SCEC Award Number 17233 View PDF
Proposal Category Workshop Proposal
Proposal Title Organizational Meetings for the SCEC Utilization of Ground-Motion Simulations (UGMS) Committee
Name Organization
Thomas Jordan University of Southern California C.B. Crouse AECOM Christine Goulet University of Southern California
Other Participants UGMS Committee Members: Christine Goulet (SCEC), Norm Abrahamson (PG&E/UCB)John Anderson (UNR), Bob Bachman (R.E. Bachman Consulting Structural Engineers), Jack Baker (Stanford), Jacobo Bielak (CMU), C.B. Crouse (URS) – Chair of Committee, Art Frankel (USGS), Rob Graves (USGS), Ron Hamburger (SGH), Curt Haselton (CSUC), John Hooper (MKA),
Marty Hudson (AMEC), Charlie Kircher (Kircher & Associates), Marshall Lew (AMEC),
Nico Luco (USGS), Farzad Naeim (Farzad Naeim, Inc.), and
Paul Somerville (URS)
SCEC Priorities 4b, 4c, 4d SCEC Groups CME, GM, EEII
Report Due Date 12/09/2017 Date Report Submitted 05/14/2018
Project Abstract
The UGMS committee implemented the approach to combine the results from the NGA West2 GMPE’s with those from CyberShake in order to determine MCER response spectra for southern California, per the procedures in the ASCE 7-16 standard. A Beta version of a web look-up tool to obtain the MCER was developed and circulated for review among UGMS committee members and the City of Los Angeles, SEAOSC, and OSHPD representatives. Based on their review comments, revisions to the tool were started at the end of 2017 and carried over into the 2018.
Intellectual Merit The novel concept employed in the research was to directly use the results of 3-D numerical simulations in the development of MCER ground motion for use in building design. Simulations have not been directly used in this manner before.
Broader Impacts The MCER response spectra obtained for southern California under this project is considered to better account for the 3-D basin structure, and the coupling of seismic waves emanating from the regions active faults and propagating within and interacting with a 3-D velocity structure of the region.
Exemplary Figure Figure 2. Regional MCER spectral acceleration map for 5-sec period. The 336
CyberShake sites are solid inverted white triangles. Acceleration scale in g.

This figurer comes from the Crouse et al (2018) paper attached to annual report.