配筋方钢管混凝土柱的抗压性能  

Compression performance of reinforcement high strength concrete-filled steel tubular columns

作　　者：郑亮[1] 靳小俊[1] 董彦莉[1] 

机构地区：[1]中北大学理学院,山西太原030051

出　　处：《江苏大学学报（自然科学版）》2015年第4期469-474,共6页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金青年科学基金资助项目(51208473)

摘　　要：通过配筋方钢管混凝土柱轴压试验及ABAQUS有限元软件对配筋及未配筋方钢管混凝土柱的轴心受压和偏心受压性能进行了非线性数值模拟,研究了2种方钢管混凝土柱在轴心受压和偏心受压下的力学性能、变形能力和破坏形态,给出了2种方钢管混凝土柱数值模拟的荷载-位移曲线和变形形式,分析了配筋对方钢管混凝土柱变形和极限承载力的影响.结果表明:钢管混凝土柱加配筋以后,极限承载能力显著提高,同时变形性能得到一定的改善,但2种方钢管混凝土柱的破坏形态基本相同.随着偏心距的增加,2种钢管混凝土柱的极限承载力和后期的稳定承载力逐渐降低,但配筋钢管混凝土柱的降低幅度比钢管混凝土柱降低幅度小.The nonlinear numerical simulation of the compression performance of reinforcement high strength concrete-filled tubular steel was conducted by reinforced concrete filled steel tubular axial compression test and analysis of ABAQUS. The deformation capacity and the ultimate load capacity and failure modes of high strength concrete-filled tubular steel were investigated under axial and bias compression. The load-displacement curves and the deformation form of numerical simulation were obtained by analysis of ABAQUS. The influence of reinforcement on the deformation and ultimate load capacity was analyzed. The results show that the column failure modes of reinforcement high strength concrete-filled tubular steel and concrete-filled tubular steel are similar,while the ultimate load capacity and the deformation performance are improved by reinforcement. With the increasing of eccentricity,the ultimate bearing capacity and the late stability bearing capacity of concrete-filled steel tubular column and reinforced concrete-filled steel tubular column are gradually reduced,but the reducing amplitude of bearing capacity for the reinforced concrete-filled steel tube is smaller than that for concrete-filled steel tube.

关 键 词：方钢管混凝土 螺旋箍筋 轴压试验 偏心受压 ABAQUS 

分 类 号：TU352.1[建筑科学—结构工程]