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Pavement structural optimization based on multiaxial Mohr-Coulomb yield criterion and its case study on Chongqing test track
Liu Wanqiu 1 *,Zhao yanqing 2,Wang Zheren 2,Zhou Zhi 3
1.Department of Transportation and Logistics, Dalian University of Technology, LiaoNing DaLian 116024
2.Department of Transportation and Logistics, Dalian University of Technology, 116024
3.Department of Civil Engineering, Dalian University of Technology, LiaoNing DaLian 116024
*Correspondence author
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Funding: 教育部博士点基金新教师类(No.20110041120008), 国家自然科学基金青年基金(No.51108061)
Opened online:23 July 2012
Accepted by: none
Citation: Liu Wanqiu,Zhao yanqing,Wang Zheren.Pavement structural optimization based on multiaxial Mohr-Coulomb yield criterion and its case study on Chongqing test track[OL]. [23 July 2012] http://en.paper.edu.cn/en_releasepaper/content/4484587
 
 
The mechanistic analysis of pavement structural performance can be a cost-effective approach for pavement structure design and damage prediction. Its practical application is currently restricted by the low accuracy of the numerical simulations and lack of precise verifying tools. This paper introduces a multiaxial yield criterion for asphalt pavement materials. It is closely associated with Mohr-Coulomb theory, which is proved to fit the actual pavement material triaxial strength tests well. It also considers both the strength difference between tensile and compressive loading and the difference between σ2 and σ3 in the actual stress field of pavement structure. An optimization program has been developed based on the proposed yield criterion using a parallel evolutionary algorithm. The program can help with the structure formation design (especially for rutting resistance) with high efficiency and study the effect of structural coordination on stress distribution. The proposed yield criterion has been verified through the successful application in explaining both the field test results of a test track in Chongqing, China and the case studies from engineering practices, which cannot be achieved using traditional methods.
Keywords:Pavement structure; Optimization; Mohr-Coulomb yield criterion; Test track; rutting resistance
 
 
 

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