Applicability and Verification of Unbound Granular Material Elastic Deformation Constitutive Model

doi:10.11908/j.issn.0253-374x.2016.08.013

Home > Archive>Volume 44, Issue 8, 2016 >1227-1233. DOI:10.11908/j.issn.0253-374x.2016.08.013

Applicability and Verification of Unbound Granular Material Elastic Deformation Constitutive Model
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                        10.11908/j.issn.0253-374x.2016.08.013
                    
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                        LI ShaohuiLI Shaohui
Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China
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GUO ZhongyinGUO Zhongyin
Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China
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Clc Number:U416.01
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Abstract:

In order to investigate the applicability of constitutive model to unbound granular material (UGM) base asphalt pavement, strain tensor update algorithm and finite element program of UGM constitutive model were developed and applied to ABAQUS finite element software, and the calculated results were compared with the measured ones in the field. The results show that the calculated convergence modulus distribution of UGM is extremely nonuniform. The calculated bottom strain or stress or the maximum shear stress within the asphalt layer with Uzan model is bigger than the calculated ones with linear elastic or kθ UGM models. The calculated bottom strain of asphalt layer with the Uzan UGM model is the closest with measured value by comparing with the measurements in the field.

Key words:pavement engineering; asphalt pavement; unbound granular material; constitutive model research; field verification

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LI Shaohui, GUO Zhongyin. Applicability and Verification of Unbound Granular Material Elastic Deformation Constitutive Model[J].同济大学学报(自然科学版),2016,44(8):1227~1233

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Received:December 14,2015
Revised:May 23,2016
Adopted:February 26,2016
Online: September 06,2016
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