Does anyone know of a simple (e.g. elastic) method to calculate the lateral deformation beneath an embankment which is caused by the (vertical) embankment load? A really simple approach might just be to relate vertical settlement to radial movement using Poisson's ratio, but this seems far too simple. Numerical modelling is out of the question. I had a look at the Poulos and Davis (1974) book, though I could only find a calculation for radial deformation beneath a circular footing, and this had a couple of additional factors to apply in the calculation which seem specific to that problem.
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