GroundMotionParameters - Ground-Motion Parameters...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Ground-Motion Parameters Ground-Motion Parameters CEE 431/ESS465 CEE 431/ESS465
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Ground Motion Parameters Ground Motion Parameters Measured by triaxial accelerographs 2 orthogonal horizontal components 1 vertical component Digitized to time step of 0.005 - 0.01 sec For 60 sec record, N = 3 x 60 / 0.01 = 18,000 values Important Characteristics Amplitude Frequency content Duration
Background image of page 2
Ground Motion Parameters Ground Motion Parameters Amplitude Parameters Peak acceleration Peak velocity Peak displacement Sustained maximum acceleration -3-cycle -5-cycle
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Ground Motion Parameters Ground Motion Parameters Amplitude parameters Rock site Rock site Soil site Soil site Highest a max Highest v max
Background image of page 4
Frequency content parameters Fourier spectrum Plot of c n vs ϖ n gives Fourier spectrum c n Ground Motion Parameters Ground Motion Parameters ( 29 φ ϖ n n n n o t c c t x + + = = sin ) ( 1 ϖ n Example from ProShake
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Frequency content parameters Response spectrum Ground Motion Parameters Ground Motion Parameters Examples from ProShake
Background image of page 6
Frequency content parameters Spectral parameters Predominant period Bandwidth Ground Motion Parameters Ground Motion Parameters
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/09/2009 for the course CEE 431 taught by Professor Eberhard during the Winter '06 term at Washington University in St. Louis.

Page1 / 23

GroundMotionParameters - Ground-Motion Parameters...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online