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Railroad Track Mechanics & Technology edited by Kerr Hard cover
Railroad Track Mechanics & Technology edited by Kerr
Railroad Track Mechanics & Technology
Proceedings of a Symposium Held at Princeton University
April 21-23 1975
Edited by Arnold D. Kerr
Hard Cover
431 Pages
Copyright 1978
Contents
Preface by R. E. Parsons vii
Introduction by A. D. Kerr ix
Symposium Program xi
GENERAL PAPERS
Getting Down to Basics
L. S. Crane 3
The FRA Track Research Program: Its Origin and Development
W. B. O'Sullivan 9
A Balanced National Transportation Budget- A Growing Possibility
R. E. Briggs 25
TECHNICAL PAPERS
Railroad Track Structure for High-Speed Lines
J. Eisenmann 39
Cause and Effects of Wheel Load Variation
on the High Speed Operating Line
Y. Sato and Y. Satoh 63
Forces and Behavior of Railroad Tracks at Very High Train Speeds; Standards Adopted by SNCF for its Future High Speed Lines (250 to 300 km/h)
A. Prud'homme 79
The Effect of Lateral Loads on Track Movement
C. 0. Frederick 109
Lateral Buckling of Railroad Tracks
due to Constrained Thermal Expansions - A Critical Survey
A. D. Kerr 141
The Experimental Determination of the Axial and Lateral Track-Ballast Resistance
P. Dogneton 171
Recent Investigations of the Dynamic Modulus of Elasticity of the Track in Ballast with Regard to High Speeds
F. Birmann 197
The Current Status of Measurements and Evaluation Techniques for Structure-borne Sound Measured at the Track
L. Steinbeisser 223
The Development of Analytical Models for Railroad Track Dynamics
D.R. Ahlbeck, H.C. Meacham, and R.H. Prause 239
Development of the Prestressed Concrete Tie in the USA
J. W. Weber 265
The Mechanics of Rail Fasteners for Concrete Slab Track
B. BramaZZ283
Requirements for the Reliability Assessment of Railroad Rail in Service
R. K. Steele 303
A Review of Rail-Wheel Contact Stress Problems
B. Paul 323
An Introduction to the Fracture Mechanics of Railroad Rails
D. H. Stone 353
Selection and Performance of Railroad Ballast
G.P. Raymond, P.N. Gaskin, and 0. Svec369
A Contribution to Ballast Mechanics
K. Klugar 387
Deformation of Railway Ballast Under Repeated Loading Conditions
M. J. Shenton 405
Index427
Introduction
The recent revival of interest in our railroads by the public and by the Federal Government is leading to an increasing research effort in a variety of disciplines with the aim of improving the safety and efficiency of railroad transportation.
Railroad track mechanics is one such discipline of interest. Its task is to provide the basis for improved and more reliable performance of the tracks and the rolling stock and for the establishment of rational and economical methods for their maintenance. Its importance is self-evident since the railroad track is presently one of the main causes for limiting the operating speeds of trains and its maintenance is a major expense to many railroads.
The railroad track has been a main cause for limiting the operating speeds of trains for quite some time; essentially since the introduction of the steam locomotive into regular service during the first half of the past century. The subsequent rapid improvements of the locomotive resulted in progressively increasing train speeds and higher wheel loads, which in turn continuously increased the demand for better railroad tracks. Presently many U.S. railroad companies have rolling stock that can move at 90 mph, but very few tracks are suitable for continuous use at these speeds. The situation is essentially the same in other countries, such as Great Britain, the Soviet Union, Japan, France, and Germany.
During the past century both the longitudinal-tie-track and the cross-tie-track were in use; yet the cross-tie-track prevailed. The cross-ties were originally made out of wood. A number of railways also used metal ties. In the past two decades the prestressed concrete tie has been increasingly utilized by many railroads abroad; its use in our country has not yet been established.
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