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PLAXIS | SOILVISION Wiki PLAXIS 2D Tutorial 06: Settlements due to tunnel construction
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          • -Tutorials PLAXIS 2D
            • PLAXIS 2D Tutorial 01: Settlement of a circular footing on sand
            • PLAXIS 2D Tutorial 02: Submerged construction of an excavation
            • PLAXIS 2D Tutorial 03: Dry excavation using a tie back wall
            • PLAXIS 2D Tutorial 04: Dry excavation using a tie back wall - ULS
            • PLAXIS 2D Tutorial 05: Construction of a road embankment
            • PLAXIS 2D Tutorial 06: Settlements due to tunnel construction
            • PLAXIS 2D Tutorial 07: Excavation of an NATM tunnel
            • PLAXIS 2D Tutorial 08: Cyclic vertical capacity and stiffness of circular underwater footing
            • PLAXIS 2D Tutorial 09: Stability of dam under rapid drawdown
            • PLAXIS 2D Tutorial 10: Flow through an embankment
            • PLAXIS 2D Tutorial 11: Flow around a sheet pile wall
            • PLAXIS 2D Tutorial 12: Potato field moisture content
            • PLAXIS 2D Tutorial 13: Dynamic analysis of a generator on an elastic foundation
            • PLAXIS 2D Tutorial 14: Pile driving
            • PLAXIS 2D Tutorial 15: Free vibration and earthquake analysis of a building
            • PLAXIS 2D Tutorial 16: Thermal expansion of a navigable lock
            • PLAXIS 2D Tutorial 17: Freeze pipes in tunnel construction
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    PLAXIS 2D Tutorial 06: Settlements due to tunnel construction

    Application PLAXIS 2D
    Version PLAXIS 2D
    Date created 20 May 2017
    Date modified 20 May 2017

    PLAXIS 2D has special facilities for the generation of circular and non-circular tunnels and the simulation of a tunnel construction process. In this lesson, the construction of a shield tunnel in medium soft soil and the influence on a pile foundation is considered. A shield tunnel is constructed by excavating soil at the front of a tunnel boring machine (TBM) and installing a tunnel lining behind it. In this procedure, the soil is generally over-excavated, which means that the cross-sectional area occupied by the final tunnel lining is always less than the excavated soil area. Although measures are taken to fill up this gap, one cannot avoid stress re-distributions and deformations in the soil as a result of the tunnel construction process. To avoid damage to existing buildings or foundations on the soil above, it is necessary to predict these effects and to take proper measures. Such an analysis can be performed by means of the finite element method. This lesson shows an example of such an analysis.

    The attached *.p2dxlog file contains all the commands to generate the model. With a Bentley Geotechnical SELECT Entitlement [GSE] (former PLAXIS-VIP) licence, you can use the commands runner to open the *.p2dxlog file and to execute all commands in one go, see also this instruction.

    Downloads

    • PLAXIS 2D 2018 - Tutorial Lesson 06.pdf
    • PLAXIS 2D 2018 - Tutorial Lesson 06.p2dxlog [command log file]
    • PLAXIS 2D 2017 - Tutorial Lesson 05.pdf

    See also

    PLAXIS 2D Tutorial 05: Construction of a road embankment

    [Tutorials]


    PLAXIS 2D Tutorial 07: Excavation of an NATM tunnel

    [Tutorials]

    • tunnel lining
    • shield tunnel
    • embedded pile row
    • grouting
    • TBM
    • PLAXIS
    • Tunnel
    • PLAXIS 2D
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    • Micha van der Sloot Created by Bentley Colleague Micha van der Sloot
    • When: Wed, Dec 18 2019 10:43 AM
    • Micha van der Sloot Last revision by Bentley Colleague Micha van der Sloot
    • When: Tue, Dec 24 2019 6:13 AM
    • Revisions: 2
    • Comments: 0
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