Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/161918
Title: S960 ultra-high strength steel slender welded I-section beam-columns: testing, numerical modelling and design
Authors: Su, Andi
Jiang, Ke
Wang, Mingda
Zhao, Ou
Keywords: Engineering::Civil engineering
Issue Date: 2022
Source: 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
Project: 03INS001251C120
Journal: Thin-Walled Structures
Abstract: 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.
URI: https://hdl.handle.net/10356/161918
ISSN: 0263-8231
DOI: 10.1016/j.tws.2022.109452
Rights: © 2022 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CEE Journal Articles

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