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1
Mar
1980
Technical Reports
Track and Bridge Maintenance Research Requirements
Subject
Bridge and Structures Safety,
Tracks & Structures,
Evaluation
Keywords: Ballast, Subgrade, Cross Ties, Special Track-work, Bolted Joints, Maintenance and Rail
Abstract: This report includes the design of seven research plans in the area of track and bridge maintenance. The railroad industry was surveyed to ascertain the maintenance problems of...
Report Number
FRA/ORD-80/11
Office
RRD
1
Mar
1980
Technical Reports
Track Rehabilitation Research and Development
Subject
Track,
Evaluation
Keywords: Research Requirements, Track, Rail, Ties, Fasteners, Ballast, Track Program
Abstract: The Federal Railroad Administration has established a Track Rehabilitation Research and Development program to better meet its obligations under the Railroad Revitalization and...
Report Number
FRA/OR&D-80/10
Office
RRD
1
Mar
1980
Technical Reports
Rail-Highway Crossing Hazard Prediction Research Results
Subject
Accident Reduction,
Grade Crossing Modeling and Simulation,
Grade Crossings,
Highway-Rail Grade Crossings
Keywords: hazard index; nonlinear regression
Abstract: This document presents techniques for making and using railroad grade crossing hazard indexes (formulas used to compare or rank crossings by level of hazard).
Report Number
FRA-RRS-80-02
Office
RRS
1
Feb
1980
Technical Reports
Sleeve Expansion of Bolt Holes in Railroad Rail Volume I - Description and Planning
Keywords: Cold expansion; crack; fatigue; madrel; rail bolt hole
Abstract: The most predominant failure mode of rails with bolt joints 1s a web crack initiating at the rail bolt hole. This failure mode is of a classical fatigue nature induced by web...
Report Number
DOT/FRA/ORD-80/05.I
Office
RDI-20
1
Feb
1980
Technical Reports
Sleeve Expansion of Bolt Holes in Railroad Rail Volume Ill - Field Experiment ResuIts
Keywords: Cold expansion; Crack; Fatigue; Mandrel; Rail bolt hole; Sleeve; Flashwelds; Vacuum; Crack growth rate
Abstract: The bolt-hole cold-expansion process has been demonstrated by laboratory tests to significantly affect the initiation and propagation of fatigue cracks from rail bolt holes such...
Report Number
DOT/FRA/ORD-80/05.III
Office
RDI-20