Verification of Program civilengapps-SST

Verification of Program civilengapps-SST Based on Example from DIN 4084 Bbl 1:2023-02

The following video shows how to use civilengapps-SST program for analysis of slope stability problems. You can also find additional information from the text below the video

Image: Soil properties

Image: Ground water level

Expected critical circle and utilization factor according to DIN 4084 Bbl 1:2023-02

1. Center (9.99 , 26.74)
2. Radius 28.55 m
3. Utilization factor, m= 0.900

Modelling in civilengapps-SST

• Work from top to down

• We set the design code and design situation as Eurocode and permanent design situation

• update parameters of automatically generated soil property to have the properties of the top layer

• Add additional soil property for the bottom layer and edit values

• Edit ground surface points, first update existing points, afterwards you can add multiple points

• Update (check) the soil properties of the top layer

• Create the bottom layer and set the soil property accordingly, Layer will be created automatically at a distance of approx. 5 m.

• Edit the points of the new layer. First update existing points then add new points.

• Create ground water table at z=0

• Afterwards edit points to match the specified water table

• If any actions (surcharge loads and traffic loads) you can add them with the action menu

• Define slip circles

• We match our choices to the expected slip surface

• Center (9.99 , -26.74) (we set left top corner at 2 meters distance to 7.99, -30.74, mind that z coordinate is positive downwards), we set the grid interval to be 2 m

• Radius 28.55 m (we set Rmin to be 26.55 and Rmax to be 30.55, in between we define 4 slip circles so that we can check additional slip circles with radius of 27.55, 28.55 and 29.55)

• We match our choices to the expected slip surface

• We set the lamella width (lw) to be 3.54 m same as in the DIN Standard (in order to get more accurate results you can reduce the width up to 0.5 m)

• We reduce the grid width to 10 m (Gx and Gz) in order to limit the number of slip circles

• Refresh the page after a few seconds and you will see the slip circles

• Then we analyze the slip circles

• Since calculations are done in the background you need to wait for at least a few seconds to a minute (depending on the number of slip circles) to get the results

• Now we refresh the page

Comparison of the results

Circle	results civilengapps_SST	Results from DIN 4084 Bbl 1:2023_02
Center (9.99, 26.74) Radius 28.55 m	Utilization factor m =0.93	Utilization factor m =0.90
Most critical slip circle Center (9.99, 22.74)Radius 26.55 m	Utilization factor m=0.93	-

You can view and manage your civilengapps-SST files under

 -   Your Area -> manage your data

• Thank you for watching : Work with us civilengapps Team

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             - More files_
             - More than 2 soil types
             - More than 2 soil layers
             - More than 1 action