随着型钢混凝土结构在建筑结构中的广泛运用,对型钢混凝土结构的承载能力研究就越来越重要,而扭矩荷载在建筑结构中普遍存在.基于台湾大学HSU H L的3根箱形型钢混凝土构件试验结果,利用有限元分析软件ABAQUS建立模型,对这3根型钢混凝土...随着型钢混凝土结构在建筑结构中的广泛运用,对型钢混凝土结构的承载能力研究就越来越重要,而扭矩荷载在建筑结构中普遍存在.基于台湾大学HSU H L的3根箱形型钢混凝土构件试验结果,利用有限元分析软件ABAQUS建立模型,对这3根型钢混凝土纯扭构件进行抗扭承载力分析,建模过程中采用内聚力黏结单元模拟型钢与混凝土之间的黏结滑移作用,使模型更接近真实状态.同时,利用试验结果对箱形型钢混凝土纯扭构件承载力计算公式进行验证,确保为工程设计提供正确的理论方法.展开更多
Experimental study on the fundamental behavior of box shape steel reinforced concrete （SRC） beams was conducted. Seven 1 ： 3 scale model SRC beams were tested to failure. The experimental results indicate that the ...Experimental study on the fundamental behavior of box shape steel reinforced concrete （SRC） beams was conducted. Seven 1 ： 3 scale model SRC beams were tested to failure. The experimental results indicate that the flexural strength increases with the increase of the ratio of flexural reinforcement and the thickness of flange of the shape steel; the shear strength increases with the increase in the thickness of the web of the shape steel. Concrete filled in the box shape steel can prevent the early failure of specimens due to the buckling of the box shape steel, and increase the ultimate load. Measures should be made to strengthen the connection and co-work between the shape steel and the concrete. Formulae for flexural and shear strength of the composite beams are proposed, and the calculated results are in good agreement with the experimental results. In general, the box shape SRC beam is a kind of ductile member, and it is suitable for extensive engineering application.展开更多
文摘随着型钢混凝土结构在建筑结构中的广泛运用,对型钢混凝土结构的承载能力研究就越来越重要,而扭矩荷载在建筑结构中普遍存在.基于台湾大学HSU H L的3根箱形型钢混凝土构件试验结果,利用有限元分析软件ABAQUS建立模型,对这3根型钢混凝土纯扭构件进行抗扭承载力分析,建模过程中采用内聚力黏结单元模拟型钢与混凝土之间的黏结滑移作用,使模型更接近真实状态.同时,利用试验结果对箱形型钢混凝土纯扭构件承载力计算公式进行验证,确保为工程设计提供正确的理论方法.
文摘Experimental study on the fundamental behavior of box shape steel reinforced concrete （SRC） beams was conducted. Seven 1 ： 3 scale model SRC beams were tested to failure. The experimental results indicate that the flexural strength increases with the increase of the ratio of flexural reinforcement and the thickness of flange of the shape steel; the shear strength increases with the increase in the thickness of the web of the shape steel. Concrete filled in the box shape steel can prevent the early failure of specimens due to the buckling of the box shape steel, and increase the ultimate load. Measures should be made to strengthen the connection and co-work between the shape steel and the concrete. Formulae for flexural and shear strength of the composite beams are proposed, and the calculated results are in good agreement with the experimental results. In general, the box shape SRC beam is a kind of ductile member, and it is suitable for extensive engineering application.
