带约束拉杆L形钢管混凝土轴压短柱承载力分析  

BEARING CAPACITY CALCULATION OF L-SHAPE CFT AXIAL COMPRESSION COLUMNS WITH BINDING BARS

作　　者：谭良斌[1] 阳昌 

机构地区：[1]湖南中天建设集团有限公司,湖南株洲412000

出　　处：《钢结构》2013年第8期28-30,46,共4页Steel Construction

摘　　要：采用带约束拉杆L形钢管混凝土截面简化方法,分别以统一理论、极限平衡理论和统一强度理论为基础,并考虑截面长宽比的影响,提出了带约束拉杆L形钢管混凝土轴压短柱承载力计算公式。计算值与试验值比较表明,以统一理论为基础的简化计算方法吻合较好。利用统一理论为基础的简化计算方法,对影响带约束拉杆L形钢管混凝土轴压柱受力性能的因素:拉杆纵向间距、拉杆横向间距、钢管壁厚和钢管屈服强度,进行正交分析,为工程设计及应用提供参考依据。The cross section simplified method of L-shape CFT with binding bars was used, based on separately unified theory, limit equilibrium theory, unified strength theory and taking account of sectional length-width ratio, bearing capacity formula of L-shape CFT axial compression columns with binding bars was proposed. The results show a good agreement of test data with those by the simplified analysis method based on unified theory. The orthogonal analysis was done for the factors influencing the mechanical behaviors of L-shape CFT axial compression columns with binding bars using the simplified analysis method： such as longitudinal distance between binding bars, wall thickness of steel pipe and the yield strength of steel tube, which provided some useful references for design and application of projects.

关 键 词：约束拉杆 L形钢管混凝土柱 简化计算方法 正交分析 

分 类 号：TU398.9[建筑科学—结构工程]