江西水利电力大学学报2026，Vol.45Issue(4)：81-89,9.
腹板开孔冷弯型钢基本构件稳定承载力设计方法与可靠度分析
Design method and reliability analysis of web-opening cold-formed steel members
摘要
Abstract
Based on 502 sets of bearing capacity test data on web-opening lipped channel sections,the proposed bearing ca-pacity design method for web-opening cold-formed steel members was adopted to conduct calculation model uncertainty anal-ysis.Meanwhile,statistical analysis was carried out on the material strength uncertainty and geometric property uncertainty of cold-formed thin-walled lipped channel steels with different grades including Q235,Q355,S280,S350 and S550.On this ba-sis,a systematic resistance uncertainty analysis was conducted.Furthermore,according to the resistance partial factors speci-fied in current codes,the improved first-order second-moment method was used to calculate and evaluate the reliability indi-ces of axially compressed,bending and eccentrically compressed members under different load combinations.The results show that under different load cases,the reliability indices of members calculated with the proposed simplified bearing ca-pacity design method for basic web-opening cold-formed steel members combined with the resistance partial factors specified in existing codes all meet the requirements of target reliability.The result indicates that the proposed method is reasonable and can be applied to the bearing capacity design of basic web-opening cold-formed steel members.关键词
冷弯薄壁卷边槽钢/腹板开孔/稳定/有效宽度法/设计可靠度分析Key words
cold-formed thin-walled steel with lipped channel section/web opening/stability/effective width method/design reliability analysis分类
建筑与水利引用本文复制引用
姚行友,陈飞亚,郭彦利,刘炎,左文斌..腹板开孔冷弯型钢基本构件稳定承载力设计方法与可靠度分析[J].江西水利电力大学学报,2026,45(4):81-89,9.基金项目
江西省自然科学基金项目(20242BAB26074,20252BAC240361,20242BAB20137) （20242BAB26074,20252BAC240361,20242BAB20137）
国家自然科学基金项目(51868049) （51868049）
