建筑结构学报2012，Vol.33Issue(12)：121-129,9.
反复荷载作用下钢筋与纤维混凝土黏结性能试验研究
Study on bond performance between steel and fiber reinforced concrete under cyclic loading
摘要
Abstract
Experiment on bond performance between reinforcing steel and fiber reinforced concrete under monotonic and cyclic loading was carried out.Meanwhile steel fiber or hybrid of steel and carbon fiber were added to concrete to study the effect of the fibers.There were 48 specimens of short anchorage altogether,12 for monotonic pull out test including 3 specimens of plain concrete,3 specimens of steel fiber reinforced concrete and 3 with added hybrid of steel and carbon fiber and 36 for cyclic loading.Test results indicate that steel fiber and hybrid of steel and carbon fiber can increase peak bond stress and improve bond ductility.Under constant amplitude cyclic loading the degradation of bond performance mainly embodies in the degradation of peak bond stress.Under variable amplitude cyclic loading,the peak bond stress,stiffness of unloading branch and frictional bond stress decrease gradually.Meanwhile,the residual slip increases when loading is unloaded completely.The main influencing factor that affects the bond performance is historical maximum controlling slip and the smaller controlling displacement at early stage has less influence on bond performance under larger controlling displacement.Finally according to the theoretical analysis and testing results,the formative reasons of three typical hysteresis curves under different controlling slip are explained.关键词
混凝土/纤维/钢筋/反复加载试验/黏结性能Key words
concrete/fiber/reinforcing steel/cyclic loading test/bond performance分类
建筑与水利引用本文复制引用
高向玲,李杰..反复荷载作用下钢筋与纤维混凝土黏结性能试验研究[J].建筑结构学报,2012,33(12):121-129,9.基金项目
国家科技支撑计划项目 （）
