Digital Appendix of "Tall Building Performance-Based Seismic Design Using SCEC Broadband Platform Site-Specific Ground Motion Simulations"

Archived in this document are additional information and data for the trial application of SCEC Broadband Platform (BBP) seismograms in code-based design check. The archived BBP seismograms are generated by the Grave-Pitarka module (Graves and Pitarka, 2014 and 2016) in the SCEC Broadband Platform (v17.3). The original BBP seismograms are processed by truncating the time history starting from the first to the last data point with an absolute value greater than 0.001g. This process merely changes the response spectrum and other key ground motion characteristics, but it helps to systematically archive a tractable length for the BBP seismogram used in nonlinear response history analysis.

The first section will briefly introduce the algorithm for selecting records to the ASCE risk-targeted MCE spectrum. Then, the following three sections will report both ground motion and structural responses data in a systematical manner for the San Francisco site, the Los Angeles site, and the San Bernardino site, respectively. Each section contains 4 subsections summarizing the results of 20-story frame and the 42-story wall under NGA and BBP record suites matched to site-specific $MCE_R$ targets, respectively. The first section (i.e., the San Francisco site) includes 4 extra subsections for cases where NGA and BBP record suites are matched to conditional mean spectrum targets.

Each subsection starts with a summary table listing the recording names, sampling rates, total recording lengths, scaling factors, and significant duration for selected 11 ground motions. The referred NGA records are selected from NGA-West database, which can be accessed through the official website (https://ngawest2.berkeley.edu/). The referred BBP records are selected from the pool of total 4192 synthetic BBP seismograms (https://www.designsafe-ci.org/data/browser/public/designsafe.storage.published/PRJ-1975). The summary table is followed by a summary figure, including (1) a comparison of scaled response spectra and their average to the target spectrum; (2) a cumulative distribution plot of significant duration ($Ds_{5-75}$) of selected records; (3) maximum story drift ratio demands and their average; and (4) maximum peak floor acceleration demands and their average. The summary figure is then followed by 11 figures, each of which shows (1) the un-scaled and scaled time-history traces of the individual record, (2) its un-scaled and scaled response spectra, (3) the maximum story drift ratio profile, and (4) the peak floor acceleration profile under that individual record.