Seismic Performance Evaluation of Novel Cold-Formed Steel Framed Shear Walls Sheathed with Corrugated Steel Sheets Page: 41
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In this research, building archetypes were subjected to a suite of far-field ground motion
records. The results of IDA are plotted by structure damage measure (DM) versus an intensity
measure (IM). Story drift is the DM and the spectral acceleration of the first natural period of the
structure is the intensity measure (IM). IDA analysis was performed on both horizontal directions.
5.9.2 Selection of Ground Motion Record Sets
Per FEMA P695, the criteria of ground motion record selection requires to consider the
elements of source magnitude, source type, site conditions, site source, number of records per
event and strongest ground motion records, etc.
The Methodology provides two sets of ground motion records for collapse assessment
using nonlinear dynamic analysis, referred to as Far-Field record set and Near-Field record set.
The Far-Field record set includes twenty-two pairs of horizontal ground motions from sites located
greater than or equal to 10 km from fault rupture. The Near-Field record set includes twenty-eight
component pairs of horizontal ground motions from sites located greater than or equal to 10 km
from fault rupture. The record sets do not include the vertical component of ground motion since
vertical earthquake shaking is not considered of primary importance for collapse evaluation, and
is not required by the FEMA P695 Methodology for nonlinear dynamic analysis.
The Methodology specifies use of the Far-Field record set for collapse evaluation of index
archetypes designed for Seismic Design Category B, C, or D. The twenty-two Far-Field record
set were selected from the Pacific Earthquake Engineering Research Center (PEER) database. The
twenty-two records are take from 14 events that occurred between 1971 and 1999. Of the 14 events,
eight were California earthquakes and six were from five different foreign countries. The Far-Field
record set was chosen for this research. Details of the 22 far-field ground motion record set is
provided in Table 5.7.41
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Lan, Xing. Seismic Performance Evaluation of Novel Cold-Formed Steel Framed Shear Walls Sheathed with Corrugated Steel Sheets, thesis, August 2017; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc1011859/m1/49/?rotate=270: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .