Track support is necessary for reliable, resilient railroad track infrastructure. Ability to recover quickly from adversity is a hallmark of the railway industry, and ability to rapidly restore track to service is a main element contributing to resilience of rail service. Poor track support conditions can increase dynamic and impact loading on track superstructure components that can accelerate deterioration of track components, potentially inhibiting the resilience of railroad track. As track components deteriorate or material properties continue to degrade in an area, affected ties become poorly supported and shed their load to better-supported ties. Various problems develop owing to increased tie load, rail stress, and ballast stress, leading to ballast degradation and track or tie vibrations. These problems can be avoided if proper track support is uniformly provided so that no area is overstressed. Several measurement techniques are discussed for evaluating track support: modulus and transient displacements, including track deflection techniques, video cameras, accelerometers, spectral analysis of surface waves for assessment of sublayer moduli, and falling weight deflectometer for deflection and basin analyses. These measurement techniques are compared and contrasted, are illustrated by using a track bearing capacity example, and are demonstrated as useful in assessing tie and track support problems with the goal of improving inspection and maintenance at problem locations. Data from these tests can be useful in designing track and maintenance plans to avoid track support failures, a necessary step to ensure track infrastructure resiliency.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Track Support Measurements for Improved Resiliency of Railway Infrastructure


    Additional title:

    Transportation Research Record


    Contributors:


    Publication date :

    2017-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Concrete railway track support

    Engineering Index Backfile | 1919


    Infrastructure I - Track Measurements

    Aknin, P. | British Library Conference Proceedings | 2008


    A risk-informed decision support tool for the strategic asset management of railway track infrastructure

    Sasidharan, Manu / Burrow, Michael Peter Nicholas / Ghataora, Gurmel Singh et al. | SAGE Publications | 2022

    Free access

    Probabilistic evaluation of the railway track infrastructure components failure risk

    Shtompel Anatoliy / Trykoz Liudmyla / Borodin Dmytro et al. | DOAJ | 2018

    Free access

    INFLUENCE OF TRACK GEOMETRY CONDITION MONITORING ON RAILWAY INFRASTRUCTURE MAINTENANCE PROCESSING

    Gintautas BUREIKA / Gediminas VAIČIŪNAS / Dachuan SHI et al. | DOAJ | 2022

    Free access