EFFECT OF POWDERY AVALANCHES ON THE DESIGN
AND BEHAVIOUR OF OVERHEAD TRANSMISSION LINES IN AUSTRIA
(1981)Zusammenfassung
Transmission line engineering in the
Austrian Alps often is faced with the action
of avalanches. Most dangerous are powdery
avalanches which are mictures of powdered snow
and air masses spreading out at speeds up to
100 m /sec.
This contribution refers to practical
experience and to the consequences considered
for the design of newer lines. Detailed consideration
is given to loading assumptions
and to a theoretical model propounded by the
author for controlling conductor clashing due
to the wash of air masses initiated by powdery
avalanches.
A practical example illustrated by means
of figures shows the evolution of an unconventional
but economical tower configuration
of relatively high security in case of the
action of powdery avalanches.
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