DISTORTIONAL BUCKLING PERFORMANCE STUDY ON FLEXURAL MEMBERS WITH UPRIGHT AND INCLINED EDGE STIFFENERS
-
摘要: 应用ANSYS有限元程序,分别对直卷边和斜卷边C形和Z形截面冷弯型钢受弯构件的畸变屈曲性能进行研究。对比发现,多数直卷边构件的抗弯承载力略高于斜卷边的,在相同截面参数条件下,C形和Z形截面的抗弯承载力相差很小。计算结果还与直接强度法进行了对比,结果发现,多数构件的计算结果高于直接强度法的结果。Abstract: The distortional buckling performance of cold-formed C and Z section flexural members with upright and inclined edge stiffeners has been studied by finite element program of ANSYS.The results show that most of the bending strength of members with upright edge stiffeners is slightly higher than that of members with inclined edge stiffeners.And the bending strength of C and Z section members almost the same when the section parameters are the same.Comparison of the computed results with the results of direct strength method shows that most of the computed results are higher than that of direct strength method.
-
Key words:
- flexural members /
- distortional buckling /
- bending strength /
- direct strength method
-
Hancock G J.Local. Distortional and Lateral Buckling of I-Beams[J].Journal of the Structural Division ASCE,1978,(11):1787-1798. [2] Hancock G J. Design of Cold-Formed Steel Structures[M].1998.44-45. [3] Nguyen N T B,Fung T C,Young B. Strength and Behaviour of Cold Formed Steel Z-Sections Subjected to Major Axis Bending[J].Journal of Structural Engineering,2006,(10):1632-1640.doi: 10.1061/(ASCE)0733-9445(2006)132:10(1632). [4] Yu C,Schafer B W. Distortional Buckling Tests on Cold-Formed Steel Beams[J].Journal of Structural Engineering,2006,(04):515-528. [5] Yah Jintang,Young Ben. Numerical Investigation of Channel Columns with Complex Stiffeners--Part I:Test Verification[J].Thin-Walled Structures,2004,(06):883-893.doi: 10.1016/j.tws.2003.12.002. [6] Yang Demao,Hancock G J. Compression Tests of High Strength Steel Channel Columns with Interaction Between Local and Distortional Buckling[J].Journal of Structural Engineering,2004,(12):1954-1963.doi: 10.1061/(ASCE)0733-9445(2004)130:12(1954). [7] 何保康,蒋路,姚行友. 高强冷弯薄壁型钢卷边槽形截面轴压柱畸变屈曲试验研究[J].建筑结构学报,2006,(03):10-17.doi: 10.3321/j.issn:1000-6869.2006.03.002. [8] 王春刚,张耀春,张壮南. 冷弯薄壁斜卷边槽钢受压构件的承载力试验研究[J].建筑结构学报,2006,(03):1-9.doi: 10.3321/j.issn:1000-6869.2006.03.001. [9] Schafer B W,Pekoz T. Direct Strength Prediction of Cold-Formed Steel Members Using Numerical Elastic Buckling Solution[A].St.Louis,1998. [10] Hancock G J. Design for Distortiona] Buckling of Flexural Members[J].Thin-Walled Structures,1997,(01):3-12.doi: 10.1016/0263-8231(96)00020-1. [11] Schafer B W,Pekoz T. Lateral Braced Cold-Formed Steel Flexural Members with Edge Stiffened Flanges[J].Journal of Structural Engineering,1999,(02):118-127.doi: 10.1061/(ASCE)0733-9445(1999)125:2(118).
点击查看大图
计量
- 文章访问数: 65
- HTML全文浏览量: 4
- PDF下载量: 87
- 被引次数: 0