WHEEL TRACKING TEST METHOD FOR PAVEMENT BY MEANS OF RANDOM TRAVEL WHEEL LOAD AND WHEEL TRACKING TESTER FOR PAVEMENT BY MEANS OF RANDOM TRAVEL WHEEL LOAD

摘要

PROBLEM TO BE SOLVED: To correctly comprehend/evaluate the quality characteristics and deterioration durability strength of pavement material in a test environment where a running wheel load actually acting on a paved road is correctly simulated by executing a wheel tracking test standing on the actual condition of positional variation in a wheel running track of a vehicle that travels the paved road. SOLUTION: A test wheel compared to the wheel of a vehicle traveling on a paved road is caused to repeatedly travel a number of times on a test specimen equipped with a structure of the same quality as a paved road under test and compared to the paved road under test. The test wheel is caused to travel along the same rectilinear track in a traveling direction X. With the test wheel apart from the test specimen after having traveled on the test specimen, the test specimen is moved to and positioned at a moving position changing in a moving direction Y different from the traveling direction X of the test wheel while randomly controlling the moving position and the occurrence frequency of the moving position according to a normal distribution characteristic. After the movement and positioning, the test wheel is caused to proceed to next traveling on the test specimen. COPYRIGHT: (C)2006,JPO&NCIPI