Experimental and numerical investigations of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending

This paper reports experimental and numerical investigations into the behaviour and resistance of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending. Eccentric compression tests were conducted on twelve stub column specimens fabricated from au...

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Main Authors: Zhong, Yukai, Zhao, Ou, Young, Ben
其他作者: School of Civil and Environmental Engineering
格式: Article
語言:English
出版: 2022
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在線閱讀:https://hdl.handle.net/10356/163482
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spelling sg-ntu-dr.10356-1634822022-12-07T06:32:46Z Experimental and numerical investigations of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending Zhong, Yukai Zhao, Ou Young, Ben School of Civil and Environmental Engineering Engineering::Civil engineering Design Codes Eccentric Compression Tests This paper reports experimental and numerical investigations into the behaviour and resistance of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending. Eccentric compression tests were conducted on twelve stub column specimens fabricated from austenitic stainless steel tubes with two cross-section sizes and concretes with three recycled coarse aggregate replacement ratios (0%, 35% and 70%). The test results, including the failure loads, load–mid-height lateral deflection curves, evolution of neutral axis and confinement effect, were discussed in detail. The testing programme was followed by a numerical modelling programme, where finite element models were developed and validated against the test results and then used to perform parametric studies to generate further numerical data over a wide range of cross-section dimensions and loading combinations. Given that there are no existing design codes for recycled aggregate concrete–stainless steel composite structures, the relevant codified design rules for natural aggregate concrete filled-carbon steel tube stub columns under combined compression and bending, as set out in the European code, American specification and Australian/New Zealand standard, were evaluated for their applicability to recycled aggregate concrete filled-stainless steel tube stub columns, based on the test and numerical data. The evaluation results revealed that the European code and Australian/New Zealand standard generally provide an acceptable level of design accuracy, while the American specification yields unduly conservative failure load predictions. Ministry of Education (MOE) The present research work is financially supported by Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 Grant (Project Number: RG142/20). 2022-12-07T06:32:46Z 2022-12-07T06:32:46Z 2022 Journal Article Zhong, Y., Zhao, O. & Young, B. (2022). Experimental and numerical investigations of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending. Engineering Structures, 266, 114502-. https://dx.doi.org/10.1016/j.engstruct.2022.114502 0141-0296 https://hdl.handle.net/10356/163482 10.1016/j.engstruct.2022.114502 2-s2.0-85132747992 266 114502 en RG142/20 Engineering Structures © 2022 Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Civil engineering
Design Codes
Eccentric Compression Tests
spellingShingle Engineering::Civil engineering
Design Codes
Eccentric Compression Tests
Zhong, Yukai
Zhao, Ou
Young, Ben
Experimental and numerical investigations of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending
description This paper reports experimental and numerical investigations into the behaviour and resistance of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending. Eccentric compression tests were conducted on twelve stub column specimens fabricated from austenitic stainless steel tubes with two cross-section sizes and concretes with three recycled coarse aggregate replacement ratios (0%, 35% and 70%). The test results, including the failure loads, load–mid-height lateral deflection curves, evolution of neutral axis and confinement effect, were discussed in detail. The testing programme was followed by a numerical modelling programme, where finite element models were developed and validated against the test results and then used to perform parametric studies to generate further numerical data over a wide range of cross-section dimensions and loading combinations. Given that there are no existing design codes for recycled aggregate concrete–stainless steel composite structures, the relevant codified design rules for natural aggregate concrete filled-carbon steel tube stub columns under combined compression and bending, as set out in the European code, American specification and Australian/New Zealand standard, were evaluated for their applicability to recycled aggregate concrete filled-stainless steel tube stub columns, based on the test and numerical data. The evaluation results revealed that the European code and Australian/New Zealand standard generally provide an acceptable level of design accuracy, while the American specification yields unduly conservative failure load predictions.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Zhong, Yukai
Zhao, Ou
Young, Ben
format Article
author Zhong, Yukai
Zhao, Ou
Young, Ben
author_sort Zhong, Yukai
title Experimental and numerical investigations of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending
title_short Experimental and numerical investigations of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending
title_full Experimental and numerical investigations of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending
title_fullStr Experimental and numerical investigations of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending
title_full_unstemmed Experimental and numerical investigations of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending
title_sort experimental and numerical investigations of recycled aggregate concrete-filled stainless steel tube stub columns under combined compression and bending
publishDate 2022
url https://hdl.handle.net/10356/163482
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