How to model debonding of Piles?

Hello,

This is a very basic question pertaining to Debonding of Piles.

Type of Pile: RC Bored Pile

Size of Pile: 300mm Circular

Total Embedment Length: 42m

Total debonded length: First 30m

Rest of the length 12m is not debonded.

What is the realistic way to model such a Pile in Plaxis 2D if the Piles are modelled as Embedded beam rows and how can the Rinter value be modelled in Plaxis 2D?

Thank you in advance.