Blast Performance of Single-Span Precast Concrete Sandwich Wall Panels
Publication: Journal of Structural Engineering
Volume 140, Issue 12
Abstract
A research program was conducted to assess the capability of conventional non-load-bearing insulated precast concrete exterior wall panels to withstand blast loadings. Typical construction details from the tilt-up and prestressed concrete industries were examined. The sensitivity of insulation type, reinforcement, foam thickness, and shear tie type on the flexural resistance was assessed. Forty-two single-span static experiments were conducted on 14 different panel designs. From the results of these experiments, resistance functions and deformation limits for insulated concrete sandwich panels were determined. The resistance functions were used to develop predictive dynamic models for panels subjected to blast demands. The models were found to be accurate in comparison to measurements from four full-scale blast detonations. The findings of the research indicate that both prestressed and non-prestressed insulated concrete wall panels meet current rotational limits defined by the U.S. Army Corps of Engineers for protective structures. Simplified methods for modeling the pressure-deformation characteristics of insulated panels can be used to approximate the peak dynamic deformation and reaction loads.
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Acknowledgments
The authors thank the Air Force Research Laboratory (Dr. Robert Dinan and Dr. Michael Hammons, Program Managers) for funding this work under contracts FA4918-07-D-0001 and FA8903-08-D-8768. The experiments were performed at the Air Force Research Laboratory located at Tyndall AFB, FL, and at the University of Missouri – Columbia. The work was conducted under a Cooperative Research and Development Agreement (CRADA) between the Portland Cement Association, the Prestressed/Precast Concrete Institute, and the Tilt-Up Concrete Association. The authors also thank John Sullivan, Jason Krohn, Michael Sugrue, and the member companies of these organizations for technical and fabrication support of the research. In addition, the authors thank the Geotechnical and Structures Laboratory of the U.S. Army Corps of Engineers for efforts in revising this document. Citation of manufacturers or trade names does not constitute an official endorsement or approval of the use thereof. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation hereon.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 140 • Issue 12 • December 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jul 1, 2013
Accepted: Dec 2, 2013
Published online: Jun 12, 2014
Discussion open until: Nov 12, 2014
Published in print: Dec 1, 2014
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