Hi all,
BRT has numbers of spiral definition, such as cubic parabolic, bloss, cosine, sinusolid and etc. provided
Any relevant information for which equation it used for each type?
All information about transition curves we use you can find in Wikipedia.org.
www.engsoc.org/.../chapter6%20-%20Railway%20Track%20Design.pdf
en.wikipedia.org/.../Clothoid
de.wikipedia.org/.../Blossbogen
de.wikipedia.org/.../Sinusoid
en.wikipedia.org/.../Parabola
If you need definitions of subtypes please ask
Best regrads
Gunnar Pech
Bentley Systems
Answer Verified By: Jing Jing
Hi Gunnar,
Thanks.
Wondered you have more information in Cubic Parabola; bi-quadratic parabola and cosine?
jing jing (o'.'o)
What exactly information do you need? Cubic Parabolas as transitions are very old fashioned but easy to calculate wit pocked calculators. Modern transitions are: Clothoids, Bloss, Sinusoids, Cosines and the Viennese transition (patented by Austrian Railways). For any of these types you find the formulas in the Web. There no secrets behind.
Hi Jing Jing,
You may find this article useful for more in-depth info re. transition curves :).
link.springer.com/.../s12544-013-0119-8
LiPeng, Denmark