Structural Behaviour of Precast Beam-Column Sub-Assemblages with Cast-In-Situ Engineered Cementitious Composites under Column Removal Scenarios

This paper presents an experimental study on the structural behaviour of precast beam-column sub-assemblages under column removal scenarios, in which conventional concrete and engineered cementitious composites (ECC) were used in the cast-in-situ concrete topping and the beam-column joint. The speci...

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Main Authors: Kang, Shao-Bo, Tan, Kang Hai, Yang, En-Hua, Ng, Kian Wee
Other Authors: School of Civil and Environmental Engineering
Format: Conference or Workshop Item
Language:English
Published: 2016
Subjects:
Online Access:https://hdl.handle.net/10356/80678
http://hdl.handle.net/10220/40571
http://www.cma.sg/events/5th-international-conference-on-design-and-analysis-of-protective-structures-daps2015.html
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-806782019-12-06T13:54:33Z Structural Behaviour of Precast Beam-Column Sub-Assemblages with Cast-In-Situ Engineered Cementitious Composites under Column Removal Scenarios Kang, Shao-Bo Tan, Kang Hai Yang, En-Hua Ng, Kian Wee School of Civil and Environmental Engineering International Conference on Design and Analysis of Protective Structures (DAPS) (5th:2015:Singapore) Column removal scenarios Beam-column sub-assemblages Engineered cementitious composites Compressive arch action Catenary action This paper presents an experimental study on the structural behaviour of precast beam-column sub-assemblages under column removal scenarios, in which conventional concrete and engineered cementitious composites (ECC) were used in the cast-in-situ concrete topping and the beam-column joint. The specimens were restrained by horizontal and vertical load cells and tested under quasi-static loading condition. Experimental results indicate that at the initial stage ECC and steel reinforcement sustained tensile stresses compatibly and multiple cracking was observed in the ECC topping. When the tensile strain capacity of ECC was exhausted, major cracks were formed in the plastic hinge region, whereas at other sections ECC remained intact to transfer tensile stresses across cracks. Compared to conventional concrete, ECC resulted in more severe localisation of rotations in a limited region due to its tension-stiffening behaviour. Conclusions are drawn that application of ECC to structural topping and beam-column joints did not significantly enhance structural resistance of sub-assemblages under column removal scenarios. However, the calculated pseudo-static resistance of ECC sub-assemblage is greater than that of concrete specimen due to better energy-absorption capacity of ECC. Accepted version 2016-05-25T07:16:55Z 2019-12-06T13:54:33Z 2016-05-25T07:16:55Z 2019-12-06T13:54:33Z 2015 2015 Conference Paper Kang, S.-B., Tan, K. H., Yang, E.-H., & Ng, K. W. (2015). Structural behaviour of precast beam-column sub-assemblages with cast-In-situ engineered cementitious composites under column removal scenarios. 5thInternational Conference on Design and Analysis of Protective Structures (DAPS2015), 1-9. https://hdl.handle.net/10356/80678 http://hdl.handle.net/10220/40571 http://www.cma.sg/events/5th-international-conference-on-design-and-analysis-of-protective-structures-daps2015.html 186329 en © 2015 The Author(s). This is the author created version of a work that has been peer reviewed and accepted for publication by International Conference on Design and Analysis of Protective Structures (DAPS), The Author(s). It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://www.cma.sg/events/5th-international-conference-on-design-and-analysis-of-protective-structures-daps2015.html]. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Column removal scenarios
Beam-column sub-assemblages
Engineered cementitious composites
Compressive arch action
Catenary action
spellingShingle Column removal scenarios
Beam-column sub-assemblages
Engineered cementitious composites
Compressive arch action
Catenary action
Kang, Shao-Bo
Tan, Kang Hai
Yang, En-Hua
Ng, Kian Wee
Structural Behaviour of Precast Beam-Column Sub-Assemblages with Cast-In-Situ Engineered Cementitious Composites under Column Removal Scenarios
description This paper presents an experimental study on the structural behaviour of precast beam-column sub-assemblages under column removal scenarios, in which conventional concrete and engineered cementitious composites (ECC) were used in the cast-in-situ concrete topping and the beam-column joint. The specimens were restrained by horizontal and vertical load cells and tested under quasi-static loading condition. Experimental results indicate that at the initial stage ECC and steel reinforcement sustained tensile stresses compatibly and multiple cracking was observed in the ECC topping. When the tensile strain capacity of ECC was exhausted, major cracks were formed in the plastic hinge region, whereas at other sections ECC remained intact to transfer tensile stresses across cracks. Compared to conventional concrete, ECC resulted in more severe localisation of rotations in a limited region due to its tension-stiffening behaviour. Conclusions are drawn that application of ECC to structural topping and beam-column joints did not significantly enhance structural resistance of sub-assemblages under column removal scenarios. However, the calculated pseudo-static resistance of ECC sub-assemblage is greater than that of concrete specimen due to better energy-absorption capacity of ECC.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Kang, Shao-Bo
Tan, Kang Hai
Yang, En-Hua
Ng, Kian Wee
format Conference or Workshop Item
author Kang, Shao-Bo
Tan, Kang Hai
Yang, En-Hua
Ng, Kian Wee
author_sort Kang, Shao-Bo
title Structural Behaviour of Precast Beam-Column Sub-Assemblages with Cast-In-Situ Engineered Cementitious Composites under Column Removal Scenarios
title_short Structural Behaviour of Precast Beam-Column Sub-Assemblages with Cast-In-Situ Engineered Cementitious Composites under Column Removal Scenarios
title_full Structural Behaviour of Precast Beam-Column Sub-Assemblages with Cast-In-Situ Engineered Cementitious Composites under Column Removal Scenarios
title_fullStr Structural Behaviour of Precast Beam-Column Sub-Assemblages with Cast-In-Situ Engineered Cementitious Composites under Column Removal Scenarios
title_full_unstemmed Structural Behaviour of Precast Beam-Column Sub-Assemblages with Cast-In-Situ Engineered Cementitious Composites under Column Removal Scenarios
title_sort structural behaviour of precast beam-column sub-assemblages with cast-in-situ engineered cementitious composites under column removal scenarios
publishDate 2016
url https://hdl.handle.net/10356/80678
http://hdl.handle.net/10220/40571
http://www.cma.sg/events/5th-international-conference-on-design-and-analysis-of-protective-structures-daps2015.html
_version_ 1681046873079545856