直缝钢管轴压稳定性能研究

doi:10.11930/j.issn.1004-9649.2014.1.57.5

中国电力 ›› 2014, Vol. 47 ›› Issue (1): 57-62.DOI: 10.11930/j.issn.1004-9649.2014.1.57.5

直缝钢管轴压稳定性能研究

邢海军¹, 韩军科¹, 施刚², 张大长³, 李振宝⁴, 王旭明¹

1. 中国电力科学研究院,北京 100055；
2. 清华大学土木工程系,北京 100084；
3. 南京工业大学土木工程学院,江苏南京 210009；
4. 北京工业大学建筑工程学院,北京 100022

收稿日期:2013-10-25 出版日期:2014-01-31 发布日期:2015-12-18
作者简介:邢海军（1976-）,男,山西平遥人,高级工程师,从事电力系统输电线路结构试验和设计研究。E-mail: xinghj@epri.sgcc.com.cn

Study on Stability of Straight Welded Steel Tube under Axial Compression Test

XING Hai-jun¹, HAN Jun-ke¹, SHI Gang², ZHANG Da-chang³, LI Zhen-bao⁴, WANG Xu-ming¹

1. China Electric Power Research Institute, Beijing 100055, China;
2. Department of Civil Engineering, Tsinghua University,Beijing 100084, China;
3. College of Civil Engineering, Nanjing University of Technology, Nanjing 210009, China;
4. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100022, China

Received:2013-10-25 Online:2014-01-31 Published:2015-12-18

摘要/Abstract

摘要： 直缝钢管已广泛应用到钢管塔桁架结构中,应用到的钢材牌号主要是Q345和Q420,随着当前钢铁冶金和钢管加工工艺的日益加强,钢管轴压承载性能逐渐提高,但近期对此类钢材轴压杆的稳定性能研究还很少。对98根径厚比限值范围内的Q345和Q420未镀锌直缝钢管进行轴压试验研究。基于试验和有限元分析结果,分析了该类构件的整体稳定性能,总结了其失稳变形特征,并将其稳定承载力与规范值进行对比分析。提出了两端铰接的Q345钢管和Q420钢管在轴心受压构件稳定设计时所取截面分类,为今后钢结构设计提供基础性研究数据。

关键词: 直缝钢管, Q345, Q420, a类截面, b类截面

Abstract: Straight seam steel pipe has been widely applied to steel tower truss structure, and the main steel grades include Q345 and Q420. With the development of metallurgical and steel processing technology, the steel’s axial bearing performance has been improved gradually. But up to now, few researches have been made on bearing test of axial steel pipes. To research the stability of straight welded steel tubes, compression tests are conducted on total 98 pieces of straight welded, un-galvanized Q345 and Q420 steel tubes with a diameter-thickness ratio in the limited range. Based on the results of experimental and simulation, their stability performance is studied and the bearing capacity is compared with its standard value so as to obtain the characteristics of deformation failure. The cross-section classification is proposed for the Q345 and Q420 with two ends hinged for designing the stability of steel angle members under axial compression. The results also provide the basic data for study of the design method of steel structures.

Key words: straight welded steel pipe, Q345, Q420, class a cross section, class b cross section

中图分类号:

TU391

邢海军, 韩军科, 施刚, 张大长, 李振宝, 王旭明. 直缝钢管轴压稳定性能研究[J]. 中国电力, 2014, 47(1): 57-62.

XING Hai-jun, HAN Jun-ke, SHI Gang, ZHANG Da-chang, LI Zhen-bao, WANG Xu-ming. Study on Stability of Straight Welded Steel Tube under Axial Compression Test[J]. Electric Power, 2014, 47(1): 57-62.

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直缝钢管轴压稳定性能研究

Study on Stability of Straight Welded Steel Tube under Axial Compression Test

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直缝钢管轴压稳定性能研究

Study on Stability of Straight Welded Steel Tube under Axial Compression Test

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