BigInch
Petroleum
- Jun 21, 2006
- 15,161
There is no railroad forum.
While discussing some pipe stress problems today, I wondered what the railroads are doing these days in regards to thermal expansion on high speed lines. I thought I saw that high speed rails are welded together nowdays, ditching the old fishplate bolt-up method that left gaps between rails, which incidently served to take up thermal growth. So questions are,
Are high speed rails welded together.
If so, how is thermal expansion considered.
Are the rails being anchored sufficiently to the tie downs to resist thermal expansion and compression buckling, or is some other method being used?
Only put off until tomorrow what you are willing to die having left undone. - Pablo Picasso
While discussing some pipe stress problems today, I wondered what the railroads are doing these days in regards to thermal expansion on high speed lines. I thought I saw that high speed rails are welded together nowdays, ditching the old fishplate bolt-up method that left gaps between rails, which incidently served to take up thermal growth. So questions are,
Are high speed rails welded together.
If so, how is thermal expansion considered.
Are the rails being anchored sufficiently to the tie downs to resist thermal expansion and compression buckling, or is some other method being used?
Only put off until tomorrow what you are willing to die having left undone. - Pablo Picasso