翼缘加劲的复杂卷边C形构件局部稳定性研究

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【中图分类号】：TU392.1 【文献标志码】：A 【文章编号】：1008-3197（2025）03-63-04

【DOI编码】:10.3969/j.issn.1008-3197.2025.03.015

Research on Local Stability of Complex Lipped C-section Members with Flange Stiffeners

FAN Dongchao

(Xinzhida Consulting Group Co.Ltd.,Wuhan 430o90,China）

【Abstract】:The finite element software ABAQUS wasused tosimulate cold-formed thin-walled C-section members with complex lips and complex lipped members with flange stiffners under pure bending.The failure modes and flexural bearing capacities of these members under pure bending were simulated.The relationships between the failure modes，flexural bearing capacities and cross-sectional geometric parameters were analyzed，and theinfluence laws of cross-sectional parameters on thefailure modesand flexural bearing capacities of the members were obtained.Byanalyzing the flexural bearing capacities of themembersbeforeand after stiening,the effect of stiffeners on improving the bearing capacity of the members was determined.

【Keywords】:distortionalbuckling;flangestfening;complexlipping;cold-formedthin-walledC-sectionmember;flexural bearing capacity;failure mode

冷弯薄壁构件板件厚度较小、构件宽厚比较大，且大部分为开口截面，因此在受到压应力时更容易屈曲失稳；特别是随着冷弯薄壁型钢构件的强度越来越高、板厚越来越小、截面形式越来越复杂，稳定性问题在冷弯薄壁型钢中显得尤为重要[2-4]。（剩余6276字）