钢筋混凝土空心圆端墩柱截面弯曲承载力和延性的分析研究  

STUDY ON FLEXURAL CAPACITY AND DUCTILITY OF REINFORCED CONCRETE PIERS WITH HOLLOW ROUND?NOSE SECTION

作　　者：弓俊青[1,2] 朱晞[1] 

机构地区：[1]北方交通大学 [2]包头钢铁学院

出　　处：《土木工程学报》2001年第2期11-16,共6页China Civil Engineering Journal

基　　金：国家自然科学基金资助项目(No.59978001);铁道部科技发展计划项目(No.99G41)

摘　　要：针对空心圆端截面的形状和特征 ,提出了在箍筋约束作用下核心混凝土约束应力的分布和两个主轴方向极限状态控制点位置的确定准则 ;考虑了约束混凝土的应力 应变关系 ,通过分条方法对空心圆端截面的弯曲承载力和延性进行了分析研究 ;分析了轴压比、配箍率。The flexural capacity and ductility of reinforced concrete piers with hollow round?nose section are studied The distribution of compression stress in the core concrete and the criterion to identify a control point in the ultimate limit state are pro?posed in the paper We adopt two kinds of the stress?strain relationship The Mander's one is used for the confined core concrete The finite strip method is used to analyze piers The ultimate moment and the curvature ductility are effected by some significant factors These are the axial load ratio, volumetric ratio of stirrups,length of straight side and thickness of the hollow round?nose section

关 键 词：钢筋混凝土墩柱 空心圆端截面 弯曲承载力 延性 

分 类 号：TU375.301[建筑科学—结构工程]