00391594

Component

http://onlinepubs.trb.org...s/trr/1983/939/939-004.pdf

https://scholar.google.co...ongi&publication_year=1983

During the last 20 to 25 years, the Long Island Rail Road (LIRR) has designed or participated in the design and construction of various grade elimination projects. The earlier projects (1958-1970) entailed embankment sections with conventional track structure--wood tires, jointed rail, and ballast. The viaduct sections were cast-in-place, reinforced concrete deck with ballast, wood ties, and jointed rail. Since 1970 LIRR has embarked on various innovative track structures and their associated components, which entailed continuous welded rail, elastic fastener clips, direct fixation fastening system, and concrete slab track. Some of the considerations in selection of the new design features were availability of technology, improved ride quality, faster operating speeds, and reduced maintenance costs. Various improved track structures are discussed in this paper and the rationale, design criterion, field measurements, findings, and performance are described.

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

01420438

pp 18-26

1983

Transportation Research Record

Print

Figures (13) ; Photos (9) ; References (7) ; Tables (1)

Concrete bridges; Concrete slab track; Continuous welded rail; Design; Electric power; Electrical systems; Instrumentation; Propulsion; Rail fasteners; Railroad tracks; Test tracks

Long Island Rail Road

Design criteria

Bridges and other structures; Design; Highways; Public Transportation; Railroads; Vehicles and Equipment

TRIS, TRB

Jan 30 1985 12:00AM

• COMPARATIVE CATENARY COSTS-EUROPEAN AND U.S. MAIN LINE RAILROAD ELECTRIFICATION
• CONSTITUTIVE MODELING OF MATERIALS IN TRACK SUPPORT STRUCTURES
• COST/BENEFIT EVALUATION OF ELECTRIFICATION OF A U.S. RAIL NETWORK
• DEVELOPMENT OF RAILROAD TRACK DEGRADATION MODELS
• ELECTRIC LOCOMOTIVES FOR THE 1980S
• FINANCING RAILWAY ELECTRIFICATION
• GEOTECHNICAL EVALUATION OF TRACK STRUCTURE
• RATIONALE AND TECHNOLOGY USED BY AMTRAK TO SELECT CONCRETE TIES FOR USE IN NORTHEAST CORRIDOR
• REHABILITATION OF AMTRAK BALTIMORE AND POTOMAC RAILROAD TUNNEL IN BALTIMORE, MARYLAND