## Retaining wallsPROBLEM The drop in energy from the upstream to the downstream side of an earth dam can be too abrupt and can lead to failures. It is also possible that a dam may be built on material which is too permeable. SOLUTION Seepage analysis of cutoff walls is useful in order to determine if high gradients develop at the base of the cutoff wall or on the downstream exit point. The automatic mesh refinement in SVFlux is excellent for addressing this type of problem. True exit gradients are often mis-calculated when a fixed-mesh applications are used to analyze this type of problem. Automatic mesh refinement causes additional nodes to be placed in critical zones in order to increase solution accuracy. Understanding the flow regime of earth dam structures is critical to their correct long-term performance. If internal/exit gradients become high it can lead to a piping failure. If there is rapid draindown it can lead to an internal build-up of pore-water pressures which may result in a slope-stability failure. Both of these scenarios may be analyzed with the SVFlux software. Please note that most of these models can be downloaded through our SVOffice product suite.
This mpdel provides verification against the model presented in the paper, "PREDICTION OF RAINFALL-INDUCED FILL SLOPE FAILURES" by Jason Y. Wu.
This model is presented to test the horizontal support loads. The Bishop and Janbu analysis methods should provide the same solutions as the horizontal Point Load, other methods should be similar as well.
The analysis methods used for this problem are:
This particular model looks at the stability of a geosynthetic-reinforced embankment on soft soil.
This particular model looks at the stability of a geosynthetic-reinforced embankment on soft soil.
A back analysis is used to determine the amount of reinforcement required to stabilize a slope.
This problem examines the stability of the embankment when it consists of sand or an undrained clay fill. The objective of this example is to compute the required reinforcement force to yield a factor of safety of 1.35. In each case presented, the embankment was first modeled without reinforcement and the critical slip surfaces determined.
This particular analysis involves a planar failure through a soil nailed wall.The factor of safety is calculated for the undrained, homogeneous slope. In this case, the slope is reinforced by two rows of nails.
The purpose of this analysis is to determine the factor of safety for six different plane angles ranging from 45 to 70 degrees.
The purpose of this model is to confirm the ability of SVSLOPE to analyze reinforced slopes using eight different techniques.
This model is similar to the example model VS_55 with the exception that a dry tension crack is included.
This scenario varies the effect of the reinforcement.The analysis represents a tie back wall and homogeneous sand. A single row of active grouted tie back support is installed for this problem. A water table is present, circular critical slip surfaces are considered and the resulting factor of safety is required.
The primary purpose of this model is to illustrate the analysis of the stability of a gravity retaining wall using a fully specifed slip surface.
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