Stainless steel built-up section stub columns: testing, numerical modelling and design
This paper presents experimental and numerical investigations into the cross-sectional compressive behaviour and resistances of stainless steel built-up section stub columns. An experimental programme was firstly conducted on six built-up (open) I-sections and seven built-up (closed) tubular section...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/173261 |
| _version_ | 1811693872298852352 |
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| author | Jiang, Ke Zhao, Ou |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Jiang, Ke Zhao, Ou |
| author_sort | Jiang, Ke |
| collection | NTU |
| description | This paper presents experimental and numerical investigations into the cross-sectional compressive behaviour and resistances of stainless steel built-up section stub columns. An experimental programme was firstly conducted on six built-up (open) I-sections and seven built-up (closed) tubular sections, with each composed of two identical press-braked stainless steel channel sections assembled by self-tapping screws, and included tensile coupon tests, initial local geometric imperfection measurements and twenty stub column tests. The experimental programme was followed by a numerical modelling programme, where finite element models were developed and validated against test results and then used to conduct parametric studies, aiming at investigating the effect of screw spacings and generating further numerical data over a wide range of cross-section dimensions. For the design of a stainless steel built-up section stub column, the current European code and American specification treat it as two individual channel section members and adopt effective width methods for calculating the cross-section compression resistance of each channel section member. Both design codes were found to result in many unsafe failure load predictions for stainless steel built-up I-section stub columns but conservative failure load predictions for stainless steel built-up tubular section stub columns. Finally, revised codified design rules were proposed by treating each built-up section as a whole and using an equivalent thickness of the overlapped plate elements, and shown to provide accurate, consistent and safe cross-section compression predictions for stainless steel built-up section stub columns. |
| first_indexed | 2024-10-01T06:58:35Z |
| format | Journal Article |
| id | ntu-10356/173261 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:58:35Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1732612024-01-22T05:58:38Z Stainless steel built-up section stub columns: testing, numerical modelling and design Jiang, Ke Zhao, Ou School of Civil and Environmental Engineering Engineering::Civil engineering Built-Up Tubular Section Effective Width Method This paper presents experimental and numerical investigations into the cross-sectional compressive behaviour and resistances of stainless steel built-up section stub columns. An experimental programme was firstly conducted on six built-up (open) I-sections and seven built-up (closed) tubular sections, with each composed of two identical press-braked stainless steel channel sections assembled by self-tapping screws, and included tensile coupon tests, initial local geometric imperfection measurements and twenty stub column tests. The experimental programme was followed by a numerical modelling programme, where finite element models were developed and validated against test results and then used to conduct parametric studies, aiming at investigating the effect of screw spacings and generating further numerical data over a wide range of cross-section dimensions. For the design of a stainless steel built-up section stub column, the current European code and American specification treat it as two individual channel section members and adopt effective width methods for calculating the cross-section compression resistance of each channel section member. Both design codes were found to result in many unsafe failure load predictions for stainless steel built-up I-section stub columns but conservative failure load predictions for stainless steel built-up tubular section stub columns. Finally, revised codified design rules were proposed by treating each built-up section as a whole and using an equivalent thickness of the overlapped plate elements, and shown to provide accurate, consistent and safe cross-section compression predictions for stainless steel built-up section stub columns. The research work presented in this paper receives financial supports from the Regency Steel Asia Endowment Fund (Award Number: 03INS001251C120). 2024-01-22T05:58:38Z 2024-01-22T05:58:38Z 2023 Journal Article Jiang, K. & Zhao, O. (2023). Stainless steel built-up section stub columns: testing, numerical modelling and design. Thin-Walled Structures, 191, 111070-. https://dx.doi.org/10.1016/j.tws.2023.111070 0263-8231 https://hdl.handle.net/10356/173261 10.1016/j.tws.2023.111070 2-s2.0-85172451071 191 111070 en 03INS001251C120 Thin-Walled Structures © 2023 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Built-Up Tubular Section Effective Width Method Jiang, Ke Zhao, Ou Stainless steel built-up section stub columns: testing, numerical modelling and design |
| title | Stainless steel built-up section stub columns: testing, numerical modelling and design |
| title_full | Stainless steel built-up section stub columns: testing, numerical modelling and design |
| title_fullStr | Stainless steel built-up section stub columns: testing, numerical modelling and design |
| title_full_unstemmed | Stainless steel built-up section stub columns: testing, numerical modelling and design |
| title_short | Stainless steel built-up section stub columns: testing, numerical modelling and design |
| title_sort | stainless steel built up section stub columns testing numerical modelling and design |
| topic | Engineering::Civil engineering Built-Up Tubular Section Effective Width Method |
| url | https://hdl.handle.net/10356/173261 |
| work_keys_str_mv | AT jiangke stainlesssteelbuiltupsectionstubcolumnstestingnumericalmodellinganddesign AT zhaoou stainlesssteelbuiltupsectionstubcolumnstestingnumericalmodellinganddesign |