[1]李天,李月华,刘海涛,等.平面钢屋架节点刚性次应力影响分析[J].郑州大学学报(工学版),2005,26(01):16-19.[doi:10.3969/j.issn.1671-6833.2005.01.005]
LI Tian,LI Yuehua,Liu Haitao,et al.Analysis of the influence of rigid secondary stress on flat steel roof truss joints[J].Journal of Zhengzhou University (Engineering Science),2005,26(01):16-19.[doi:10.3969/j.issn.1671-6833.2005.01.005]
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平面钢屋架节点刚性次应力影响分析(
)
《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]
- 卷:
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26
- 期数:
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2005年01期
- 页码:
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16-19
- 栏目:
-
- 出版日期:
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1900-01-01
文章信息/Info
- Title:
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Analysis of the influence of rigid secondary stress on flat steel roof truss joints
- 作者:
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李天; 李月华; 刘海涛; 等.
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郑州大学土木工程学院,河南,郑州,450002, 郑州大学土木工程学院,河南,郑州,450002, 郑州大学土木工程学院,河南,郑州,450002, 郑州大学土木工程学院,河南,郑州,450002
- Author(s):
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LI Tian; LI Yuehua; Liu Haitao; etc
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-
- 关键词:
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钢屋架; 节点刚性; 次应力; 次内力
- Keywords:
-
- DOI:
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10.3969/j.issn.1671-6833.2005.01.005
- 文献标志码:
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A
- 摘要:
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应用有限元分析软件,对两种跨度下典型平面钢屋架节点刚性所产生的次应力进行了分析计算.对典型平面钢屋架采用了平面铰接模型、平面刚接模型Ⅰ以及平面刚接模型Ⅱ.分析了在普通荷载作用下钢屋架次应力的大小、分布规律以及影响次内力大小的主要因素,并初步探讨了次应力对钢屋架计算方法的影响.结果表明,钢屋架杆件的次内力随着杆件线刚度的增大而增大,随着屋架跨度的增大,次应力的影响也愈大,且次应力的影响不可忽略.该结论可为考虑次应力的钢屋架的设计提供参考.
- Abstract:
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Using finite element analysis software, the secondary stress generated by the rigidity of typical flat steel roof truss joints under two spans was analyzed and calculated. The planar articulated model, planar rigid joint model I and planar rigid joint model II were used for typical flat steel roof trusses, and the magnitude, distribution law and main factors affecting the secondary internal force of steel roof trusses under ordinary load were analyzed, and the influence of secondary stress on the calculation method of steel roof truss was preliminarily discussed. The results show that the secondary internal force of the steel roof truss members increases with the increase of the linear stiffness of the members, and the influence of secondary stress increases with the increase of the span of the roof truss, and the influence of secondary stress cannot be ignored. This conclusion can provide a reference for the design of steel roof truss considering secondary stress.
更新日期/Last Update:
1900-01-01