Dear all,

I am modelling a historical quay wall which includes a concrete wall on a timber foundation. Modelling sliding of this wall gives me problems: the computation tends to stop on a 'soil body collapse' error. The same issue is found on elements on a later renovation (concrete - concrete or concrete- steel).

The INPUT:

• Conrecete wall (soil, mohr-coulomb)
• Timber floor (plate, elastic)
• Steel sheet pile wall (plate, elastic)
• Interfaces (customised with preferred phi,c and psi, Mohr-coulomb). I attached screenshots of the used interface characteristics.
• Updated Mesh Plastic calculations

With a seperate model, I have found out that setting the R,inter,residual on a slightly lower value (e.g. 0.99) makes modelling sliding possible before Plaxis stops due to 'soil body collapse'.

In the OUTPUT programme one can find numerous inaccurate tension cut-off points, suggesting sliding is occuring, but modelling this any further is sadly not possible.

Would anyone know how to overcome this problem, and actually modelling a wall sliding of a timber floor?

Greetings,

Mark Schilder