Centrifuge Modeling of Underground Tunnel in Saturated Soil Subjected to Internal Blast Loading
Publication: Journal of Performance of Constructed Facilities
Volume 30, Issue 2
Abstract
A centrifuge test was carried out to investigate the response of transit tunnels in saturated soils under internal blast loading. A similar test with dry soil was conducted beforehand as a comparison. The tests were carried out with a centrifugal acceleration of 50 g to simulate the effect of blast loading from 150-kg trinitrotoluene (TNT) inside a transit tunnel of 5-m diameter. Exploded bridgewire (EBW) charges were employed as the model explosives, and the model tunnel was simulated by thin-wall aluminum tube. The model tunnels were significantly damaged by the projectiles that were part of the EBW charges. Soil liquefaction occurred in saturated soil with 150 kg of TNT exploded at approximately the center of the tunnel.
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Acknowledgments
This paper is based upon work supported by the U.S. Department of Homeland Security under Award Number 2010-ST-062-000040. The support is gratefully acknowledged. The views and conclusions contained in this paper are those of the writers and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Department of Homeland Security.
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Information & Authors
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Published In
Journal of Performance of Constructed Facilities
Volume 30 • Issue 2 • April 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Jul 14, 2014
Accepted: Feb 12, 2015
Published online: Mar 10, 2015
Discussion open until: Aug 10, 2015
Published in print: Apr 1, 2016
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