作　　者： ; ;

机构地区： 华南理工大学土木与交通学院土木工程系

出　　处： 《工业建筑》 2007年第8期14-17,共4页

摘　　要： 对18根圆形钢套管加固混凝土柱进行偏心受压试验,研究该构件在不同偏心率和初始受力情况下的力学性能。研究结果表明,加固构件的承载力随着偏心率的增大而降低,初始受力的大小对其影响不显著。通过编制非线性数值分析程序NU分析构件的力学性能,理论分析结果与试验结果的对比表明,两者吻合较好。最后,采用参数分析结果拟合的方法提出偏心率影响系数φe计算公式,计算公式与试验结果吻合较好,并对该偏心率影响系数φe的取值进行讨论。 It was presented an experimental research on 18 reinforced concrete columns strengthened by circular steel jacketing subjected to eccentric loading. It was studied that the mechanical properties of the specimens under different eccentricities and initial eccentric loadings. The experimental results showed that the bearing capacity decreased with the increase of the eccentricities, and the original eccentric loading can be neglected. At the same time, A nonlinear analysis program NU was developed to analyze the mechanical property of specimens. The analysis results were compared with the experimental results, and they agree well with each other. Finally, the formula of the eccentricity influence coefficient φe was obtained from the induction of parameter analysis result. The calculative results agree Well with those of the experiment, and the value of φe was discussed.

关 键 词： 加固 圆形钢套管 混凝土柱 偏心受压

领　　域： [建筑科学]