Application Research On Nondestructive Detection Of Roadbed Settlement Under The Action Of Traffic

For having continuous, non-destructive testing characteristics ofground-penetrating radar technology used in highway pavement subgradequantitative determination of field improve probing engineers analysisinterprets the level of ground-penetrating radar profiles. Papers basedon a large number of measured data, summarized and summed up the cracksin the pavement subgrade, the abnormal features of a typicalground-penetrating radar profile of the type of loose, void, loose,subsidence and other diseases; using numerical simulation techniques tostudy the detection capabilities of ground penetrating radar technologyfor the above-mentioned diseases and research applied to engineeringpractice, the effective detection of a road section of roadbed subsidenceand the treatment effect.The detection results show that: Void area expressed as a reflectionon the radar section corresponding to the scope and depth of the Void zone,a strong reflected signal, and the formation of a series of shock sub-wavesignal; loose aggregates in filling low, the majority wasloose, causingthe image on the weak reflected signal energy; loose the water-filled case,the disease region of abnormal reflexes; severe pavement layersdeposition zone at the same phase axial offset; transverse crack extendsto the road.anomaly appears on the radar images extends down the verticalposition from the road direct wave bands; Luji Song San diseases withinthe region reflected wave to the axis fuzzy continuous, the reflectedsignal is weak; on an empty location in the image formation of ahyperbolicthe shape of abnormal reflexes, abnormal characteristic hyperbola corresponding to the empty top position.