| This work was supported by the project of comprehensive measures used on promoting SHAOGAN expressway pavement skid-resistant performance. By implement transverse intervening of the vehicle wheel mark(by add pavement marking of transverse intervening), to approach the effect of transverse redistributing of vehicle wheel mark, lowering the speed of pavement skid-resistant performance attenuation, lengthening the function lifetime of expressway and preventive maintenance cycle. It’s meaningful for the releasing of financial pressure of pavement preventive maintenance.This study integrated use of behavioral science, traffic psychology, road design theory, mathematical statistics theory, the frequency of transverse distribution of the wheel track calculation theory, Miner fatigue cumulative damage rule, and the theory of pavement preventive maintenance discipline, researched the effect like the driver’s driving behavior, lateral migration distance of wheel track intervening, transverse distribution coefficient of the wheel track, the standard speed friction index acting on the delaying of anti-sliding performance attenuation effect which caused by lateral intervention and its mechanism.The outdoor test position is DATANG to DANXIA on SHAOGAN expressway(JiangXi direction). In two test section(migration distance of 0.3 m, 0.5 m), four test position(the head and the tail of each test section), five node detection time(after the intervention 0, 1, 2, 4, 6 months).Through the test section, check against sliding section each time node based data contrast, found that the vehicle track horizontal intervention can transform the transverse distribution of the wheel track; By contrasting two kinds of schemes corresponding position of each time node anti-sliding data, found that the 0.3 m migration distance had a more obvious effect of the wheel track migration.For further study on the vehicle wheel track lateral migration effect of intervention of the wheel track of vehicle, the detection section standard velocity variation coefficient of friction for the measured values to study the distribution of the wheel track as index, the coefficient of variation, the greater the more uniform distribution along the cross section of the wheel track. Through four groups of test data comparing, found that after intervention measures, the increase range of F60 variation coefficient value is small, the migration distance of 0.3 m made better effect of the uniform distribution of the wheel track vehicles.In order to research the effect of wheel track lateral intervening on pavement anti-sliding performance, use a standard speed friction along the test section of expectations on behalf of the anti-sliding performance of this time, By four testing section of the F60 expected value changing with time curve to get the delay percentage of pavement anti-sliding performance attenuation at each time point. Comparing the anti-sliding performance attenuation percentage through the test cross section, find that transverse interventions has the effect of delaying pavement anti-sliding performance attenuation, and the effect is better when the migration distance is 0.3 m. To study the extension of pavement longevity after the intervention of the wheel track using the location data instead of time series research method to establish an antisliding attenuation model, and get the road frequency of transverse distribution of the wheel track; use Miner fatigue cumulative damage rule to calculate the residual life of pavement antisliding performance at the worst position, by comparing the cross section of the residual life to measure the effect of life extension, residual life of pavement that has implemented the lateral interventions is longer than the section with none implementation, the function life extension percentage is greater when the migration distance is 0.3 m. |
