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    Automating Bridge Modeling, Analysis, and Result Extraction with MIDAS CIVIL NX API A Real-Life Bridge Design Automation

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    AI Summary

    This session presents a practical bridge design automation workflow using the MIDAS CIVILn NX API and Excel VBA. Based on a theme park development project with more than 20 similar bridge structures, the presentation explains how repetitive manual modeling, analysis, and result extraction were transformed into a one click automated process. The workflow uses Excel as the main input and output interface, where engineers can define key bridge parameters such as span length, deck width, girder layout, abutment geometry, foundation size, loads, and soil spring data. Through the API script, MIDAS Civil NX automatically generates the model, applies supports and loads, runs the analysis, and sends results back to Excel for design checking. The session highlights how API automation can reduce bridge modeling time from 5 to 8 hours to less than one minute, minimize manual input errors, support fast parametric studies, and allow engineers to focus more on optimization and engineering decisions.

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    Description

    • This video shows how an Excel/VBA setup drives the MIDAS CIVIL NX API to automate bridge modeling, from parameter input all the way to design checks.
    • Bridge parameters are entered in Excel, then the API connection generates the model in MIDAS CIVIL NX, runs the analysis, and extracts results (bending moment, shear force, bearing pressure) back into Excel.
    • The demonstration also shows the extracted results being compared against capacity in a linked design check sheet, completing the loop from input to design verification.

    Key Points

    Excel and VBA Driving the MIDAS CIVIL NX API

    Automated Model Generation and Analysis

    Results Extracted Back to Excel

    Design Check Against Capacity in One Workflow

    Speaker

    Speaker

    Dulan Chinthaka Senior Engineer Meinhardt
    Dulan Chinthaka is a Chartered Engineer (CEng) and Senior Engineer at Meinhardt (Hong Kong) Limited, specializing in the design and construction supervision of long-span and complex bridge structures. He earned his Master’s degree in Structural Engineering and his Bachelor’s degree in Civil Engineering (First Class Honours) from the University of Moratuwa, Sri Lanka. With over 15 years of professional experience across major infrastructure projects in Sri Lanka and Hong Kong, Mr. Chinthaka has expertise in a wide range of bridge types, including viaducts, balanced cantilever, segmental, and post-tensioned box girder bridges. His technical proficiency spans international design codes such as Eurocodes and AASHTO LRFD, and advanced finite element analysis using MIDAS Civil NX. He is also a recognized innovator in engineering automation, having developed API-driven workflows that reduce modeling and reporting time from hours to minutes, enabling rapid design optimization and eliminating manual errors. His current professional focus is on integrating digital transformation and parametric design into bridge engineering to deliver safe, efficient, and innovative infrastructure solutions.
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