revised-draft-senate-bill-24-post-education-committee
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revised-draft-senate-bill-24-post-education-committee
REVISED ANALYSIS OF ID ROCK SIMULATIONS FOR THE NGA-E PROJECTReport to the PEER-Lifelines Program. Project lC02dNancy Collins, Robert Graves, and Paul revised-draft-senate-bill-24-post-education-committeel Somerville URS Corporation, Pasadena Office April 13, 2006INTRODUCTIONThis report compares the results of NGA-E ID rock simulations of strong ground motion using three different procedures. The simulation procedures are those of PEA (Silva et al., 2002), ƯNR (Zeng and Anderson, 1994; Zeng, 2002), revised-draft-senate-bill-24-post-education-committeeand URS (Graves and Pitarka, 2004). The three simulation procedures analyzed in this report use significantly different approaches to the representatirevised-draft-senate-bill-24-post-education-committee
on of the earthquake source, seismic wave propagation, and site response.The simulations described in this report were generated following the Draft PREVISED ANALYSIS OF ID ROCK SIMULATIONS FOR THE NGA-E PROJECTReport to the PEER-Lifelines Program. Project lC02dNancy Collins, Robert Graves, and Paul revised-draft-senate-bill-24-post-education-committees summarized in Table 1. The simulations were performed by Walt Silva at Pacific Engineering and Analysis (PEA), Yuehua Zeng at the University of Nevada at Reno (UNR). and Robert Graves, Arben Pitarka and Nancy Collins (ƯRS Corporation Pasadena). This report revises the results that were presented i revised-draft-senate-bill-24-post-education-committeen the report entiled “Analysis of ID Rock Simulations for the NGA-E Project," dated October 22. 2004. The purpose of the revision is to correct errorsrevised-draft-senate-bill-24-post-education-committee
that were found in the ƯRS ground motion simulations. These errors are described in Appendix 1 of this report. Collection of these errors does not suREVISED ANALYSIS OF ID ROCK SIMULATIONS FOR THE NGA-E PROJECTReport to the PEER-Lifelines Program. Project lC02dNancy Collins, Robert Graves, and Paul revised-draft-senate-bill-24-post-education-committeeese three groups (PEA, UNR, URS). The purpose of the analyses is to aid in the identification of those aspects of the simulations that may provide a reliable basis for addressing the scaling issues that are needed to guide the development of empirical models. The issues, listed in the order in which revised-draft-senate-bill-24-post-education-committee they are numbered in Table 1, are:1Magnitude scaling2and 3. Distance scaling (not addressed directly in this report)4Period scaling5Directivity scalirevised-draft-senate-bill-24-post-education-committee
ng6Static stress drop scaling7Buried I shallow rupture scaling8Hanging wall / foot wall scalingA concise summary of the results of this work is providREVISED ANALYSIS OF ID ROCK SIMULATIONS FOR THE NGA-E PROJECTReport to the PEER-Lifelines Program. Project lC02dNancy Collins, Robert Graves, and Paul revised-draft-senate-bill-24-post-education-committee the simulation procedures entitled “Validation Guidelines for Numerical Simulation of Ground Motion on Rock Conditions,” dated July 10, 2003 (Abrahamson and Chiou, 2003). The six events included in the validation program are: 1971 Imperial Valley, 1989 Loma Prieta, 1992 Landers, 1994 Northridge, 19 revised-draft-senate-bill-24-post-education-committee95 Kobe, and 1999 Kocaeli. The validation of the three simulation procedures used in the 1-D simulations is described in Collins et al. (2006).Table 1revised-draft-senate-bill-24-post-education-committee
. Combinations of events needed to address specific scaling issues.1. Mag Scaling2. Dis Scaling 0-10 km3. Dis s c 1 1 D 8 70-200 k m4. Petiod ScalingsREVISED ANALYSIS OF ID ROCK SIMULATIONS FOR THE NGA-E PROJECTReport to the PEER-Lifelines Program. Project lC02dNancy Collins, Robert Graves, and Paul revised-draft-senate-bill-24-post-education-committeegSA6.5Med900XXXXXXXSB6.5Low900XXsc6.5High900XSD7Med900XXXXXSE7.5Med900XXXXXXSF7.5Low900XSG7.5High’900XXSH7.8Med900XXXXX”S!7.8High’900XX”SJ8.2High’900XRA6.5Med305XXRB6.5Med450XXXXXXRC6.5Med455XXRD6.5Med4510XRE6.5Med605XRF7Med300XXXRG7Med450XXXXXX revised-draft-senate-bill-24-post-education-committeeREVISED ANALYSIS OF ID ROCK SIMULATIONS FOR THE NGA-E PROJECTReport to the PEER-Lifelines Program. Project lC02dNancy Collins, Robert Graves, and PaulGọi ngay
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