Impact Load Distribution in Concrete Bridge Ties
Publication: Journal of Structural Engineering
Volume 115, Issue 3
Abstract
Railway tracks and bridges are subjected to impact loading in excess of the static weight of the vehicles because of imperfections in the track and vehicle wheels. Current design criteria for concrete tract ties, as required in Chapter 10 of the American Railway Engineering Association's Manual of Railway Engineering, stipulate an “impact factor” of 150% to be applied to the static weight of the vehicles for design of track ties. There are no such provisions for concrete bridge ties or other bridge deck components, e.g., rails, clips, etc., that comprise an open deck railway bridge. Using a full‐scale open deck railway bridge model with nine precast prestressed concrete ties, an analytical‐experimental study was conducted to establish the percentage of impact load transmitted to the individual ties and the influence of some selected parameters on this load. The results showed that the impact loading transmitted to the ties was largely influenced by the shape and stiffness of rail‐tie pad and was independent of the tie support conditions.
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References
1.
“ADINA: Automatic Dynamic Incremented Non‐Linear Analysis program.” (1981). ADINA Engineering Inc., Watertown, Mass.
2.
Clark, R. A., et al. (1982). “An investigation into the dynamic effects of railway vehicles running on corrugated rails.” J. Mech. Engrg. Sci., 24(2), 65–76.
3.
Dean, F. E., and Harrison, A. D. (1981). “Laboratory study to determine the effects of tie pad stiffness on the attenuation of impact strain in concrete railway ties.” Report by Battelle Columbus Laboratories to the Federal Railroad Administration, Improved Track Structures Research Division, Washington, D.C.
4.
de Josez, B. (1987). “In‐service testing of concrete bridge ties, Bridge 24.0 Winchester Subdivision.” CP Rail Report No. T‐938‐86, Montreal, Quebec, Canada.
5.
Grassie, S. L., and Cox, S. J. (1984). “The dynamic response of railway track with flexible sleepers to high frequency vertical excitation.” Proc., Inst. Mech. Engrs., 198D(7), 117–124.
6.
Grassie, S. L., et al. (1982a). “The dynamic response of railway track to high frequency vertical excitation.” J. Mech. Engrg. Science, 24(2), 77–90.
7.
Grassie, S. L., Gregory, R. W., and Johnson, K. L. (1982b). “The dynamic response of railway track to high frequency lateral excitation.” J. Mech. Engrg. Sci., 24(2), 91–95.
8.
Grassie, S. L., Gregory, R. W., and Johnson, K. L. (1982c). “The dynamic response of railway track to high frequency longitudinal excitation.” J. Mech. Engrg. Sci., 24 (2), 97–102.
9.
Igwe, O. (1983). “Precast prestressed ties on bridge girders—experimental response and design review,” thesis presented to McGill University, at Montreal, Quebec, Canada, in partial fulfillment of the requirements for the degree of Master of Engineering.
10.
Igwemezie, J. O. (1983). “Precast prestressed ties on bridge girders—analytical and experimental load distribution studies,” thesis presented to McGill University, at Montreal, Quebec, Canada, in partial fulfillment of the requirements for the degree of Master of Engineering.
11.
Igwemezie, J. O. (1987). “Dynamic response and impact effects in precast prestressed concrete bridge ties,” thesis presented to McGill University, at Montreal, Quebec, Canada, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
12.
Jenkins, H. H., et al. (1974). “The effect of track and vehicle parameters on wheel/rail vertical dynamic forces.” Railway Engrg. J., Jan., 37–45.
13.
Mirza, M. S., Igwemezie, J. O., and Igwe, O. R. (1984). “Experimental‐analytical study of load distribution characteristics of an open deck bridge system with precast prestressed ties.” Final Report, NSERC PRAI Grant Program Project No. 8203, McGill University, Montreal, Quebec, Canada.
14.
Newton, S. G., and Clark, R. A. (1979). “An investigation into the dynamic effects on the track of wheelflats on railway vehicles.” J. Mech. Engrg. Sci., 21(4), 287–297.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 115 • Issue 3 • March 1989
Pages: 526 - 542
Copyright
Copyright © 1989 ASCE.
History
Published online: Mar 1, 1989
Published in print: Mar 1989
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