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Post-buckling Strength of Welded Steel I-Girders with Corrugated Webs
International Journal of Steel Structures ( IF 1.1 ) Pub Date : 2021-03-18 , DOI: 10.1007/s13296-021-00477-y
Xuqun Lin , Harry Far

Steel I-section-plate girders with corrugated webs have been used worldwide as they provide more stability and light beam features in practical design. It is known from previous investigations that due to having numerous favourable properties, the corrugated-web beams have been used in different areas of structural engineering. Considering the raising popularity of using CWBs in steel design, some practical aspects of CWBs need to be investigated further, in which post-buckling strength is one of the most critical strengths that should be precisely estimated. To fulfill this requirement regarding the post-bucking strength determination for structural designers community, a numerical investigation has been conducted in this study to determine the moment capacity reduction factors for steel I girders with corrugated-web profile and to compare reduction factor values extracted from EN 1993-1-5 (Design of steel structures part 1–5: Plated structural elements, Eurocode 3, Brussels, 2006), AS4100 (Steel structures, Standard Australia, Sydney, 1998), and finite element analysis. Theory of Ultimate Limit State design has been adopted in accordance with AS4100 (1998) along with considering geometric and material non-linearity in the numerical analyses in SAP2000 software. Eventually, the results of the parametric study have been compared and discussed leading to presenting practical recommendations on the design of CWBs for bending strength.



中文翻译:

波纹腹板焊接钢工字梁的屈曲后强度

带有波纹腹板的钢制I型截面板梁由于在实际设计中具有更高的稳定性和光束特征而在世界范围内得到使用。从先前的研究中知道,由于具有许多有利的特性,波纹腹板梁已用于结构工程的不同领域。考虑到在钢结构设计中使用CWB的日益普及,需要进一步研究CWB的一些实际方面,其中屈曲后强度是应精确估算的最关键的强度之一。为了满足有关结构设计师社区确定屈曲后强度的要求,在这项研究中进行了数值研究,以确定具有波纹腹板轮廓的I型钢梁的弯矩承载力减小因子,并比较从EN 1993-1-5(钢结构设计第1-5部分:镀层)中提取的减小因子值结构元素,欧洲规范3,布鲁塞尔,2006年),AS4100(钢结构,澳大利亚标准协会,悉尼,1998年)和有限元分析。最终极限状态设计理论已按照AS4100(1998)的要求采用,并在SAP2000软件的数值分析中考虑了几何和材料非线性。最终,对参数研究的结果进行了比较和讨论,从而提出了针对弯曲强度的CWBs设计的实用建议。镀层结构元素,欧洲规范3,布鲁塞尔,2006年),AS4100(钢结构,澳大利亚标准协会,悉尼,1998年)和有限元分析。最终极限状态设计理论已按照AS4100(1998)的要求采用,并在SAP2000软件的数值分析中考虑了几何和材料非线性。最终,对参数研究的结果进行了比较和讨论,从而提出了针对弯曲强度的CWBs设计的实用建议。镀层结构元素,欧洲规范3,布鲁塞尔,2006年),AS4100(钢结构,澳大利亚标准协会,悉尼,1998年)和有限元分析。最终极限状态设计理论已按照AS4100(1998)的要求采用,并在SAP2000软件的数值分析中考虑了几何和材料非线性。最终,对参数研究的结果进行了比较和讨论,从而提出了针对弯曲强度的CWBs设计的实用建议。

更新日期:2021-03-18
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