Modelling of responses and rutting profile of a flexible pavement structure in a heavy vehicle simulator test

A flexible test road structure was tested in a heavy vehicle simulator test to monitor its performance behaviour. Water was added to the structure half-way through the test. The raised water level had a significant effect, decreasing the resilient modulus and increasing the rate of accumulation of permanent deformation. Numerical analyses to simulate the pavement responses have been carried out using both a two-dimensional multi-layer elastic method as well as three-dimensional finite element analysis, with material properties based on field and laboratory testing. Little difference was found between the two methods and both methods generally agreed well with the measurements. The observed accumulation of permanent deformation manifested on the surface as rutting was modelled using two simple work hardening material models; a stress-based model and a strain-based model. The stress-based model was found to be sensitive to slight response changes and had a closer fit than the strain-dependent model.

[1]  Sigurdur Erlingsson,et al.  Evaluation of Permanent Deformation Characteristics of Unbound Granular Materials by Means of Multistage Repeated-Load Triaxial Tests , 2013 .

[2]  Charles W. Schwartz.  Effect of Stress‐Dependent Base Layer on the Superposition of Flexible Pavement Solutions , 2002 .

[3]  Leena Korkiala-Tanttu,et al.  Calculation method for permanent deformation of unbound pavement materials , 2009 .

[4]  Charles R. Marek,et al.  Implication of Aggregates in the Design, Construction, and Performance of Flexible Pavements , 1989 .

[5]  Sigurdur Erlingsson,et al.  Numerical Modelling of Thin Pavements Behaviour in Accelerated HVS Tests , 2007 .

[6]  Fujie Zhou,et al.  Development, Calibration, and Validation of a New M-E Rutting Model for HMA Overlay Design and Analysis , 2011 .

[7]  Sigurdur Erlingsson,et al.  Water impact on the behaviour of flexible pavement structures in an accelerated test , 2013 .

[8]  Sigurdur Erlingsson,et al.  Evaluation of permanent deformation models for unbound granular materials using accelerated pavement tests , 2013 .

[9]  Matthew W Witczak,et al.  EFFECTIVE GRANULAR MODULUS TO MODEL PAVEMENT RESPONSES , 1981 .

[10]  Robert L. Lytton,et al.  DEVELOPMENT AND VALIDATION OF PERFORMANCE PREDICTION MODELS AND SPECIFICATIONS FOR ASPHALT BINDERS AND PAVING MIXES , 1993 .

[11]  Alain Denis,et al.  A new approach for investigating the permanent deformation behaviour of unbound granular material using the repeated loading triaxial apparatus , 2001 .

[12]  D. Fredlund,et al.  Soil Mechanics for Unsaturated Soils: Fredlund/Soil Mechanics for Unsaturated Soils , 1993 .

[13]  Andrew Dawson,et al.  Design of Granular Pavement Layers Considering Climatic Conditions , 2003 .

[14]  Sigurdur Erlingsson,et al.  Moisture sensitivity of unbound granular materials , 2012 .

[15]  D. Fredlund,et al.  Soil Mechanics for Unsaturated Soils , 1993 .

[16]  Robert L. Lytton,et al.  Prediction of Permanent Deformation in Flexible Pavement Materials , 1989 .

[17]  G. Sweere.  UNBOUND GRANULAR BASES FOR ROADS. , 1990 .

[18]  Leif G Wiman.  Accelererad provning av vägkonstruktioner : referensöverbyggnad enligt ATB Väg , 2010 .

[19]  Sigurdur Erlingsson,et al.  Fast layered elastic response program for the analysis of flexible pavement structures , 2013 .

[20]  Jacob Uzan,et al.  CHARACTERIZATION OF GRANULAR MATERIAL , 1985 .

[21]  Sigurdur Erlingsson,et al.  Effect of moisture content on pavement behaviour in a heavy vehicle simulator test , 2013 .

[22]  Sigurdur Erlingsson,et al.  Evaluation of Permanent Deformation Model for Asphalt Concrete Mixtures Using Wheel Tracking and Heavy Vehicle Simulator Tests , 2014 .

[23]  Sam Helwany,et al.  Finite-Element Analyses of Flexible Pavements , 1998 .

[24]  Sigurd Erlingsson,et al.  Accelerated Pavement Testing by HVS : a Trans-national Testing Equipment , 2008 .

[25]  윤태영,et al.  Transportation Research Board of the National Academies , 2015 .

[26]  Ulf Isacsson,et al.  State of the Art. I: Resilient Response of Unbound Aggregates , 2000 .

[27]  Ulf Isacsson,et al.  STATE OF THE ART. II: PERMANENT STRAIN RESPONSE OF UNBOUND AGGREGATES , 2000 .

[28]  Yukinori Matsukura,et al.  Cohesion of unsaturated residual soils as a function of volumetric water content , 2006 .

[29]  Sigurdur Erlingsson,et al.  Modeling of Flexible Pavement Structure Behavior -- Comparisons with Heavy Vehicle Simulator Measurements , 2012 .

[30]  H L Theyse.  Stiffness, Strength, and Performance of Unbound Aggregate Material , 2002 .

[31]  Tong Li,et al.  Nonlinear Parameters for Granular Base Materials from Plate Tests , 2005 .

[32]  Sigurdur Erlingsson,et al.  Heavy Vehicle Simulator tests at VTI , 2014 .

[33]  Pierre Hornych,et al.  Evaluation of the concept of equivalent temperature for pavement design , 2013 .

[34]  Leena Korkiala-Tanttu.  Verification of rutting calculation for unbound road materials , 2009 .

[35]  Sigurdur Erlingsson,et al.  Impact of Water on the Response and Performance of a Pavement Structure in an Accelerated Test , 2010 .

[36]  Sigurdur Erlingsson,et al.  Rutting development in a flexible pavement structure , 2012 .

[37]  Imad L. Al-Qadi,et al.  Difference between In Situ Flexible Pavement Measured and Calculated Stresses and Strains , 2006 .