摘要
为解决碳纤维增强复合材料(CFRP)筋的锚固问题,研制了由粘结材料、金属筒、夹片和锚环组成的CFRP筋复合型锚具,并进行了夹片长度、金属筒长度、夹片夹持位置以及粘结材料对CFRP筋复合型锚具的锚固性能影响试验。结果表明:粘结材料、金属筒长度和夹片夹持位置均对锚固性能有较大影响;夹片的夹持位置应避免在金属筒两端,且宜使金属筒受压区长度小于受拉区长度;Lica-B型粘结材料锚固性能优于Lica-A型粘结材料;复合型锚具各组件协同工作性能良好,夹片与金属筒间无滑移产生;参数合理的该类复合型锚具可有效锚固直径为8mm的CFRP筋。
In order to solve the anchorage problems for carbon fiber reinforced polymer （CFRP） tendons, a wedge-bond anchorage for CFRP tendons was developed. This anchorage consisted of bonding material, metal sleeve, clip and conical barrel. Influence factors of anchorage performance, such as length of clip, length of metal sleeve, clip clamping position and bonding material were illustrated. Results show that bonding material, length of metal sleeve, and clip clamping position will have significant influence on anchorage performance. The clip clamping position should be avoided at both ends of the metal sleeve, and should make compression zone metal sleeve length be less than that of the tension zone length. Meanwhile, the anchorage performance of bonding material Lica-B is better than that of bonding material Lica-A. The each component of wedge-bond anchorage has good cooperative work performance, and there is no relative slip between clip and metal sleeve. The wedge-bond anchorage with reasonable parameters can anchor CFRP tendons with diameter of 8 mm effectively.
出处
《建筑科学与工程学报》
CAS
北大核心
2013年第2期9-14,共6页
Journal of Architecture and Civil Engineering
基金
国家自然科学基金项目(51078170)
关键词
桥梁工程
碳纤维增强复合材料筋
复合型锚具
锚固性能
bridge engineering
carbon fiber reinforced polymer tendon
wedge-bond anchorage
anchorage performance
