1. 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

2. 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

3. 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

4. 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

5. 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. From 2010 SCEC Annual Meeting poster … “Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011

6. 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

7. 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

8. EERI Seminar on Next Generation Attenuation Models 2010 SCEC Project: Goulet & Haselton SCEC Ground Motion Simulation Validation (GMSV) Workshop From 2010 SCEC Annual Meeting poster … 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

9. 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

10. Response Spectra OVE (4975 year) Period Sa(T) E-W N-S Sa(T) Rec Sim Med. Rec. Med. Sim. Target

11. 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

12. A.) B.) Comparison of IDR time histories simulated vs recorded: How was the IDR envelope developed?

13. 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

14. EERI Seminar on Next Generation Attenuation Models FY10 USGS Project: van de Lindt & Pei SCEC Ground Motion Simulation Validation (GMSV) Workshop From paper submitted to Earthquake Spectra … “Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011

15. 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

16. EERI Seminar on Next Generation Attenuation Models FY10 USGS Project: van de Lindt & Pei SCEC Ground Motion Simulation Validation (GMSV) Workshop From paper submitted to Earthquake Spectra … 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

17. EERI Seminar on Next Generation Attenuation Models 2004 PEER Project: Bazzurro et al Compared elastic (S a ) & nonlinear (S di ) response spectra, & inelastic-to-elastic spectral ratio (C=S di /S a ) 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

18. EERI Seminar on Next Generation Attenuation Models 2004 PEER Project: Bazzurro et al SCEC Ground Motion Simulation Validation (GMSV) Workshop From PEER Report on Project 1G00 Addenda (pp. 65-112) … “Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011

19. EERI Seminar on Next Generation Attenuation Models 2004 PEER Project: Bazzurro et al SCEC Ground Motion Simulation Validation (GMSV) Workshop From PEER Report on Project 1G00 Addenda (pp. 65-112) … “Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011

20. 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

21. EERI Seminar on Next Generation Attenuation Models FY10 USGS Project: van de Lindt & Pei SCEC Ground Motion Simulation Validation (GMSV) Workshop From paper submitted to Earthquake Spectra … “Summary of Other Validation Methodologies/Applications,” N. Luco, USGS January 10, 2011