Yahya C. Kurama Professor
In the area of earthquake engineering, Dr. Kurama is also interested in the displacement and acceleration demands exerted on building structures from earthquake loading. The ground motion itself is the most important variable governing the outcome and amount of uncertainty from the nonlinear response of structures. Current research at the University of Notre Dame is conducting a large number of small-scale shake-table experiments of re-configurable nonlinear structural models using an exhaustive set of ground motion records. This research will shed light into seismic demand quantification as well as the selection and modification of ground motion records to obtain accurate and efficient estimates of the median demands.
Another research thrust area that Dr. Kurama has been working on is the structural behavior and design of reinforced concrete buildings under fire loading. Current structural design in the U.S. does not consider fire as a design condition, as it does the effects of dead loads, live loads, wind loads, and earthquake loads. As such, the available design methods and analysis tools cannot be used to evaluate the structural performance of a building under a prescribed fire scenario. In accordance with the research need in this area, full-scale experiments of concrete building assemblies are conducted under gravity and fire loading. Ultimately, these test results will be used to develop design and analysis guidelines for these structures.
A more recent focus area for Dr. Kurama's research involves the use of recycled concrete aggregates in structural concrete applications. The amount of crushed stone, sand, and gravel produced in the U.S. accounts for more than half of all mining. These operations consume vast amounts of energy and negatively impact the ecology of forested areas and riverbeds. By using recycled coarse aggregates derived from demolished infrastructure to supplement virgin aggregates in new construction, it would be possible to substantially improve the resource productivity of the concrete industry. The current research project is conducting a comprehensive series of experiments to investigate the effects of using significant amounts of recycled aggregates from various sources as coarse aggregate replacement in reinforced concrete structures.
Weldon, B. and Kurama, Y., "Experimental Evaluation of Post-Tensioned Precast Concrete Coupling Beams," Journal of Structural Engineering, American Society of Civil Engineers, Vol. 136, No. 9, September 2010.
Jiang, H. and Kurama, Y., "Analytical Modeling of Medium-Rise Reinforced Concrete Shear Walls," ACI Structural Journal, American Concrete Institute, Vol. 107, No. 4, July-August 2010, pp. 400-410.
Knaack, A., Kurama, Y., Kirkner, D., "Compressive Strength Relationships for Concrete Under Elevated Temperatures," ACI Materials Journal, American Concrete Institute, Vol. 107, No. 2, March-April 2010, pp. 164-175.
Walsh, K. and Kurama, Y., "Behavior of Unbonded Post-Tensioning Monostrand Anchorage Systems Under Monotonic Tensile Loading," PCI Journal, Precast/Prestressed Concrete Institute, Vol. 55, No. 1, Winter 2010, pp. 97-117.
Kurama, Y. and Shen, Q., "Seismic Response Evaluation of Unbonded Post-Tensioned Hybrid Coupled Wall Structures," Earthquake Engineering and Structural Dynamics, Vol. 37, No. 14, November 2008, pp. 1677-1702.
Morgen, B. and Kurama, Y., "A Friction Damper for Post-Tensioned Precast Concrete Moment Frames," PCI Journal, Precast/Prestressed Concrete Institute, Vol. 49, No. 4, July-August 2004, pp. 112-133.
Phone: (574) 631-8377
Email: ykurama(at)nd.edu
Web: www.nd.edu/~concrete
Building Structures under Extreme Hazard
Structural Testing, Design, and Nonlinear Analysis
Steven Barbachyn
Adam Knaack
Kevin Mueller
Andrew O'Donnell
Brian Smith
Reinforced Concrete Design
Advanced Topics in Reinforced Concrete Design
Prestressed Concrete
The Big Beam