【摘要】 首先论述了砼路面板板下脱空形成的机理和危害,介绍了现在广泛使用的脱空检测方法,即FWD落锤式弯沉仪检测法和GRP探地雷达检测法工作原理及应用,也介绍了正在研究当中的瞬态波检测法和基于频率下降率的人工神经网络识别法.最后对各种方法进行了总结,提出了以后需要开展的工作.更多还原

【Abstract】 The causes and harm of void in the cement concrete pavement were analyzed in this paper.The work principle and application of some the pavement void detective methods such as FWD(Falling weight deflectometer) and GRP(Ground penetrating radar) being widely employed at present were summarized.The neural network technique based on frequency descent rate having advantage in detection the pavement void was discussed.It was also given that remarkable success of transient vibration was used in detection the pavement.The prospect of various methods being used in nondestructive detection the pavement was set forth at last.更多还原