Rail Integrity Experience on the Washington Metro System

Frison, Benjamin; Jeong, David Y.; Washington Metropolitan Area Transit Authority; John A. Volpe National Transportation Systems Center (U.S.)

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Rail Integrity Experience on the Washington Metro System

2016-04-12
By Frison, Benjamin ; Jeong, David Y.

[PDF-905.58 KB]

English

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Details:

Creators:

Frison, Benjamin ; Jeong, David Y.

Frison, Benjamin ; Jeong, David Y. Less -
Corporate Creators:

Washington Metropolitan Area Transit Authority ; John A. Volpe National Transportation Systems Center (U.S.)

Washington Metropolitan Area Transit Authority ; John A. Volpe National Transportation Systems Center (U.S.) Less -
Subject/TRT Terms:

[+]

Defects Dynamics Fracture Mechanics Rail (Railroads) Railhead Rail Joints Railroad Safety Rolling Contact Temperature Wheel Loads
Publication/ Report Number:

JRC2016-5710
Resource Type:

Research Paper
Geographical Coverage:

Washington Metropolitan Area
Corporate Publisher:

American Society of Mechanical Engineers
NTL Classification:

AGR-SAFETY AND SECURITY-SAFETY AND SECURITY;NTL-RAIL TRANSPORTATION-RAIL TRANSPORTATION;NTL-RAIL TRANSPORTATION-Rail Safety;NTL-PUBLIC TRANSPORTATION-PUBLIC TRANSPORTATION;NTL-PUBLIC TRANSPORTATION-Transit Safety and Security;
Abstract:

The Washington Metropolitan Area Transit Authority (WMATA) provides passenger rail service to the nation’s capital. Although the rail system carries only passenger trains, the rail integrity issues that WMATA must manage are similar to those that freight railroads also face. These issues include occurrences of broken rail from internal rail head defects, detection of such defects, and repair of the rail to restore service. Another example is the development of damage on the running surface of the rail, called rolling contact fatigue (RCF). Such surface damage is known to adversely affect the detection of internal rail head defects beneath RCF conditions. While WMATA’s rail integrity issues may be similar to those that freight railroads also encounter, the management of such issues are different, which are also discussed in this paper.

This paper describes the recent experience of broken rails on the WMATA rail system. In addition, results from engineering fracture mechanics analyses are presented to help understand how operational, environmental, design, and maintenance factors influence rail failure.
Format:

PDF
Collection(s):

Volpe Center
Main Document Checksum:

[+]

urn:sha256:33823365b045c36907e361505a0a52f6e162bc893844a6bd221a102af6859e52
Download URL:

https://rosap.ntl.bts.gov/view/dot/12281/dot_12281_DS1.pdf
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Rail Integrity Experience on the Washington Metro System

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