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Apr 9, 2014
Overview of the NEES-Soft Experimental Program for Seismic Risk Reduction of Soft-Story Woodframe Buildings
Authors: John W. van de Lindt [email protected], Pouria Bahmani, Steven E. Pryor, Gary Mochizuki, Mikhail Gershfeld, Weichiang Pang, Ershad Ziaei, Elaina N. Jennings, Michael D. Symans, Xiaoyun Shao, Jingjing Tian, and Doug RammerAuthor Affiliations
Publication: Structures Congress 2014
Abstract
The existence of thousands of soft-story woodframe buildings in California has been recognized as a disaster preparedness problem resulting in mitigation efforts throughout the state. The considerable presence of these large multi-family buildings in San Francisco prompted the city to mandate their retrofitting over the next seven years. The NEES-Soft project, whose full title is "Seismic Risk Reduction for Soft-Story Woodframe Buildings," is a five-university, multi-industry, three-year project which has many facets including improved nonlinear numerical modeling, outreach, retrofit methodology development, and full-scale system-level experimental validation of soft-story retrofit techniques. In 2013, two full-scale buildings were tested within NEES-Soft. A hybrid test of a three-story building - consisting of a one-story numerical substructure and a two-story physical structure above -at the University at Buffalo, and a shake table test of a four-story building at the University of California - San Diego. A series of retrofits, based on methodologies ranging from FEMA P-807 to performance-based seismic retrofits developed as part of the project, were tested at both sites. Collapse testing for both building specimens was also conducted at the end of each test program. This paper presents a summary of selected test results for these full-scale building tests within the NEES-Soft project.
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© 2014 American Society of Civil Engineers.
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Published online: Apr 9, 2014
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Professor, Civil and Environmental Engineering, Colorado State University, Fort Collins, Colorado, 80523-1372. E-mail: [email protected]
Pouria Bahmani
Ph.D. Candidate, Civil and Environmental Engineering, Colorado State University, Fort Collins, Colorado
Steven E. Pryor
International Director of Building Systems, Simpson Strong-Tie, Pleasanton, California
Gary Mochizuki
Principal, Structural Solutions Inc., Walnut Creek, California
Mikhail Gershfeld
Professional Practice Professor, Civil Engineering, Cal Poly, Pomona, California.
Weichiang Pang
Assistant Professor, Glenn Department of Civil Engineering, Clemson University, Clemson, South Carolina.
Ershad Ziaei
Ph.D. Candidate, Glenn Department of Civil Engineering, Clemson University, Clemson, South Carolina.
Elaina N. Jennings
Ph.D. Candidate, Civil and Environmental Engineering, Colorado State University, Fort Collins, Colorado
Michael D. Symans
Associate Professor, Civil and Environmental Engineering, Rensselaer Polytechnic Institute, Troy, New York
Xiaoyun Shao
Assistant Professor, Civil and Construction Engineering, Western Michigan University, Kalamazoo, Michigan
Jingjing Tian
Ph.D. Candidate, Civil and Environmental Engineering, Rensselaer Polytechnic Institute, Troy, New York
Doug Rammer
Research Engineer, Forest Products Laboratory, Madison, Wisconsin
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