钢骨-圆钢管高强混凝土组合柱偏心受压有限元分析  

Finite Element Analysis on Circular Steel Tube Composite Column Filled with Steel-Reinforced High Strength Concrete under Eccentric Loading

作　　者：徐亚丰[1] 金松[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2016年第1期40-50,共11页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家留学基金项目(201308210105);辽宁省教育厅科研项目(L2014238)

摘　　要：目的研究钢骨-圆钢管高强混凝土组合柱的偏压力学性能,为工程设计提供相关的参考和建议.方法采用大型通用有限元软件ABAQUS对12根钢骨-圆钢管高强混凝土组合柱偏心受压进行了有限元分析,研究了荷载-变形关系曲线、破坏形态,同时分析了偏心距、配骨指标、长细比和加载方向对于偏心受压组合柱力学性能的影响.结果在整个加载过程中,侧向挠度沿着柱体高度方向的侧向挠曲线基本符合正弦半波曲线;组合柱的偏心受压承载力随偏心率和长细比的增大而急剧下降,随着配骨指标的增大而不断提高,不同加载方向对于组合柱承载力和延性的影响相对较小.结论钢骨-钢管高强混凝土组合柱具有良好的偏心受压力学性能.The paper studied mechanical properties of circular steel tube composite column filled with steel-reinforced high strength concrete under eccentric loading. Using the FEMsoftw are ABAQUS,tw elve specimens of composite column under eccentric loading were analyzed. Load-deformation curves and failure patterns were obtained. At the same time,influences of the eccentricity,the slenderness ratio,the steel-reinforced ratio and the loading direction on mechanical properties of the composite column were also investigated. The lateral deflection along height of the column is similar to the half sine wave curve. With the increasing of the eccentricity and slendernessratio,the bearing capacity of the composite column is decreased rapidly. But it increases with the increase of the steel-reinforced ratio. Affects of loading direction on the bearing capacity and ductility of the composite column are small. Conclusion is that mechanical performances of the circular steel tube filled with steel-reinforced high strength concrete composite column under eccentric compression are excellent.

关 键 词：有限元分析 钢骨-钢管高强混凝土组合柱 偏心受压 偏心距 长细比 加载方向 

分 类 号：TU398.9[建筑科学—结构工程]