eeri seminar on next generation attenuation models scec gmsv workshop: summary of other validation...
TRANSCRIPT
EERI Seminar on Next Generation Attenuation Models
SCEC GMSV Workshop: Summary of Other
Validation Methodologies/Applications
Nicolas Luco, Research Structural Engineer
USGS – Golden, Colorado
SCEC Ground Motion Simulation Validation (GMSV) Workshop – 10 January 2011
EERI Seminar on Next Generation Attenuation Models
Outline
• 2010 SCEC Project: Goulet & Haselton
• LA Tall Buildings Seismic Design Council (LATBSDC): Zareian & Jones
• FY10 USGS External Research Project: van de Lindt & Pei (in collaboration w/ Hartzell & Luco)
• 2004 PEER Project: Bazzurro, Sjoberg, & Luco
• Others?
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
SCEC Ground Motion Simulation Validation (GMSV) Workshop
EERI Seminar on Next Generation Attenuation Models
2010 SCEC Project: Goulet & Haselton
• Comparing responses of multi-story building models subjected to simulated & recorded ground motions
• Using simulated motions whose response spectra are similar to recorded ones, in 3 different ways …
1) One-to-one “matching” (pairwise)
SCEC Ground Motion Simulation Validation (GMSV) Workshop
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
2010 SCEC Project: Goulet & Haselton
• Comparing responses of multi-story building models subjected to simulated & recorded ground motions
• Using simulated motions whose response spectra are similar to recorded ones, in 3 different ways …
1) One-to-one “matching” (pairwise)
SCEC Ground Motion Simulation Validation (GMSV) Workshop
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
2010 SCEC Project: Goulet & Haselton
SCEC Ground Motion Simulation Validation (GMSV) Workshop
Figure 1: Example of record selection for the one-to-one comparison. Five best matches to the El Centro 180 degrees component from 3660 simulated Landers records. Selection is based on optimization of the mean square error relative to the target.
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“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
2010 SCEC Project: Goulet & Haselton
SCEC Ground Motion Simulation Validation (GMSV) Workshop
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
2010 SCEC Project: Goulet & Haselton
• Comparing responses of multi-story building models subjected to simulated & recorded ground motions
• Using simulated motions whose response spectra are similar to recorded ones, in 3 different ways …
1) One-to-one “matching” (pairwise)
2) Sets matched to Uniform-Hazard Spectrum
3) Sets matched to Conditional Mean Spectrum
SCEC Ground Motion Simulation Validation (GMSV) Workshop
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
2010 SCEC Project: Goulet & Haselton
SCEC Ground Motion Simulation Validation (GMSV) Workshop
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Figure 2: The two different types of response spectra used in comparisons 2 and 3 (Building B shown as an example).
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
LATBSDC: Zareian
• Comparing responses of tall building models subjected to simulated & recorded ground motions
• Using motions whose response spectra are “matched” to Uniform-Hazard Spectrum (5 RP’s)
SCEC Ground Motion Simulation Validation (GMSV) Workshop
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
Response Spectra OVE (4975 year)
Period
Sa(T)
E-W
N-S
Sa(T)
RecSimMed. Rec.Med. Sim.Target
EERI Seminar on Next Generation Attenuation Models
LATBSDC: Zareian
• Comparing responses of tall building models subjected to simulated & recorded ground motions
• Using motions whose response spectra are “matched” to Uniform-Hazard Spectrum (5 RP’s)
• Conclusion (partial): Differences in peak story drifts can (mostly) be traced back to differences in response spectra, but phasing differences linger.
SCEC Ground Motion Simulation Validation (GMSV) Workshop
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
A.)
B.)
Comparison of IDR time histories simulated vs recorded:
How was the IDR envelope developed?
EERI Seminar on Next Generation Attenuation Models
FY10 USGS Project: van de Lindt & Pei
• Compared Damage Potential Indicators (DPI’s) for simulated & recorded ground motions
• Used simulated motions (from Frankel, Hartzell, Liu, & Zeng) for Northridge, Loma Prieta, & Izmit recording stations
• Conclusions:
– “Accuracy” of simulations depends on strength of building, in addition to vibration period
– Accuracy can be sensitive to source distance, site class, spectral acceleration level, and ground motion model
SCEC Ground Motion Simulation Validation (GMSV) Workshop
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
FY10 USGS Project: van de Lindt & Pei
SCEC Ground Motion Simulation Validation (GMSV) Workshop
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“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
FY10 USGS Project: van de Lindt & Pei
• Compared Damage Potential Indicators (DPI’s) for simulated & recorded ground motions
• Used simulated motions (from Frankel, Hartzell, Liu, & Zeng) for Northridge, Loma Prieta, & Izmit recording stations
• Conclusions:
– “Accuracy” of simulations depends on strength of building, in addition to vibration period
– Accuracy can be sensitive to source distance, site class, spectral acceleration level, and ground motion model
SCEC Ground Motion Simulation Validation (GMSV) Workshop
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
FY10 USGS Project: van de Lindt & Pei
SCEC Ground Motion Simulation Validation (GMSV) Workshop
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Figure 16. Distribution of Delta-DPI for synthetic motions with accurate Sa value at building period
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
2004 PEER Project: Bazzurro et al
• Compared elastic (Sa) & nonlinear (Sdi) response spectra, & inelastic-to-elastic spectral ratio (C=Sdi/Sa) for simulated & recorded ground motions
• Used simulated motions (from Beresnev, Dreger, Gusev, Hutchings/LLNL, Silva, Somerville/URS, & Zeng) for 20 Northridge recording stations
• Conclusions:
– Biases in shape of elastic response spectra resulted in biases in inelastic-to-elastic spectral ratio (C)
– Systematic differences in variability of C
SCEC Ground Motion Simulation Validation (GMSV) Workshop
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
2004 PEER Project: Bazzurro et al
SCEC Ground Motion Simulation Validation (GMSV) Workshop
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(pp
. 65
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2) …
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
2004 PEER Project: Bazzurro et al
SCEC Ground Motion Simulation Validation (GMSV) Workshop
Fro
m P
EE
R R
ep
ort
on
P
roje
ct
1G
00
Ad
de
nd
a
(pp
. 65
-11
2) …
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
Outline
• 2010 SCEC Project: Goulet & Haselton
• LA Tall Buildings Seismic Design Council (LATBSDC): Zareian & Jones
• FY10 USGS External Research Project: van de Lindt & Pei (in collaboration w/ Hartzell & Luco)
• 2004 PEER Project: Bazzurro, Sjoberg, & Luco
• Others?
SCEC Ground Motion Simulation Validation (GMSV) Workshop
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011
EERI Seminar on Next Generation Attenuation Models
FY10 USGS Project: van de Lindt & Pei
SCEC Ground Motion Simulation Validation (GMSV) Workshop
Fro
m p
ap
er
su
bm
itte
d t
o
Ea
rth
qu
ak
e S
pe
ctr
a …
“Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011