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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

26卷

期数:

2009年04期

页码:

80-86

栏目:

出版日期:

2009-12-20

文章信息/Info

Title:

Experiment on Bearing Capacity of Single Angle Struts with One-sided Bolt Connection

作者:

邓洪洲¹,龙海波¹,董建尧²

1.同济大学建筑工程系,上海200092;2.华东电力设计院,上海200063

Author(s):

DENG Hong-zhou¹, LONG Hai-bo¹, DONG Jian-yao²

1. Department of Building Engineering, TongjiUniversity, Shanghai 200092, China; 2. East China Electric Power Design Institute, Shanghai 200063, China

关键词:

单面螺栓连接;  单角钢;  压杆试验;  极限承载力;  长细比;  局部失稳

Keywords:

one-sided bolt connection;  single angle;  strut test;  ultimate bearing capacity;  slenderness ratio;  local buckling

分类号:

TU311.3

DOI:

-

文献标志码:

A

摘要:

根据70根角钢压杆构件的试验结果,并结合有限元分析模型考察了单面螺栓连接跨中有支撑的单角钢的极限承载力和不同长细比下的破坏模态,提出了提高该类构件承载力的构造措施,同时在查阅和比较各国多个相关规范和文献的基础上,对《架空送电线路杆塔结构设计技术规定》(DL/T 5154—2002)的压杆稳定计算公式提出了修改建议。分析结果表明:小长细比构件易发生连接肢的端部局部失稳,大长细比构件则易发生弯曲整体失稳,构件沿最小轴和平行轴失稳宜采用不同的换算长细比公式; 所得结果为今后的铁塔设计工作提供了理论依据。

Abstract:

Ultimate bearing capacity of single angle struts with one-sided bolt connection was studied by combining with the finite element simulation according to results of strut tests with 70 angles. The relationship between failure mode and slenderness ratio was discussed. The construction measures to increasing bearing capacity of this kind of members were also proposed. Based on the comparison of several relevant codes, revising suggestions for calculation formula of strut stability in Technical Regulation of Design for Tower and Pole Structures of Overhead Transmission Line(DL/T 5154—2002)were put forward. The analytical results show that failure of members with low slenderness ratio tends to cause local buckling, while failure of members with high slenderness ratio will cause flexural buckling. It is also pointed that different formulas for calculating equivalent slenderness ratio should be adopted respectively for members buckling towards parallel axis and those towards minor axis. Research results can provide theoretical basis for design of steel towers in the future.

参考文献/References:

[1] DL/T 5154-2002,架空送电线路杆塔结构设计技术规定[S]. DL/T 5154-2002,Technical Regulation of Design for Tower and Pole Structures of Overhead Transmission Line[S].
[2]GB 50017-2003,钢结构设计规范[S]. GB 50017-2003,Code for Design of Steel Structures[S].
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[7]DIN 18800,Structural Steelwork.Part 2:Analysis of Safety Against Buckling of Linear Members and Frames[S].
[8]ECCS Committee 8,Manual on Stability of Steel Structures[S].
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[13]李启才,顾 强.抗滑移系数对框架中钢梁高强度螺栓拼接性能的影响研究[J].西安科技大学学报,2007,27(1):43-48. LI Qi-cai,GU Qiang.Effect of Slipping Coefficient on Splicing of High-strength Bolts on Steel Beam in Moment-resisting Frame[J].Journal ofXi'an University of Science and Technology,2007,27(1):43-48.
[14]康强文,童根树.单肢连接的单角钢压杆承载力分析[J].钢结构,2006,21(2):7-11. KANG Qiang-wen,TONG Gen-shu.Load-carrying Capacity of Single Angle Struts Connected with One Leg[J].Steel Construction,2006,21(2):7-11.
[15]刘沪昌,唐国安.轴心受压热轧等边角钢肢边缘局部屈曲稳定计算方法的探讨[J].电力建设,2007,28(9):1-4. LIU Hu-chang,TANG Guo-an.Computation Methodology of Buckling Stability of Hot Rolled Steel Angle Edge Under Axial Compression[J].Electric Power Construction,2007,28(9):1-4.

相似文献/References:

备注/Memo

备注/Memo:

收稿日期:2009-09-10
基金项目:中国电力工程顾问集团公司科技项目(DG2-T01-2007)
作者简介:邓洪洲(1960-),男,黑龙江宾县人,教授,博士研究生导师,工学博士,博士后,E-mail:denghongzhou@online.sh.cn。

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更新日期/Last Update: 2009-12-20