大尺寸钢筋高强混凝土柱的轴心受压性能  

Mechanical properties of large-size high-strength reinforced concrete columns under axial compression

作　　者：符佳[1] 杜修力[1] 张建伟[1] 

机构地区：[1]北京工业大学城市与工程安全减灾省部共建教育部重点实验室,北京100124

出　　处：《建筑结构》2013年第5期77-81,共5页Building Structure

基　　金：国家自然科学基金重点项目(50838001);北京市优秀人才培养项目(20081D051500182);北京市高校中青年骨干人才培养计划资助项目(PHR201108009)

摘　　要：钢筋混凝土构件存在尺寸效应现象,为了解大尺寸钢筋高强混凝土柱的轴心受压性能及其尺寸效应规律,使用40 000kN多功能压力机进行不同几何尺寸和不同配箍率的钢筋高强混凝土柱轴心受压性能试验。在试验基础上,对比分析了不同几何尺寸、不同配箍率的各试件破坏特征、极限承载力和变形。结果表明,大尺寸钢筋高强混凝土柱轴心受压承载力具有一定的尺寸效应,变形能力尺寸效应明显,配箍率对其承载力及变形能力存在不同程度的影响。AIn order to reveal the size effect law and the axial compression performance of large-size high-strength reinforced concrete columns, axial compression experiments of high-strength reinforced concrete columns with different geometric dimensions and stirrup ratio were carried out under 40 000kN multi-function press. Based on the experiments, the failure characteristic, the ultimate bearing capacity and the deformation of large-size high-strength reinforced concrete with different geometric dimensions and stirrup ratio were obtained. The results show that as to high-strength reinforced concrete columns with stirrups under axial loading, size effect exists in maximum carrying capacity and deformation capacity. Stirrup ratio has varying degrees of impact on maximum carrying capacity and deformation capacity.

关 键 词：钢筋高强混凝土柱 配箍率 轴心受压性能 尺寸效应 单调加载试验 

分 类 号：TU398.7[建筑科学—结构工程]