冲击弹性波法检测钢板加固混凝土质量试验研究  

Experimental study on quality of steel reinforced concrete measured by impact elastic wave method

作　　者：宋福春 赵洁 付东华 Song Fuchun;Zhao Jie;Fu Donghua(School of Traffic Engineering,Shenyang Jianzhu University,Shenyang 110168,China;Siehuan Central Inspection Technology Inc.,Chengdu 610000,China)

机构地区：[1]沈阳建筑大学交通工程学院,沈阳110168 [2]四川升拓检测技术股份有限公司,成都610000

出　　处：《建筑结构》2018年第15期84-88,104,共6页Building Structure

基　　金：国家自然科学基金资助项目(E080801);辽宁省高速公路管理局专项科研基金资助项目(201408);住建部基金资助项目(K52015006)

摘　　要：对混凝土表面做了不同尺寸和不同厚度的缺陷类型处理,进行粘贴钢板加固,利用冲击弹性波的重复反射和在不同材质内波速的变化以及卓越周期的变化对试件质量进行了研究。试验结果表明,在试件上可以检测到面积在大于9cm^2且厚度大于0.5mm的脱空缺陷的具体位置及尺寸,同时脱空厚度越大、面积越大的内部缺陷越容易被检测出。On the surface of the concrete,the defect types of different sizes and different thickness were treated,and the concrete was strengthened by bonded steel plate. The repeated reflection of the impact elastic wave,the change of the internal wave velocity in different materials and the change of the excellent period were used to study the quality of the specimen. The experimental results show that the specific location and size of the gap defects of above 9 cm^2 and more than0. 5 mm can be detected on the specimen. The greater the thickness of the gap and the larger the area is,the more easy is to be detected.

关 键 词：冲击弹性波 粘钢混凝土 无损检测 钢板脱空 

分 类 号：TU746.2[建筑科学—建筑技术科学]