تجزیه و تحلیل رفتار لنگرگاه منطقه تقویت کننده عناصر بتنی پیش رونده تحت بارهای استاتیک و چرخه ای

The article briefly discusses about the bond characteristics of different pretensioning reinforcement and some problems of reinforcement anchorage zone. In the present study bond characteristics of three-wire strand under static and cyclic load are investigated. The research revealed that bond stress-slip characteristics of three-wire strand are different from those proposed in Model Code for deformed and plain bars. The bond strength of three-wire strand is not negatively influenced by cyclic load at lower bond stress levels up to 0,7τstat.max.