摘要
设计了跨孔雷达检测地下结构缺陷的实验系统,由地下连续墙模型和跨孔雷达系统2部分组成。内置缺陷的地下连续墙模型为钢筋混凝土结构,尺寸5.0 m×3.0 m×4.0 m,为跨孔雷达检测提供测试条件。跨孔雷达系统硬件部分采用步进频率体制,包括网络分析仪、控制主机以及收发天线等部分;软件系统可实现数据采集、显示和储存等功能。实验测试表明,该系统实现了跨孔雷达对地下结构内部缺陷的准确检测,创新性强,有助于激发学生的科研兴趣和探索精神。
An experimental system for underground structure defect detection using crosshole ground penetrating radar(GPR)is developed,which includes a diaphragm wall model and a crosshole GPR system.The diaphragm wall model with embedded defects is a reinforced concrete structure with dimensions of 5.0 m×3.0 m×4.0 m,providing test condition for the system.The hardware of the crosshole GPR adopts step-frequency system and consists of the vector network analyzer,control unit,transmitting and receiving antennas;while the software has the functions of data acquisition,display,and storage.According to test experiment,the crosshole GPR system successfully detects the defects in the underground structure.This novel experimental system is able to stimulate students'research interest and exploring spirit.
作者
覃晖
耿铁锁
谭岩斌
王骞
QIN Hui;GENG Tiesuo;TAN Yanbin;WANG Qian(School of Civil Engineering,Dalian University of Technology,Dalian 116024,China;Shenzhen Research Institute,Dalian University of Technology,Shenzhen 518057,China)
出处
《实验技术与管理》
CAS
北大核心
2021年第12期33-37,共5页
Experimental Technology and Management
基金
国家自然科学基金项目(41904095)
教育部产学合作协同育人项目(201902292002)
中央高校基本科研业务费(DUT21JC29,DUT19RC(4)020)
深圳市中央引导地方科技发展专项资金资助项目(2021Szvup020)。
关键词
地下结构
无损检测
跨孔雷达
实验教学
underground structure
non-destructive testing
crosshole ground penetrating radar
experimental teaching
