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3D_Slope_in_Clay

This example models the problem stated in "A three-dimensional slope stability problem in clay" by Vincenzo Silvestri.

The analysis method used in this study is:
Bishop.

The search method for the critical slip surface is "Fully Specified - Ellipsoid" which allows the specification of an elliptical slip surface. The fully specified method implies that the analyzed slip surface is fully defined. Fully Specified method allows the user to specify the center-point as well as the tangent plane and aspect ratio of the ellipsoid to define the ellipse.

Model filename: Slopes_3D > 3D_Slope_in_Clay.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Benchmarking,Slopes_3D

Attachments:

Arbitrary_Sliding_Direction

This example is used to illustrate the analysis of a three-dimensional slope stability model using the Multi-Directional Slip Analysis feature of SVSLOPE, i.e., a slip surface direction that does not follow the x-axis. A range of slip surface directions is analyzed and the effect on the factor of safety for the slope is noted.

This example consists of a simple one layer slope. The model is analyzed using the Bishop Simplified method and the GLE method. The purpose of this example is to analyze the stability of a simple slope along several different slip surface directions and present the resultant factors of safety.

The model is developed from: Jiang, Can. Geotech. J. 40: 308-325 (2003). Jiang results were a FOS = 1.33 using the Dynamic Programming search method and the Janbu analysis method.

Model filename: Slopes_3D > Arbitrary_Sliding_Direction.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Multi-Directional Slip Analysis

Attachments:

bedrock

The analysis methods used in this example are:
Ordinary,
Bishop,
Janbu Simplified,
Corps#1,
Corps#2,
Lowe-Karafiath,
Spencer,
M-P (Intercolumn Force Function - Half-sine),
GLE (Intercolumn Force Function - Half-sine), and
Sarma (Intercolumn Force Function - Half-sine).

The search method for the critical slip surface is "Fully Specified - Ellipsoid" which allows the specification of an elliptical slip surface. The fully specified method implies that the analyzed slip surface is fully defined. Fully Specified method allows the user to specify the center-point as well as the tangent plane and aspect ratio of the ellipsoid to define the ellipse.

Model filename: Slopes_3D > bedrock.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,bedrock,Benchmarking,Slopes_1/2/3/SAFE,Slopes_3D

Attachments:

closedForm

This example models the problem stated in "A three-dimensional slope stability problem in clay" by Vincenzo Silvestri.

The analysis method used in this example is:
Bishop.

The search method for the critical slip surface is "Fully Specified - Ellipsoid" which allows the specification of an elliptical slip surface. The fully specified method implies that the analyzed slip surface is fully defined. Fully Specified method allows the user to specify the center-point as well as the tangent plane and aspect ratio of the ellipsoid to define the ellipse.

Model filename: Slopes_3D > closedForm.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Infrastructure,Slopes_1/2/3/SAFE,Slopes_3D

Attachments:

Composite_Ellipsoid_Wedge

CLARA_W example 2 - Composite ellipsoid / Wedge Surface. Use discontinuity material for the wedge.

Model filename: Slopes_3D > Composite_Ellipsoid_Wedge.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Water Table,Infrastructure,Slopes_1/2/3/SAFE,Benchmarking,Slopes_3D

Attachments:

earthquake_load

The analysis methods used in this study are:
Ordinary,
Bishop,
Janbu Simplified,
Corps#1,
Corps#2,
Lowe-Karafiath,
Spencer,
M-P (Intercolumn Force Function - Half-sine),
GLE (Intercolumn Force Function - Half-sine), and
Sarma (Intercolumn Force Function - Half-sine).

The search method for the critical slip surface is "Fully Specified - Ellipsoid" which allows the specification of an elliptical slip surface. The fully specified method implies that the analyzed slip surface is fully defined. Fully Specified method allows the user to specify the center-point as well as the tangent plane and aspect ratio of the ellipsoid to define the ellipse.

Model filename: Slopes_3D > earthquake_load.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Water Table,Transportation,Seismic/Earthquake,Benchmarking,Slopes_3D

Attachments:

Ellipsoidal_Toe_Submergence

This example illustrates a single trial slip surface.

The analysis methods used in this study are:
Ordinary,
Bishop,
Janbu Simplified,
Corps#1,
Corps#2,
Lowe-Karafiath,
Spencer,
M-P (Intercolumn Force Function - Half-sine),
GLE (Intercolumn Force Function - Half-sine), and
Sarma (Intercolumn Force Function - Half-sine).

The search method for the critical slip surface is "Fully Specified - Ellipsoid" which allows the specification of an elliptical slip surface. The fully specified method implies that the analyzed slip surface is fully defined. Fully Specified method allows the user to specify the center-point as well as the tangent plane and aspect ratio of the ellipsoid to define the ellipse.

Model filename: Slopes_3D > Ellipsoidal_Toe_Submergence.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Water Table,toe submergence,Benchmarking,Slopes_3D

Attachments:

Embankment_Corner

The analysis methods used in this study are:
Ordinary,
Bishop,
Janbu Simplified,
Corps#1,
Corps#2,
Lowe-Karafiath,
Spencer,
M-P (Intercolumn Force Function - Half-sine),
GLE (Intercolumn Force Function - Half-sine), and
Sarma (Intercolumn Force Function - Half-sine).


The search method for the critical slip surface is " Grid and Tangent". The grid and tangent methodology is one of the most common methods of determining the critical circular slip surface. In this methodology, the trial slip surfaces are specified by a grid of centers and a set of lines to which the circular slip surface must be tangent.

Model filename: Slopes_3D > Embankment_Corner.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Grid and Tangent,Benchmarking,Slopes_1/2/3/SAFE,Slopes_3D

Attachments:

FredlundAndKrahn_1977_3D

In this example, the slope is comprised of three layers. It represents a comparison study of various slope stability methods strictly based on the example on "Comparison of Slope Stability methods of analysis" by Fredlund and Krahn. The 3D model is created based on the 2D model.

The analysis methods used are:
Ordinary,
Bishop,
Janbu Simplified,
Corps#1,
Corps#2,
Lowe-Karafiath,
Spencer,
M-P (Intercolumn Force Function - Half-sine),
GLE (Intercolumn Force Function - Half-sine), and
Sarma (Intercolumn Force Function - Half-sine).

The search method for the critical slip surface is "Fully Specified - Ellipsoid" which allows the specification of an elliptical slip surface. The fully specified method implies that the analyzed slip surface is fully defined. Fully Specified method allows the user to specify the center-point as well as the tangent plane and aspect ratio of the ellipsoid to define the ellipse.



Model filename: Slopes_3D > FredlundAndKrahn_1977_3D.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Water Table,Benchmarking,Slopes_1/2/3/SAFE,Slopes_3D

Attachments:

General_sliding_surface

This example demonstrates the use of general sliding surface. In the original CLARA/W, the model used a Hoek-Brown strength model for the shale bedrock layer material. since there is a different implementation of the Hoek-Brown model in CLARA/W and SVSLOPE, the bedrock material strength model is changed to a Mohr-Coulomb in both the CLARA/W and SVSLOPE 3D software packages for the convenience of comparison.

The analysis methods used in this study are:
Ordinary,
Bishop,
Janbu Simplified,
Corps#1,
Corps#2,
Lowe-Kar,afiath,
Spencer,
M-P (Intercolumn Force Function - Half-sine),
GLE (Intercolumn Force Function - Half-sine), and
Sarma (Intercolumn Force Function - Half-sine).

The search method for the critical slip surface is "Fully Specified - General Surface". The general surface allows the user to specify an arbitrary slip surface through a grid.

Model filename: Slopes_3D > General_sliding_surface.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Water Table,General Slip Surface,Infrastructure,Slopes_1/2/3/SAFE,Benchmarking,Slopes_3D

Attachments:

Grid_Tangent_Toe_Submergence

This problem models the upstream portion of an earth dam which was built with a sloping clay core surrounded by granular material. The water surface is higher than the ground surface in the front of the toe, so toe submergence will be considered. This model was originally presented in the Clara/W verification manual. It should be noted that the unit weights in this example are close to buoyant values but are reproduced in the current example for the sake of consistency with the original model as presented in the Clara/W documentation.

The analysis methods used in this example are:
Bishop, and
Janbu Simplified.

The search method for the critical slip surface is " Grid and Tangent". The grid and tangent methodology is one of the most common methods of determining the critical circular slip surface. In this methodology, the trial slip surfaces are specified by a grid of centers and a set of lines to which the circular slip surface must be tangent.

Model filename: Slopes_3D > Grid_Tangent_Toe_Submergence.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Water Table,Infrastructure,Slopes_1/2/3/SAFE,Benchmarking,Slopes_3D

Attachments:

Hungr_Leshchinski_3D

This model is based on Hungr (1989), which is again based on Leshchinski (1985).

The analysis methods used in this problem are:
Bishop,
Janbu Simplified, and
Spencer.

The search method for the critical slip surface is "Fully Specified - Ellipsoid" which allows the specification of an elliptical slip surface. The fully specified method implies that the analyzed slip surface is fully defined. Fully Specified method allows the user to specify the center-point as well as the tangent plane and aspect ratio of the ellipsoid to define the ellipse.

Model filename: Slopes_3D > Hungr_Leshchinski_3D.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Benchmarking,Slopes_3D,Earth structures

Attachments:

Kettleman_Hills_Landfill

This model uses a 3D wedge sliding surface on Kettleman Hills Landfill. The Wedge is defined by discontinuity material.

The analysis methods used for this problem are:
Ordinary,
Bishop,
Janbu Simplified,
Corps#1,
Corps#2,
Lowe-Karafiath,
Spencer,
M-P (Intercolumn Force Function - Half-sine),
GLE (Intercolumn Force Function - Half-sine), and
Sarma (Intercolumn Force Function - Half-sine).


The search method for the critical slip surface is "Fully Specified - Wedge".
The wedges option allows a critical slip surface to be specified as a series of one or more interlocking planes. This specified slip surface is often used to specify a block type of failure mechanism. Each surface comprising a wedge is formed based on a single locating point and dips two directions. It is also possible with the interface to specify a discontinuous material which applies exactly along the wedge slip surface.

Model filename: Slopes_3D > Kettleman_Hills_Landfill.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,discontinuity,wedge,Benchmarking,Earth structures,Slopes_3D

Attachments:

MultiDirSlip_Cheng2007_Fig10

This model comes from Fig. 10 in the paper entitled "Three-Dimensional Asymmetrical Slope Stabiiity Analysis Extension of Bishop's, Janbu's, and Morgenstern-Price's Techniques" by Y.M.Cheng and C.J. Yip. Journal of geotechnical and geoenvironmental engineering, 133(12), 2007. Cheng, etc. got a FOS = 0.722 with the Simpified Janbu's Method.

Model filename: Slopes_3D > MultiDirSlip_Cheng2007_Fig10.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Multi-Directional Slip Analysis

Attachments:

MultiDirSlip_Cheng2007_Fig11

This model is developed from Fig. 11 in the paper entitled "Three-Dimensional Asymmetrical Slope Stabiiity Analysis Extension of Bishop's, Janbu's, and Morgenstern-Price's Techniques" by Y.M.Cheng and C.J. Yip. Journal of geotechnical and geoenvironmental engineering, 133(12), 2007. Cheng, etc. got a FOS = 0.280 with Simpified Janbu's and Morgenstern Method, and the sliding direction at 63.4 degrees CW from axis X.

Model filename: Slopes_3D > MultiDirSlip_Cheng2007_Fig11.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Multi-Directional Slip Analysis

Attachments:

MultiDirSlip_Huang2000_Fig7a

This model comes from Fig. 7(a) in the paper entitled "New Method for 3D and Asymmetrical Slope stability Analysis" by C.C.Huang and C.C. Tsai. Journal of geotechnical and geoenvironmental engineering, 126(10), 2000. Huang, etc. found a FOS = 1.766 with the Simpified Bishop Method.

Model filename: Slopes_3D > MultiDirSlip_Huang2000_Fig7a.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Multi-Directional Slip Analysis

Attachments:

MultiDirSlip_Huang2000_Fig8a

This model comes from Fig. 8(a) in the paper entitled "New Method for 3D and Asymmetrical Slope stability Analysis" by C.C.Huang and C.C. Tsai. Journal of geotechnical and geoenvironmental engineering, 126(10), 2000. Huang, etc. got a FOS = 1.235 with the Simpified Bishop Method.

Model filename: Slopes_3D > MultiDirSlip_Huang2000_Fig8a.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Multi-Directional Slip Analysis

Attachments:

multi_piezo_surfaces

This model presents multiple piezometric surfaces, each layer associated with a different piezometric surface.

The analysis methods used for this problem are:
Ordinary,
Bishop,
Janbu Simplified,
Corps#1,
Corps#2,
Lowe-Karafiath,
Spencer,
M-P (Intercolumn Force Function - Half-sine),
GLE (Intercolumn Force Function - Half-sine), and
Sarma (Intercolumn Force Function - Half-sine).

The search method for the critical slip surface is "Fully Specified - Ellipsoid" which allows the specification of an elliptical slip surface. The fully specified method implies that the analyzed slip surface is fully defined. Fully Specified method allows the user to specify the center-point as well as the tangent plane and aspect ratio of the ellipsoid to define the ellipse.

Model filename: Slopes_3D > multi_piezo_surfaces.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Water Table,Benchmarking,Slopes_1/2/3/SAFE,Earth structures,Slopes_3D

Attachments:

multi_planar_moving_wedges

This model uses the multi-planar moving wedge sliding surface. It represents a waste pile failure controlled by a weak interface between the waste material and its foundation. The weak surface is defined by discontinuity material. All other three wedge planes forming the sliding surface have the properties of the waste material.

The analysis method used for this problem is:
Bishop.

The search method for the critical slip surface is "Moving Wedges". The wedges option allows a critical slip surface to be specified as a series of one or more interlocking planes. Each surface comprising a wedge is formed based on a single locating point and dips two directions. This type of analysis can be utilized to represent failure of a rock wedge. In real world situations it may happen that there are fracture patterns in the rock.

Model filename: Slopes_3D > multi_planar_moving_wedges.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Water Table,moving wedges,Infrastructure,Slopes_1/2/3/SAFE,Slopes_3D,Earth structures

Attachments:

multi_planar_wedges

This model uses the multi-planar wedge planar sliding surface. It represents a waste pile failure controlled by a weak interface between the waste material and its foundation. The weak surface is defined by discontinuity material. All other three wedge planes forming the sliding surface have the properties of the waste material.

The analysis methods used for this problem are:
Ordinary,
Bishop,
Janbu Simplified,
Corps#1,
Corps#2,
Lowe-Karafiath,
Spencer,
M-P (Intercolumn Force Function - Constant),
GLE (Intercolumn Force Function - Constant), and
Sarma (Intercolumn Force Function - Constant).



The search method for the critical slip surface is "Fully Specified - Wedge".
The wedges option allows a critical slip surface to be specified as a series of one or more interlocking planes. This specified slip surface is often used to specify a block type of failure mechanism. Each surface comprising a wedge is formed based on a single locating point and dips two directions. It is also possible with the interface to specify a discontinuous material which applies exactly along the wedge slip surface.

Model filename: Slopes_3D > multi_planar_wedges.svm

Tags: Slopes_3D,SVSLOPE,3D,Steady-State,Water Table,wedge,Infrastructure,Slopes_1/2/3/SAFE,Benchmarking,3D wedges,Pore-Pressure Ratio - Ru,discontinuity,Slopes_3D,Earth structures

Attachments:

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