SOLIDPILE,<group>,[stiff],[soft],[stiff2]

This command separates piles from the rest of model, then reconnects piles to the model by adding springs along the pile interface. The command begins by duplicating the nodes along the groups interface and reconnects the element to the duplicate node. Then springs are added between the original node and the duplicate connected to the pile. 4 spring groups will be added for each time this command is issued. The first three spring groups connect sidewalls to the rest of the model with 1d stiffness in each direction. The fourth group connects the bottom of the piles with springs that have stiffness in the Z direction. All springs created have a 4% damping. Pile group for this command must be made of solid elements.

• group - pile group number
• stiff - XY stiffness of sidewall springs (default = 10⁷)
• soft - Z stiffness of sidewall springs (default = 10)
• stiff2 - Z stiffness of bottom springs (default 10⁷)