Geotechnical feedback

Please leave feedback and development suggestions for the Oasys Geo programs or vote on existing items – thanks for your input!

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  1. add polygonal soil zones into pdisp

    The input for soil zones in pdisp are currently only rectangular, while as it is mostly always polygonal in plan in actual condition. By having this function, settlement can be calculated more accurately, but more importantly, the soil zone lines in Pdisp can be imported from CAD which allows for easier and quicker input.

    3 votes
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    0 comments  ·  Pdisp  ·  Flag idea as inappropriate…  ·  Admin →
  2. A programme or Programmes to design anchored sheetpiled walls with releiving slab and anchor.

    When I worked in OAP's Tottenham Court Road Office in Dockland Development days, I askred the Geotechnical Department about which programme to use to design a steel retaining wall, with relieving slab,and ground anchors. The relieving slab was connected to the anchors, which together with the raking piles, provided latral resistance to the sheet-piles. I was told my design was so economical, it embarassed a director. Can you provide the programmes to simulate the piles and slab, to simulate the sheetpile bending moments, sher ,etc and anything else. I designed the anchors without using a computer.

    1 vote
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    0 comments  ·  Flag idea as inappropriate…  ·  Admin →
  3. Add displacement tolerance to improve curvature output for building damage results

    If a building has near-linear displacement, the checks in the program can cause the output to "flip" between sagging and hogging. Suggest adding a tolerance to this check (user-editable).

    1 vote
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    1 comment  ·  Xdisp  ·  Flag idea as inappropriate…  ·  Admin →
  4. Imported Grids - Interpolation of Results

    Provide interpolation of imported displacements for the case where the imported displacement points do not coincide with the points already in the data file.

    3 votes
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    0 comments  ·  Xdisp  ·  Flag idea as inappropriate…  ·  Admin →
  5. Calculate ground movements above polygon excavation surface level

    Currently immediately above the surface level of an excavation the calculated ground movement = 0mm. It would be helpful to have the ground movements calculated extend above the top of the polygon excavation

    1 vote
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    0 comments  ·  Xdisp  ·  Flag idea as inappropriate…  ·  Admin →
  6. Text Output selection

    Allow user to create custom selection for Text Output to avoid e.g. History if they want all other input data

    1 vote
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    0 comments  ·  Xdisp  ·  Flag idea as inappropriate…  ·  Admin →
  7. Rail damage location export for PDisp

    Export rail damage assessment location data as Displacement Points for PDisp analysis

    2 votes
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    0 comments  ·  Xdisp  ·  Flag idea as inappropriate…  ·  Admin →
  8. Results database

    Database for results (to give user-defined display, post-processing)

    1 vote
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    0 comments  ·  Xdisp  ·  Flag idea as inappropriate…  ·  Admin →
  9. Stage results enveloping

    Summaries of all results for all stages required (i.e. worst cases of any and all stages). (Enveloping.) Database?

    3 votes
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    0 comments  ·  Xdisp  ·  Flag idea as inappropriate…  ·  Admin →
  10. Advanced grid specification

    Specify displacement grid by centreline start and end points, width of grid and frequency of transects (then allow results to be displayed for grid lines in both directions?)

    2 votes
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    0 comments  ·  Xdisp  ·  Flag idea as inappropriate…  ·  Admin →
  11. Tunnel Volume

    Ignore displacement points within tunnels (just as within excacations)

    3 votes
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    0 comments  ·  Xdisp  ·  Flag idea as inappropriate…  ·  Admin →
  12. Provide ground movement calculation for re-entrant corners.

    Two current ideas:


    1. a simple proportioning of the contributions to a point's displacements based on how many sides contribute, if 2, then each 50%, if 3, then each 30% etc. But may also need consideration for the angle. Simple geometrical solution (with warning) if nothing better received.


    2. a geometric solution which could be coded and compared to finite element analysis.


    Same ideas can apply to changes in ground movement curve between one wall and another.

    11 votes
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    open for voting  ·  0 comments  ·  Xdisp  ·  Flag idea as inappropriate…  ·  Admin →
  13. Implementation of soil layering formulation as per Geogiadis

    Implementation of soil layering formulation as per Geogiadis M (1983). Development of p-y Curves for Layered Soils. Proc. Geotechnical Practice in Offshore Engineering, ASCE, pp. 536-545.

    7 votes
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    0 comments  ·  Alp  ·  Flag idea as inappropriate…  ·  Admin →
  14. Direct output of equivalent reaction stiffnesses for wall elements

    See also "Direct output of equivalent subgrade reaction stiffnesses". Pdisp allows the input of horizontal loading on a vertical plane. Equivalent subgrade reaction stiffnesses (reaction springs) for wall elements could be obtained from applied horizontal pressure and resulting movements.

    1 vote
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    0 comments  ·  Pdisp  ·  Flag idea as inappropriate…  ·  Admin →
  15. Direct output of equivalent subgrade reaction stiffnesses

    Pdisp is often used to derive subgrade reaction stiffnesses for input into GSA by manually dividing the applied pressure by the settlement results to calculate the equivalent subgrade reaction springs. The conversion could be built into PDsip itself and a subgrade reaction contour could be plotted. There’s a possible automation linkage with GSA.

    1 vote
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    0 comments  ·  Pdisp  ·  Flag idea as inappropriate…  ·  Admin →
  16. 1 vote
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    0 comments  ·  Xdisp  ·  Flag idea as inappropriate…  ·  Admin →
  17. 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.

    1 vote
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    0 comments  ·  Pile  ·  Flag idea as inappropriate…  ·  Admin →
  18. 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.

    2 votes
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    0 comments  ·  Pile  ·  Flag idea as inappropriate…  ·  Admin →
  19. 12 votes
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    0 comments  ·  Frew  ·  Flag idea as inappropriate…  ·  Admin →
  20. 2 votes
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    0 comments  ·  Xdisp  ·  Flag idea as inappropriate…  ·  Admin →
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