Kevlar布层间及钢板单搭接黏结性能的试验研究  

Experimental Study on Bonding Performance of Kevlar Interlayer and Kevlar-steel Single-lap Shear Joints

作　　者：朱德举[1] 张晓彤 王润建[3] 徐新华 ZHU Deju;ZHANG Xiaotong;WANG Runjian;XU Xinhua

机构地区：[1]湖南大学土木工程学院,湖南长沙410082 [2]国网郑州供电公司,河南郑州450000 [3]交通运输部公路科学研究院,北京100088 [4]南通东泰新能源设备有限公司,江苏启东226200

出　　处：《湖南大学学报（自然科学版）》2018年第3期82-88,共7页Journal of Hunan University:Natural Sciences

基　　金：国家重点研发计划项目(2017YFC0703006);湖南省战略性新兴产业科技攻关与重大科技成果转化项目(2016GK4016);湖南省重点研发计划项目(2017GK2130)~~

摘　　要：为了研究Kevlar纤维布层间以及纤维布与钢板单搭接的黏结性能,利用MTS微机控制电子万能试验机,分别对双层Kevlar 49纤维布和Kevlar 49纤维布/钢板单搭接剪切接头的力学性能进行测试.结果表明,双层Kevlar 49纤维布、Kevlar 49纤维布/钢板单搭接剪切接头试样的有效黏结长度分别为25mm和50mm.在有效黏结长度范围内,两种单搭接接头的黏结力均随着黏结长度的增加而增加,但增加幅度逐渐减小,当达到有效黏结长度时,黏结力达到最大值;黏结应力随着黏结长度的增加逐渐降低.本研究结果为土木工程结构补强所用Kevlar纤维布的合理黏结长度提供参考数据.In order to investigate the bonding performance of Kevlar fabric layers and that between Kevlar fabric and steel plate,an MTS universal testing machine was used to test the mechanical properties of double-layer Kevlar 49 fabric and Kevlar 49 fabric/steel single-lap shear joints.The results show that the effective bond length of double-layer Kevlar 49 fabric single-lap shear i〇int that of Kevlar 49 fabric/steel single-lap shear joint specimens is 50 mm.Within the effective bond length,bond forces of two types of single-lap shear joints increase with the increasing bond amplitude decreases.The bond force reaches the maximum when the specimens have the effective bond length.However,the bond stresses reduce with increasing bond lengths.The experimental results obtained in this study will provide valid data for determining reasonable bond length offor structural reinforcement in civil engineering.

关 键 词：Kevlar单搭接 破坏形态 有效黏结长度 

分 类 号：TU501[建筑科学—建筑技术科学]