矩形钢管混凝土柱在扭矩作用下的截面剪应变场研究

王宇航; 聂建国; 樊健生

doi:10.6052/j.issn.1000-4750.2012.10.0789

矩形钢管混凝土柱在扭矩作用下的截面剪应变场研究

王宇航^{1, 3,},
聂建国^{1, 2},
樊健生^{1, 2}

1.
清华大学土木工程系, 北京 100084;
2.
土木工程安全与耐久教育部重点实验室, 北京 100084;
3.
中国铁道科学研究院, 北京 100081

基金项目: 国家自然科学基金项目(51078206);“十二五”科技支撑计划项目(Grant No;2011BAJ09B01)

详细信息

作者简介:
聂建国(1958-), 男, 湖南衡阳人, 教授, 博士, 从事组合结构研究 E-mail:niejg@mail.tsinghua.edu.cn;樊健生(1975-), 男, 山东人, 教授, 博士, 从事组合结构研究 E-mail:fanjsh@mail.tsinghua.edu.cn.

通讯作者:
王宇航 (1985-), 男, 重庆人, 博士生, 从事组合结构研究 E-mail: wangyh04@mails.tsinghua.edu.cn

中图分类号: TU398+.9
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- 文章访问数: 315
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出版历程
- 收稿日期: 2012-10-23
- 刊出日期: 2014-05-24

CROSS SECTIONAL SHEAR STRAIN DISTRIBUTION OF RECTANGULAR CONCRETE FILLED STEEL TUBE COLUMNS SUBJECTED TO TORSION

WANG Yu-hang^{1, 3,},
NIE Jian-guo^{1, 2},
FAN Jian-sheng^{1, 2}

1.
Department of Civil Engineering, Tsinghua University, Beijing 100084, China;
2.
Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Beijing 100084, China;
3.
China Academy of Railway Sciences, Beijing 100081, China

摘要

摘要: 对矩形截面钢管混凝土柱在纯扭和压扭荷载作用下的滞回性能进行了试验研究, 得到了矩形截面钢管混凝土柱的扭矩-扭转角滞回曲线。基于材料力学基本原理建立了纤维梁截面扭率和纤维剪应变间的关系, 进而对矩形截面钢管混凝土柱在扭矩作用下的截面剪应变场分布规律进行了分析, 并建立了三维精细有限元模型进行精度验证, 最后给出了钢管混凝土柱截面扭率和截面纤维剪应变间关系的矩阵表达, 引入了考虑扭转效应的纤维梁模型, 使该模型能够用于分析矩形截面钢管混凝土柱在扭矩作用下的非线性反应。与试验结果的对比表明, 考虑扭转效应的纤维梁模型在分析矩形截面往复扭矩荷载作用下的受力行为时具有较高的求解精度和求解效率, 可为分析不同类型结构体系在地震复杂受力状态下的动力反应提供依据。
- 钢管混凝土 /
- 矩形截面 /
- 剪应变 /
- 纤维梁模型 /
- 扭转
Abstract: Tests on concrete filled steel tube columns with rectangular section subjected to pure torsion and compression-torsion were carried out, and the hysteretic curves of torsion moment versus rotational angle were obtained. Based on the principles of material mechanics, the relations between the torsion curvature of the section and the shear strain of the fiber at the section were established. Then the cross sectional strain distribution at the rectangular section of concrete filled steel tube columns was analyzed. The three-dimensional refined finite element model was also built for purpose of verification. At last, the matrix forms of the relations between the torsion curvature of the section and the shear strain of the fiber at the section were derived and introduced into the fiber beam model considering torsion effect. The comparison between the test results and calculation results shows that the fiber beam model considering torsion effect has high modeling efficiency and accuracy for predicting the torsion behavior of concrete filled steel tube columns with rectangular section, and is suitable for analyzing the dynamic response of structures subjected the combined cyclic loads due to earthquake excitations.
- concrete filled steel tube /
- rectangular section /
- shear strain /
- fiber beam model /
- torsion

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参考文献(11)

[1]	蔡绍怀. 我国钢管混凝土结构技术的最新进展[J]. 土木工程学报, 1999, 32(4): 16-26. Cai Shaohuai. Recent development of steel tube-confined concrete structures in China [J]. China Civil Engineering Journal, 1999, 32(4): 16-26. (in Chinese)
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文章访问数: 315
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矩形钢管混凝土柱在扭矩作用下的截面剪应变场研究

作者简介: 聂建国(1958-), 男, 湖南衡阳人, 教授, 博士, 从事组合结构研究 E-mail:niejg@mail.tsinghua.edu.cn;樊健生(1975-), 男, 山东人, 教授, 博士, 从事组合结构研究 E-mail:fanjsh@mail.tsinghua.edu.cn.

通讯作者: 王宇航 (1985-), 男, 重庆人, 博士生, 从事组合结构研究 E-mail: wangyh04@mails.tsinghua.edu.cn

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出版历程

CROSS SECTIONAL SHEAR STRAIN DISTRIBUTION OF RECTANGULAR CONCRETE FILLED STEEL TUBE COLUMNS SUBJECTED TO TORSION

计量

出版历程

目录

作者简介:
聂建国(1958-), 男, 湖南衡阳人, 教授, 博士, 从事组合结构研究 E-mail:niejg@mail.tsinghua.edu.cn;樊健生(1975-), 男, 山东人, 教授, 博士, 从事组合结构研究 E-mail:fanjsh@mail.tsinghua.edu.cn.

通讯作者:
王宇航 (1985-), 男, 重庆人, 博士生, 从事组合结构研究 E-mail: wangyh04@mails.tsinghua.edu.cn