Soil-Structure Interaction of Buried Structures

Dr. Hany El Naggar, Ph.D., P.Eng., is a Professor of GeoStructural/Geotechnical Engineering at Dalhousie University with more than 25 years of experience in civil construction, geotechnical and structural engineering and research in Canada and overseas. He has participated in several geotechnical and structural investigations and is experienced in the analysis and design of foundations and soil-structure interaction of buried infrastructure. Dr. El Naggar and his research team have investigated the SSI effects around buried infrastructure and explored innovative uses of tire derived aggregate (TDA) as a buffer zone to create stress arching and reduce demand on rigid pipes and culverts. They also proposed an earth pressure reduction system using a geogrid reinforced platform bridging system to reduce stresses on buried utilities and studied the effects of high-rise buildings on pre-existing tunnels. Likewise, they conducted several slope stability assessments for high embankments and dams and developed a new sand-coated glass fibre reinforced polymer (GFRP) pile with an enhanced friction performance. Dr. El Naggar's research findings have been reported in more than 150 technical publications covering both experimental and numerical work in the fields of SSI, resilient buried infrastructure, and concrete pipes. His research work on the seismic performance of corrugated metal culverts led to changing the seismic provisions of the new version of the Canadian Highway Bridge Design Code (2019) to include rigorous dynamic analysis for flexible buried structures in high seismicity zones. Besides, his work on the modelling of rigid pipes is featured in the CHBDC (2019) as an example of the best practice in modelling buried concrete structures. These research efforts received worldwide recognition.

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