Rapid Detection and Evaluation of Pavement Structure Strength Based on Testing System of Laser High Speed Deflectometer
The influencing factors of the detection process of Testing System of Laser High Speed Deflectometer were analyzed,and the influence of detection repeatability,detection speed and detection temperature on the detection results was verified,and correction methods were proposed.A rapid detection and evaluation index and evaluation system for the overall and layered strength of pavement structure were established,and the structural strength of the pavement as a whole was evaluated according to the pavement structure strength index PSSI,and the results of soil foundation modulus inversion and structural equivalent rebound modulus inversion were used to evaluate the structural strength of different layers.Relying on the Pingguang Expressway,Testing System of Laser High Speed Deflec-tometer was used to detect and evaluate the strength of the pavement structure,and the results showed that the total average value of PSSI in the structural condition of Pingguang Expressway was 79.52,and the evaluation was medium;The soil foundation modulus in-version results were relatively good,but the overall equivalent rebound modulus inversion results of the structure were poor,mainly due to the large number of crack diseases and hidden diseases in Pingguang Expressway and the low structural strength caused by the atten-uation of material properties.
Testing System of Laser High Speed Deflectometerstructural strengthmodulus inversionrapid detection
NETL
NSTL
万方数据
维普
