钢管混凝土轴压中长柱的极限状态分析  

Analysis on the ultimate state of concrete filled steel tubular moderate long columns with axial compression

作　　者：闻洋[1] 李斌[1] 赵学军[2] 

机构地区：[1]内蒙古科技大学建筑与土木工程学院,内蒙古包头014010 [2]包头钢铁(集团)公司凯捷公司,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2007年第2期175-177,共3页Journal of Inner Mongolia University of Science and Technology

基　　金：内蒙古自然科学基金资助项目(200208012);包头科技攻关项目(2003b003)

摘　　要：为了深入地研究钢管混凝土中长柱极限状态时的受力性能和影响因素,得到较为简捷的承载力计算公式,经过对14根钢管混凝土中长柱承载力的试验研究,发现在试验长细比范围内钢管混凝土柱的承载能力对长细比并不敏感,经分析计算给出了一种新的承载力计算公式.新公式将钢管混凝土中长柱极限状态的荷载分为两阶段计算,符合规范的指导思想,计算结果与试验结果吻合较好,可用于指导工程实际.The mechanical character and influencing factors of medium long colunms were researched by experimenting on fourteen concretefilled steel tubes with five kinds of slenderness ratio. It is found that the bearing capacity of concrete filled steel tubular columns doesn＇t present any corresponding relationship with slenderness ratio. By analysis and calculation, the limit bearing capacity formula of the concrete-filled steel tube of moderate long column subjected to axial compressing was obtained, and the calculated result tallies well with the experimental result. The formula can be used to guide practice.

关 键 词：钢管混凝土 长细比 承载力 

分 类 号：TU312[建筑科学—结构工程]