Structures Congress 2019
Computer Predictions of Tunnel Response to Blast
Publication: Structures Congress 2019: Blast, Impact Loading, and Research and Education
ABSTRACT
Deeply buried bunkers offer a level of protection that is unmatched by conventional, above-ground, construction methods. The construction of the bunker itself, as well as ingress/egress and ventilation for the completed bunker, requires substantial digging. Thus, deeply buried bunkers are usually located within a mountain and accessed via tunnels. In order to better predict the response of tunnels and bunkers to an average design blast load, computer simulations were performed. First, a simplified groundshock numerical code based on an assumed geology and buried depth was used to predict the demand. Then, analytical methods were utilized to design the tunnel wall and bunker slab geometries and reinforcement details. Finally, high-fidelity models were developed to predict the structural response. Physical tests on scaled specimens validated the baseline simulations. Additionally, three concrete materials models are compared.
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6. ACKNOWLEDGEMENTS
The authors acknowledge useful conversations with Nate Pauls, Sean Martin, Roy Elmore, Justin Hawthorne, Jes Barron, Richard Gash, Sam Heider, Chris Conley, as well as the support from DTRA, and the donation of concrete materials from Coastal Pipeline Products, Inc. The high-fidelity simulations were performed using U.S. Department of Defense High Performance Computing (HPC) Modernization Program systems.
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Published In
Structures Congress 2019: Blast, Impact Loading, and Research and Education
Pages: 31 - 47
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
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