方钢管-钢骨高强混凝土轴压短柱承载力分析  

Analysis of Axially-Loaded Short Columns of Square Steel Tube Filled with Steel-Reinforced High-Strength Concrete

作　　者：赵同峰[1] 王连广[1] 赵爽[2] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004 [2]中国人民解放军沈阳军区营房部,辽宁沈阳110018

出　　处：《东北大学学报（自然科学版）》2008年第10期1502-1504,共3页Journal of Northeastern University(Natural Science)

基　　金：辽宁省重点实验室基金资助项目(JG-200601);辽宁省科技攻关项目(20060708)

摘　　要：为了进一步研究方钢管-钢骨高强混凝土轴心受压短柱的特性,综合考虑钢骨存在对混凝土的影响,修正了方钢管混凝土核心约束混凝土应力-应变模型;采用纤维模型法编制了非线性分析程序,计算了荷载-纵向应变关系曲线,并与有关文献的试验曲线进行了对比,计算结果与试验结果吻合得很好.最后,通过对大量计算结果的回归分析,得出了实用的轴压短柱承载力计算公式.To study further the properties of an axially-loaded short column of square steel tube filled with steel-reinforced high-strength concrete, an improved stress-strain model was developed for confined core concrete considering comprehensively the effect of steel-reinforcements on concrete. Fiber modeling was introduced in programming a nonlinear analysis to compute the relationship between loading and longitudinal strain, and the result is compared with the experimental ones in earlier works. The computed results were proved in good agreement with the experimental ones. Based on the regression analysis of a great deal of computed results, the fornmla to calculate the axially-loaded short column of square steel tube filled with steel-reinforced concrete is given.

关 键 词：方钢管混凝土 轴压短柱 全过程分析 正截面承载力 计算公式 

分 类 号：TU398[建筑科学—结构工程]