Understanding Acceleration Response Spectrum of 2023 Turkey Earthquake and Building Stability

The acceleration response spectrum is used for building design in areas affected by earthquake. It is related to the natural (fundamental) period of building and thus, it can provide information on what acceleration (or velocity or displacement) each building would be subjected to during a design earthquake. This video explains how to read and interpret an acceleration response spectrum from the 2023 Turkey earthquake and how to estimate the natural period of different types of building.
To obtain an acceleration response spectrum, the following procedure is used: 1) choose the mass of a linear single degree of freedom (SDOF) system and a value of the damping ratio; 2) select a value of stiffness (k) and excite the system with the selected earthquake motion; 3) record the highest value of acceleration of the output motion of the SDOF; 4) plot this maximum value against the natural period (T); choose a different value of k and repeat the process.

Relevant video:

[UCTUCT]

thanks for such a nice video..but i steel did not understand how we convert time-acceleration (earthquake data) to accelration-period (design spectrum)? Becouse earth data comes with time and time converted to period...in this particular transition what formula we use? have any video to explain pls or planig to make such a video? thanks

[ahmedferdous]

Here this pga are bed rock pga or surface pga??

[Surez]

Nice work but 800m building height is a bit exaggerated. The houses built on the plain are expected to be lower than those built on the rocky ground but the opposite was done in the earthquake zone.

[yigilantis]

I believe the recorded values were not very accurate at the time being. Later some sources corrected the pga. The earthquake reached 0.6 g but never 1.9 g.

[vpryt]

I live in a 14 store building over ground with Vs30=200 m/s
Am I safe or should I go live elsewhere?