带约束拉杆矩形钢管混凝土短柱轴压性能的试验

蔡健; 何振强; 陈星

doi:10.13204/j.gyjz200703019

带约束拉杆矩形钢管混凝土短柱轴压性能的试验

doi: 10.13204/j.gyjz200703019

1.
1 华南理工大学,土木工程系,广州 510641;
2.
2 广东新广国际集团广州,510600;
3.
3 广东省建筑设计研究院,广州 510010

基金项目:

广东省自然科学基金重点基金资助项目(012356);华南理工大学土木工程系与广东省建筑设计研究院合作科研项目

详细信息

作者简介:
蔡健男 1959年 7月出生教授博士生导师

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- 被引次数: 0
出版历程
- 收稿日期: 2006-09-20
- 刊出日期: 2007-03-20

EXPERIMENTAL STUDY ON BEHAVIOR OF RECTANGLE CFT STUB COLUMN WITH BINDING BARS SUBJECTED TO AXIALLY LOADING

1.
1 Civil Engineering Dept.,SCUT Guangzhou 510641;
2.
2 Guangdong Xinguang International Group Guangzhou 510600;
3.
3 Civil &Arch.Design Institute of Guangdong Guangzhou 510100

摘要

摘要: 针对约束拉杆对矩形钢管混凝土柱轴压力学性能的影响,对8个轴压试件进行试验,其中1个不设约束拉杆,7个设置约束拉杆。试验主要参数为约束拉杆直径和间距,钢管宽厚比,截面长宽比。试验结果表明:相对于方形截面试件,矩形截面试件设置约束拉杆后,在轴向压力作用下,试件的承载力提高幅度不明显,但对应于峰值荷载的竖向应变值随约束拉杆的加强相应增大,试件的塑性变形能力增大,延性提高。利用国内已有文献中关于矩形钢管混凝土承载力计算方法及EC4(1996)关于方形钢管混凝土计算方法,对带约束拉杆矩形钢管混凝土轴压试件承载力进行计算,发现计算结果比试验值偏低,计算方法偏于保守。
- 矩形钢管混凝土 /
- 约束拉杆 /
- 承载力 /
- 延性
Abstract: A test on eight specimens of rectangle concrete filled steel tubular ( R -CFT) stub columns, including onespecimen without binding bars and seven specimenswith binding bars, is carried out, aiming at axially -loaded behavior ofR -CFT influenced by binding bars. The primary study parameters are diameter and space of binding bar, width -thicknessratio of steel tube and length-width ratio of specimen cross-section. It is shown that the binding bars do enhance ductility anddeformability of R -CFT, though not contributing to the ultimate bearing capacity of R -CFT. Finally, a comparison betweenthe ultimate bearing capacity, calculated by the current methods at home and that of EC4(1996) respectively, and thecounterpart of experiment results is conducted, which shows that the results of calculation are conservative.
- square CFT stub column /
- binding bars /
- bearing capacity /
- ductility

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参考文献(14)

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