Development of compressive arch action in reinforced concrete sub-assemblages

Compressive arch action (CAA) of reinforced concrete (RC) members is a beneficial structural mechanism to mitigate progressive collapse of RC framed structures without any additional cost. CAA relies on the restraints at the ends of RC beams that are provided by surrounding structures as well as the...

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Main Authors: Yu, Jun, Tan, Kang Hai
Other Authors: School of Civil and Environmental Engineering
Format: Conference or Workshop Item
Language:English
Published: 2013
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Online Access:https://hdl.handle.net/10356/95268
http://hdl.handle.net/10220/8948
http://www.polyu.edu.hk/fce/PLSE2012/
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-952682019-12-10T12:47:48Z Development of compressive arch action in reinforced concrete sub-assemblages Yu, Jun Tan, Kang Hai School of Civil and Environmental Engineering Conference on Performance-based and Life-cycle Structural Engineering (1st : 2012 : Hongkong, China) Protective Technology Research Centre DRNTU::Engineering::Civil engineering::Structures and design Compressive arch action (CAA) of reinforced concrete (RC) members is a beneficial structural mechanism to mitigate progressive collapse of RC framed structures without any additional cost. CAA relies on the restraints at the ends of RC beams that are provided by surrounding structures as well as the material and geometric properties of RC beams. An analytical model is utilized to perform detailed parametric investigation into the effects of imperfect boundary conditions on the CAA capacities of sub-assemblages. The results indicate that to mobilize CAA, adequate axial and rotational restraints must be provided, but when restraint stiffnesses are respectively greater than the corresponding stiffness of restrained beams, the effects of restraint stiffnesses on CAA capacity are negligible. Then, the effects of span-to-depth ratios and mechanical reinforcement ratios of beams on enhancement of structural resistance due to CAA are investigated. The results suggest that a lower mechanical reinforcement ratio and a lower span-to-depth ratio will give rise to significant enhancement of structural resistance contributed by CAA. 2013-01-09T01:46:03Z 2019-12-06T19:11:36Z 2013-01-09T01:46:03Z 2019-12-06T19:11:36Z 2012 2012 Conference Paper Yu, J., & Tan, K. H. (2012). Development of compressive arch action in reinforced concrete sub-assemblages. First International Conference on Performance-based and Life-cycle Structural Engineering, 615-622. https://hdl.handle.net/10356/95268 http://hdl.handle.net/10220/8948 http://www.polyu.edu.hk/fce/PLSE2012/ en © 2012 Faculty of Construction and Environment (FCE) of The Hong Kong Polytechnic University. 8 p.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Civil engineering::Structures and design
spellingShingle DRNTU::Engineering::Civil engineering::Structures and design
Yu, Jun
Tan, Kang Hai
Development of compressive arch action in reinforced concrete sub-assemblages
description Compressive arch action (CAA) of reinforced concrete (RC) members is a beneficial structural mechanism to mitigate progressive collapse of RC framed structures without any additional cost. CAA relies on the restraints at the ends of RC beams that are provided by surrounding structures as well as the material and geometric properties of RC beams. An analytical model is utilized to perform detailed parametric investigation into the effects of imperfect boundary conditions on the CAA capacities of sub-assemblages. The results indicate that to mobilize CAA, adequate axial and rotational restraints must be provided, but when restraint stiffnesses are respectively greater than the corresponding stiffness of restrained beams, the effects of restraint stiffnesses on CAA capacity are negligible. Then, the effects of span-to-depth ratios and mechanical reinforcement ratios of beams on enhancement of structural resistance due to CAA are investigated. The results suggest that a lower mechanical reinforcement ratio and a lower span-to-depth ratio will give rise to significant enhancement of structural resistance contributed by CAA.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Yu, Jun
Tan, Kang Hai
format Conference or Workshop Item
author Yu, Jun
Tan, Kang Hai
author_sort Yu, Jun
title Development of compressive arch action in reinforced concrete sub-assemblages
title_short Development of compressive arch action in reinforced concrete sub-assemblages
title_full Development of compressive arch action in reinforced concrete sub-assemblages
title_fullStr Development of compressive arch action in reinforced concrete sub-assemblages
title_full_unstemmed Development of compressive arch action in reinforced concrete sub-assemblages
title_sort development of compressive arch action in reinforced concrete sub-assemblages
publishDate 2013
url https://hdl.handle.net/10356/95268
http://hdl.handle.net/10220/8948
http://www.polyu.edu.hk/fce/PLSE2012/
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