Research Progress and Prospect of Structural Reliability of Asphalt Pavement

Mcdowell G R

Department of Civil Engineering, Florida Atlantic University, NewYork,12201, USA

Abstract: To clarify the status quo of structural reliability research in asphalt pavement field, the research advances on the following topics were reviewed, including probability analysis models for reliability of asphalt pavement structure, uncertainty factors, reliability calculation methods, as well as the research focuses for structural reliability. The existing probability analysis models of asphalt pavement structure were comparatively analyzed, the uncertainty factors in design and construction stage were discussed, and the reliability calculation methods were summarized. Finally, the development directions for structural reliability of asphalt pavement were discussed. The results show that the first order second moment method can reliability research for asphalt pavement structure, such as the reliability design indexes, limit states and the probability analysis  models. Further research should be conducted from the following aspects, including time-dependent reliability, system reliability and random reliability. Furthermore, the robust and redundancy analysis should be developed based on the structure reliability.

Keywords: Road engineering; Asphalt road; Overview; Reliability; Probability model; Time-varying; System; Redundancy