竖向均布荷载作用下四肢钢管混凝土格构柱力学性能数值分析  

NUMERICAL ANALYSIS OF THE MECHANICAL PROPERTIES OF FOUR-TUBE CFST LATTICED COLUMNS UNDER VERTICAL UNIFORMLY DISTRIBUTED LOADS

作　　者：章彦[1,2] 谭向军[2] 王群雄 刘忠[1] 

机构地区：[1]湘潭大学土木工程与力学学院,湖南湘潭411105 [2]湘潭大学基建处,湖南湘潭411105

出　　处：《钢结构》2015年第10期38-43,共6页Steel Construction

摘　　要：针对竖向均布荷载作用下四肢钢管混凝土格构柱的力学性能进行了非线性数值模拟。通过建立三维有限元模型,模拟了四肢钢管混凝土格构柱的破坏形态,并根据该模型讨论了核心混凝土强度等级、钢材等级与钢管的壁厚、长径比等参数对构件受力性能的影响。模拟结果与试验数据吻合较好,可为工程设计提供参考依据。Nonlinear numerical simulation was conducted to investigate the mechanical behaviors of four-tube CFST latticed columns under vertical uniformly distributed loads.The failure mode of four-tube CFST latticed columns was simulated by 3D finite element model.Moreover,the mechanical behavior of members was studied corresponding to different parameters such as core-concrete strength grade,steel grade,wall thickness of steel tube and length-diameter ratio.The results showed a good agreement between the numerical simulation and experiment data,which provided a useful reference for engineering design.

关 键 词：钢管混凝土格构柱 竖向均布荷载 有限元法 非线性分析 

分 类 号：TU398.9[建筑科学—结构工程]