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Title:

TIMBER CROSSTIES IN RELATION TO TRACK STRUCTURE SYSTEM DESIGN

Accession Number:

00391332

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309036739

Abstract:

The timber crosstie and cut spike rail fastening system has performed admirably for many years on North American railroads. With the introduction of six-axle locomotives, 100-ton freight cars equipped with roller bearing trucks, and concentrated unit train operations, problems with track maintenance arose on sharp curves. Simple logic dictated that the first course of action was to measure the forces that were being applied to the track structure. If the forces could not readily be alleviated through modification in equipment or operations, then the strength of the track structure system would have to be increased to cope with the situation. In this paper a brief review of conclusions derived from track measurements taken in the early 1970s is presented. Results from measurements taken in 1982 and laboratory fatigue tests run in early 1983 on various tie and rail fastening systems were combined with engineering judgment in an economic analysis to select an upgraded tie and rail fastening system for the sharp curves of a brach line that handles 4 to 5 million gross tons of unit train 100-ton car traffic.

Supplemental Notes:

Publication of this paper sponsored by Committee on Track Structure System Design. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

Monograph Title:

Rail papers - 1984

Monograph Accession #:

01419840

Authors:

Scott, J Frank

Editors:

Herman, Scott C

Pagination:

pp 11-18

Publication Date:

1984

Serial:

Transportation Research Record

Issue Number: 953
Publisher: Transportation Research Board
ISSN: 0361-1981

Conference:

63rd Annual Meeting of the Transportation Research Board

Location: Washington District of Columbia, United States
Date: 1984-1-16 to 1984-1-20

ISBN:

0309036739

Media Type:

Print

Features:

Figures (5) ; Photos (4) ; Tables (1)

Old TRIS Terms:

Subject Areas:

Construction; Design; Economics; Highways; Planning and Forecasting; Public Transportation; Railroads; Society; Vehicles and Equipment; I21: Planning of Transport Infrastructure

Files:

TRIS, TRB

Created Date:

Mar 29 1985 12:00AM

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