Blast-induced dynamic responses of reinforced concrete structures under progressive collapse
To study the response of reinforced concrete structures under progressive collapse induced by an actual blast event, an experimental programme on reinforced concrete frames subjected to contact detonation was conducted. The tested structure included a double-span beam with a middle joint, side colum...
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sg-ntu-dr.10356-1640462023-01-03T06:56:48Z Blast-induced dynamic responses of reinforced concrete structures under progressive collapse Anh Tuan Pham Brenneis, Christian Roller, Christoph Tan, Kang Hai School of Civil and Environmental Engineering Engineering::Civil engineering Blast-Induced Catenary Action To study the response of reinforced concrete structures under progressive collapse induced by an actual blast event, an experimental programme on reinforced concrete frames subjected to contact detonation was conducted. The tested structure included a double-span beam with a middle joint, side columns and beam extensions connected to external restraints. The experimental programme employed similar geometry, reinforcing arrangement, material properties and boundary restraints from previous quasi-static as well as free-fall dynamic test series, which focused on the effects of horizontal restraint conditions on the mobilisation of catenary action. Compared to the corresponding static and free-fall tests conducted previously, the blast-induced tests simulated the condition of a progressive collapse event triggered by an explosive charge which is close to actual accidental/terrorist situations. As a result, initial effects/damages created by the initial blast effects-that is uplift of the double-span beam and blast pressure on beam and column-were witnessed and well captured. Damage patterns and failure modes from the blast tests were compared with those from related quasi-static and free-fall tests to emphasise the actual behaviour of structures under realistic explosive attacks. Finally, the blast tests also indicated the limitations of some simplified dynamic assessment methods when applying the single column removal assumption. Ministry of Home Affairs This research is funded by the research grant GPC: MHA 191/9/1/345 provided by the Ministry of Home Affairs, Singapore and by the Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 107.01-2018.01. The authors greatly appreciate this financial support. 2023-01-03T06:56:48Z 2023-01-03T06:56:48Z 2022 Journal Article Anh Tuan Pham, Brenneis, C., Roller, C. & Tan, K. H. (2022). Blast-induced dynamic responses of reinforced concrete structures under progressive collapse. Magazine of Concrete Research, 74(16), 850-863. https://dx.doi.org/10.1680/jmacr.21.00115 0024-9831 https://hdl.handle.net/10356/164046 10.1680/jmacr.21.00115 2-s2.0-85124269014 16 74 850 863 en MHA 191/9/1/34 Magazine of Concrete Research © 2022 ICE Publishing. All rights reserved. |
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Engineering::Civil engineering Blast-Induced Catenary Action Anh Tuan Pham Brenneis, Christian Roller, Christoph Tan, Kang Hai Blast-induced dynamic responses of reinforced concrete structures under progressive collapse |
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To study the response of reinforced concrete structures under progressive collapse induced by an actual blast event, an experimental programme on reinforced concrete frames subjected to contact detonation was conducted. The tested structure included a double-span beam with a middle joint, side columns and beam extensions connected to external restraints. The experimental programme employed similar geometry, reinforcing arrangement, material properties and boundary restraints from previous quasi-static as well as free-fall dynamic test series, which focused on the effects of horizontal restraint conditions on the mobilisation of catenary action. Compared to the corresponding static and free-fall tests conducted previously, the blast-induced tests simulated the condition of a progressive collapse event triggered by an explosive charge which is close to actual accidental/terrorist situations. As a result, initial effects/damages created by the initial blast effects-that is uplift of the double-span beam and blast pressure on beam and column-were witnessed and well captured. Damage patterns and failure modes from the blast tests were compared with those from related quasi-static and free-fall tests to emphasise the actual behaviour of structures under realistic explosive attacks. Finally, the blast tests also indicated the limitations of some simplified dynamic assessment methods when applying the single column removal assumption. |
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School of Civil and Environmental Engineering |
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School of Civil and Environmental Engineering Anh Tuan Pham Brenneis, Christian Roller, Christoph Tan, Kang Hai |
format |
Article |
author |
Anh Tuan Pham Brenneis, Christian Roller, Christoph Tan, Kang Hai |
author_sort |
Anh Tuan Pham |
title |
Blast-induced dynamic responses of reinforced concrete structures under progressive collapse |
title_short |
Blast-induced dynamic responses of reinforced concrete structures under progressive collapse |
title_full |
Blast-induced dynamic responses of reinforced concrete structures under progressive collapse |
title_fullStr |
Blast-induced dynamic responses of reinforced concrete structures under progressive collapse |
title_full_unstemmed |
Blast-induced dynamic responses of reinforced concrete structures under progressive collapse |
title_sort |
blast-induced dynamic responses of reinforced concrete structures under progressive collapse |
publishDate |
2023 |
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https://hdl.handle.net/10356/164046 |
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1754611261486661632 |