Structures Congress 2018
Design and Construction of Long-Span Composite Beam Specimens for Large Structural-Fire Tests
Publication: Structures Congress 2018: Buildings and Disaster Management
ABSTRACT
A series of experiments is being conducted on five 12.8 m long composite floor beams at the newly-commissioned National Fire Research Laboratory at the National Institute of Standards and Technology. The test beams were designed according to current U.S. building codes with input and design-review provided by panel of expert practitioners. Each specimen consists of a W18×35 beam and a 1.83 m wide lightweight concrete slab cast over profiled steel deck units. Composite action between the steel beam and concrete slab is achieved using 19 mm diameter steel shear connectors spaced at 305 mm on center. One of the five specimens was tested at ambient temperature to measure its behavior and flexural strength, and to verify the purpose-built mechanical loading system. The remaining four specimens will be tested under simultaneously applied mechanical loading and an enclosure fire using a natural gas fuel delivery system. The beam-to-column connections and rotational restraint of the slab ends over the support girders were varied among those four specimens.
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ACKNOWLEDGEMENTS
The support of numerous NIST colleagues on this work is acknowledged and greatly appreciated: Brian Story, Anthony Chakalis, Laurean DeLauter, Philipp Deardorff, Matthew Bundy, Artur Chernovsky, Doris Rinehart, Chao Zhang, Mina Seif, Qi Li, Ana Sauca, Dale Bentz, Scott Jones, Timothy Barrett, Max Peltz, Kevin McGrattan, Morgan Bruns, Randy Shields, Fahim Sadek, Joe Main, Jonathan Weigand, and Jian Jiang. The authors would like to thank Alana Guzetta of US Concrete who prepared the concrete mix design, as well as Roberto Talavera of Superior Concrete who supervised the casting. Expertise on fiber optic instrumentation was provided by Genda Chen, Yi Bao, Steve Guo, Matthew Klegseth, Branko Glisic, and John Reilly.
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Published In
Structures Congress 2018: Buildings and Disaster Management
Pages: 151 - 162
Editor: James Gregory Soules, 1CB&I
ISBN (Online): 978-0-7844-8132-5
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Apr 17, 2018
Published in print: Apr 17, 2018
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