（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）

［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9cm2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。

［关键词］冲击弹性波； 粘钢混凝土； 无损检测； 钢板脱空

中图分类号：TU746-2文献标识码：A文章编号：1002-848X(2018)15-0084-05

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

Song Fuchun1, Zhao Jie1, Fu Donghua2

(1 School of Traffic Engineering, Shenyang Jianzhu University， Shenyang 110168, China; 2 Sichuan Central Inspection Technology Inc.，  Chengdu 610000, China)

Abstract: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 9cm2 and more than 0-5mm 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.

Keywords:impact elastic wave; steel-bonded concrete; non-destructive testing; steel gap

*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）。

作者简介：宋福春，博士，副教授， Email：Songfch@163.com。