基于探地雷达的软基水闸闸基隐患诊断方法研究

正确认识软正确认识软基水闸地基安全状况对于合理评估水闸工作性态至关重要，但闸基隐患位于结构下部，具有极强的隐蔽性而难以发现。鉴于探地雷达检测技术具有快捷、精细和无损伤等特点，已广泛应用在结构损伤领域。本文以软基水闸常见的底板脱空病害为例，借助水闸室内模型试验，将探地雷达应用于水闸底板脱空隐患诊断，对比优选了探地雷达探测的关键技术参数，分析研究了脱空区域的探地雷达图像特征；并结合工程实际，开展基于探地雷达的软基水闸闸基隐患诊断原型测试。结果表明：基于最佳参数设置的探地雷达闸基隐患检测结果合理可靠，能够较好应用于软基水闸闸基隐患诊断。基水闸地基安全状况对于合理评估水闸工作性态至关重要，但闸基隐患位于结构下部，具有极强的隐蔽性而难以发现。鉴于探地雷达检测技术具有快捷、精细和无损伤等特点，已广泛应用在结构损伤领域。本文以软基水闸常见的底板脱空病害为例，借助水闸室内模型试验，将探地雷达应用于水闸底板脱空隐患诊断，对比优选了探地雷达探测的关键技术参数，分析研究了脱空区域的探地雷达图像特征；并结合工程实际，开展基于探地雷达的软基水闸闸基隐患诊断原型测试。结果表明：基于最佳参数设置的探地雷达闸基隐患检测结果合理可靠，能够较好应用于软基水闸闸基隐患诊断。

英文摘要:

A correct understanding of the safety status of the sluice base on the soft foundation is very important for a reasonable assessment of the sluice's working behavior,but the hidden dangers of the sluice foundation is located at the lower part of the structure,which is extremely concealed and difficult to detect.Based on the rapidity,elaboration and none-damage of ground penetrating radar(GPR),it has been applied extensively in the field of the structural damage domain.This research takes the damage of bottom board of the soft foundation as an example,with the help of in-doormodel experiment,performs GPR scanning test on the damage of bottom board of the soft foundation,compares those selected technical data and analyze the radar image after data processing.Combind with the engineering practice of the physical model it carres out the test of the hidden damage soft foundation.The result indicate that GPR with on the best parameter settings is reasonable and reliable in detecting hidden dangers in the sluice foundation,and can be used for the diagnosis of hidden dangers in the sluice foundation.

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