Mr.pordel,

You can model concrete pile group in Abaqus, use 8 or 20 noded solid continuum element to simulate pile group. Place the pile group at the centre of the mesh identifying the location at which need to place all the piles in a group and pile cap also to be simulated using continuum element. i recommend you to collect the literature related to your work as lot of literature available based on Abaqus work, so study those paper and start simulating your problem..it is easy to simulate ..try your best..

I have a link foe you

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.736.5988&rep=rep1&type=pdf

Regards,

Amin

Professor Karthigeyan.S . Thank you for your Answer.

interest