登录
注册
E-alert
登录
注册
E-alert
ANALYSIS ON DISTORTIONAL BUCKLING OF COLD-FORMED THIN-WALLED STEEL LIPPED CHANNEL STEEL MEMBERS WITH WEB OPENINGS UNDER AXIAL COMPRESSION
-
摘要: 采用通用有限元软件ABAQUS,对冷弯薄壁型钢卷边槽形截面轴压构件的腹板开孔的类型、开孔大小、开孔位置等参数进行分析,研究腹板开孔对构件发生畸变屈曲时屈曲稳定系数k值的影响。结果表明:开孔位置会影响其屈曲模式;多孔间距存在一个安全距离;腹板开圆孔或长圆孔时,构件屈曲系数k有着不同程度的降低。根据影响开孔构件畸变屈曲的主要参数,提出了开孔构件的端距限值和孔间距限值;对腹板开圆孔和长圆孔冷弯薄壁卷边槽钢轴压构件的畸变屈曲稳定系数进行分析并给出了相应的建议计算式。Abstract: The finite element software ABAQUS was used to analyze the influence on the k value of the elastic distortional buckling stability coefficient considering changing of the type of opening, the size and the position of opening in the paper. The results showed that the position of the opening would affect the buckling mode of members, there was a safe distance between the openings, and the buckling stability coefficient k of the members with circle or slotted opening in web had different degrees of reduction. Finally, according to the main influencing parameters, the limits of end distance and distance between the opening were presented, some relative simple formulas were proposed to calculate the distortional buckling stability coefficient of cold-formed thin-walled lipped channel steel members with circle or slotted opening in web.
-
中华人民共和国建设部.冷弯薄壁型钢结构技术规范:GB 50018-2002[S].北京:中国计划出版社,2002. 陈绍蕃.卷边槽钢的局部相关屈曲和畸变屈曲[J].建筑结构学报,2002(1):28-32. 何保康,周天华.冷弯型钢截面局部屈曲和AISI规范有效宽度计算的统一法则[J].建筑钢结构进展,2005,7(4):6-10. 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(3):14-21. 周绪红.薄壁构件稳定理论及其应用[M].北京:科学出版社,2009. 姚行友,李元齐,沈祖炎.高强冷弯薄壁型钢卷边槽形截面轴压构件畸变屈曲性能研究[J].建筑结构学报,2010(11):5-13. 姚行友,李元齐.冷弯薄壁型钢卷边槽形截面构件畸变屈曲承载力计算方法研究[J].工程力学,2014(9):182-189. 姚行友,郭彦利.腹板开圆孔冷弯卷边槽钢轴压构件畸变屈曲承载力试验及计算方法[J].工业建筑,2016,46(5):140-146. 姚谏,滕锦光.冷弯薄壁卷边槽钢弹性畸变屈曲分析中的转动约束刚度[J].工程力学,2008(4):73-77. 姚谏,滕锦光.冷弯薄壁卷边槽钢的畸变屈曲荷载简化计算[J].浙江大学学报(工学版),2008(9):32-39. 徐宏艳,刘晶波.初始缺陷对冷弯薄壁腹板开孔C形钢梁稳定承载力的影响研究[J].建筑结构,2013(5):470-473. CRISTOPHER D M, SCHAFER B W. Experiments on Cold-Formed Steel Columns with Holes[J]. Steel Construction, 2008, 46(10):1164-1182. CRISTOPHER D M, SCHAFER B W. Elastic Buckling of Cold-Formed Steel Columns and Beams with Holes[J].Engineering Structures, 2009, 31(7):2812-2814. 胡白香,刘永娟.轴压单孔冷弯薄壁槽形中长柱的极限承载力[J].江苏大学学报(自然科学版), 2007, 28(3):258-261. 郑敦,余绍锋.开孔冷弯薄壁卷边槽钢畸变屈曲性能分析[J].建筑钢结构进展, 2010, 12(4):32-37. 姚永红,武振宇,成博,等.开孔冷弯薄壁卷边槽钢柱轴压性能的试验研究[J].华南理工大学学报(自然科学版),2011,39(9):61-67. 王春刚,张壮南,赵大千,等.腹板开孔Σ形复杂卷边槽钢轴压承载力试验[J].吉林大学学报(工学版), 2015, 45(3):788-796. -
点击查看大图
计量
- 文章访问数: 42
- HTML全文浏览量: 2
- PDF下载量: 2
- 被引次数: 0
下载:
