Natural frequency of high rise building
Natural frequency of high rise building
(OP)
Hi all,
To estimate the natural frequency of a tall structure, literature suggest to use the formula 46/H.
This is a general formula derived from tests on real structures. This formula is valid for structure which have been designed to perform under service and ultimate loads.
When I'm undertaking a preliminary design and I'm checking if the core structure is big enough i need to calculate the period based on the size of the core (which might be too small) and on the square root of k\m
Does anyone know a formula to work out the natural frequency of a tall structure simply base on mass and stiffness?
Regards
To estimate the natural frequency of a tall structure, literature suggest to use the formula 46/H.
This is a general formula derived from tests on real structures. This formula is valid for structure which have been designed to perform under service and ultimate loads.
When I'm undertaking a preliminary design and I'm checking if the core structure is big enough i need to calculate the period based on the size of the core (which might be too small) and on the square root of k\m
Does anyone know a formula to work out the natural frequency of a tall structure simply base on mass and stiffness?
Regards





RE: Natural frequency of high rise building
https://etd.ohiolink.edu/!etd.send_file?accession=...
see page 8 of the pdf for the equation. It does require an analysis to see deflection of the structure under lateral loads.