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Pro109-1

REMAINING SERVICE LIFE OF RAILWAY PRESTRESSED CONCRETE SLEEPERS




Author(s): Sakdirat Kaewunruen, Shintaro Minoura, Tsutomu Watanabe, Alex M
Remennikov
Paper category: Proceedings
Book title: proceedings of the International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Service Life of Cement-Based Materials and Structures
Editor(s): Miguel Azenha, Ivan Gabrijel, Dirk Schlicke, Terje Kanstad and Ole Mejlhede Jensen
ISBN:978-2-35158-170-4
e-ISBN: 978-2-35158-173-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 152-161
Total Pages: 10
Language : English


Abstract: Prestressed concrete sleepers (or railroad ties) are structural members that distribute the wheel
loads from the rails to the track support system. Over a period of time, the concrete sleepers
age and deteriorate in addition to fully experiencing various types of static and dynamic
loading conditions, which are attributable to train operations. Recent studies have established
two main limit states for the design consideration of concrete sleepers: ultimate limit states
under extreme impact and fatigue limit states under repeated probabilistic impact loads (low
and high cycles). It was noted that the prestress level has a significant role in maintaining the
high endurance of the sleepers under low to moderate repeated impact loads. Based on
extensive field investigations and experimental tests, this paper presents a variation of static
and dynamic load condition of railway concrete sleepers in revenue services. It presents the
limit states involving in testing and evaluating for the remaining service life of railway
prestressed concrete sleepers. Experimental results are also highlighted to demonstrate the
deterioration and toughness of the sleepers after services.


Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00


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