Railway Bridge live loads: Derailment load
Question:
How do you apply Clause 8.5.2 (b) of BD37/01 (pg. A/80) ?
The clause is the specification for Derailment Load for Design RL loading at ULS which can be applied anywhere on the deck.
Answer:
Do note that
I “borrowed” the vehicle definition from the Eurocode to facilitate the derail
load specification. If you can find a more convenient substitute, then all the
better.
Lane Definition
Lane Definition
Vehicle Model
And finally, moving load case
Here is how
the moving load will look like as we trace one of the results.
As the
derail load can happen anywhere on the bridge deck, variable lane definition
can be created to investigate as many positions as possible.