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    Webinar
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    Assessing the Safety of Aging Arch Dam
       
    Session Overview

    Aging concrete dams require careful evaluation beyond standard static checks. This session presents a practical case study of a 100-year-old concrete arch gravity dam in Australia, focusing on how static, thermal, and seismic effects were assessed through finite element analysis using MIDAS FEA NX.

     

    The session will walk through the modelling approach, including dam–foundation interaction, unbonded lift joints, vertical contraction joints, seasonal thermal variations, and nonlinear time history analysis. Participants will see how engineering investigation data, load combinations, stress results, displacement behavior, and sliding stability checks are brought together to evaluate the dam’s structural integrity and long-term safety.


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    Who Should Attend
    • Dam engineers, structural engineers, and civil engineers involved in the assessment, design, or rehabilitation of concrete dams and hydropower structures.

    • Professionals responsible for dam safety reviews, risk assessments, and stability evaluations under flood, thermal, and seismic loading conditions.

    • Engineers interested in applying finite element analysis to evaluate static response, seasonal thermal behavior, nonlinear seismic performance, and sliding safety of aging dam structures.

    Learning Objectives

    📌Structural and Stability Assessment under Critical Loading 

     Understand how the dam was assessed for structural response and overall stability under static loads, Probable Maximum Precipitation Flood (PMPF), and earthquake loading conditions. 

     

    📌Data-Driven Evaluation Based on Recent Investigations 

     Learn how recent concrete coring, field investigations, and laboratory testing results were incorporated to support a more realistic and reliable assessment. 

     

    📌Thermal Behaviour with Seasonal Variation 

     Explore how thermal analysis was used to evaluate the dam’s behaviour under seasonal temperature changes and their influence on structural performance. 

     

    📌Nonlinear Seismic Analysis and Sliding Safety 

     See how earthquake effects were evaluated using nonlinear time history analysis, and how safety factors against sliding were determined under various loading scenarios. 

    Speaker
    Dileep Kumar Chandragiri
    Dileep Kumar Chandragiri
    Lead Civil Engineer ㅣ Aurecon Australasia Pty Ltd

    Dileep is a Chartered Professional Engineer specializing in Civil and Structural Engineering, with over 18 years of experience in hydropower and dam infrastructure projects across India, Nepal, Bhutan, Afghanistan, Africa, and Australia. His expertise includes FSR/DPR preparation, tender and detailed design, dam safety and risk assessments, spillway upgrades, and structural design for dams, headworks, tunnels, powerhouses, and related infrastructure. He has worked as both owner’s and contractor’s engineer on projects ranging from 2.60 MW to 1680 MW, providing design, documentation, coordination, and site engineering support.