摘要
选用探地雷达进行路基病害无损检测试验,通过对探地雷达获取数据的解译和资料调查,研究路基下沉、道砟陷槽、路基翻浆冒泥和路桥过渡段填土不均匀沉降等不同类型的路基病害,从雷达信号反射波的波形、能量变化、同相轴等方面总结不同类型路基病害的雷达图像识别特征.选取具体试验地段,进行动力触探试验,并结合路基岩土体参数进行对比分析.试验结果和探地雷达检测结论基本一致,验证了探地雷达无损检测方法的有效性和适用性.
The nondestructive test of the subgrade defect based on the ground penetrating radar method is done through the investigation of information and the acquiisition of the ground penetrating radar data. We do some research on the different subgrade defects, such as subgrade subsidence, subgrade in tank, subgrade rising soil, the uneven settlement of subgrade-bridge transition section soil, etc. We also summarize the features of different subgrade defect radar images from different aspects, such as the reflection wave of the radar signal, the energy change, the event and so on. By combining with the analysis of subgrade parameter, the light dynamic penetration test is done based on specific testing section. The testing results are almost the same with the ground penetrating radar data, which proves the effectiveness and applicability of the nondestructive testing method of ground penetrating radar.
出处
《北京交通大学学报》
CAS
CSCD
北大核心
2013年第4期35-39,共5页
JOURNAL OF BEIJING JIAOTONG UNIVERSITY
基金
国家自然科学基金资助项目(41072256)
教育部高等学校科技创新工程培育基金资助项目(708010)
中央高校基本科研业务费专项资金资助项目(2011YJS254)
关键词
铁路路基
探地雷达
无损检测
路基病害
动力触探
railway subgrade
ground penetrating radar systems
nondestructive testing
subgrade defect
dynamic penetration test
