A study of RC bridge columns under contact explosion

Yuan, S; Hao, H; Zong, Z; Li, J

A study of RC bridge columns under contact explosion

Yuan, S Hao, H Zong, Z Li, J

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Publication Type:: Journal Article
Citation:: International Journal of Impact Engineering, 2017, 109 pp. 378 - 390
Issue Date:: 2017-11-01

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Field	Value	Language
dc.contributor.author	Yuan, S	en_US
dc.contributor.author	Hao, H	en_US
dc.contributor.author	Zong, Z	en_US
dc.contributor.author	Li, J https://orcid.org/0000-0003-2457-1994	en_US
dc.date.issued	2017-11-01	en_US
dc.identifier.citation	International Journal of Impact Engineering, 2017, 109 pp. 378 - 390	en_US
dc.identifier.issn	0734-743X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/123349
dc.description.abstract	© 2017 This paper presents a study on reinforced concrete (RC) bridge columns under contact detonation. Two 1/3 scale RC bridge columns with circular and square cross-sections are studied both experimentally and numerically. Field tests were performed on two types of columns under 1 kg TNT contact explosion, and acceleration data at different heights of the columns were collected by accelerometers. Investigation of the damage evolution and structural local response is conducted by high-fidelity physics-based numerical models that are developed in the commercial program LS-DYNA through the Arbitrary Lagrangian–Eulerian (ALE) algorithm. The results from the numerical simulation are compared with the experimental results. Field blast tests showed that for both columns the cover concrete on the proximal and side surfaces close to the explosive charge suffered serious damage, while the cover concrete on the distal face remained almost intact. Due to the column geometry, the contact explosion caused larger blast loads on the square column leading to more severe damage. The damage mechanism of the two columns is discussed based on numerical simulations. The results from the numerical model match well with those from the tests except for the back-surface damage in both cases. Field data obtained from accelerometers also show reasonable agreement with results from the numerical modelling and confirm the localized structural response of the columns under contact blast loads. It is shown that the numerical models established in this study provide reliable predictions for the structural response of bridge columns under contact explosion.	en_US
dc.relation.ispartof	International Journal of Impact Engineering	en_US
dc.relation.isbasedon	10.1016/j.ijimpeng.2017.07.017	en_US
dc.subject.classification	Mechanical Engineering & Transports	en_US
dc.title	A study of RC bridge columns under contact explosion	en_US
dc.type	Journal Article
utslib.citation.volume	109	en_US
utslib.for	0913 Mechanical Engineering	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	0901 Aerospace Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	109	en_US

Abstract:

© 2017 This paper presents a study on reinforced concrete (RC) bridge columns under contact detonation. Two 1/3 scale RC bridge columns with circular and square cross-sections are studied both experimentally and numerically. Field tests were performed on two types of columns under 1 kg TNT contact explosion, and acceleration data at different heights of the columns were collected by accelerometers. Investigation of the damage evolution and structural local response is conducted by high-fidelity physics-based numerical models that are developed in the commercial program LS-DYNA through the Arbitrary Lagrangian–Eulerian (ALE) algorithm. The results from the numerical simulation are compared with the experimental results. Field blast tests showed that for both columns the cover concrete on the proximal and side surfaces close to the explosive charge suffered serious damage, while the cover concrete on the distal face remained almost intact. Due to the column geometry, the contact explosion caused larger blast loads on the square column leading to more severe damage. The damage mechanism of the two columns is discussed based on numerical simulations. The results from the numerical model match well with those from the tests except for the back-surface damage in both cases. Field data obtained from accelerometers also show reasonable agreement with results from the numerical modelling and confirm the localized structural response of the columns under contact blast loads. It is shown that the numerical models established in this study provide reliable predictions for the structural response of bridge columns under contact explosion.

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http://hdl.handle.net/10453/123349