圆中空夹层钢管混凝土轴压短柱承载力研究  

Research on bearing capacity of axially-loaded short columns of concrete filled double skin steel tubes

作　　者：王羡农[1] 高从超[1] 王囡囡[1] 

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038

出　　处：《河北工程大学学报（自然科学版）》2013年第2期20-24,共5页Journal of Hebei University of Engineering:Natural Science Edition

摘　　要：为了计算圆中空夹层钢管混凝土短柱的轴压承载力,采用双剪统一强度理论,分析核心混凝土在轴向压力作用下对内外钢管产生的侧向压应力及内外钢管在水平向的承载应力,通过对双剪统一强度理论公式的推导,计算内外钢管的竖向极限承载应力,并结合核心混凝土的承载力,推导出圆中空夹层钢管混凝土短柱轴压承载力的简化计算公式。采用数值方法对公式进行求解,得出承载力计算值,计算结果与国内文献试验结果吻合良好。To calculate the bearing capacities of axially-loaded short columns of concrete filled double skin steel tubes,the lateral compressive stress the horizontal bearing stress and of the inner and outer steel pipes under the effect of axial pressure on the core concrete were analyzed by according the twin shear unified strength theory.The vertical ultimate bearing stress of the inner and outer steel pipes was calculated by according to the twin shear unified strength theory.Combined with bearing capacity of the core concrete,the simplified formula to calculate the bearing capacity of short column was derived.Results of the theoretical formula solved by numerical method were inline with the experimental data at home and abroad.

关 键 词：钢管混凝土 中空夹层 双剪统一强度理论 轴压短柱 承载力 

分 类 号：TU312[建筑科学—结构工程]