斜拉桥CFRP索锚固性能试验  

STUDY ON ANCHORING PROPERTY OF CFRP CABLES FOR STAYED BRIDGES

作　　者：刘荣桂[1] 龚向华[1] 李成绩[1] 吕志涛[2] 梅葵花[2] 

机构地区：[1]江苏大学土木工程系,镇江212013 [2]东南大学土木工程学院,南京210096

出　　处：《工业建筑》2006年第8期29-32,67,共5页Industrial Construction

基　　金：国家自然科学基金资助项目(编号:50178018)

摘　　要：从碳纤维复合材料(CFRP)斜拉索的材性入手,进行了CFRP筋的拉伸试验及相应锚具的锚固性能试验,验证了CFRP筋弹性模量、极限拉伸强度等短期静力性能,并通过这些力学指标与传统的钢索进行对比,得出斜拉桥CFRP索代替钢索的可能性与优越性;通过相应CFRP斜拉索锚具的锚固性能的试验研究,对CFRP筋在不同的粘结长度、不同锚具形式以及不同的填充材料等情况下的拔出荷载进行试验对比,得出影响CFRP筋粘结性能的各种因素。并对其中具有代表性的4组CFRP斜拉索锚具组的荷载-滑移曲线进行分析,得出适用于实桥中CFRP斜拉索合适的锚具形式和锚固长度。CFRP cables have been widely used in different structures. The resistance to corrosion and chemical attack, high strength-to-weight ratio, and ease of handling of these cables make them a better alternative to steel cables in some applications of stayed bridges. But how to anchor the CFRP cables is the biggest obstacle for CFRP cables. To start on material of CFRP cables, tensile test for CFRP cables is done to validate the short-dated characters such as elastic modulus and the utmost tensile intensity. The reason of the components in the test has been analyzed, and through testing the anchoring capacities of the bond-tape anchorage system, it was compared the pullout weight in case of different bonded length, different shapes of anchor and different stuff, and then the factors influencing bond performance were also obtained.

关 键 词：CFRP 弹性模量 极限强度 粘结锚固 

分 类 号：U443.38[建筑科学—桥梁与隧道工程]