Building and Soil Resonance and Period
Building and Soil Resonance and Period
(OP)
When you design structure or do renovations.. do you always check if the soil seismic properties can be in resonance with the structure? I heard tuff rock or stiff soil has resonance approaching that of 2 to 3 storey. And I read that some has to change the properties of the building so it won't be in period resonance with the soil in case there is seismic activity. Do you do it too? What is your computations of the resonance of very stiff soil or tuff rock?






RE: Building and Soil Resonance and Period
I have to admit I haven't. I do run the lateral forces (of course) to see what I have.....but I've never compared periods.
I've calculated the period of a site before, but it wasn't for a rock base. The formula I have used is T=4H/Vs (Where H=thickness of the layer; Vs=shear wave velocity of that layer.)
RE: Building and Soil Resonance and Period
Probably for nuclear sites where they have all kinds of extra info on soil properties and expected seismic events and such.
RE: Building and Soil Resonance and Period
RE: Building and Soil Resonance and Period
Are there specialized equipment like ground penetrating radar (and services) to check the soil or rock properties and periods and possible resonance with the building?
RE: Building and Soil Resonance and Period
RE: Building and Soil Resonance and Period
Is that something that is done in coordination with the geotechnical engineer, or is it done by specialty firms?
RE: Building and Soil Resonance and Period