GGU-CONSOLIDATE: "Soils" menu item
This menu item is only available for the numerical methods. The soil properties are entered in "Edit/System parameters" when employing analytical methods.
First, define the number of soils in your system using the "x soil(s) to edit" button. Using the "Sort" button, you can sort the soils according to depth; otherwise, sorting is carried out automatically upon leaving the dialog box. To delete soil layers simply assign the soil a large depth value (e.g. 99.0) and then press the "Sort" button. The corresponding soil is now at the end of the table and can be deleted by reducing the number of soils accordingly.
If you activated neither "With consolidation coefficient Cv" nor "With compression index Cc" in the "Edit/System parameters" menu item, you will see the following dialog box.
Using the "Common soils" button, you can easily select the soil properties of many common soils from a database or determine intermediate values.
In the dialog box, which you open by pressing the "Common soils" button, open the "Soils_english.gng_ggu" file when first starting the program in English ("Edit table"/"Load" buttons). Then save the data set in the "Soils.gng_ggu" file on the program level to open your modified database file when the program starts. You can also enter your own data ("Edit table"/"x soils to edit" button) and save it in the "Soils.gng_ggu" file. You can also use your adapted file in other GGU programs by means of the "Common soils" function if you copy the file into the appropriate GGU program folder.
All project data can be entered and managed in the GGU-CONNECT program. If you have already stored your drilling data as a soil strata model in your project, you can load the soil strata and properties as an xml file using the "GGU-CONNECT" button in the above dialog box. A brief overview of the procedure in GGU-CONNECT for exporting the data to the GGU analysis programs can be found here:
GGU-CONNECT - Export contents for GGU analysis programs
The layer depths (base) are with reference to the top of the uppermost consolidation layer, as are all other inputs. Furthermore:
ES = constrained modulus of soil [kN/m²]
k = permeability of soil [m/s].
You can alter the units for the constrained modulus to "MN/m²" in "Edit/Type of consolidation".
In order to allow modelling of the temporal development of settlement, the consolidation coefficient CV is required. This can be calculated from the constrained modulus ES and the permeability coefficient k:
CV = ES · k / gamma(water)
Using the "Calculate" buttons it is possible to determine the constrained modulus or the value of k for a given value of CV and to adopt this as the new parameter.
If you activated "With consolidation coefficient Cv" in the "Edit/System parameters" menu item, enter the value of k and the consolidation coefficient into the slightly different dialog box.
If you activated "With compression index Cc" in the "Edit/System parameters" menu item, the soils dialog box is expanded by the corresponding parameters. Depending on whether you are also working with the consolidation coefficient CV, you will see the corresponding input boxes for CV or constrained modulus and k (see the following example).
