Research And Application Of Pavement Recessive Disease Diagnosis Base On Ground Penetrating Radar

With the rapid growth of heavy-duty traffic,the scale of road maintenance is rapidly rising,and the road management department is facing heavy maintenance pressure.At the same time,the road condition detection before maintenance work is increasingly recognized as a necessary premise for judging hidden diseases and maintenance countermeasures..At present,the rapid and automatic detection of road surface technology status has been basically popularized and matured,but for deep structural damage stratification,damage degree and structural layer integrity and other indicators,rapid and full-section coverage cannot be achieved.Ground-penetrating radar technology can solve this problem from the means,but there is no standardized and standardized ground penetrating radar detection identification and evaluation method,which makes the detection data use efficiency is low,the accuracy is low,and it can not form hidden inside the road surface.Effective analysis of sexual damage;late data applications only stay in qualitative analysis,and can not quantitatively evaluate the internal technical conditions of the road.This paper proposes a set of road hidden disease identification technology and analysis method based on ground penetrating radar detection data.Through the outdoor detection and indoor test,combined with the actual identification of the disease and the simulated disease,the characteristic shape of the radar map is extracted,and the radar map of the hidden structure of the internal structure of the road is constructed.According to the data obtained from on-site inspection,the distribution characteristics and disease types of road surface diseases and road internal structure diseases were analyzed,and the relationship between the two was discussed.Using the expert survey method to score the types and effects of road internal structure diseases,the road internal structure status evaluation model was obtained,and the existing road condition evaluation system was supplemented and improved.The research of this paper can guide the formulation and implementation of maintenance decisionmaking more scientifically and rationally,and improve the design accuracy and work efficiency of pavement maintenance plan.