冻融环境下CFRP-粘土砖抗剪性能试验研究  

Experimental Study on Shear Behavior of CFRP-Clay Brick in Freeze-Thaw Environment

作　　者：郭乐乐 靳文强[1,2] 张家玮[1] 王琦 赵建昌[1,2] GUO Lele;JIN Wenqiang;ZHANG Jiawei;WANG Qi;ZHAO Jianchang(School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;National and Provincial Joint Engineering Laboratory of Road & Bridge Disaster Prevention and Control, Lanzhou Jiaotong University,Lanzhou 730070, China;China Railway Design Corporation, Tianjin 300142, China)

机构地区：[1]兰州交通大学土木工程学院,兰州730070 [2]兰州交通大学道桥工程灾害防治技术国家地方联合工程实验室,兰州730070 [3]中国铁路设计集团有限公司,天津300142

出　　处：《硅酸盐通报》2020年第3期798-803,818,共7页Bulletin of the Chinese Ceramic Society

基　　金：兰州市科技计划项目(2018-1-18);兰州市人才创新创业项目(2018-RC-57)。

摘　　要：为研究冻融循环对CFRP与烧结粘土砖界面的影响,通过一种简单易行的单面剪切试验方法测定了冻融作用下粘贴了碳纤维布的粘土砖试件的应变值,得到荷载-滑移曲线,分析了冻融循环作用下CFRP与烧结粘土砖粘结性能的变化规律,建立了冻融循环作用下CFRP-粘土砖界面荷载滑移退化模型。通过对比分析,模型预测值与试验值吻合较好。In order to investigate the effects of freeze-thaw cycle on the interface of clay brick masonry strengthened by CFRP.The strain values and the load-slip curve of CFRP and clay brick interface were obtained through single shear test.The change law of bonding performance between CFRP and clay brick under freeze-thaw cycles was analyzed,and a degradation model of interfacial load-slip relationship between CFRP and clay brick was established.Through comparative analysis,the predicted values of the model are in good agreement with the experimental values.

关 键 词：CFRP 烧结粘土砖 冻融循环 荷载滑移 

分 类 号：TB332[一般工业技术—材料科学与工程]