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Contact Information
Links
Current Research:
EIT Demonstration Project and Workshop
NSF: Development of a Blast and Ballistic Resistant Precast Concrete Armored Wall System
NEES-CR: Impact Forces from Tsunami-Driven Debris
Inspection Methods & Techniques to Determine Non Visible Corrosion of Prestressing Strands in Concrete Bridge Components
Daniel P. Jenny PCI Fellowship: Analytical Assessment of the Resistance of Precast Strucutres to Blast Effects
Development of a Seismic Design Methodology for Precast Diaphragms
Use of Polyurea for Blast Hardening of Concrete Construction
Estimation of Concrete Respone Under Varying Confinement
Past Research Projects
Performance of Bulb Tees with Self Consolidating Concrete
Evaluation of Bond Mechanics in Prestressed Concrete Applications
FRP Bridge Decks with RC
Parapets
Blast Resistance of a Load
Bearing Shear Wall Building
Lehigh@NEES
Equipment Site
Reserarch Experinece for
Undergraduates
Seismic Evaluation of a Three Story
WoodFrame Apartment Building with Tuck-Under Parking
Design of RC Bridge Beam-Column
Connections
Response of Waffle Slab
Building Systems to Seismic Loads
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PCI Research Project: Development of an Inelastic Design Methodology for Precast Floor Diaphragms
University of Arizona, Lehigh University, University of California San Diego
Robert Fleischman, Clay Naito, Jose Restrepo, Richard Sause
Live Access
Lehigh University Task:
Development of Design Procedures for Precast Panel Diaphragm Connections
Background:
As a consequence of the Northridge Earthquake a number of
precast concrete parking structures were damaged. The unexpected poor performance
of these structures has led to a number of questions on the suitability of
current design practices for seismic regions. To address this concern I am
working on a collaborative research project to develop a comprehensive, accurate,
and efficient design methodology for precast concrete floor diaphragms in
buildings under seismic loading. The project is being conducted with a consortium
comprised of the University of Arizona (UA), the University of California
San Diego (UCSD), and Lehigh University (LU), together with the Precast/Prestressed
Concrete Institute (PCI). Closely integrated experimental and analytical simulations
are being used to significantly advance knowledge of the seismic behavior
of precast floor diaphragms and develop information on the stiffness, strength,
and ductility capacity of critical precast diaphragm elements. Integrating
these results with industry knowledge, the project will produce an appropriate
seismic design methodology. The Lehigh Task Group intends to study diaphragm
connection details, which will lead to development of a standard and reliable
seismic design method for connections. Single panel-to-panel connector tests
will be conducted as our starting point of this program.
Researchers:
Clay Naito, Principal Investigator
Richard Sause, Co-Principal Investigator
Liling Cao, Doctoral Student Researcher
Wesley Peters, Graduate Student Researcher
Publications:
1. Naito, C., Cao, L., “Precast Diaphragm Panel Joint Connector Performance,”
Paper 2722, Proceedings 13th World Conference on Earthquake Engineering, Vancouver,
Canada, August, 2004.
2. R. Fleischman, J. Restrepo, R. Sause, C. Naito and S. K. Ghosh, "Development of a seismic
design methodology for precast diaphragms", to be published in the proceedings of 13th World
Conference on Earthquake Engineering, Vancouver, B.C., Canada, Aug. 2004
3. R. Fleischman, J. Restrepo, R. Sause, C. Naito, and S.K. Ghosh, "Development of a Seismic
Design Methodology for Precast Diaphragms", to be published in the proceedings of SEAOC
Convention, Monterey, CA, Aug. 2004
4. Abstract accepted by 2004 ACI National Conference, SF, CA, Oct. 2004
Sponsors:
Precast/Prestressed Concrete Institute
National Science Foundation
Pennsylvania Infrastructure Technology Alliance
High Concrete Strucutres
Ivy Steel and Wire
Metromont Precast
Page Last Updated Monday, 17-Sep-2007 10:11:41 EDT
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