纤维增强复合材料-混凝土-钢双壁空心管短柱的轴压承载力  

AXIAL BEARING CAPACITY OF FRP-CONCRETE-STEEL DOUBLE-SKIN TUBULAR SHORT COLUMNS

作　　者：王娟[1] 赵均海[1] 朱倩[1] 张志超[2] 刘琦[3] 

机构地区：[1]长安大学建筑工程学院,西安710061 [2]长安大学公路学院,西安710061 [3]中国兵器工业北方勘察设计研究院,石家庄050011

出　　处：《工业建筑》2011年第11期130-133,共4页Industrial Construction

基　　金：陕西省自然科学基金项目(SJ08E204);国家自然科学基金项目(50908015)

摘　　要：采用双剪统一强度理论对新型构件纤维增强复合材料(FRP)-混凝土-钢双壁空心管短柱的轴压承载力进行研究,通过考虑中间主应力及相应面上正应力的影响,忽略外层FRP套管对短柱轴力的贡献而只考虑套管对混凝土的套箍作用,提出FRP-混凝土-钢双壁空心管短柱的轴压承载力公式,并对影响因素进行分析。经比较,计算结果与相应文献的试验结果及有限元分析结果吻合较好,表明所推公式具有一定的适用性。Under the twin shear unified strength theory,the research on the axial bearing capacity of FPR-concrete-steel double-skin tubular short columns was carried out.Through considering the influence of intermediate principal stress and the normal stress on the corresponding surface,ignoring the contribution of the outer tube to the axial bearing capacity of the short column and considering the hooping effect of the tube on the concrete,formula of axial bearing capacity of FPR-concrete-steel double-skin tubular short columns was presented and influencing factors were analyzed.The calculation results were compared with the experiment results in relevant documents and the finite element analysis results,well coinciding with each other,which suggests that the inferred formula has a certain applicability.

关 键 词：统一强度理论 中间主应力 FRP-混凝土-钢双壁空心管 轴压承载力 

分 类 号：TU398.9[建筑科学—结构工程]