中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 新型冷弯翼缘闭合组合受弯构件的力学性能 东北林业大学学报 2010,38 (8) 115-119+148
Position: Home > Articles > Mechanical Behaviors of Two New Types of Cold-formed Flange-closed Composite Bending Members Journal of Northeast Forestry University 2010,38 (8) 115-119+148

新型冷弯翼缘闭合组合受弯构件的力学性能

作  者：
武胜;张厚;王伟;龚爱群
单  位：
黑龙江省建设集团有限责任公司;哈尔滨工业大学;东北林业大学
关键词：
冷弯薄壁型钢;空翼缘梁;静力性能;有限元分析
摘  要：
利用空翼缘梁的独特截面优势,以空翼缘梁及其适当变形后的翼缘多折线空翼缘梁为基础,将两种截面经过合理变形,并经两两组合电弧点焊形成两类新型截面形式——翼缘闭合组合截面DHF1、DHF2。采用非线性有限元方法,通过分析新型截面受弯构件的弯矩—曲率曲线、参数变化极限弯矩曲线和变形云图,全面考查了截面高度、截面宽度、板件厚度和闭合区高度比等参数对构件的变形模式、屈曲特征、极限弯矩、中点相对挠度等方面力学性能的影响规律。研究表明,新型截面构件的受压侧板件局部屈曲不易出现,从而抗弯能力和抗局部变形能力强,并且当闭合区高度比较大时构件的延性较好。冷弯翼缘闭合新型组合截面作为受弯构件具有较为优越的力学性能,可以深入试验研究并合理推广使用。
译  名：
Mechanical Behaviors of Two New Types of Cold-formed Flange-closed Composite Bending Members
作  者：
Wu Sheng(College of Civil Engineering,Northeast Forestry University,Harbin 150040,P.R.China);Zhang Hou(Heilongjiang Construction Group Co.,Ltd.);Wang Wei(Harbin Institute of Technology)
关键词：
Cold-formed thin-walled steel;Hollow flange beam (HFB);Mechanical behaviors;Finite element analysis
摘  要：
Based on the hollow flange beam (HFB) section and another flange stiffened HFB section,two new types of cold-formed flange-closed welding sections called DHF1 and DHF2 were developed through changing the component of section and section parameters of the two hollow flange section beams.Nonlinear finite element method is applied to study the sta-tic behaviors including moment-curvature curves,flexural capacity-parameter curves and deformation plots of the new section bending members.The mechanical behaviors such as deformation modes,buckling characteristics,flexural capacity and relative deflections of the middle span of the two new types of section bending members are overall analyzed when the section height,section width,thickness and height ratio of the hollow flange part are changing.It can be concluded that the local buckling stress of the new sections enhances significantly,which improves the flexural capacity of the members.The ductility of the new section members strengthens significantly when the height ratio of the hollow flange part is relatively bigger.The two new types of sections are proved to have some superior static behaviors.Further experimental study on the two new types of sections should be conducted and they could be used in the practical engineering reasonably.

相似文章

导出引用
计量
文章访问数: 4
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46