纵向V型肋卷边C形不锈钢梁抗弯承载力试验研究  

Experimental Study on Ultimate Flexural Capacity of Lipped C-shaped Stainless Steel Beams with Longitudinal V-shaped Stiffener

作　　者：裴玉磊 叶彩凤 陶忠[1,2] 皇甫双娥 燕钊[1,2] Pei Yulei;Ye Caifeng;Tao Zhong;Huangfu Shuange;Yan Zhao(Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming 650500,China;Yunnan Earthquake Engineering and Technology Research Center,Kunming 650503,China)

机构地区：[1]昆明理工大学建筑工程学院,昆明650500 [2]云南省抗震工程技术研究中心,昆明650503

出　　处：《科技通报》2024年第1期84-90,共7页Bulletin of Science and Technology

基　　金：云南省科技厅重点研发计划(202003AC100001)。

摘　　要：为研究在冷弯薄壁C形不锈钢梁腹板增设纵向加劲肋后对其极限抗弯承载力的影响,本文考虑腹板高度、高宽比以及加劲肋尺寸的不同,进行4组试件的对照试验研究。结果表明:对卷边C形不锈钢梁腹板进行加肋能良好地抑制腹板鼓曲,有效提高其极限抗弯承载力;加大加劲肋的尺寸会略微提高其极限抗弯承载力,但刚度略有降低;增加卷边C形不锈钢梁的腹板高度可有效提升其极限抗弯承载力和抵抗变形的能力。To investigate the influence of longitudinal stiffening ribs on the web of cold-formed thin-walled C-shaped stainless steel beams on their ultimate flexural capacity,four sets of specimens were examined under controlled testing conditions,taking into account variations in web height,height-to-width ratios,and rib sizes.The findings demonstrate that ribbing the web of the lipped C-shaped stainless steel beam can effectively increase the ultimate flexural capacity by suppressing web bulging.Increasing the size of the stiffening ribs will slightly enhance the ultimate flexural capacity but also slightly reduce the stiffness.Increasing the web height of lipped C-shaped stainless steel beam can significantly improve the ultimate flexural capacity and resistance to deformation.

关 键 词：不锈钢 V型加劲肋 冷弯薄壁卷边C形钢梁 极限抗弯承载力 

分 类 号：TU391[建筑科学—结构工程]