A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Performance of Mechanically Stabilized Rail Track
The use of geogrid within the sub-ballast or ballast layers of a roadbed section has become increasingly common in recent years. One of the documented benefits in the use of geogrids within the roadbed section includes increased track service life. Research at a new staging track section was conducted to evaluate the performance of geogrid stabilized tracks and develop performance data useful for future projects. Mini-prisms were mounted on rail ties to monitor vertical track deflection and one earth pressure cell was installed within the subgrade and immediately adjacent to the sub-ballast of each test section. All test sections are 50 feet in length and earth pressure cells were placed at the center of each test section. Three of these test sections were mechanically stabilized with punched and drawn geogrids, and one section had no geogrid and served as the control section. The geogrid was placed on finished subgrade, followed by 8 inches of sub-ballast and 12 inches of new ballast. Construction of the staging tracks was completed in August 2011 and the rail line opened to traffic in September 2011. This paper highlights the construction and instrumentation of these test sections and the results obtained to date. Results highlight the continued reduction of stress afforded by the incorporation of integrally formed, punched and drawn geogrid.
Performance of Mechanically Stabilized Rail Track
The use of geogrid within the sub-ballast or ballast layers of a roadbed section has become increasingly common in recent years. One of the documented benefits in the use of geogrids within the roadbed section includes increased track service life. Research at a new staging track section was conducted to evaluate the performance of geogrid stabilized tracks and develop performance data useful for future projects. Mini-prisms were mounted on rail ties to monitor vertical track deflection and one earth pressure cell was installed within the subgrade and immediately adjacent to the sub-ballast of each test section. All test sections are 50 feet in length and earth pressure cells were placed at the center of each test section. Three of these test sections were mechanically stabilized with punched and drawn geogrids, and one section had no geogrid and served as the control section. The geogrid was placed on finished subgrade, followed by 8 inches of sub-ballast and 12 inches of new ballast. Construction of the staging tracks was completed in August 2011 and the rail line opened to traffic in September 2011. This paper highlights the construction and instrumentation of these test sections and the results obtained to date. Results highlight the continued reduction of stress afforded by the incorporation of integrally formed, punched and drawn geogrid.
Performance of Mechanically Stabilized Rail Track
Kwon, Jayhyun (author) / Wayne, Mark H. (author) / Cecil, Shelly (author)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
Geo-Congress 2013 ; 1420-1428
2013-02-25
Conference paper
Electronic Resource
English
Performance of Mechanically Stabilized Rail Track
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