[1]惠宽堂,巨 晶,樊军建,等.U型截面钢拱稳定性相关问题研究[J].西安建筑科技大学学报:自然科学版,2013,45(02):171-176.[doi:10.15986/j.1006-7930.2013.02.004]
　XI Kuan-tang,JU Jing,FAN Jun-jian,et al.Out-of-plane stability analysis of U-section steel arch[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2013,45(02):171-176.[doi:10.15986/j.1006-7930.2013.02.004]
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U型截面钢拱稳定性相关问题研究()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
45
期数:
2013年02期
页码:
171-176
栏目:
出版日期:
2013-04-30

文章信息/Info

Title:
Out-of-plane stability analysis of U-section steel arch
文章编号:
1006-7930(2013)02-0171-06
作者:
惠宽堂1; 巨 晶1; 樊军建2; 李 瑾1
(1.西安建筑科技大学土木工程学院,陕西 西安 710055;2.西安有色冶金设计研究院,陕西 西安 710001)
Author(s):
XI Kuan-tang1; JU Jing1; FAN Jun-jian2; LI Jin1
(1.School of Civil Engineering, Xian Univ. of Arch.& Tech., Xian 710055,China; 2.Xian Engineering & Research Institute of Nonferrous Metals, Xian 710001,China)
关键词:
U型钢拱; 平面外失稳; 荷载模式; 有限元分析; 加缀板
Keywords:
U-section steel arch;  in-plane instability;  load model;  FEA;  with batten plate
分类号:
TU392.4
DOI:
10.15986/j.1006-7930.2013.02.004
文献标志码:
A
摘要:
现有研究采用径向荷载模式研究U型拱的平面内失稳,本文通过对径向荷载与实际的竖向荷载模式的有限元分析,发现采用径向荷载代替竖向荷载,固支拱在矢跨比0.05到0.35时,误差不大,且偏于安全;固支拱矢跨比0.4到0.5和销轴支座拱,径向荷载偏于危险,且矢跨比越大,误差率越大.针对钢拱的局部屈曲等问题,本文提出加设缀板形成间断闭合截面的方法,并与加设隔板的方法进行比较研究,发现加设缀板优于加设隔板,可更好提高钢拱平面外稳定性,而且用料少、施工简单.加设隔板、缀板对提高平面内承载力效果并不明显.最后,采用回归分析给出竖向荷载下圆弧拱的平面内屈曲荷载计算公式
Abstract:
Radial load mode is adopted in the study of the instability of U-section steel arch in the most existing research. In this article, radial and vertical load models are studied using finite element analysis. It shows that the fixed arch’s results of the radial load are more conservative when f/l=0.05to 0.35,and the error is small. In addition, radial load is dangerous when f/l=0.4,0.45and 0.5of fixed arches, so do all pin bearing arches, and the bigger rise-span ratio, the greater error. To prevent buckling of steel arch, this paper proposes a method using a discontinuous-closed cross section with adding batten plate, and it can be an effective way to enhance the out-plane stability of U-section steel arch. Compared with the U-section steel arch with clapboard, the proposed method can get greater buckling load with less material. Provided with batten plate, clapboard is not good for improving in-plane instability. Finally, this paper puts forward a calculation formula for the in-plane buckling vertical load

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相似文献/References:

[1]惠宽堂,李 瑾,樊军建,等.I形截面圆弧拱弹性弯扭屈曲研究[J].西安建筑科技大学学报:自然科学版,2013,45(04):520.[doi:10.15986/j.1006-7930.2013.04.010]
　XI Kuan-tang,LI Jin,FAN Jun-jian,et al.Elastic flexural-torsional buckling load of I-Section circular arches[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2013,45(02):520.[doi:10.15986/j.1006-7930.2013.04.010]

备注/Memo

备注/Memo:
收稿日期:2012-10-16 修改稿日期:2013-03-25
基金项目:国家重点基础研究发展计划(973计划)(2012CB723302)
作者简介:惠宽堂(1962-),男,陕西富平人,副教授,主要从事钢结构稳定与抗震研究.
更新日期/Last Update: 2015-10-05