An important part of the Northeast Corridor Improvement Project was the installation of more than 400 track-miles of concrete tie track. Since installation, minor problems with track components have been discovered. These problems have included clip fallout, loose inserts, broken insulators and cracked ties. A cooperative investigation was conducted by Amtrak and DOT/FRA, contracting with Battelle's Columbus Laboratories. The primary cause of tie cracking was determined to be high vertical impact loads caused by a few rough wheel profiles on high-speed passenger cars. To improve track performance, remedial projects were initiated by Amtrak. These included the development of a wayside wheel impact load detector to identify specific impact-producing wheelsets. In addition, field tests of more resilient tie pads and a different rail clip design were begun.
Development of Safety Criteria for Evaluating Concrete Tie Track in the Northeast Corridor. Volume 1. Remedial Projects Assessment
1986
120 pages
Report
Keine Angabe
Englisch
Transponders and coded track circuits underpin northeast corridor resignalling
British Library Online Contents | 1994
TRANSPONDERS AND CODED TRACK CIRCUITS UNDERPIN NORTHEAST CORRIDOR RESIGNALLING
Online Contents | 1994
Acela relaunches Northeast Corridor
British Library Online Contents | 1999