异形钢管混凝土柱轴心受压试验研究

李思成; 贺冉; 胡张齐; 彭浩; 刘慎云

doi:10.13206/j.gjgS24091301

异形钢管混凝土柱轴心受压试验研究

doi: 10.13206/j.gjgS24091301

李思成¹,
贺冉^1,2, ,,
胡张齐¹,
彭浩¹,
刘慎云²

1. 湖南城市学院土木工程学院, 湖南益阳 413000;
2. 湖南鸿云杭萧绿建科技有限公司, 湖南常德 415137

基金项目:

湖南省企业科技特派员计划项目(2021GK5075)

国家级大学生创新训练项目(S202311527044)。

详细信息

作者简介:
李思成,硕士研究生,主要从事钢-混凝土组合结构的研究。

通讯作者:
贺冉,博士,副教授,主要从事钢结构及组合结构性能、装配式建筑结构性能的研究,122362920@qq.com。

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出版历程
- 收稿日期: 2024-09-13
- 网络出版日期: 2025-03-24

Experimental Research on Special-Shaped Concrete-Filled Steel Tubular Columns Under Axial Compression

Sicheng Li¹,
Ran He^{1,2
, ,},
Zhangqi Hu¹,
Hao Peng¹,
Shenyun Liu²

1. College of Civil Engineering, Hunan City University, Yiyang 413000, China;
2. Hunan Hongyun Hangxiao Green Building Technology Co., Ltd., Changde 415137, China

摘要

摘要: L形、T形、十字形钢管混凝土异形柱采用方钢管和混凝土组成,综合两种材料的力学性能,采用轴心受压试验的方法,对比研究了9根不同长细比的L形、T形、十字形钢管混凝土异形柱的截面形式和试件长度对其破坏形态、荷载-挠度曲线、荷载-应变曲线和荷载-泊松比曲线等的影响。结果表明:短柱发生截面强度破坏,长柱发生弯曲破坏;在所研究的长度范围内,试件长度对L形截面试件和T形截面试件的承载力影响较大,对十字形的影响较小;所有试件的水平挠度与荷载几乎呈线性关系,试件屈服后,水平挠度迅速发展;异形柱在1/2高度处应变最大,泊松比随着加载进行而增大。
- 异形钢管混凝土 /
- 轴心受压 /
- 力学性能 /
- 破坏形态 /
- 承载力
Abstract: L-shaped, T-shaped and cross-shaped concrete-filled steel tubular columns are composed of square steel pipes and concrete, and the mechanical properties of the two materials were synthesized. A total of 9 specimens, including L-shaped, T-shaped and cross-shaped concrete-filled steel tubular columns with different length to slenderness ratios, were tested by axial compression tests, and the effects of the cross-section form and the length of the specimens on the damage morphology of the specimens, load-deflection curves, load-strain curves and load-Poisson’s ratio curves were investigated by comparative studies. The results showed that the short columns suffered from section strength damage and the long columns suffered from bending damage. Within the length range studied in this paper, the specimen length had a greater effect on the bearing capacity of L-section specimens and T-section specimens, and the bearing capacity of cross-section specimens was less affected by this effect. The horizontal deflections of all specimens were almost linearly related to the loads, and developed rapidly after yielding. Shaped columns showed the maximum strain at 1/2 height, and thePoisson’s ratio increased as loading proceeded.
- special-shaped concrete-filled steel tubes /
- axial compression /
- mechanical properties /
- failure mode /
- bearing capacity

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参考文献(13)

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