Pedestrian bridge dynamic behaviour
Pedestrian bridge dynamic behaviour
(OP)
Hi
Can anyone teach me how to calculate the natural frequency and resonant frequency for the pedestrian bridge. Any example.
Thank you.
SayGoodDay
Can anyone teach me how to calculate the natural frequency and resonant frequency for the pedestrian bridge. Any example.
Thank you.
SayGoodDay





RE: Pedestrian bridge dynamic behaviour
RE: Pedestrian bridge dynamic behaviour
RE: Pedestrian bridge dynamic behaviour
RE: Pedestrian bridge dynamic behaviour
RE: Pedestrian bridge dynamic behaviour
RE: Pedestrian bridge dynamic behaviour
RE: Pedestrian bridge dynamic behaviour
In your example, could you say that the fundamental frequency is greater than 3 Hz, so it is OK?
Also, I have heard some engineers opine that the alternative formula, f?2.86 ln (180/W), should not be used to justify a fundamental frequency less than 3 Hz. What do you think?
RE: Pedestrian bridge dynamic behaviour
That example is straight from AASHTO. I designed three ped bridges in recent years, including one that is cable-stayed,but to tell you the truth, I've never really thought about the frequencies.
I don't recall what the frequencies were but they met the code and there haven't been any complaints of excessive vibration. All three are heavily travelled.
RE: Pedestrian bridge dynamic behaviour
http:/
Enter Millenium Bridge in search.
http://en.structurae.de/index.cfm
RE: Pedestrian bridge dynamic behaviour
RE: Pedestrian bridge dynamic behaviour