钢骨-圆钢管高强混凝土组合短柱轴心受压力学性能分析  

RESEARCH ON MECHANICAL PROPERTIES OF CIRCULAR STEEL TUBE FILLED WITH STEEL REINFORCED HIGH-STRENGTH CONCRETE SHORT COMPOSITE COLUMN UNDER AXIAL COMPRESSION

作　　者：付占明 李玲[2] 徐亚丰[3] 金松[3] FU Zhanming;LI Ling;XU Yafeng;JIN Song(N.E.U Engineering ＆ Research Institute Co.Ltd,Shenyang 110004,China;Hubei University of Science ＆ Technology,Xianning 437100,China;School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China)

机构地区：[1]东北大学设计研究院(有限公司),沈阳110004 [2]湖北科技学院,湖北咸宁437100 [3]沈阳建筑大学土木工程学院,沈阳110168

出　　处：《钢结构》2018年第9期42-47,共6页Steel Construction

摘　　要：为研究钢骨-圆钢管高强混凝土组合短柱轴心受压力学性能,对钢骨-圆钢管高强混凝土组合短柱展开非线性有限元分析。研究了不同受力阶段荷载-位移曲线的特征,不同受力阶段应力分布规律以及破坏形态,讨论了组合短柱轴心受压受力过程中荷载分配特性曲线以及荷载-横向变形系数曲线,分析了不同参数对轴心受压组合短柱力学性能的影响。提出了组合短柱轴心受压承载力计算式,并且编写了组合短柱轴心受压纤维模型法程序。结果表明:钢材强度和径厚比对组合柱轴心受压力学性能影响较大。简化公式计算结果和基于纤维模型的数值算法计算结果与试验结果和有限元计算结果吻合良好。To study the mechanical properties of circular steel tube filled with steel reinforced high strength concrete short composite column under axial compression,nonlinear finite element analysis of circular steel tube filled with steel reinforced high strength concrete short composite column has been conducted. The characteristics of load versus longitudinal strain curve and stress distribution under different stage and the failure mode of the short composite column were investigated. Load distribution characteristic curve and load versus lateral deformation coefficient characteristic curve were discussed. Effects of different parameters on the mechanical properties of short composite columns under axial compression were analyzed. A simplified bearing capacity calculation formula of short composite columns was proposed,and the fiber model analysis program was coded. The strength of the steel and diameter-wall thickness ratio had a significant influence on the mechanical properties of the short composite column under axial load. The simplified bearing capacity calculation formula and numerical calculation results were in good agreement with the FEM and test results.

关 键 词：组合柱 有限元分析 轴心受压 承载力 纤维模型法 

分 类 号：TU398.9[建筑科学—结构工程]