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directional component of earthquake

directional component of earthquake

directional component of earthquake

(OP)
hi all

i need your help with my case of study , when the quake epicenter placed in a position of south-west of the building that i need to design ,while i have a three seismic records ( one in each direction N-S,W-E,up ) that recorded in a station that has s different directional orientation of that building ...

whats the solution for this case ??

RE: directional component of earthquake

If you're actually trying to do some sort of investigation against that specific earthquake, then either apply the time histories along the rotated directions in your software, or if you don't have that level of control build your structural model at an angle to the program's axis (if that doesn't screw other things up for you).

Since time histories are just a list of discrete data points, you could also just rotate each pair of horizontal data points. You could use linear algebra and attack the problem with a rotation matrix of some sort or throw them all into excel and fake it.

If this isn't an academic study or investigation of actual past performance I'd be concerned that you're trying to model an earthquake to this level of precision.

RE: directional component of earthquake

You have three data sets that you are trying to design a building for. I would take the SRSS of the EW & NS, call this worst case horizontal and add vertical to it. Conseravtive and easy.

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