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级配碎石沥青路面表面裂缝扩展及寿命分析(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2010年02期
Page:
111-114
Column:
研究论文
publishdate:
2010-03-30

Article Info:/Info

Title:
Analysis of surface crack propagation and fatigue life of granular base asphalt pavement
Author(s):
WANG Hongchang12 WANG Libin1 LI Guofen1
College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China; 2.Key Laboratory of Road Structure and Material of Ministry of Transport, Changsha University of Science and Technology, Changsha 410004, China
Keywords:
highway engineering granular materials propagation law finite element method surface crack fatigue life
Classification number :
U416.217
DOI:
10.3969/j.jssn.1000-2006.2010.02.026
Document Code:
A
Abstract:
In this paper, a finite element analysis model of 20node isoparametric elements was established in the commercial FEM software ABAQUS to investigate the effects of the granular base structure on anti-crack. According to the fracture mechanics theory, the surface crack of asphalt pavement with granular base was numerically analyzed. The crack propagation life was evaluated by Paris formula. The anti-cracking effect of granular layer was validated. The analysis indicated that the structure of graded crushed stone can enhance surface cracking fatigue life of asphalt pavement. When the thickness of granular base is 15—25 cm, the pavement has better crack resistance.

References

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Last Update: 2010-05-14