翼缘加劲的冷弯薄壁型钢受弯构件弹性屈曲应力研究  

STUDY ON THE ELASTIC BUCKLING STRESS OF COLD-FORMED STEEL FLEXURAL MEMBERS WITH STIFFENERS IN THE FLANGE

作　　者：于欣永[1] 王春刚[1] 贾连光[1] 马平[1] 

机构地区：[1]沈阳建筑大学土木工程学院,沈阳110168

出　　处：《工程力学》2013年第B06期68-71,共4页Engineering Mechanics

基　　金：国家自然科学基金项目(51008200);辽宁省高等学校优秀人才支持计划项目(LJQ2011059);沈阳市科技计划项目(F12-277-1-31)

摘　　要：利用有限条软件CUFSM对普通卷边槽钢和在受压翼缘不同位置设置加劲肋的普通卷边槽钢受弯构件进行了弹性屈曲应力的计算。对计算结果进行比较分析后发现:在受压翼缘的不同位置增设加劲肋对普通卷边槽钢受弯构件弹性局部屈曲应力平均提高了53.15%,而弹性畸变屈曲应力平均提高了7.39%,其中偏向卷边一侧设置加劲肋对构件弹性畸变屈曲应力的提高效果不明显。总体而言,在受压翼缘中间设置加劲肋对提高构件的稳定性能效果最好。The finite strip program of CUFSM was used to calculate the elastic buckling stress of channel flexural members with ordinary edge stiffeners and channel flexural members with stiffeners in the compression flange. It is found that adding stiffening ribs in different positions of the compression flange will make the average of elastic local buckling stress of channels with ordinary edge stiffeners increase 53.09%, and make the average of elastic distortional buckling stress increase 7.39%. But the elastic distortional buckling stress of the flexural members increased little when the stiffening ribs in the flange near the edge stiffeners. Overall, adding stiffening ribs in the middle of the compression flange is the best plan to increase the stability behavior of the flexural members.

关 键 词：翼缘 加劲肋 受弯构件 弹性屈曲应力 有限条 

分 类 号：TU392.1[建筑科学—结构工程]