Study on the Test System of Yunluo Long-life Asphalt Experimental Road

Abstract

In order to grasp the mechanical response of the asphalt concrete pavement structure, on the basis of the layer theory of the asphalt pavement structure and the measurement system, the measured data post-processing application of the asphalt pavement structure was developed. Based on the Yunluo expressway experimental section of Guangdong Province, according to the calculation theory of road structure, the finite element analysis model of the pavement structure was established, and the mechanical properties of the asphalt pavement structure of the experimental section were analysed. It was determined that the layout scheme of the asphalt pavement corresponding structure layer temperature and strain sensor and the road test plan based on FWD. By using FWD as the loading tool, the resistance strain sensor were used to dynamically monitor the transverse and longitudinal strains of the road structural layers in order to grasp the dynamic response of the asphalt pavement. By using the FWD's own deflection detection system, the measured deflection data of the pavement structure were obtained. At the same time, taking into account the processing difficulties of mass measurement data, the postprocessing application of the measured data was developed. The results show that according to the theoretical analysis, the measured system was reasonable, the layout scheme and the test plan were proper. The measured data postprocessing applications can offer a better analysis platform for analysts.