Modified Layered-Sectional Analysis for Forensic Investigation
Publication: Journal of Performance of Constructed Facilities
Volume 29, Issue 4
Abstract
This paper describes a modification to the layered-sectional analysis approach, which provides the engineer with a tool to assess structural behavior of concrete beams with localized damage, a problem not well suited to classical, closed-form solutions. The modified layered-sectional analysis (MLSA) framework is applied to a forensic investigation case study in which two prestressed double-tee beams are exposed to a short duration, intense fire in a parking structure. The results of the MLSA are within 1% of the case study load test, which indicates that the MLSA could be a useful, computationally efficient tool for the investigating engineer to predict the postfire serviceability and strength of damaged beams, and potentially eliminate the need for expensive load testing. A short parametric study is included for the research engineer interested in the MLSA for predicting the postdamage behavior of non-standard materials such as enhanced sustainability concrete (ESC).
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Acknowledgments
The authors would like to thank Dr. Ufuk Dilek and MACTEC Engineering and Consulting for supplying the relevant data for the background investigation of the subject member.
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Published In
Journal of Performance of Constructed Facilities
Volume 29 • Issue 4 • August 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Aug 5, 2013
Accepted: Jan 14, 2014
Published online: Jan 16, 2014
Discussion open until: Feb 4, 2015
Published in print: Aug 1, 2015
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