摘要
1 轴向拉伸作用下钢管混凝土的性能分析摘要：共进行18组试验，对轴向拉伸作用下钢管混凝土的性能进行分析。主要参数为：含钢率、混凝土类型、钢管与核心混凝土的粘接或非粘接。建立有限元模型，对其进行力学分析和参数研究。结果表明，核心混凝土能提高钢管的抗拉强度。最后，提出钢管混凝土抗拉强度的简化公式。关键词：钢管混凝土；拉伸；混凝土；空心截面；组合效应；失效模型；设计；
This paper reports the behavior of concrete filled steel tubes （CFST） under axial tension. A total of 18 speci- mens were tested. The main parameters were steel ratio, concrete type and bond or unbonded between the steel tube and its core concrete. A finite element model （FEM） was developed to perform mechanism analysis and parametric studies for CFST under axial tension. It was found that the tensile strength of steel tube can be increased due to the existence of the core concrete in CFST. Finally, a simplified formula that can predict the tensile strength was proposed. Keywords： Concrete filled steel tubes （CFST） ; Tension; Concrete; Hollow sections; Composite action; Failure mode; Design; Tensile strength
出处
《钢结构》
2011年第11期75-82,共8页
Steel Construction
关键词
钢管混凝土
拉伸
混凝土
空心截面
组合
效应
失效模型
设计
抗拉强度
Concrete filled steel tubes （CFST）
Tension
Concrete
Hollow sections
Composite action
Failuremode
Design
Tensile strengthJournal of Constructional Steel Research, 2077, 67 （ 17 ） ：1699- 1709
