1 / 24

Implementation of SCEC Research in Earthquake Engineering: Ongoing Projects & NSF Proposal

This project aims to implement SCEC research findings in earthquake engineering, focusing on ground motion time histories, seismic hazard analysis, and ground-motion and structural simulations for scenario earthquakes in Los Angeles. Relevant topics include source and path effects, faulting style, stress parameters, basin simulations, and attenuation models.

ppowell
Download Presentation

Implementation of SCEC Research in Earthquake Engineering: Ongoing Projects & NSF Proposal

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. IMPLEMENTATION OF SCEC RESEARCH IN EARTHQUAKE ENGINEERING ONGOING PROJECTS SCEC PROPOSAL TO NSF SCEC 2004 RFP

  2. Source and Path Effects Distance and magnitude scaling Footwall/hanging wall Style of faulting Directivity Buried vs. surface faulting Static stress drop (ruptured area) and other (dynamic) stress parameters Other fault properties 3-D basin

  3. Simulation of Rock Motion Extrapolation beyond data Use of numerical simulations to guide the extrapolation Rock

  4. Final Product (Integration of Individual Research) Attenuation models for spectral acceleration (5% Damped), PGA, PGV, and PGD Horizontal components (fault normal, fault parallel, and average components) Shallow crustal earthquakes in CA Magnitude range: M5 - M8.5 Distance range: 0 - 200 km Period range: 0.0 (PGA) - 10 seconds

  5. Stakeholders Caltrans PG&E Bay Area Rapid Transit (BART) East Bay Municipal Utility District (EBMUD) Southern California Edison California Department of Water Resources Division of Safety of Dams (DSOD) Federal Energy Regulatory Commission (FERC) U.S. Bureau of Reclamation

  6. Improved Intensity Measures • Criteria: • Efficiency (to reduce dispersion) • Sufficiency (incorporate all relevant aspects of earthquake hazard, M-R + ???) • Scalar or Vector Intensity Measures • IM versus Improved Record Selection Ref: H. Krawinkler

  7. Ground Motions Intensity Measure Ref: H. Krawinkler

  8. Improved IM …Vector IMs ? Sa(T1) Sa(T2 …) PGV or Sv(T1) Sd,inelastic Tp (for NF) Duration Ref: H. Krawinkler

  9. Alternative Hazard IM: SaRaSa Sa(T1) Sa(T1) IDRmax Sa(T*1) SaRsaa Sa(T*1) Sa(T1) T1 Rsa = Sa(T1) / Sa (T1*)

  10. Vector Valued Seismic Hazard(SCEC – PEER Collaborative Project) • Frequency of simultaneous occurrence of more than one ground motion parameter • Current work: 2 parameters: Response spectral acceleration at the fundamental and first higher mode of a building; now extending to more than two parameters • Future work: 2 parameters: Period and peak velocity of the rupture directivity pulse

  11. Scalar and Vector Engineering Demand Parameters at Van Nuys Hotel

  12. IMPLEMENTATION OF SCEC RESEARCH IN EARTHQUAKE ENGINEERING – NSF Proposal for 2004 • Task 1. Ground Motion Time Histories for use in Performance-Based Earthquake Engineering • Task 2. PEER-Lifelines/SCEC/USGS Next Generation Attenuation (NGA) Program • Task 3. Seismic Hazard Analysis • Task 4. Ground-Motion and Structural Simulations for Scenario Earthquakes in Los Angeles

More Related