摘要
为了正确揭示钢筋与混凝土的粘结本构关系 ,本文从理论上推导了钢筋应力、钢筋与混凝土的粘结应力以及钢筋与混凝土的相对滑移之间的相互关系 ,并通过数学分析得到了三者的解析表达式。在此理论研究的基础上 ,根据拔出试验数据 ,给出了随不同位置变化的钢筋与混凝土粘结应力和相对滑移关系 ,推导出了反应这种变化规律的位置函数 ,得到了与端部滑移及位置均有关系的钢筋与混凝土粘结应力的表达式。
The bond-slip relationship is very important to the study of the bond behavior of steel bars and concrete. In traditional research on the relationship of bond stress versus slip between steel bars and concrete, the mean bond stress in the structural specimen and the displacement at the free end or the loaded end were considered. Actually, the bond stress has relation with not only the slip but also the position. For accurately presenting the bond-slip relationship, the mutual relations among stress of steel bars, bond stress and relative slip between steel bars and concrete are first deduced through theoretical analysis, then the equations of stress in steel bars, bond stress, and relative slip are derived mathematically, and verified by pullout test data. On the basis of these equations and the pullout test data, the position functions reflecting the variation of the bond-slip relationship at different position are proposed. The position functions also have something to do with the rust of the steel bars, and they are expressed under the circumstance of severe and slight rust. The bond stress expression obtained related not only to the relative slip, but also to the different position.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2002年第1期1-6,共6页
Journal of Zhejiang University：Engineering Science
基金
浙江大学曹光彪高科技发展重点基金资助项目 ( 2 2 32 96 15 10 2 3)
