United States Department of Transportation
i
Limit Equilibrium Design Framework for MSE Structures with Extensible Reinforcement
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2016-10-01
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[PDF-8.37 MB]
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Abstract:Current design of reinforced soil structures in the U.S. distinguishes between slopes and walls using the batter angle as a criterion. Using a unified approach in limit state design of reinforced ‘walls’ and ‘slopes’ should diminish confusion while enabling a wide and consistent usage in solving geotechnical problems such as complex geometries and soil profiles. Limit equilibrium (LE) analysis has been used successfully in the design of complex and critical structures (e.g., tall dams) for many decades. Limit state analysis, including LE, assumes that the design strength of the soil is mobilized. Presented is a LE framework, limited to extensible reinforcement, which enables the designer to find the tensile force distribution in each layer required at a limit state. This approach is restricted to Allowable Stress Design (ASD). Three example problems are presented.
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