玻璃钢/复合材料Issue(4)：14-16,48,4.
芳纶纤维加固钢筋混凝土梁锚固长度的简化计算方法
SIMPLIFIED CALCULATING METHOD OF AFRP BONDING LENGTH FOR REINFORCED CONCRETE BEAMS STRENGTHENED WITH EXTERNALLY BONDED AFRP
田国芝 1王旭荣 1王有志 2张慎伟2
作者信息
- 1. 山东交通职业学院,山东,潍坊,261206
- 2. 山东大学土建与水利学院,山东,济南,250061
- 折叠
摘要
Abstract
Based on the test results of RC beam strengthened with externally bonded AFRP, this paper analyzes the premature failure process of reinforced concrete members strengthened with externally bonded AFRP, the inteffacial shear stress is maximum at the AFRP cut-off point and starts to decay as the distance from the cut-off point is increased, the insufficiency and the high interracial shear stress concentration in the plate containment region are the main causes leading to the failure of reinforced concrete members strengthened with externally bonded AFRP. This paper also analyzes the effective anchorage length of AFRP with the mechanics model of tooth block and crack theory of concrete, works out the calculating formula of least anchorage length of AFRP for strengthening reinforced concrete beam with further simplified correction, and finally puts forward the tolerance strain value of FRP and the measures taken to avoid the premature failure of FRP, which provide theory basis for design and construction of strengthening with externally bonded FRP.关键词
AFRP/加固/应力集中/最小锚固长度Key words
AFRP/strengthening/stress concentration/least anchorage length分类
土木建筑引用本文复制引用
田国芝,王旭荣,王有志,张慎伟..芳纶纤维加固钢筋混凝土梁锚固长度的简化计算方法[J].玻璃钢/复合材料,2009,(4):14-16,48,4.
