SCEC UGMS Committee Meeting
Conveners: C.B. Crouse and Christine Goulet
Dates: November 7, 2018 (10:00 - 15:00)
Location: SCEC Boardroom, USC, Los Angeles
SCEC Award and Report: 18141
SUMMARY: The SCEC Committee for Utilization of Ground Motion Simulations (or "UGMS Committee") is tasked to develop long-period response spectral acceleration maps for Los Angeles region for inclusion in NEHRP and ASCE 7 Seismic Provisions and in Los Angeles City Building Code. The maps would be based on 3-D numerical ground-motion simulations, and ground motions computed using latest empirical ground-motion prediction equations from the PEER NGA project. This project is coordinated with (1) the SCEC Ground Motion Simulation Validation Group, (2) other SCEC projects, such as CyberShake and UCERF, and (3) the USGS national seismic hazard mapping project.
For this workshop, we will start with a summary of the MCER tool publicly released May 2018. We will explore the addition of new capabilities, including disaggregation, access to simulated time series. We will introduce a new beta tool under development for existing buildings (ASCE 41-17). We also present updates from the building code and NEHRP committees as well as an update from the USGS National Seismic Hazard Maps Program (NSHM). We have reserved time for discussions following each talk and the goal is to agree on action items for the Committee’s 2019 activities.
WEDNESDAY, NOVEMBER 7, 2018
| 09:45 - 10:00 | Meeting Check-In | |
| 10:00 - 10:15 | Welcome and Introductions | Christine Goulet / C.B. Crouse |
| 10:15 - 11:00 | Released Site-Specific MCER Tool and consideration by LATBSDC & City of Los Angeles (PDF, 2.6MB) | C.B. Crouse / Farzad Naeim |
| 11:00 - 11:15 | Future additions to tool (e.g., deaggregation data & broadband simulated acceleration time histories) (PDF, 3.5MB) | Christine Goulet / Kevin Milner |
| 11:15 - 11:45 | Ground Motion Simulation Validation (GMSV) project on structural response summary (PDF, 1.5MB) | Sanaz Rezaeian |
| 11:45 - 12:15 | Subsets of CyberShake time series for structural analyses (PDF, 988KB) | Jack Baker / Ganyu Teng |
| 12:15 - 13:00 | Lunch | |
| 13:00 - 13:15 | BSSC Multi-Period Response Spectra and Design Parameters (PDF, 1.7MB) | Charlie Kircher |
| 13:15 - 13:30 | Deterministic caps proposals for 2020 NEHRP Provisions (PDF, 3.3MB) | Nico Luco |
| 13:30 - 14:00 | Update on USGS Urban Seismic Hazard Working Group: Details of USGS method for using CyberShake simulations to compute S. CA MCER for its 2020 “maps” | Morgan Moschetti |
| 14:00 - 14:30 | Roll-Out of Beta version of Look-Up Tool for Site-Specific BSE response spectra per ASCE 41-17, comment period & schedule for official release | C.B. Crouse / Edric Pauk / Kevin Milner |
| 14:30 - 15:00 | Discussions and next steps forward | All |
| 15:00 - 15:15 | Action Items & Tentative Dates for Next UGMS | Christine Goulet / All |
| 15:15 | Adjourn |
ELECTRONIC SUPPLEMENTS
1. Crouse Supplement (SCEC UGMS MCER web tool)
| Supplements | |
| Web Access | https://data2.scec.org/ugms-mcerGM-tool_v18.4/ |
| Related Presentations | |
| Crouse | PDF, 2.6MB |
2. Baker/Teng Supplement (Selected CyberShake Dataset)
| Supplements | |
| Dataset (includes documentation) | ZIP, 30MB |
| Related Presentations | |
| Baker/Teng | PDF, 988KB |
PARTICIPANTS
*Remote Participants
