Rotational capacity of railway prestressed concrete sleeper under static hogging moment
This peer-reviewed conference paper was originally published as Kaewunruen, S and Remennikov, A, Rotational capacity of railway prestressed concrete sleeper under static hogging moment, in Proceedings of the 10th East Asia-Pacific Conference on Structural Engineering and Construction, 3 - 5 August 2006, Bangkok, Thailand, volume 5 Construction and Professional Practices, 399-404. Original conference proceedings are available here.
Railway prestressed concrete sleeper is an imperative component of ballasted railway tracks. Its main function is to help distribute axle loading to subgrade and formation. By nature, the concrete sleeper is subjected to sagging moment at the railseat zone and to hogging moment at the middle section. Although behaviors of concrete sleepers under static loading have been enormously studied, their rotational characteristic and capacity under such loading have never been reported. The emphases of this paper are placed on the static behavior and rotational capacity of a prestressed concrete sleeper under hogging moment. An Australian manufactured concrete sleeper was used in the experiment in accordance with Australian Standards, AS1085.14. LVDT was mounted at the middle span for measuring the deflection. The inclinometers were installed coincident with rail gauge in order to measure the rotations at those positions. Strains at bottom and top fibres under loading were recorded by strain gages. In this paper, the load-deflection curve of the static four-point loading test is presented. Relationship between hogging moment and gauge rotation is underlined. Criteria of the measure based on wheel/gauge-holding capacity are also discussed for determining the rotational capacity of the concrete sleeper.
S. Kaewunruen and A. Remennikov. "Rotational capacity of railway prestressed concrete sleeper under static hogging moment" Faculty of Engineering - Papers.. Aug. 2006.
Available at: http://works.bepress.com/aremennikov/12