United States Department of Transportation
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners.
As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
i
Determining Track-Induced Lateral Thermal Expansion Forces on a Curved Railway Bridge
-
2020-10-05
[PDF-4.66 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
Abstract:This research studies the development of lateral thermal expansion forces on a curved railway track in general and specifically when the curved track is located on a railway bridge. Geometric alignment of railways often requires railway tracks to be curved for alignment of the right of way as well as safety and ride quality. This curvature is usually defined either by a radius of curvature or by a corresponding degree of curvature. Curved tracks constitute a higher level of complexity in the track’s analysis and design process. Particularly, the presence of curvature on the track introduces multiple sources of force in the lateral (radial) direction, including, but not limited to, lateral thermal expansion, centrifugal action, lateral components of vertical loads, hunting and nosing effects of locomotives, and vehicle curving dynamics. When a curved railway track is constructed on the ground like most curved tracks are, these forces are absorbed by the ballast shoulder and tie-ballast friction or interlocking.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
