Lectures notes for 2010 - KTH

Infrastructure
• Is their ice on the bridge?
• Did the earthquake damage the bridge? …
Wind and Structural Health Monitoring Systems (WASHMS), for example the
New Svinesund Bridge in Sweden instrumentation consists of ([28] p. 5):
• 16 vibrating-wire strain gauges, 4 at arch base and 4 just below the bridge deck (on both
Norwegian and Swedish sides)
• 8 resistance strain gauges (2 at arch base, 2 in a segment just below bridge deck, and 4 at
the crown)
• 4 linear servo accelerometers, installed pair-wise as each new arch segments is
construction; on completion 2 accelerometers moved to the arch mid point and 2 to the
arch’s Swedish quarter point
• 28 temperature gauges (in the same locations as the strain gauges)
• 1 outside air temperature gauge, and
• 1 3-directional ultrasonic anemometer for measuring wind speed and direction at deck level
close to the first support on the Swedish side.
See http://www.byv.kth.se/svinesund/index.htm
The Rion-Antirion Bridge in Greece is monitored by Advitam in France - using
372 measurement channels via the internet[29].
Maguire Infrastructure 13: 59 of 91
maguire@kth.se 2010.03.21 Internetworking/Internetteknik