基于冲击弹性波的全梁CT无损检测技术研究  

Research of Non-Destructive Testing Technology of Whole Beam CT Based on Shock Elastic Wave

作　　者：庄康 ZHUANG Kang(Tiezheng Testing Technology Co.Ltd.,Jinan Shandong 250014,China;China Railway 14th Bureau Group Co.Ltd.,Jinan Shandong 250014,China)

机构地区：[1]铁正检测科技有限公司,山东济南250014 [2]中铁十四局集团有限公司,山东济南250014

出　　处：《铁道建筑技术》2023年第1期48-50,共3页Railway Construction Technology

基　　金：2018年山东省第二批技术创新项目(201820701006)。

摘　　要：阐述了弹性波CT技术的特点和基本原理,并在传统CT技术的基础上研究了一种全梁CT无损检测技术和方法;通过全梁CT无损检测技术和方法对预应力混凝土箱梁的顶板、底板、腹板进行检测,建立数学模型,利用计算机反演技术将采集的数据转化为缺陷分布云图,分析云图中显示的缺陷分布情况;与梁体的实际状况进行比对,验证了全梁CT无损检测技术在桥梁结构缺陷检测中的可行性与适用性,为今后这一领域的检测提供了参考和依据,对桥梁工程施工质量的把控具有重要意义。The paper expounds the characteristics and basic principles of elastic wave CT technology,and studies a whole beam CT non-destructive testing technology and method on the basis of traditional CT technology.The top plate,bottom plate and web of prestressed concrete box girder are detected by the whole beam CT non-destructive testing technology,and the mathematical models are established,the collected data is converted into defect distribution cloud maps using computer inversion technology,the distribution of defects displayed in the cloud maps is analyzed.The actual conditions of the beam are compared to verify the feasibility and applicability of the whole beam CT non-destructive testing technology in the detection of bridge structural defects,which can provide a reference and basis for future testing in this field,and it is of great significance to control the quality of bridge construction.

关 键 词：全梁CT 冲击弹性波 混凝土内部缺陷 断层扫描 波速 

分 类 号：U446.1[建筑科学—桥梁与隧道工程]