Seismic Design Guidelines for Solid and Perforated Hybrid Precast Concrete Shear Walls

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This presentation discusses recommended seismic design and detailing guidelines for special hybrid panelized precast concrete shear walls (with and without perforations), including supporting experimental evidence from six 0.4-scale test specimens and a full-scale worked design example. Hybrid precast walls use a combination of deformed Grade 60 bars and high-strength unbonded posttensioning strands for lateral resistance across horizontal joints. The mild steel bars crossing the base joint are designed to yield in tension and compression, providing energy dissipation. The unbonded posttensioning steel provides self-centering capability to reduce the residual lateral displacements of the structure after a large earthquake. The proposed design guidelines include important detailing considerations for the reinforcement at the base as well as the upper floor joints and around the panel perforations. These recommendations are aimed to allow practicing engineers and precast concrete producers to design ACI-compliant special hybrid precast shear walls with predictable and reliable seismic behavior. Ultimately, the results from this project, which was funded by the Charles Pankow Foundation and the Precast/Prestressed Concrete Institute, support the U.S. code approval and practical application of the hybrid precast wall system as a special reinforced concrete shear wall for moderate and high seismic regions.

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Youtube Description
Speakers Yahya (Gino) Kurama
Duration 140
Speaker Bios

Yahya (Gino) Kurama is professor and associate chair in the Department of Civil and Environmental Engineering and Earth Sciences at the University of Notre Dame. He received his B.S. in civil engineering from Bogazici University, Istanbul, Turkey, and his M.S. and Ph.D. in civil engineering from Lehigh University, Bethlehem, Pennsylvania. His research interests include the behavior and design of concrete buildings under earthquake loading, structures under fire effects, and reinforced concrete materials and sustainability. Dr. Kurama is a registered engineer in Indiana and Michigan. He is a co-recipient of the Precast/Prestressed Concrete Institute (PCI) Charles C. Zollman Award in 2015 and 2018, American Society of Civil Engineers (ASCE) State-of-the-Art of Civil Engineering Award in 2012, ASCE T.Y. Lin Award in 2003, and PCI Martin P. Korn Award in 2002. He is also a recipient of the PCI Distinguished Educator Award in 2014, University of Notre Dame Rev. Edmund P. Joyce, C.S.C. Award for Excellence in Undergraduate Teaching in 2013 and 2008, PCI Central Region University Professor of the Year Award in 2012, and PCI Young Educator Achievement Award in 2005. He was selected as a Faculty Fellow by the Kaneb Center for Teaching & Learning at the University of Notre Dame in 2010. He received a CAREER Award from the National Science Foundation in 1999. Dr. Kurama is a member of the American Concrete Institute (ACI) Committees on Performance-Based Seismic Design of Concrete Buildings, Precast Concrete Structures, and Concrete with Recycled Materials; ASCE Composite Construction Committee; and PCI Technical Activities Council, Research and Development Council, Seismic Committee, and Student Education Committee. He also serves as an associate editor for the ASCE Journal of Structural Engineering, has edited/co-edited two special issues/collections on “Sustainable Building Structures” and “Precast/Prestressed Concrete Structures under Natural and Human-made Hazards,” and is currently co-editing a special collection on “RC Structures with High and Ultra-high Performance Materials.”

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