Dokument 1.pdf - ELBA: Das elektronische BASt-Archiv - hbz

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heavy trucks and if the accident situation should be
unfavourable. This is why the BASt has cooperated
with the BMVBS in order to carry out tests with the
aim of providing protective devices which are also
able to prevent very heavy trucks from falling from
bridges. The essential aspects here were the
stipulation of technical boundary conditions for the
development of protective devices by the industry
and the development of suitable test procedures
which are suitable for ensuring the usability on
German bridge structures.
In the scope of this project, it was possible to prove
in collision tests for the first time that protective
devices which achieved the highest containment
level as defined in DIN EN 1317 for very heavy
trucks can be installed on bridge structures in
Germany without there being any need to fear
unacceptable damage being caused to the bridge
domes. It was also possible to measure the forces
which act on the structure in the event of a collision
occurring.
It is the case that a collision test is only an individual
result but these measurements show the extent of
the actions that are applied during the collision
process. The measured values served as the basis
for the making of a recommendation for the
determination of the actions (forces and moments)
which is necessary if protective devices with a very
high containment capacity are to be installed on the
structure. The exact values of the determined action
variables have specific validity for the tested
protective device. The value variables can therefore
be transferred to other protective devices which
have a very high containment capacity rate on
bridges. The recommendation provides for actions
which are around 3-4 times higher than the current
load base specified in DIN technical report 101
“Actions”.