DISCUSSION ON STRESSES IN RAILROAD TRACK. PART 2
Observations and tests made on the stretches of welded rail of the Delaware and Hudson Railroad, one section at Albany, and two at Schenectady, were presented. The purpose of the tests was to find changes in length in rail at any place along the stretch, anchorage or restraint at any place along the length and temperature stresses set up in the rail at any place. Readings were taken with strain gages. Temperature of the rail was taken with a thermocouple and potentiometer. Summer and winter measurements were taken. All the welded stretches kept their alignment well even on curves. The longitudinal movement at the ends of the welded stretches and at points along the length due to temperature changes was small. No noticeable movement of the ties in a direction longitudinal of the track was seen. At the end of a welded stretch a tensile or compressive force of considerable magnitude may be transmitted to the adjoining rail. Variable anchorage forces developed in the summer at points due to the presence of under-crossings and viaducts. The flexural stresses developed in the rail by the loads of traffic will be superimposed on the temperature stresses and the two sets of stresses at any point in the height of the rail must be added or subtracted according to their nature.
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Corporate Authors:
American Railway Engineering Association
59 East Van Buren Street
Chicago, IL United States 60605 -
Authors:
- TALBOT, A N
- Publication Date: 1936
Media Info
- Features: Figures; Photos;
- Pagination: p. 954-961
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Serial:
- AREA BULLETIN
- Volume: 37
- Publisher: American Railway Engineering Association
Subject/Index Terms
- TRT Terms: Alignment; Temperature; Temperature measurement; Tension; Welded rail
- Uncontrolled Terms: Tensile stress
- Subject Areas: Materials; Railroads;
Filing Info
- Accession Number: 00052478
- Record Type: Publication
- Source Agency: Association of American Railroads
- Report/Paper Numbers: Proceeding
- Files: TRIS
- Created Date: Jul 15 1976 12:00AM