Chapter 4 Stability analysis

Publisher Summary This chapter discusses the stability analysis. For embankments and dikes on organic soils, an evaluation of the stability during construction is of major importance. Stability analyses may also have to be carried out for other particular loading situations, such as: (a) steady seepage conditions, (b) sudden drawdown of the water level, and (c) application of additional load. In estimation of stability of embankments on organic soils, two particular cases may be identified: single-stage loading—when the initial shear strength of the soil is sufficient to support safely the maximum embankment load—and multi-stage loading—which requires evaluation of the shear strength increase with load and time for the design of a safe loading rate. In evaluation of the stability of embankments on organic soils, more attention should be paid to the appropriate selection of initial values of soil parameters and their changes due to consolidation than to the application of more complex methods of stability calculation.

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