Structural behaviour and design of press-braked S690 high strength steel angle section long columns
A testing and numerical modelling programme has been conducted to investigate the flexural buckling behaviour and resistance of press-braked S690 high strength steel angle section long columns. The testing programme adopted two press-braked S690 high strength steel equal-leg angle sections and inclu...
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/170367 |
| _version_ | 1811680094838587392 |
|---|---|
| author | Zhang, Lulu Zhong, Yukai Zhao, Ou |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Zhang, Lulu Zhong, Yukai Zhao, Ou |
| author_sort | Zhang, Lulu |
| collection | NTU |
| description | A testing and numerical modelling programme has been conducted to investigate the flexural buckling behaviour and resistance of press-braked S690 high strength steel angle section long columns. The testing programme adopted two press-braked S690 high strength steel equal-leg angle sections and included initial geometric imperfection measurements as well as twelve pin-ended column tests. The testing programme was accompanied by a numerical modelling programme, including a validation study, where finite element models were developed and validated against the test results, and a parametric study, where the validated finite element models were used to generate further numerical data over a wide range of cross-section dimensions and member effective lengths. The obtained test and numerical data were used to evaluate the existing design rules for press-braked S690 high strength steel angle section long columns, as specified in the North American specification, Australian/New Zealand standard and European code. The evaluation results revealed that the North American specification and Australian/New Zealand standard result in a high level of design accuracy and consistency, while the Eurocode leads to excessively conservative and scattered failure load predictions. Finally, a new design approach was proposed and shown to offer more accurate and consistent failure load predictions, with less calculation works, than the design codes. |
| first_indexed | 2024-10-01T03:19:35Z |
| format | Journal Article |
| id | ntu-10356/170367 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:19:35Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1703672023-09-11T00:58:01Z Structural behaviour and design of press-braked S690 high strength steel angle section long columns Zhang, Lulu Zhong, Yukai Zhao, Ou School of Civil and Environmental Engineering Engineering::Civil engineering Design Codes Flexural Buckling A testing and numerical modelling programme has been conducted to investigate the flexural buckling behaviour and resistance of press-braked S690 high strength steel angle section long columns. The testing programme adopted two press-braked S690 high strength steel equal-leg angle sections and included initial geometric imperfection measurements as well as twelve pin-ended column tests. The testing programme was accompanied by a numerical modelling programme, including a validation study, where finite element models were developed and validated against the test results, and a parametric study, where the validated finite element models were used to generate further numerical data over a wide range of cross-section dimensions and member effective lengths. The obtained test and numerical data were used to evaluate the existing design rules for press-braked S690 high strength steel angle section long columns, as specified in the North American specification, Australian/New Zealand standard and European code. The evaluation results revealed that the North American specification and Australian/New Zealand standard result in a high level of design accuracy and consistency, while the Eurocode leads to excessively conservative and scattered failure load predictions. Finally, a new design approach was proposed and shown to offer more accurate and consistent failure load predictions, with less calculation works, than the design codes. Ministry of Education (MOE) The research work presented in this paper receives financial supports from the Regency Steel Asia Endowment Fund (Award Number: 03INS001251C120) and Singapore Ministry of Education Academic Research Fund (AcRF) Tier 1 Grant (Award Number: RG142/20). 2023-09-11T00:58:01Z 2023-09-11T00:58:01Z 2023 Journal Article Zhang, L., Zhong, Y. & Zhao, O. (2023). Structural behaviour and design of press-braked S690 high strength steel angle section long columns. Thin-Walled Structures, 182(B), 110251-. https://dx.doi.org/10.1016/j.tws.2022.110251 0263-8231 https://hdl.handle.net/10356/170367 10.1016/j.tws.2022.110251 2-s2.0-85140994420 B 182 110251 en RG142/20 Thin-Walled Structures © 2022 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Design Codes Flexural Buckling Zhang, Lulu Zhong, Yukai Zhao, Ou Structural behaviour and design of press-braked S690 high strength steel angle section long columns |
| title | Structural behaviour and design of press-braked S690 high strength steel angle section long columns |
| title_full | Structural behaviour and design of press-braked S690 high strength steel angle section long columns |
| title_fullStr | Structural behaviour and design of press-braked S690 high strength steel angle section long columns |
| title_full_unstemmed | Structural behaviour and design of press-braked S690 high strength steel angle section long columns |
| title_short | Structural behaviour and design of press-braked S690 high strength steel angle section long columns |
| title_sort | structural behaviour and design of press braked s690 high strength steel angle section long columns |
| topic | Engineering::Civil engineering Design Codes Flexural Buckling |
| url | https://hdl.handle.net/10356/170367 |
| work_keys_str_mv | AT zhanglulu structuralbehaviouranddesignofpressbrakeds690highstrengthsteelanglesectionlongcolumns AT zhongyukai structuralbehaviouranddesignofpressbrakeds690highstrengthsteelanglesectionlongcolumns AT zhaoou structuralbehaviouranddesignofpressbrakeds690highstrengthsteelanglesectionlongcolumns |