Journal of South China University of Technology (Natural Science Edition) ›› 2015, Vol. 43 ›› Issue (4): 41-47.doi: 10.3969/j.issn.1000-565X.2015.04.007

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Conversion of Dynamic Axle Load on Asphalt Pavement Considering Friction Coefficient

Han Ding Shen Fei Li Ling-lin   

  1. School of Transportation Engineering，Hefei University of Technology，Hefei 230009，Anhui，China
  • Online:2015-04-25 Published:2015-03-03
  • Contact: 韩丁(1982-)，男，博士，副教授，主要从事路基路面工程研究． E-mail:handing@hfut.edu.cn
  • About author:韩丁(1982-)，男，博士，副教授，主要从事路基路面工程研究．
  • Supported by:
    Supported by the National Natural Science Foundation of China(51008109，51408173) and the Science Project of Anhui Provincial Department of Housing and Urban-Ｒural Developpment of China(2013YF-01)

PDF

526

Abstract: In order to investigate the dynamic axle load conversion in complex conditions，the dynamic response of as-phalt pavement subjected to moving load is analyzed，the validity of the numerical calculation and the influence of vehi-cle characteristics are discussed，and a conversion formula of the dynamic axle load is set up． Then，based on the two-dimension Lamb problem，the effectiveness of the numerical calculation is verified，and a three-dimension dynamic nu-merical model of asphalt pavement with rigid base is established to analyze the effects of vehicle speed，road surface fric-tion coefficient and axle load． The results show that，when the vehicle moves at a constant speed，both the axle load and the road surface friction coefficient remarkably influence the dynamic response of pavement; and that the conversion co-efficient of the dynamic axle load considering the friction coefficient is significantly greater than that of the static axle
load． Moreover，it is found that the three-dimension finite element model，which takes into consideration various affec-
ting factors of the vehicle and the asphalt pavement，accords well with the actual stress state of asphalt pavement struc-
ture; and that the presented conversion formula is feasible in improving the current design specifications．

Key words: asphalt pavement, moving load, flexural stress, axle load conversion, numerical calculation