点击次数：

论文类型：期刊论文

发表时间：2016-06-01

发表刊物：MATERIALS AND STRUCTURES

收录刊物：SCIE、EI、Scopus

卷号：49

期号：6

页面范围：2097-2111

ISSN号：1359-5997

关键字：Deformed steel bar; Concrete; Loading rate; Lateral pressure; Bond stress-slip relationship

摘要：The bond behaviour of steel bars is greatly influenced by the lateral stresses in surrounding concrete and the loading rate. However, information on the dynamic bond behavior of steel bars in concrete still remains limited. In this paper, a total of 180 pull-out specimens with different strengths of concrete and bar diameters are tested to investigate the effect of the loading rate on the bond behaviour of deformed steel bars in concrete subjected to lateral pressure. Based on the experimental results, the effects of various factors on the ultimate bond strength, the residual bond strength, and the slip at the peak bond stress are evaluated in a quantitative manner. Finally, a bond stress-slip relationship of deformed steel bars considering the loading rate, lateral pressure, the strength of concrete, and the bar diameter is proposed and verified with experimental results.