Soil tunnel modelling
Hi!
I've encountered a problem trying to model a double liner approach with two soil elements as liners. It could be a problem with meshing, which would lead me to using the plate+soil element instead. In addition I'm modelling a permanent jet grouted…
Concrete Model for Plain Concrete Tunnel
Hello,
We are involved in an urban excavation design that could affect to old existing subway tunnels with a plain concrete linning. In order to evaluate maximum linning tensions due to excavation we have seen that using linear elastic model for plain…
How to choose the suitable mining ventilation system?
We have a new tunnelling project in Canada,would like to find a professional company help designing the ventilation system. Is there any suggestions?
TUNNEL EARTH PRESSURES
Dear plaxis users,
When you want to analyse a TUNNEL in structural programs such as SAP2000, where the soil cannot be introduced directly to the software,
If the tunnel model is created in Plaxis 2D, how can I obtain the earth pressures acting on…
Tunnel sequencing using python
How to set TBM tunnel sequencing steps using python? in other words, I want to retrieve the step object to assign tunnel seqence. for example: g_i.deactivate(g_i.TCS_1_volume_1_1, ?????)
Deconfinement feature might generate wrong stress distribution for dry conditions
Application
PLAXIS 2D
Issue status
Solved
First Affected Version
PLAXIS 2D CONNECT Edition V20 Update 4
Found in Version
PLAXIS 2D CONNECT Edition V20 Update 4 PLAXIS 2D CONNECT Edition V21
Fixed and Released in Version…
Getting pore water pressure in drained clay Plastic calculation.
As can be seen in the drawing, there is drained clay sandwiched between drained sand layers. When I am doing the plastic calculation, I am getting 0 excess pore water pressure in sand, but not in the drained clay layer soil. What can be the reason for…
Structural forces in volume: Plaxis 3D
Hi,
I am dealing with modelling of cross passage between two TBM tunnels. I have created the TBM tunnels by using tunnel designer and since my geometry requires lots of trimming and joining of surfaces and volumes I have detached the TBM elements from…
Deconfinement in Plaxis 3D?
We have deconfinement option to relax the soil in plaxis 2D, similarly do we have any other option plaxis 3D. I have tried surface pressure inside tunnel and could not produce accurate results. Can anyone help me?
Importing from Microstation to PLAXIS: full Tunnel geometry
Application
PLAXIS 3D
Version
PLAXIS 3D CONNECT Edition V21
Date created
22 January 2021
Date modified
1 February 2021
We can now import Microstation CAD files. In this video, we show you how to take a Tunnel…
Composite liner approach in PLAXIS 2D
Application
PLAXIS 2D
Version
PLAXIS 2D CONNECT Edition
Date created
10 December 2020
Date modified
10 December 2020
General
Double lining is a kind of tunnel structure composed of an outer primary lining (segmental…
Tunnel beams/girders generated in the wrong direction
Application
PLAXIS 3D
Issue status
Solved
First Affected Version
PLAXIS 3D CONNECT Edition V20 Update 4
Found in Version
PLAXIS 3D CONNECT Edition V20 Update 4
Fixed and Released in Version
PLAXIS 3D CONNECT Edition V21…
Deconfinement method gives unexpected results in case of pore water pressure change in PLAXIS 2D
Application
PLAXIS 2D
Issue status
Open
First Affected Version
PLAXIS 2D 2018.00
Found in Version
PLAXIS 2D CONNECT Edition V20 Update 2
Fixed and Released in Version
PLAXIS 2D CONNECT Edition V20 Update 4
Issue…
PLAXIS 3D Tunnel Designer
Application
PLAXIS 3D
Version
PLAXIS 3D
Date created
09 April 2015
Date modified
09 April 2015
This movie shows how to define a tunnel, a trajectory and how to divide the trajectory in the to-be-excavated tunnel…
Concrete model
Application
PLAXIS 2D PLAXIS 3D
Version
PLAXIS 2D PLAXIS 3D
Date created
09 October 2018
Date modified
09 October 2018
The Concrete model was initially developed as a user defined soil model (called Shotcrete model…
Response of a rock mass to circular excavation (non-uniform in-situ stress)
Application
PLAXIS 2D
Version
PLAXIS 2D
Date created
25 February 2016
Date modified
25 February 2016
In the video, we show how to set-up the model discussed in the validation report below. The validation concerns…
How to define an excavation sequence in Tunnel Designer
Application
PLAXIS 3D
Version
PLAXIS 3D
Date created
08 December 2016
Date modified
08 December 2016
After defining the tunnel cross-section properties, users can from now on (since PLAXIS 3D 2016) proceed with…
Seepage around a pressure tunnel
Application
PLAXIS 2D
Version
PLAXIS 2D 2015
Date created
12 February 2016
Date modified
12 February 2016
This movie demonstrates how to set-up a model to predict the development of seepage around a pressure tunnel…
Circular tunnel driven in elastic cross anisotropic rocks
Application
PLAXIS 2D
Version
PLAXIS 2D
Date created
26 February 2016
Date modified
26 February 2016
This movie shows how to set-up the model used in the validation document linked below. The validation concerns…
Response of a rock mass to circular excavation (uniform in-situ stress)
Application
PLAXIS 2D
Version
PLAXIS 2D
Date created
25 February 2016
Date modified
25 February 2016
In the video we show how to set-up the model discussed in the validation report below. The validation concerns…
How to model Rockbolts in the Tunnel Designer
Application
PLAXIS 2D
Version
PLAXIS 2D
Date created
25 February 2016
Date modified
25 February 2016
In this movie we explain how to define rockbolts in the Tunnel Designer, available since PLAXIS 2D 2016.
Note…
PLAXIS 2D Thermal
Application
PLAXIS 2D
Version
PLAXIS 2D
Date created
19 February 2015
Date modified
19 February 2015
In this movie we demonstrate the possibilities of the Plaxis 2D Thermal module. Tutorial lesson 16 Freeze pipes…
Construction of a branch tunnel
Application
PLAXIS 3D
Version
PLAXIS 3D
Date created
09 May 2011
Date modified
09 May 2011
This movie demonstrates a more complex project modeled and calculated in PLAXIS 3D. The construction of a branch tunnel…
Using the intersect and combine tools
Application
PLAXIS 3D
Version
PLAXIS 3D
Date created
09 May 2011
Date modified
09 May 2011
By the example of the construction of a tunnel out of 2 cilinders, the intersect and combine tools are explained.
Using Rockbolts in the 3D Tunnel Designer
Application
PLAXIS 3D
Version
PLAXIS 3D
Date created
07 December 2016
Date modified
07 December 2016
With the release of PLAXIS 3D 2016, it is now possible to add rockbolts to tunnel segments in the Tunnel Designer…