TY - GEN
T1 - Exploration of alternatives for prestressed concrete monoblock crosstie design based on flexural capacity
AU - Csenge, Matthew V.
AU - Wolf, Henry E.
AU - Dersch, Marcus S.
AU - Edwards, J. Riley
AU - Kernes, Ryan G.
AU - Romero, Mauricio Gutierrez
N1 - Publisher Copyright:
Copyright © 2015 by ASME.
PY - 2015
Y1 - 2015
N2 - Recent North American railway trends signify a transition to increased axle loads and higher train speeds. The use of concrete crossties is common practice in these applications for a variety of reasons, including higher load-carrying capacity and improved ability to maintain proper track geometry. Currently, prestressed concrete monoblock crossties share many geometric and structural properties regardless of manufacturer. For multiple reasons, some manufacturers are investigating the potential benefits of new geometries for crosstie design. One alternative currently being explored is to modify the length and cross-section of the crosstie in order to increase the flexural capacity while using a similar amount of material. In this paper the benefits and implications of these changes will be explored both through theoretical calculations and laboratory testing. This alternative design will be evaluated and compared to concrete crossties representative of those currently found in North America. Comparison of the designs will be based on structural cracking at critical locations along the crosstie. These results were used to provide guidance on critical design parameters for concrete crossties capable of withstanding future loading and performance demands.
AB - Recent North American railway trends signify a transition to increased axle loads and higher train speeds. The use of concrete crossties is common practice in these applications for a variety of reasons, including higher load-carrying capacity and improved ability to maintain proper track geometry. Currently, prestressed concrete monoblock crossties share many geometric and structural properties regardless of manufacturer. For multiple reasons, some manufacturers are investigating the potential benefits of new geometries for crosstie design. One alternative currently being explored is to modify the length and cross-section of the crosstie in order to increase the flexural capacity while using a similar amount of material. In this paper the benefits and implications of these changes will be explored both through theoretical calculations and laboratory testing. This alternative design will be evaluated and compared to concrete crossties representative of those currently found in North America. Comparison of the designs will be based on structural cracking at critical locations along the crosstie. These results were used to provide guidance on critical design parameters for concrete crossties capable of withstanding future loading and performance demands.
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U2 - 10.1115/JRC2015-5683
DO - 10.1115/JRC2015-5683
M3 - Conference contribution
AN - SCOPUS:84936797286
T3 - 2015 Joint Rail Conference, JRC 2015
BT - 2015 Joint Rail Conference, JRC 2015
PB - American Society of Mechanical Engineers
T2 - ASME/ASCE/IEEE 2015 Joint Rail Conference, JRC 2015
Y2 - 23 March 2015 through 26 March 2015
ER -