructability and service limit. A PC-based program called M-UASLOPE has been coded to allow for handling of complex slope geometry, soil profile, and ground water conditions. A design example is presented to illustrate the application of the M-UASLOPE program in the optimized design of multiple rows of drilled shafts for stabilizing the example slope. |
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| Keywords: | Landslide Design Slope stability Drilled shafts Multiple rows |
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