BISOPE series
77- Bridges and Vibration ------------------------------
If
you have taken a basic class on vibration, you may have seen the video of the
collapse of the ‘Tacoma Bridge’ as an example of an accident related to the
damage. It may be the biggest example of an accident, and since fatigue failure accounts for a large proportion of
vibration, we want to hide it, but the collapse of Seongsu Bridge can be said
to be a similar example. Bridges are huge structures, and they clearly have
their own natural frequencies, so they can definitely collapse. If only the
excitation source that causes resonance is properly given…
The natural vibration frequency of a typical bridge is around 1~3Hz, and this characteristic varies depending on the overall length of the
bridge, the type (cable-stayed bridge, suspension bridge, general bridge), the
length of the pier, the cross-section or material of the deck, etc., but if
this characteristic is touched, such as the Tacoma Bridge, it shows a large
reaction (resonance). Damage refers to the loss of girders, destruction of
piers, and subsidence of foundations.
Key!
Bridge, Tacoma Bridge, vibration, TMD, base isolation, earthquake
#vibration
measuring instrument, #frequency setting, #Fmax, #maximum frequency, #sampling
frequency, #sampling rate, #FFT, #3-axis vibration sensor, #acceleration
sensor, #vibration education, #building vibration, #vibration measurement,
#resonance analysis, #resonance measurement, #vibration monitoring, #vibration
noise consulting www.kCBM.kr, https://blog.naver.com/vs72 , https://contents.premium.naver.com/bisope/visope
