Gergis W. William, Ph.D., P.E., F.ASCE, a senior structural engineer at AECOM who has 20 years of consulting and academic experience in structural analysis, design, testing, and condition assessment of highway structures, has been named a Fellow by the ASCE Board of Direction.
William has led several research projects involving long-term structural health monitoring and detailed 3D finite element modeling of newly constructed, existing, and rehabilitated bridges, ranging from simple to complex multispan and/or curved bridges. His experience also extends to the design and construction of waterfront structures, industrial centers, and high-rise residential buildings. He has widespread practice in 3D nonlinear finite element analysis of diverse complex structures using LS-DYNA. The problems involved have been mesh construction of complicated geometries, contact, nonlinear material behavior, fracture and failure analysis, and validation of results with experimentally measured data.
He also has experience with lightweight composite structures and their application in automotive technologies and onboard hydrogen storage systems. He has undertaken several investigative projects associated with bridge construction and design specifications that required novelty and specialized FE analysis, such as early-age bridge deck cracks, out-of-plane distortion of steel I-girders, and restrained bridge expansion. He provided expert assistance in several issues – such as early-age longitudinal cracking of empirically designed bridge decks and out-of-plane distortion of steel girders – through the WVDOT/FHWA task force in 2006-07.
William serves on several technical committees sponsored by the American Concrete Institute, the ASCE Structural Engineering Institute, and the AASHTO/NSBA Steel Bridge Collaboration. He has authored or coauthored numerous journal and conference papers and design guides, and presented at engineering conferences around the world. He also holds an adjunct associate professorship at West Virginia University.
His areas of interests in design and research include the behavior of steel and concrete bridges with a focus on restrained thermal movements, concrete cracking, behavior of integral abutment bridges, and code development. As a practicing structural engineer, he is interested in methods and techniques for developing more efficient structural design, and in advanced structural testing.
William has doctorate and master’s degrees in civil engineering from West Virginia University, and a bachelor of civil engineering from Alexandria University. He is a licensed professional engineer in West Virginia and Ohio.