Structural behaviour and resistances of high strength concrete-filled stainless steel tube (HCFSST) beam-columns

This paper reports experimental and numerical investigations into the structural behaviour and resistances of high strength concrete-filled stainless steel tube (HCFSST) beam-columns under combined compression and bending. An experimental investigation was conducted on sixteen HCFSST beam-columns sp...

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Main Authors: Zhong, Yukai, Liu, Airong, Fu, Jiyang, Zhao, Ou
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2024
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Online Access:https://hdl.handle.net/10356/173237
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1732372024-01-22T01:01:06Z Structural behaviour and resistances of high strength concrete-filled stainless steel tube (HCFSST) beam-columns Zhong, Yukai Liu, Airong Fu, Jiyang Zhao, Ou School of Civil and Environmental Engineering Engineering::Civil engineering Beam-Column Tests Combined Compression and Bending This paper reports experimental and numerical investigations into the structural behaviour and resistances of high strength concrete-filled stainless steel tube (HCFSST) beam-columns under combined compression and bending. An experimental investigation was conducted on sixteen HCFSST beam-columns specimens fabricated from stainless steel tubes with two cross-section sizes and high strength concretes with four material grades, and included concrete cylinder tests, tensile coupon tests, initial global geometric imperfection measurements and eccentric compression tests. The test setups and procedures were fully reported and the experimental observations were discussed and analysed in detail. It was found that the plane cross-section assumption was valid for eccentrically loaded HCFSST sections and the lateral deflection distribution patterns for HCFSST beam-columns were approximately half-sine wave shapes. The test results were used in a subsequent numerical investigation for the validation of finite element models, which were then employed to conduct parametric studies to generate additional numerical data over a wide range of cross-section dimensions, member lengths and loading combinations. Based on the experimental and numerical results, the relevant design rules, as set out in the European code, American specification and Australian/New Zealand standard, were evaluated for their applicability to HCFSST beam-columns. The evaluation results revealed that the European code provided accurate but scattered failure load predictions when used for HCFSST beam-columns, while the American specification and Australian/New Zealand standard resulted in conservative and scattered failure load predictions. Ministry of Education (MOE) The present research work is financially supported by the Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 Grant (Award Number: RG122/21). 2024-01-22T01:01:06Z 2024-01-22T01:01:06Z 2024 Journal Article Zhong, Y., Liu, A., Fu, J. & Zhao, O. (2024). Structural behaviour and resistances of high strength concrete-filled stainless steel tube (HCFSST) beam-columns. Engineering Structures, 301, 117273-. https://dx.doi.org/10.1016/j.engstruct.2023.117273 0141-0296 https://hdl.handle.net/10356/173237 10.1016/j.engstruct.2023.117273 2-s2.0-85180483317 301 117273 en RG122/21 Engineering Structures © 2023 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
Beam-Column Tests
Combined Compression and Bending
spellingShingle Engineering::Civil engineering
Beam-Column Tests
Combined Compression and Bending
Zhong, Yukai
Liu, Airong
Fu, Jiyang
Zhao, Ou
Structural behaviour and resistances of high strength concrete-filled stainless steel tube (HCFSST) beam-columns
description This paper reports experimental and numerical investigations into the structural behaviour and resistances of high strength concrete-filled stainless steel tube (HCFSST) beam-columns under combined compression and bending. An experimental investigation was conducted on sixteen HCFSST beam-columns specimens fabricated from stainless steel tubes with two cross-section sizes and high strength concretes with four material grades, and included concrete cylinder tests, tensile coupon tests, initial global geometric imperfection measurements and eccentric compression tests. The test setups and procedures were fully reported and the experimental observations were discussed and analysed in detail. It was found that the plane cross-section assumption was valid for eccentrically loaded HCFSST sections and the lateral deflection distribution patterns for HCFSST beam-columns were approximately half-sine wave shapes. The test results were used in a subsequent numerical investigation for the validation of finite element models, which were then employed to conduct parametric studies to generate additional numerical data over a wide range of cross-section dimensions, member lengths and loading combinations. Based on the experimental and numerical results, the relevant design rules, as set out in the European code, American specification and Australian/New Zealand standard, were evaluated for their applicability to HCFSST beam-columns. The evaluation results revealed that the European code provided accurate but scattered failure load predictions when used for HCFSST beam-columns, while the American specification and Australian/New Zealand standard resulted in conservative and scattered failure load predictions.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Zhong, Yukai
Liu, Airong
Fu, Jiyang
Zhao, Ou
format Article
author Zhong, Yukai
Liu, Airong
Fu, Jiyang
Zhao, Ou
author_sort Zhong, Yukai
title Structural behaviour and resistances of high strength concrete-filled stainless steel tube (HCFSST) beam-columns
title_short Structural behaviour and resistances of high strength concrete-filled stainless steel tube (HCFSST) beam-columns
title_full Structural behaviour and resistances of high strength concrete-filled stainless steel tube (HCFSST) beam-columns
title_fullStr Structural behaviour and resistances of high strength concrete-filled stainless steel tube (HCFSST) beam-columns
title_full_unstemmed Structural behaviour and resistances of high strength concrete-filled stainless steel tube (HCFSST) beam-columns
title_sort structural behaviour and resistances of high strength concrete-filled stainless steel tube (hcfsst) beam-columns
publishDate 2024
url https://hdl.handle.net/10356/173237
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