Hi colleagues,
Because of the complexity of modelling geogrid layers and their interfaces which can cause convergence problem in FE analyses, I have seen in practice they model the whole MSE wall system (eg a block 6m long and 5m high) with very dense or elastic material.
I couldn't pinpoint this in the literature or in guidelines and standards.
Do you know any reference that suggests this?
Dear Arman,
Certain modelling assumptions can be made in modelling the MSE walls. Attached are open access thesis on the matter;
Earthquake Response of Different Types of Retaining Walls, "Thapa Magar, Anuj" https://ntnuopen.ntnu.no/ntnu-xmlui/handle/11250/2416462
I hope this helps.
Thank you Ahmed Hussein Olat !
That's an interesting piece of work.
However, what I am interested in particular is the MSE walls.
There are complications in the response of the geogrid interface to the soil and the block in dynamic analyses.
Because of that, I haven't seen research that investigates the dynamic response of an MSE wall.
In industry, I've seen people modelling the whole MSE block (without modelling geogrid and interfaces) using an overly stiff material that at the end would act as an elastic block because of how stiff it is.
I was just wondering if there is anything in guidelines or research that address or recommend this approach.
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