CFRP钢管混凝土长柱承载力的研究

通过对CFRP钢管混凝土和钢管混凝土两种构件轴压短柱的研究与比较,分析了CFRP钢管混凝土新型构件与钢管混凝土构件的差别与联系,为CFRP钢管混凝土长柱承载力计算打下基础;并对CFRP钢管混凝土长柱进行了试验研究,探讨CFRP钢管混凝土轴压长柱的受力性能以及CFRP对钢管混凝土轴压长柱承载力的提高效果,分析了长细比对CFRP钢管混凝土轴压柱承载力的影响;基于短柱极限平衡法的承载力设计相关公式从理论上推导出CFRP钢管混凝土轴压长柱稳定承载力公式,并与试验结果相比较,验证了理论公式的正确性。

RESEARCH ON BEARING CAPACITY OF LONG CONCRETE-FILLED CFRP-STEEL TUBULAR COLUMNS WITH AXIAL COMPRESSION

A new concrete-filled CFRP-steel tubular column system is introduced and the relationship and the difference between the short concrete-filled CFRP-Steel column and the short concrete-filled steel column are investigated.The experiment of the long concrete-filled CFRP-steel tube columns and the concrete-filled steel tube columns under axial compression was carried on.On these basis,the mechanical properties of the long concrete-filled CFRP-steel tube columns under concentrically compressed are studied and the increment ratio of the load bearing capacity due to the CFRP was improved;the influence of the slenderness ratio on the load bearing capacity of the specimens is analyzed;the equation is derived for estimating the stability strengths of the system and the calculated results accorded with the experimental results.