How do you model soil and soil/structure interaction with s/w ?
How do you model soil and soil/structure interaction with s/w ?
(OP)
hi all,
How is the correct way of modelling soil behaviour and soil structure interaction under external static, seismic, impulse or completely arbitrary loading with nowadays computer.
Regards,
How is the correct way of modelling soil behaviour and soil structure interaction under external static, seismic, impulse or completely arbitrary loading with nowadays computer.
Regards,






RE: How do you model soil and soil/structure interaction with s/w ?
RE: How do you model soil and soil/structure interaction with s/w ?
please explain!
RE: How do you model soil and soil/structure interaction with s/w ?
I agree that soil structure interaction is not common task, I'm even bit a dubious that it'll produce practically reliable results.
My main point of interest was actually how the soil can be modelled when designing retaining walls, machine foundations etc... what type of loading the soil will produce or what will be real behaviour of soil under cycle loading for heavy machine foundation?
I'm looking for how the softwares can be used for accurately estimate the soil behaviour, instead of doing the hand calculation,e.g. location of critical circle for slope stability, how the softwares(with tetras, hexas) can be benefited?
Thanks for commenting,
RE: How do you model soil and soil/structure interaction with s/w ?
The computer software often only take soil properties in vertical direction, specially the stress and settlement software. For slopes, you can define more accurately what the field conditions.
The main point is to have an idea or a back of the envelope calculation estimate before you model the program- this only comes with experience. Sometimes, I see others solving for non-existing problems. This is unwarranted exercise even if you have powerful software. For example, earlier this week, I saw a report that mentioned undocumented fill was present next to a structure that will soon get an addition. The addition area is attached to the existing building. How can this be, when the soils under the building is same as that next to it. There are no distress signs on the existing structure so the adjacent area must have been compacted at the same time as the original structure. This is confirmed by the medium dense consistency of the adjacent soils.
There are many such examples in tiebacks, laterally loaded foundations and machine foundations. It is better that we learn from case studies and current publications so that we may better define the most critical design concerns. Once we setup the problem, solving it by a calculator or a spreadsheet is often sufficient. As my statics teacher used to stay, set up the equations and solving it is just Algebra.
RE: How do you model soil and soil/structure interaction with s/w ?
Basically we should rely on what we gained from our exprience and do hand calculation as how we have been taught on college. But didn't we sustain our experience with some numerical results, which I believe why we have been paid for.
Does that mean also, having the powerful methods such as finite element doesn't do any good for estimating the load produced by soil?
Regards,
RE: How do you model soil and soil/structure interaction with s/w ?