IES冲击回波仪在钢筋混凝土桥面局部精确检测的应用分析  

Applications of IES for Local Accurate Detection in Reinforced Concrete Bridge Deck

作　　者：张志清[1] 刘晓姗[1] 丛铖东[1] 汪怡然[1] 

机构地区：[1]北京工业大学交通工程北京市重点实验室,北京100124

出　　处：《交通信息与安全》2012年第5期135-138,共4页Journal of Transport Information and Safety

摘　　要：为了克服电磁波检测仪受磁场干扰的影响,探询钢筋混凝土桥面局部精确检测的可行方法,从IES冲击回波仪的检测原理出发,分析了目前无损检测技术各自的适用性,研究了IES在钢筋混凝土桥面局部精确检测中应用的可行性。IES能够弥补其他无损检测方法的局限和不足,不受被检对象磁场干扰,可以进行单面测试,形成2D或3D图像,直接对反射信号进行分析,对桥面铺装层内部缺陷、脱层、钢筋网保护层厚度不足及钢筋网下沉现象进行精确判定,是1种良好的无损检测方法。Abstract：To overcome the magnetic field interference of electromagnetic wave detector, this paper attempts to seek a viable method for local accurate detection of reinforced bridge deck. From the detection principle of the Impact Echo Scanning （IES）, the paper analyzes the application of the current non-destructive testing technology and studies the appli- cation feasibility of IES in the local accurate detection of reinforced concrete bridge deck. It is found out that the IES can compensate for the limitations and shortcomings of other NDT methods. It can be tested single-sided and can not be dis- turbed by the magnetic field of detected objects. Moreover, it can analyze the reflected signal directly and form 2D and 3D images. Furthermore, it is able to accurately determine the deck cracks, internal delamination, subsidence of steel mesh and the insufficiency of cover. IES method is a good non-destructive testing method.

关 键 词：道路工程 无损检测 IES检测仪 桥面病害 应力回波 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]