SLOPE/W
Category Slope stability (soil)
Publisher  GEO-SLOPE International Ltd. 
Platform Win2000, WinXP, Vista
Status Commercial
Description SLOPE/W is a circular and non-circular soil and rock slope stability program. Carries out stability analyses by the methods of Fellenius, Bishop simplified, Janbu simplified, Spencer, Morgenstern-Price, Corps of Engineers, Lowe-Karafiath, General Limit Equilibrium, Finite element stress. Models can include: multiple soil types, partial submergence, variable thickness and discontinuous soil strata, impenetrable soil layers, dry and water filled tension cracks. Slip surfaces may be defined by: rotation centre and radius, data points, circular shape, composite shape, fully specified by multiple straight line segments, block specified, optional crest and toe projections at active or passive earth pressure angles, vertical tension crack when slip surface exceeds specified angle. Pore water may be modelled by: an Ru value for each stratum, a piezometric line for each soil type, contours of pore water pressure, finite element modelled pore water pressures or a grid of head, pressure or Ru. Soil properties include: total or effective stress, bilinear strength envelopes, unsaturated soil, undrained strength as a function of depth, anisotropic strength, user defined failure envelope. Applied loads modelled as: surface pressure, surcharge concentrated loads, anchor or soil nails, geo-fabric reinforcement, seismic and earthquake loads. Graphical user interface for construction of slope geometry and for display of results. The analysis output can show: each potential slip surface and its FOS, potential sliding mass, slices used in the analysis, free body diagram and force polygon, parameter plots along the slip surface. Can perform probabilistic stability analyses using the Monte Carlo method. SLOPE/W can also be used in conjunction with SIGMA/W to determine the stability factor based on finite element computed stresses. New features in 2007 version: Multiple analyses of similar or different types can be done in a single project file. Different solutions can be compared in the same file. Staged analyses can be done for construction sequencing with moving boundary conditions. Define boundary conditions and material properties by geometry region, rather than on the finite element mesh. Unstructured quadrilateral mesh with fine-tuning options. Interface elements can be added on lines to model soil-structure interactions, liners and geo-fabrics, cutoff walls and wick drains. Define a results graph on a geometry object (line, point, or region) or on a cut line or plane. Plot multiple results graphs together to compare data. Make a movie of analysis results to show how results change over time. Custom user add-in functions to define material property or boundary condition functions using internal solver data or external data held in Excel or any other .NET program. Examples with a detailed discussion on how to use and apply the relevant features and how to interpret the results. Fault-tolerant licensing on a wide area network. Input and results summary reporting into a formatted Word or HTML document. Total stress staged rapid drawdown procedure. Specify a maximum suction value above a water table and the shear strength arising from the suction can be related to a Volumetric Water Content function. A free evaluation version is available.
Cost US Dollars 4,495, free evaluation version
Data formats supported None stated
Supplier in Canada  GEO-SLOPE International Ltd. 

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