Impact of Subgrade Resilience Modulus on Heavy Load Asphalt Pavement Mechanical Properties

Tian Xiao; Hui Ran Pi; Can Zhang Jin

doi:10.4028/www.scientific.net/AMM.97-98.28

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 97-98Impact of Subgrade Resilience Modulus on Heavy...

Impact of Subgrade Resilience Modulus on Heavy Load Asphalt Pavement Mechanical Properties

Abstract:

Subgrade resilience modulus is an important mechanical parameter in pavement design. It will directly influence the design result of pavement structure. Using BISAR3 of SHELL design method, the impacts of subgrade resilience modulus on pavement surface deflection, base and subbase bottom tensile stress, surface layer bottom tensile stress of the heavy load asphalt pavement structure were analyzed. And the influencing laws were analyzed, too. The results show that the mechanical and deforming characteristics of heavy load asphalt pavement were influnced significantly by subgrade resilience modulus. With the increasing of subgrade resilience modulus, the pavement surface deflection, base bottom tensile stress would significantly decrease, and fatigue life would be improved.

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Periodical:

Applied Mechanics and Materials (Volumes 97-98)

Pages:

28-31

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.97-98.28

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Online since:

September 2011

Authors:

Tian Xiao, Hui Ran Pi, Can Zhang Jin

Keywords:

Asphalt Pavement, Heavy Load, Road Engineering, Subgrade Resilience Modulus

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References

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