GGU-DOLPHIN: "Analysis options" menu item

Using this menu item, you can edit the default preferences of the current system. The dialog box that then opens corresponds to the box that you see when you create a new system via the "File/New" menu item.

Open

You can enter a dataset description ("Project identification") of the problem going to process, which will then be used in the General legend.

The analysis can be carried out using either the Blum method or the p-y method. Using the p-y method, you also select the type of load (static or cyclic). If the "Passive earth pressure compliant with GEO-3" check box is deactivated, the p-y curves are compressed using the partial safety factor for the passive earth pressure. Internationally, a GEO-3 analysis is generally performed. The shear parameters are reduced using partial safety factors and the system is analysed with the resulting 'softer' p-y curves.

If you select the "Use absolute heights" check box, you can enter all depths or heights in m AD (heights are positive upwards). If you leave this box unselected, the dolphin head is assumed at 0.0 (height/depth) and all input of layer depths etc. is positive downwards. Thanks to WYSIWYG there is no danger of using incorrect data since all input is immediately visible on the screen.

Next, you can activate visualisation of the passive side at the right. If the "Label passive and active sides in graphics" check box is activated, both sides are labelled at the bottom of the system.

In the "Steel design:" group box, you can choose whether a section from the section list loaded by the program should be selected to design a dolphin pile, or whether you wish to design a dolphin pile with differing sections in different depth ranges. If you work with the section list, you can automatically search for the optimal section for some load cases. You can read more detailed information by clicking the "?" buttons. A uniform dolphin width is required to calculate the three-dimensional earth pressure. If differing sections are selected, use the pull-down menu on the right to specify which value should be used for the dolphin width.

If you do not want to perform the analysis using the specified yield strength fy,k, but with your own data instead, activate the corresponding check box in the lower group box for steel design.

The "Recalculate image coordinates after each analysis" check box should always be activated to allow the result visualisation in the graphics to always be optimally displayed following design for different load situations.