基于统一强度理论的钢管自应力混凝土柱极限承载力研究

蒙春贵; 彭林欣; 滕晓丹

doi:10.13204/j.gyjzG20112707

基于统一强度理论的钢管自应力混凝土柱极限承载力研究

doi: 10.13204/j.gyjzG20112707

蒙春贵¹,
彭林欣^1,2,
滕晓丹^1,2,3, ,

1. 广西大学土木建筑工程学院, 南宁 530004;
2. 广西防灾减灾与工程安全重点实验室, 工程防灾与结构安全教育部重点实验室, 广西大学, 南宁 530004;
3. 广西新发展交通集团有限公司, 南宁 530028

基金项目:

中国博士后科学基金面上资助项目（2018M633298）；广西自然科学基金面上项目（2018GXNSFAA138176）；广西创新驱动发展专项资金项目（桂科AA18118055）。

详细信息

作者简介:
蒙春贵,男,1996年出生,硕士研究生。

通讯作者:
滕晓丹,女,1984年出生,博士,硕士生导师,xdteng@gux.edu.cn。

计量
- 文章访问数: 142
- HTML全文浏览量: 17
- PDF下载量: 3
- 被引次数: 0
出版历程
- 收稿日期: 2020-11-27
- 网络出版日期: 2022-04-24

Research on Ultimate Bearing Capacity of Self-stressing Concrete-Filled Steel Tube Based on Unified Strength Theory

MENG Chungui¹,
PENG Linxin^1,2,
TENG Xiaodan^{1,2,3
, ,}

1. School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China;
2. Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Nanning 530004, China;
3. Guangxi Xinfazhan Communications Group Co., Ltd., Nanning 530028, China

摘要

摘要: 为预测钢管自应力混凝土柱的极限承载力，基于双剪统一强度理论，对钢管自应力混凝土轴压柱进行受力分析，引入长细比折减系数，考虑混凝土自应力从而得到了约束系数k的计算新公式，构建了一种新的钢管自应力混凝土柱极限承载力理论计算方法。将该计算方法分析的结果与已有试验数据进行对比，两者吻合良好。进一步分析了混凝土强度、钢材屈服强度、自应力值、钢管壁厚和钢管外径对钢管自应力混凝土柱轴压极限承载力的影响，各因素的影响顺序为：钢管外径>钢管壁厚>混凝土强度>钢材屈服强度>自应力值。
- 双剪统一强度理论 /
- 自应力 /
- 钢管混凝土 /
- 柱 /
- 极限承载力
Abstract: By using self-stressing concrete can improve the coordination between steel tube and concrete and meet the practical engineering requirements. In order to predict the ultimate bearing capacity, the stress analysis of self-stressing CFST column under axial compression was carried out based on twin-shear unified strength theory. The reduction factor of slenderness ratio was introduced and the self-stressing of concrete was considered for calculating constraint coefficient k. A new theoretical calculation method for the ultimate bearing capacity of self-stressing CFST column was established. The results obtained by this method were in good agreement with available experimental data, and the effects of concrete strength, steel yield strength, self-stress value, steel tube wall thickness and steel tube outer diameter on the ultimate bearing capacity of self-stressing CFST column were further analyzed, the influencing order of each factor was:steel tube outer diameter>steel tube wall thickness>concrete strength>steel yield strength>self-stress value.
- twin-shear unified strength theory /
- self-stressing /
- concrete-filled steel tube /
- column /
- ultimate bearing capacity

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参考文献(17)

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