Low-volume roads (LVRs) are typically not expected to withstand large amounts of traffic, consequently they have relatively thin pavement structures. However situations can occur when traffic loading rapidly increases, resulting in rapid structural deterioration of the pavement. Examples include resource exploration and production, new industrial facilities, and military operations. Improved evaluation procedures, including computation of pavement structural responses, are needed to accommodate these scenarios. This paper reports recent advances in methods for computing the structural response of LVRs that incorporate viscoelastic asphalt material behavior and accommodate moving loads. Application of layered elastic analysis, using a Hankel transform with numerical integration methods, is popular in several mechanistic-empirical pavement design procedures. This paper describes an application of the collocation method for approximating the creep compliance and viscoelastic solution, which removes the necessity for approximating the Laplace transform inversion. This was coupled with Boltzmann’s superposition principle for moving loads. Comparisons showed that the proposed approximate method matched well with the viscoelastic solution, and with the full-scale instrumented test data of highway pavements. The measured near surface response of a thin LVR test pavement subjected to military truck loads was then modeled to determine the suitability of the approach for LVR. The modeled results for asphalt strain and vertical pressure in the granular layers showed generally good agreement with the measured instrumentation data. The developed structural response model provided a more realistic simulation of flexible pavement viscoelastic material behavior and accommodation of moving loads with similar computational speed to a conventional layered elastic approach.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Layered Viscoelastic Analysis with Moving Loads of Low-Volume Roadway Pavement Response


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:


    Publication date :

    2023-03-03




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Dynamic Analysis of Multi-Layered Pavement Systems Under Moving Loads

    Chatti, K. / Yun, K. K. | British Library Conference Proceedings | 1995


    Dynamic analysis of multi-layered pavement systems under moving loads

    Chatti,K. / Yun,K.K. / Michigan State Univ.,US | Automotive engineering | 1995


    Dynamic Analysis of Multi-Layered Pavement Systems Under Moving Loads

    Chatti, Karim / Yun, Kyong K. | SAE Technical Papers | 1995


    Towards road pavement response under moving loads

    Barriera, M. / Lebental, B. / Pouget, S. | British Library Online Contents | 2019


    Airport Pavement Response under Moving Dynamic Aircraft Loads

    Kim, Seong-Min / Won, Moon C. / McCullough, B. Frank | ASCE | 2002