新老混凝土本构关系理论分析研究  

Theoretical Analysis on the Consistent Displacement of New-old Concrete

作　　者：尹健[1] 周士琼[1] 李益进[1] 张松洪[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《长沙铁道学院学报》2002年第3期24-29,共6页Journal of Changsha Railway University

基　　金：铁道部科技专项基金资助项目 (J99Z2 0 6)

摘　　要：通过对 3 1组共 62个试件的普通混凝土、新老混凝土、高性能快速修补混凝土棱柱体全过程受压试验 ,测得了掺PFAC的高性能快速修补混凝土、普通混凝土、新老混凝土的应力应变全曲线并进行了理论分析和比较 ,结果表明 :新老混凝土的应力应变全曲线中变形的变化率是基本一致的 .同时建议了高性能快速修补混凝土、普通混凝土、新老混凝土的应力应变全曲线的统一数据表达式 ,试验曲线与理论曲线吻合较好 .In the paper,the full range compression tests of ordinary concrete,new old concrete and high perfomance rapid repair concrete(HPRRC) prisms in total of 31 groups with 62 specimens are conducted.The complete stress strain curves of HPRRC with PFAC,ordinary concrete,new old concrete were analysed and compared theoretically.The essential consistent displacement of stress strain curve of new old concrete was verified with experimental results.At the same time,the unified numerical expressions of the compressive stress strain curve of the HPRRC,ordinary concrete,new old concrete are put forward.The theoretical curves from calculation are in good agreement with the experimental curves.

关 键 词：本构关系 理论分析 新老混凝土 高性能快速修补混凝土 应力应变全曲线 变形 

分 类 号：TU528[建筑科学—建筑技术科学]