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论文类型：期刊论文

发表时间：2014-03-15

发表刊物：CONSTRUCTION AND BUILDING MATERIALS

收录刊物：SCIE、EI、Scopus

卷号：54

页面范围：17-26

ISSN号：0950-0618

关键字：Concrete; Plain round bar; Bond stress-slip relationship; Lateral tension

摘要：Owing to its importance in the design and assessment of reinforced concrete structures, it is essential to study the bond behavior of steel bars in concrete. This paper presents an experimental investigation into the bond behavior of plain round bars embedded in concrete subjected to lateral tension. The experimental results show that the normalized bond strength is a decreasing function of the average lateral tension. When the average lateral tension is 0.8 times the tensile strength of concrete, the normalized bond strength reduces by 54%. As the average lateral tension increases, the slip at the peak bond stress first increases and then keeps constant or decreases, depending on whether specimens are subjected to uniaxial or biaxial lateral tension. Finally, an empirical bond stress-slip relationship is proposed. For different strengths of concrete, bar diameters, and combinations of lateral tensions, the bond stress-slip relationship agrees well with the experimental results. (C) 2013 Elsevier Ltd. All rights reserved.