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    Global FEM Online Workshop Series 2 2025 Construction Strategies for NATM/SEM Tunnels

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    AI Summary
    • Reviews a São Paulo Metro project using 3D FEM analysis to evaluate tunnel behavior in residual porous clayey soils.
    • Shows how construction staging and excavation sequence influence settlement prediction and deformation control.
    • Demonstrates how support systems are adjusted based on soil–structure interaction and field monitoring.
    • Connects numerical analysis with on-site decision-making to refine construction strategies and reduce settlement risks.
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    Benefit

    Webinar Slides

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    What You'll Take Away

    A practical workflow for 3D FEM analysis of NATM/SEM tunnels

    Key considerations for soil–structure interaction in residual clayey soils

    Methods for predicting and mitigating ground settlement during staged excavation

    Strategies to refine support systems and excavation steps based on analysis and field feedback

    Case studies from engineers at AtkinsBéales, Arcadis, and Mott MacDonald

    Description

    Shallow NATM/SEM tunnels in residual porous clayey soils require careful control of deformation and ground response. The interplay between excavation sequence, support configuration, and soil–structure interaction becomes critical, especially in dense urban environments where settlement control is a key performance requirement.

    In this session, we will review a real project from the São Paulo Metro in Brazil, highlighting how 3D FEM analysis was used to evaluate tunnel behavior, optimize construction staging, and adjust support systems to reduce settlement risks. The focus is on how analysis informs practical construction strategies and on-site decision-making.

     

    Who Should Attend

    • Geotechnical and tunnel engineers working with NATM/SEM methods
    • Underground and metro design engineers dealing with shallow urban tunneling
    • Construction stage and field engineers responsible for settlement and deformation control
    • Numerical modeling specialists focusing on soil–structure interaction in soft or residual soils

     

    Why Should Join 

    • Learn how shallow NATM/SEM tunnels behave in residual porous clayey soils
    • Understand how to use 3D FEM to predict settlement and evaluate support performance
    • See how design assumptions evolve throughout excavation and field monitoring
    • Gain insight into adjusting construction sequences to maintain stability and control deformations

     

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    Speaker

    Osvaldo P. M. Vitali Asst. Prof., Civil Eng. The University of Hawaiʻi at Mānoa
    Osvaldo P. M. Vitali, Ph.D., P.E., is an Assistant Professor of Civil Engineering at the University of Hawaiʻi at Mānoa, specializing in geotechnical and tunneling engineering. He earned his Ph.D. in Civil Engineering from Purdue University and is a licensed Professional Engineer in Hawaiʻi. Dr. Vitali has over 15 years of professional experience in the design and numerical modeling of tunnels, deep excavations, and underground structures in complex ground conditions. His research currently focuses primarily on tunnel, ground, structure interaction under complex loading and geotechnical conditions.
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    FAQs

    General Q1. Is this training program free of charge? Expand or Collapse
    A. Yes! The Global Geotechnical Webinar Series 2025 is completely free of charge. Once registered, you’ll get access to all live and on-demand sessions, expert talks, hands-on tasks, and learning materials — at no cost.
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    General Q3. Where can I get the assignment files and how should I submit them? Expand or Collapse
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    General Q5. How can I receive the certificate of completion? Expand or Collapse

    The requirements for earning the certificate are :
    ✅ Submit 1 assignment by Dec 5, 2025 (PDF Certificate of Completion)
    ✅ Submit 3 assignments in total by Dec 5, 2025 (LinkedIn Shareable Certificate with Credential ID)
    🚩Certificates will be emailed to qualified participants on Dec 12, 2025.
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