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： 《铁道科学与工程学报》 2005年第4期62-67,共6页

摘　　要： 介绍了6根圆形钢套管加固混凝土柱轴心受压承载力的试验概况,研究在工程中常见长细比范围的该构件的力学性能。结果表明,加固构件的承载力随着长细比的增大而降低。编制了非线性分析程序用来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。采用参数分析结果拟合的方法提出了稳定影响系数lφ计算公式,计算公式与试验结果吻合较好,并对该稳定影响系数lφ的取值进行了讨论。 An experimental research for beating capacity of six reinforced concrete columns strengthened by circular steel jacketing subjected to axial loading is carried out. The mechanical property of the specimens is studied for the parameter of slenderness ratio in the familiar ranging. The experimental results show that the beating capacity of the specimens decreases with the increase of the slenderness ratio. A nonlinear analysis program is developed to calculate the mechanical property of specimens. The analysis results are compared with the experimental results, and agree well with each other. Finally, the formula of the stable influence coefficient is obtained from the induction of parameter analysis result. The calculative results agree well with those of the tests, and the value of is discussed.

关 键 词： 加固 圆形钢套管 混凝土柱 稳定承载力

领　　域： [建筑科学]