Plate for load transfer in consolidation analysis

I am working on consolidation analysis of soft clay improved by columns. I wanted to transfer the load uniformly to the soil and column. Hence I am trying to create a plate. I have tried the following methods.

  1. Creation of shell element and linking it with soil/column zones.
  2. Creation of a zone and giving the properties of the plate.

Either way I am getting a negative pore pressure which is not possible ideally.

Can someone help me that what can be done to create a plate for a uniform load transfer and to observe the uniform displacement of the soil/column in consolidation analysis .

Thanks in advance.