1 Professor, Department of Structural Engineering, University of California at San Diego, La Jolla, CA, USA, pshing@ucsd.edu
2 Professor, Department of Civil, Architectural and Environmental Engineering, Drexel University, Philadelphia, PA, USA, ahmadhamid99@gmail.com
3 Associate Professor, Department of Civil, Architectural and Environmental Engineering, Drexel University, Philadelphia, PA, USA, FLM72@drexel.edu
4 Professor, Department of Civil Engineering, University of Minnesota, Minneapolis, MN, USA, schul088@umn.edu
5 Graduate Student Researcher, Department of Structural Engineering, University of California at San Diego, La Jolla, CA, USA, akoutras@eng.ucsd.edu
ABSTRACT
This paper provides a summary of past research findings on partially-grouted reinforced masonry wall structures and an overview of a research project that has been recently initiated to examine the seismic performance of these structures at the system as well as component level, and to develop and validate economically competitive, improved, design details and retrofit methods to make new and existing partially-grouted reinforced masonry structures better meet current seismic performance standards. The project is being carried out as a joint effort of Drexel University, the University of California at San Diego, and the University of Minnesota. The experimental program to validate the new design methods and details will consist of seventeen partially-grouted reinforced masonry wall components and subassemblies to be tested with quasi-static cyclic loading, and two full-scale, one-story, buildings to be tested with earthquake ground motions on a shake table. Parallel analytical studies will be carried out to improve the shear strength formulas in current codes for partially-grouted walls and develop computational models that can predict the system level performance of these structures.
KEYWORDS: partially grouted, reinforced masonry, seismic performance, seismic design, seismic retrofit
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