Study on the Bearing Capacity of High Strength  Large Size Equal Angles Steels Under Axially Loaded Compression

doi:10.15961/j.jsuese.2013.01.032

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Study on the Bearing Capacity of High Strength Large Size Equal Angles Steels Under Axially Loaded Compression

更新时间：2023-11-14

- Study on the Bearing Capacity of High Strength Large Size Equal Angles Steels Under Axially Loaded Compression
- Advanced Engineering Sciences Vol. 45, Issue 1, Pages: 74-84(2013)
- 作者机构：
  
  重庆大学土木工程学院
- 作者简介：
- 基金信息：
- DOI：10.15961/j.jsuese.2013.01.032
  CLC：
- Published：2013，
  
  Published Online：27 November 2012，
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赵楠,李正良,刘红军.高强大规格等边角钢轴压承载力研究[J].工程科学与技术,2013,45(1):74-84.

Study on the Bearing Capacity of High Strength Large Size Equal Angles Steels Under Axially Loaded Compression. [J]. Advanced Engineering Sciences 45(1):74-84(2013)
赵楠,李正良,刘红军.高强大规格等边角钢轴压承载力研究[J].工程科学与技术,2013,45(1):74-84. DOI： 10.15961/j.jsuese.2013.01.032.

Study on the Bearing Capacity of High Strength Large Size Equal Angles Steels Under Axially Loaded Compression. [J]. Advanced Engineering Sciences 45(1):74-84(2013) DOI： 10.15961/j.jsuese.2013.01.032.

摘要

中文摘要: 进行了19个长细比λ=30～90的Q420 L220 mm×20 mm角钢试件的轴压试验研究。结果表明：此类构件在长细比λ>45时

以弯曲失稳破坏为主；长细比λ≤45时

以弯扭失稳为主。研究了现行钢结构规范中防止局部屈曲宽厚比限值公式和计算弯扭失稳的换算长细比取值公式的适用性。采用逆算单元长度法得到了大规格等边角钢的柱子曲线

研究了此类构件与普通规格等边角钢的差异以及肢厚、肢宽和钢材强度等对柱子曲线的影响。提出了高强大规格等边角钢轴压构件的承载力计算方法。并且研究了高强大规格等边角钢两端偏心受压的柱子曲线，给出了长细比修正系数的建议公式。

Abstract

Abstract:The axial compression member test was conducted to investigate the stability performance of these members

including nineteen Q420 L220×20 specimens which slenderness ratio(λ) ranged from 30～90. The test results showed that when slenderness is λ>45

flexural buckling was observed and when slenderness is λ≤45

local or flexural-torsion or torsion buckling was observed. The applicability of local buckling wide thickness ratio formula and flexural-torsional buckling conversion slenderness ratio formula was researched. By means of inverse calculation segment length method

the column curve of the large size equal angle was got. The comparison with common size angle and parameter analysis was made. Calculation method of bearing capacity of large size equal angle was given. Two ends eccentric compression column curve was also researched

and a suggestion formula of slenderness ratio correction coefficient was given.

关键词

高强大规格等边角钢轴压静力试验逆算单元长度法柱子曲线

Keywords

high strength large size equal angles steelsaxially loaded compression testsinverse calculation segment length methodcolumn curves

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