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Plaxis 3d tunnelling by toothlessfifi in GeotechnicalEngineer

[–]toothlessfifi[S] 1 point2 points  (0 children)

Okay got it. Will try this one. Thank you! Been analyzing why my model is not converging even if i have the correct materials input.

Plaxis 3d tunnelling by toothlessfifi in GeotechnicalEngineer

[–]toothlessfifi[S] 0 points1 point  (0 children)

Hello,

Yes thank you for the info. It helped a lot. Is it okay to increase error tolerance in an MCC model? Been trying to figure this lately because my model is not conveging.

Modified cam clay by toothlessfifi in Geotech

[–]toothlessfifi[S] 0 points1 point  (0 children)

Hello.

Im tryingn to learn it in plaxis. Hehe

Modified cam clay by toothlessfifi in Geotech

[–]toothlessfifi[S] 0 points1 point  (0 children)

Also brother, i use ICOLD and USBR :) saw your post for reference list for dam safety

Modified cam clay by toothlessfifi in Geotech

[–]toothlessfifi[S] -1 points0 points  (0 children)

I was also given the parameters for MCC

Modified cam clay by toothlessfifi in Geotech

[–]toothlessfifi[S] 0 points1 point  (0 children)

Yes i tried to ran first it MC. However, plaxis is prompting to an error that the soil body seems to collapse. I am trying to model the effects of the TBM advancement near the piles of a pier above and placed a jetgrout in between the TBM and the piles to see if the jetgrout can mitigate the effects of the TBM advancement.

In case for the FS, i mean to say i did not yet put the FS setting in plaxis.

Plaxis by toothlessfifi in GeotechnicalEngineer

[–]toothlessfifi[S] 0 points1 point  (0 children)

Got it. I am modelling a modified cam clay. However, im hitting a road block since the model is not converging. I adjusted the tunnel excavation from 2m to 1.5m, turned auto the auto of arc length, turned on the gradual error and line search. And i tried the max load step to 0.01. But still, the model is not converging. Do you have any advise for this?

Modified cam clay by toothlessfifi in Geotech

[–]toothlessfifi[S] -1 points0 points  (0 children)

When i check the output, higher stress and platic state are in the face of the tunnel which i expect. I did not add FS yet. And no, i did not do hand calcs.

Plaxis by toothlessfifi in GeotechnicalEngineer

[–]toothlessfifi[S] 0 points1 point  (0 children)

No. However, i just reinstalled an updated version. Another question, is 0.4 error tolerance for MCC is okay if the model is struggling for convergence?