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Abstract

French standards are widely used in European countries and Francophone countries in Africa, and many overseas projects in which Chinese engineering companies participate adopt French standards. The average axle load conversion coefficient (CCAM) is a key parameter in the calculation of pavement structure. The CCAM value under different input conditions may greatly affect the pavement structure scheme and structure thickness. By analyzing the method of axle load detection and axle load conversion in the French standards, this paper proposed three methods for determining CCAM in French-speaking African projects: using the standard reference value, calculating by axle load detection, simplifying the calculation with reasonable assumptions of representative vehicle type and overload level. By taking a project in Mali as an example, the comparative analysis and inverse fatigue life calculation of inverted pavement structure under different CCAM values were carried out, so as to provide technical reference for theoretical research in France and overseas road projects adopting French standards.

Publication Date

1-18-2024

DOI

10.14048/j.issn.1671-2579.2022.06.007

First Page

41

Last Page

46

Submission Date

May 2025

Reference

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