Structures Congress 2019
Design and Analysis of Unretrofitted and Retrofitted Glulam Beams and Columns under Blast Loading
Publication: Structures Congress 2019: Blast, Impact Loading, and Research and Education
ABSTRACT
The findings of a comprehensive study involving the static and dynamic investigation of seventy unretrofitted and FRP retrofitted glulam structural elements are presented in this paper. Key observations made in the experimental program regarding material properties, effect of combined axial and out-of-plane blast loading, and strengthening strategies using FRP are used as foundation for design recommendations. Based on the experimental results, unretrofitted glulam beams and columns were shown to have no significant post-peak resistance and thus it is recommended that such members be modeled using a linear flexural resistance curve with a ductility ratio of unity. A dynamic increase factor was found to only be present in beams with no continuous or closely aligned finger-joints. In cases where the finger-joint distribution is not known, a DIF of unity is recommended. Fibre-reinforced polymers (FRP) were shown to only provide significant post-peak resistance when bidirectional fabrics were used as confinement.
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Published In
Structures Congress 2019: Blast, Impact Loading, and Research and Education
Pages: 137 - 146
Editor: James Gregory Soules, McDermott International
ISBN (Online): 978-0-7844-8224-7
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Apr 22, 2019
Published in print: Apr 22, 2019
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