Seismosoft | Earthquake Engineering Solutions

Hello.

I would like to create a rectangular concrete-filled steel tube (CFST) structure in the software. This requires defining a hollow concrete section. How should this be implemented in the software?

Also, is it necessary to define contact interaction between the steel shell and the concrete, similar to what is done in Abaqus?

In SeismoStruct, you can use the crs composite section.
Regarding the interaction between steel and concrete, the program assumes that the two parts are fully connected.
Seismosoft Support