A 213-meter (700-foot) long soft subgrade section was built under a railroad test track at the Federal Railroad Administration's Transportation Technology Center (TTC), Pueblo, Colorado, to characterize soft subgrade deformations and to test various remedies for the heavy axle load environment. The test track is a 4.3-km (2.7-mile) loop and is used to test various track components under heavy axle freight trains (346 kN or 39-ton axle loads). The type of soil placed in the subgrade is Vicksburg "Buckshot" clay and has an average moisture content of 33 percent (10 percent above the optimum moisture content). Each year, approximately 100 MGT (million gross tons) of traffic is operated on the test track. To date, the following remedy techniques have been or are being tested, including increasing the granular layer thickness, geocell reinforcement and asphalt trackbed stabilization.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Deformations and Remedies for Soft Railroad Subgrades Subjected to Heavy Axle Loads


    Contributors:

    Conference:

    Geo-Denver 2000 ; 2000 ; Denver, Colorado, United States



    Publication date :

    2000-07-24




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Railroad Bridge Construction in Response to Heavy Axle Loads

    Skinner, T. A. / Steele, D. / Engineers' Society of Western Pennsylvania | British Library Conference Proceedings | 1997


    An Overview of Railroad Wheel Rim Failure Modes under Heavy Axle Loads

    Marais, J. / Van Der Walt, J. S. | British Library Conference Proceedings | 2004


    RAILROAD AXLE

    MAKINO TAIZO / KOZUKA CHIHIRO / YAMAMOTO YUICHIRO et al. | European Patent Office | 2019

    Free access

    Highway subgrades

    Newlin, Jr., C.C. | Engineering Index Backfile | 1943


    Railroad axle design factors

    Byrne, R. | Engineering Index Backfile | 1967