翼緣加勁的復(fù)雜卷邊C形構(gòu)件局部穩(wěn)定性研究

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【中圖分類號(hào)】：TU392.1 【文獻(xiàn)標(biāo)志碼】：A 【文章編號(hào)】：1008-3197（2025）03-63-04

【DOI編碼】: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

冷彎薄壁構(gòu)件板件厚度較小、構(gòu)件寬厚比較大，且大部分為開口截面，因此在受到壓應(yīng)力時(shí)更容易屈曲失穩(wěn)；特別是隨著冷彎薄壁型鋼構(gòu)件的強(qiáng)度越來越高、板厚越來越小、截面形式越來越復(fù)雜，穩(wěn)定性問題在冷彎薄壁型鋼中顯得尤為重要[2-4]。（剩余6276字）