Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December...
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Transcript of Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December...
![Page 1: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/1.jpg)
Preliminary PEER-NGAGround Motion Model
Brian Chiou and Robert Youngs
PEER-NGA Workshop 7
December 3, 2004
![Page 2: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/2.jpg)
Data Selection
• Excluded Gorda plate earthquakes – oceanic crust
• Excluded subduction zone earthquakes
• Excluded records in basements
• Excluded records in large structures
• Included dam abutment records
![Page 3: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/3.jpg)
Modeling Concepts
• Source scaling– Magnitude– Aspect Ratio– Depth (focal depth)– Style of faulting
• Distance scaling– Closest distance– Effect of Q for large distances– Hanging Wall (to be examined)
![Page 4: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/4.jpg)
Modeling Concepts (cont’d)
• Site Effects– Function of VS30 (will examine effect of using
categories)– Nonlinear site amplification (using empirical
data guided by modeling results)
– Depth to VS ~ 1 and/or 1.5 km/s
![Page 5: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/5.jpg)
Model Form
• Reference site motion
• Site effects
i
r
z
QRMfHypDARFMfCy
),,(),,,()ln( regionpathtypesource1
jrSrs yDVfyy ),,()ln()ln( 5.130site
![Page 6: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/6.jpg)
Inter-Event Residuals
![Page 7: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/7.jpg)
Intra-event ResidualsPGA Model 1
![Page 8: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/8.jpg)
Intra-event ResidualsPGA Model 2
![Page 9: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/9.jpg)
Intra-event ResidualsSA 1 Hz Model 1
![Page 10: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/10.jpg)
Intra-event ResidualsSA 1 Hz Model 2
![Page 11: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/11.jpg)
Model 1 (magnitude only)PGA on Rock (VS30=600m/s)
![Page 12: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/12.jpg)
Model 2 (magnitude & aspect ratio)PGA on Rock (VS30=600m/s)
![Page 13: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/13.jpg)
Model 1 (magnitude only)1 Hz SA on Rock (VS30=600m/s)
![Page 14: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/14.jpg)
Model 2 (magnitude & aspect ratio)1 Hz SA on Rock (VS30=600m/s)
![Page 15: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/15.jpg)
Model 1 (magnitude only)PGA on Soil (VS30=280m/s)
![Page 16: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/16.jpg)
Model 1 (magnitude only)1Hz SA on Soil (VS30=280m/s)
![Page 17: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/17.jpg)
![Page 18: Preliminary PEER-NGA Ground Motion Model Brian Chiou and Robert Youngs PEER-NGA Workshop 7 December 3, 2004.](https://reader030.fdocuments.net/reader030/viewer/2022032521/56649d605503460f94a40846/html5/thumbnails/18.jpg)