S960 ultra-high strength steel slender welded I-section beam-columns: testing, numerical modelling and design
This paper presents experimental and numerical investigations of the buckling behaviour and resistance of S960 ultra-high strength steel slender welded I-section beam–columns under combined compression and minor-axis bending moment. An experimental programme, including initial geometric imperfection...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/161918 |
| _version_ | 1826112607577178112 |
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| author | Su, Andi Jiang, Ke Wang, Mingda Zhao, Ou |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Su, Andi Jiang, Ke Wang, Mingda Zhao, Ou |
| author_sort | Su, Andi |
| collection | NTU |
| description | This paper presents experimental and numerical investigations of the buckling behaviour and resistance of S960 ultra-high strength steel slender welded I-section beam–columns under combined compression and minor-axis bending moment. An experimental programme, including initial geometric imperfection measurements and eight beam–column tests, was firstly conducted. The test procedures, setups and results were fully reported. Following the experimental programme, a numerical modelling programme was carried out, with finite element models initially developed and validated against the test results and then employed to conduct parametric studies to generate further numerical data. On the basis of the test and numerical data, the relevant design interaction curves, as provided in the European code, Australian standard and American specification, were evaluated for their applicability to S960 ultra-high strength steel slender welded I-section beam–columns. The evaluation results revealed that all three codified design interaction curves lead to conservative resistance predictions, mainly owing to the conservative end points (i.e. column buckling strength and cross-section minor-axis bending resistance). Finally, a revised Eurocode design interaction curve, with improved compression end point determined from more accurate column buckling curve and bending end point determined from the direct strength method, was finally proposed, and shown to result in more accurate resistance predictions for S960 ultra-high strength steel slender welded I-section beam–columns than the codified design interaction curves. |
| first_indexed | 2024-10-01T03:09:50Z |
| format | Journal Article |
| id | ntu-10356/161918 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:09:50Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1619182022-09-26T05:44:48Z S960 ultra-high strength steel slender welded I-section beam-columns: testing, numerical modelling and design Su, Andi Jiang, Ke Wang, Mingda Zhao, Ou School of Civil and Environmental Engineering Engineering::Civil engineering Beam–Column Tests Buckling Behaviour This paper presents experimental and numerical investigations of the buckling behaviour and resistance of S960 ultra-high strength steel slender welded I-section beam–columns under combined compression and minor-axis bending moment. An experimental programme, including initial geometric imperfection measurements and eight beam–column tests, was firstly conducted. The test procedures, setups and results were fully reported. Following the experimental programme, a numerical modelling programme was carried out, with finite element models initially developed and validated against the test results and then employed to conduct parametric studies to generate further numerical data. On the basis of the test and numerical data, the relevant design interaction curves, as provided in the European code, Australian standard and American specification, were evaluated for their applicability to S960 ultra-high strength steel slender welded I-section beam–columns. The evaluation results revealed that all three codified design interaction curves lead to conservative resistance predictions, mainly owing to the conservative end points (i.e. column buckling strength and cross-section minor-axis bending resistance). Finally, a revised Eurocode design interaction curve, with improved compression end point determined from more accurate column buckling curve and bending end point determined from the direct strength method, was finally proposed, and shown to result in more accurate resistance predictions for S960 ultra-high strength steel slender welded I-section beam–columns than the codified design interaction curves. The research receives financial support from the Regency Steel Asia Fund, Singapore (Award Number: 03INS001251C120). 2022-09-26T05:44:48Z 2022-09-26T05:44:48Z 2022 Journal Article Su, A., Jiang, K., Wang, M. & Zhao, O. (2022). S960 ultra-high strength steel slender welded I-section beam-columns: testing, numerical modelling and design. Thin-Walled Structures, 177, 109452-. https://dx.doi.org/10.1016/j.tws.2022.109452 0263-8231 https://hdl.handle.net/10356/161918 10.1016/j.tws.2022.109452 2-s2.0-85131414917 177 109452 en 03INS001251C120 Thin-Walled Structures © 2022 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Beam–Column Tests Buckling Behaviour Su, Andi Jiang, Ke Wang, Mingda Zhao, Ou S960 ultra-high strength steel slender welded I-section beam-columns: testing, numerical modelling and design |
| title | S960 ultra-high strength steel slender welded I-section beam-columns: testing, numerical modelling and design |
| title_full | S960 ultra-high strength steel slender welded I-section beam-columns: testing, numerical modelling and design |
| title_fullStr | S960 ultra-high strength steel slender welded I-section beam-columns: testing, numerical modelling and design |
| title_full_unstemmed | S960 ultra-high strength steel slender welded I-section beam-columns: testing, numerical modelling and design |
| title_short | S960 ultra-high strength steel slender welded I-section beam-columns: testing, numerical modelling and design |
| title_sort | s960 ultra high strength steel slender welded i section beam columns testing numerical modelling and design |
| topic | Engineering::Civil engineering Beam–Column Tests Buckling Behaviour |
| url | https://hdl.handle.net/10356/161918 |
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