Geotechnical feedback
Please leave feedback and development suggestions for the Oasys Geo programs or vote on existing items – thanks for your input!
Note that the Knowledge Base includes summarized development plans.
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Ability to input both compression and tension loads in the same file
It is currently not possible to apply both tensile and compressive loads in the same file to compare against the calculated resistances. The programme subtracts the tensile loads which are applied as negative loads from the compressive loads which are positive instead of recognising them as separate loads.
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Multiprocessing and result plotting improvements
Add parallel processing capability to SIREN so that two, four or eight time histories can be run in parallel (depending on processor capabilities) rather than sequentially. (NB: This capability is currently a feature of Deepsoil).
Consider adding more than one soil profile for analysis to an input file, as we typically run three versions of a soil profile to consider uncertainty in the input stiffness profile (upper, lower bounds and best estimate). The same time histories are run through each profile.
With typically three stiffness profiles considered per soil profile, and 7-pairs of records (14 No.) per profile, and often…
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Pile to be able to handle c-phi soils
Pile currently treats soils in two broad catergories: drained and undrained, the drained soils have only an angle of friction and the undrained only the undrained cohesion. It would be nice if c-phi soils (e.g sandy clays, clayey sands) can also be considered.
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1 vote
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Link Between Slope and Frew programs
Able to open Frew data file in Slope for slope stability analysis
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Minimum equivalent fluid pressure
A new update allows you to edit the MEFP at each stage and in each material. However, it defaults to y0=0 at each stage and therefore is not applied unless you go through each stage and change this. Please can the MEFP default to the top node level unless specified otherwise?
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Graphical output shall show all wall dimensions on screen
Hi , currently graphical output is not showing wall dimensions, its good if it shows all dimensions and can be exportable to auto cad program
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Limit on tension in props
Please can you allow a limit to be set to prevent props going into tension? Currently a multi-propped wall with no embedment doesn't fail as the top prop goes into tension.
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Extend Pile to model embedded retaining walls as a rectangular panel
Where embedded pile retaining walls carry axial loads, it is common practice to analyse the section as a rectangular panel rather than individual circular piles (with a reduced end bearing co-efficient akin to a deep strip footing).
To date, we have achieved this by modelling an under-ream pile with different shaft and base diameters. However, it would be simpler and clearer if Pile could analyse a rectangular section. This would also be beneficial for calculation of axial resistance for diaphragm wall panels.
Refer to method of Hov et al from 2010 DFI Conference (attached).
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In progress throughout programs
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Superimpose the layer name on the FREW graphical output
Presently in the FREW graphical output each layer is labelled with a number. If the graph is printed/copied on a report there is no way for the reader to understand which geomaterial the model refers to withouth having access to the materials properties table. Superimposing the name given by the user on the graph improves legibility.
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Add inclined Piles
Alp now handles only perfectly vertical piles, it could be nice if it handles inclined piles
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New mesh generator allows this – interface/calcs need revising to suit
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