Dynamic analysis-tunnel lining
Hello,
I am running a dynamic analysis model in Plaxis to find a vertical displacement of the pipeline in liquefiable soil, but it takes one day and is still running in 11.21 seconds. Is it normal for this kind of analysis in Plaxis? If so, anyone could…
How can I overcome/rectify this void around the tunnel?
Hello,
I modeled a tunnel of 2.5 m in the soil layer. In the calculation result at the lining stage voids are created around the pipe. How can I remove these voids? what is the reason behind this phenomenon? Many thanks for your help.
Cable reinforcements in PLAXIS Tunnel Designer
Application
PLAXIS 2D
Version
PLAXIS 2D 2023.1
Date created
08 March 2023
Date modified
08 March 2023
With the release of PLAXIS 2D 2023.1, the tunnel designer has been updated to include the Cable bolt element…
On-demand Webinar - Coffee Corner: Geotechnical Analysis - Tunnelling simulated by the convergence-confinement method in PLAXIS 2D
Title: Coffee Corner: Geotechnical Analysis (PM) - Tunnelling simulated by the convergence-confinement method in PLAXIS 2D
Date: Tuesday, January 17, 2023
Time: 4:00 PM Central European Time
Presenters: Vasileios Basas - Technical Support Engineer…
NATM Tunneling - Beta Method: Incomplete Staged construction method vs. Deconfinement method
Application
PLAXIS 2D
Version
PLAXIS 2D CONNECT Edition V22 and later
Date created
20 January 2023
Date modified
20 January 2023
Original author
Kalyani Singh
Introduction
In the NATM method, the tunnel…
Tunnel _ volume strain input
Hi all, I was modelling the volume expansion (due to temperature change) by inputting the volume strain of material directly. But when I consider the tunnel, I cannot input the volume strain value to the lining ( plate material), so it shows the wrong…
Rock reinforcement modelling: cables in PLAXIS 2D
Application
PLAXIS 2D
Version
PLAXIS 2D 2023.2
Date created
01 Dec 2022
Date modified
03 Oct 2023
Rock reinforcements have been widely used in rock engineering practice and represent a dominant system in mines…
Support capacity evaluation of a tunnel lining in PLAXIS 2D
Application
PLAXIS 2D
Version
PLAXIS 2D CONNECT Edition V22 Update 1 and later
Original Author
Richard Witasse - Application Engineer
Date created
01 November 2022
Date modified
01 November 2022
The project…
PLAXIS 2D and 3D for Tunnels and Underground Excavations | In-person workshop | Sept 26+27
Join us in this instructor-led course to learn the fundamentals of modelling mechanized and conventional tunnels in both PLAXIS 2D and 3D. This in-person training organised in partnership with GHD will review the most-common practical aspects of modelling…
Field of stresses in "non deep tunnels"
Hi,
I am a rock engineer getting started with Plaxis. As many rock engineering people I am more familiar with the Rocscience package but I am starting to see great potential on PLAXIS.
In the Rocscience package there was a possiblity to model gravity…
![Coffee Corner: Geotechnical Analysis - Efficient tunnel advancement for complex NATM tunnels in PLAXIS [April 12]](https://communities.bentley.com/cfs-filesystemfile/__key/communityserver-components-secureimagefileviewer/communityserver-blogs-components-weblogfiles-00-00-34-39-04/2474.Webinar_5F00_CoffeeCorner.png_2D00_100x100x2.png?_=637850179029443594)
Coffee Corner: Geotechnical Analysis - Efficient tunnel advancement for complex NATM tunnels in PLAXIS [April 12]
Webinar Title
Coffee Corner: Geotechnical Analysis - Efficient tunnel advancement for complex NATM tunnels in PLAXIS
Presenter
Micha van der Sloot, Senior Manager User Success - Geotechnical, Bentley Systems, Inc.
Date
Tuesday, April…
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…
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…
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…