The way Structure interacts with the Soil is called Soil Structure Interaction. All Structures include safe and sound transfer of load from the structure to the ground. The amount of load transferred through each foundation depends on the location of the foundation in the structure, Flexibility of Foundation and the behavior of the soil in which the support is.
This post contains the following information:
-Soil Structure Interaction in Integral Bridges
-Modeling Scheme for Integral Bridges In Midas Civil
-Definition of Soil Spring Supports
-Post-processing
-Video:
https://www.youtube.com/watch?v=Lly3M_iLXmk