测量FRP-混凝土界面δ_u的简易方法  

A Simple Method for Measuring the δ_u of FRP-Concrete Interface

作　　者：杨奇飞[1] 熊光晶[1] 

机构地区：[1]汕头大学土木系,汕头515063

出　　处：《武汉理工大学学报》2010年第7期121-124,共4页Journal of Wuhan University of Technology

基　　金：国家科技支撑计划(2006BAJ03A07);广东省自然科学基金(5008283)

摘　　要：纤维复合材料（FRP）-混凝土最大粘结滑移量（δu）的实测一直是个难题。为克服这一难题,作者先分析既有实验研究方法的优缺点,进而设计了一种可稳妥测量δu的＂双拉试件＂。其后又提出了改进引伸计、并用其直接测量δ的简单新方法,并说明其可靠性。经试验研究,提出了δu的确定方法。测试实例显示,在文中实验条件下,δu为0.405-0.515 mm。The measurement of the ultimate slip δu between FRP-concrete interfaces has been a difficult problem.In order to overcome the difficulty,the advantages and disadvantages of existing experimental methods are discussed in this paper firstly.Then a new design named ＂double pull specimen＂ is put forward.A simple method for measuring the δ directly by using modified displacement transducers is proposed and the reliability of the proposed method is indicated.A method for judging is δu also proposed.The test examples performed by the authors show that,δu is about 0.405～0.515 mm under the given experimental conditions.

关 键 词：纤维复合材料 粘结-滑移 最大滑移量 双拉试件 引伸计 

分 类 号：TU375.1[建筑科学—结构工程]