CFRP筋复合型锚具静载测试及黏结应力分布  

THE STATIC TEST OF THE COMPOSITE ANCHOR FOR CFRP TENDONS AND THE ANALYSIS OF THE BOND STRESS DISTRIBUTION

作　　者：陈蓓[1,2] 李十泉[1] 刘荣桂[2] 谢桂华[2] 臧娜 

机构地区：[1]南京理工大学泰州科技学院土木工程学院,江苏泰州225300 [2]江苏大学土木工程与力学学院,江苏镇江212013

出　　处：《玻璃钢／复合材料》2015年第11期5-8,共4页Fiber Reinforced Plastics/Composites

基　　金：国家自然科学基金项目(51478209);江苏省自然科学基金项目(BK20140553);江苏省普通高校研究生科研创新计划(CX09B_04XZ)

摘　　要：进行了CFRP筋复合型锚具静载试验,结果表明该复合型锚具可有效锚固单根为8mm的CFRP筋。通过测试钢管应变,结合公式计算得到了筋材表面黏结应力及其分布情况。该方法简单可靠,对该类型锚具尤其适用。极限状态下,M-7黏结应力分布与BBA模型吻合;M-1、M-2、M-3黏结应力分布与BBA模型不吻合,主要体现在加载端的黏结应力较大,明显高于BBA模型中的残余黏结应力。分析了夹片长度、黏结材料、夹持位置对锚固性能、破坏形式、黏结应力的影响,为同类型大吨位锚具结构的设计提供了依据。The tests of parallel composite anchors for CFRP tendons are carried out. The wedge-bond anchorage with reasonable parameters can anchor 8mm-diameter CFRP tendons effectively. By strain test of steel pipes, the distribution of the bond stress of reinforcement is obtained. This method is simple and reliable, especially for the type of anchor. In the ultimate state, the stress distribution of M-7 is consistent with BBA model. While the stress distribution of M-l, M-2, M-3 is not consistent with BBA model, and is mainly reflected in the loading end. The bond stress is significantly higher than the residual bond stress of BBA model. The results showed that the anchoring performance and bond stress are influenced by gripping position, bonding materials, the length of steel pipe and clip. The results provide a basis for the design of large-tonnage anchor structures of the same type.

关 键 词：CFRP筋 复合型锚具 黏结应力分布 测试方法 

分 类 号：TB332[一般工业技术—材料科学与工程]