The Road Surface Performance Testing And Assessment Methods And Practice

The road surface performance is an importance index of road performance in town. Right understand on road surface performance can provide technique support to design, construction, maintenance, service, management of road. The road surface perfoemance must be understanded by check and evaluating, the methods of check and evaluating of road surface performance are base for it. The methods of check and evaluating of road surface performance were explored overall and practiced in the paper.First, the problem, purpose, signification of researching were described. Present state about methods of check and evaluating of road performance were sueveied. The main contance of reseaching was goven.Second, index system of check and evaluating of road surface performance were analyzed. The standard and index of check and evaluating were established. The principle and utility of FWD in recent years were introduced.Third, the dynamical characteristics of load on road surface were reseached. Dynamical response of multilayer elastic structure of road surface due to dynamical load and FWD load were investigated. According to the theory of road surface structure dynamics, the dynamic modulus of road surface were analyzed. Dynamical characteristics and parameter of concrete cover layer, basic layer, foundation of road were explored. The evaluating standard on the dynamic modulus of road surface was established.Fourth, the check and evaluating to WUYI road in Jiangsu Changzhou were performed, the road performance was appraised.Last, the summary of the paper was finished. The prospecting for check and evaluating of road performance was goven.