钢管混凝土构件受力性能数值研究

山东大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (6): 76-81.

钢管混凝土构件受力性能数值研究

张波1,2,李术才1,2,杨学英3,李明田4,孙国富5

1.山东大学土建与水利学院, 山东济南 250061; 2. 山东大学岩土与结构工程研究中心,山东济南 250061;
3. 山东城市建设职业学院管理系, 山东济南 250014; 4. 山东交通学院土木工程系,山东济南 250023;
5. 山东财政学院工商管理学院,山东济南 250014

收稿日期:2010-03-31 出版日期:2010-12-16 发布日期:2010-03-31
作者简介:张波(1977-),男,山东淄博人,讲师,博士,主要研究方向为大跨度桥梁与地基相互作用及节理岩体加锚.E-mail:zhangbosdchina@163.com
基金资助:
国家自然科学面上基金资助项目(40872203);山东大学自主创新基金;国家自然基金青年基金资助项目(40902083)

Numerical study of concrete filled steel tube structure mechanical behavior

ZHANG Bo1,2, LI Shu-cai1,2, YANG Xue-ying3, LI Ming-tian4,SUN Guo-fu5

1. School of Civil Engineering, Shandong University, Jinan 250061, China;
2. Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, China;
3. Engineering Adminisration Department, Shandong Urban Construction Vocational College, Jinan 250014, China;
4. Shandong Jiaotong University, Department of Civil Engineering, Jinan 250023, China;
5. Department of Business Administration, Shandong University of Finance, Jinan 250014, China

Received:2010-03-31 Online:2010-12-16 Published:2010-03-31

摘要/Abstract

摘要：

分别以钢管混凝土三维有限元法和纤维单元法的应力-应变关系推导出了适于梁单元的应力-应变关系。以这两种方法得到钢管混凝土应力-应变关系,应用于梁单元法进行数值计算,分别对工程中最常出现的钢管混凝土轴压构件及偏压构件进行了计算,并将计算结果与已有的试验结果进行了比较。结果表明:以纤维单元法得到梁单元应力-应变关系在进行钢管混凝土构件数值分析时能取得理想的结果;以三维有限元法得到梁单元应力-应变关系,应用于方截面钢管混凝土构件时计算结果理想,而应用于圆截面钢管混凝土构件时与实验结果相比偏差较大。

关键词: 钢管混凝土, 应力-应变关系, 数值研究

Abstract:

The stress-strain relationships of concrete filled steel tube(CFST) beam element were concluded from the threedimensional finite element method and the fiber element method. The axial loaded and eccentric compression CFST structures were computed through the beam element method with the two types of stressstrain relationship deduced. The numerical results were compared with the prior test results. The results showed that the accuracy was good when the stress-strain relationship of CFST concluded from fiber element was used. The results were accurate when the stressstrain relation obtained from the three-dimensional finite element method were used in studying square crosssection CFST structures, and the numerical result deviate from experimental results when the stress-strain relationship concluded from three dimensional finite element was used in computing circular cross-section CFST structures.

Key words: concrete filled steel tube, stress-strain relation, numerical studying

张波1,2,李术才1,2,杨学英3,李明田4,孙国富5. 钢管混凝土构件受力性能数值研究[J]. 山东大学学报(工学版), 2010, 40(6): 76-81.

ZHANG Bo1,2, LI Shu-cai1,2, YANG Xue-ying3, LI Ming-tian4，SUN Guo-fu5 . Numerical study of concrete filled steel tube structure mechanical behavior[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2010, 40(6): 76-81.

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