Show simple item record

contributor authorLeonardo Ramon
contributor authorTimothy Huff
contributor authorDaniel R. VandenBerge
date accessioned2024-04-27T22:36:20Z
date available2024-04-27T22:36:20Z
date issued2024/05/01
identifier other10.1061-PPSCFX.SCENG-1400.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4297055
description abstractThe long-period transition period (TL) is an important parameter in both seismological theory and seismic design. Current estimates of the parameter used for design are based on seismological model data from 2006, and presumably are for nonsubduction earthquakes. ASCE 7-16, which contains standards for seismic design, provides mapped estimates for TL based on the maximum considered seismic ground shaking. To expand the data considered for TL, this study used the NGA-Sub flatfile obtained from the NGA Subduction Portal at the B. John Garrick Institute for the Risk Sciences. For each record, TL was interpreted as the period at which spectral displacement is a maximum, an interpretation which becomes evident upon close examination of the two-point design response spectra in modern codes. The rationale for this interpretation is the very definition of TL in ASCE 7-16. As performance-based design for multiple hazard levels has evolved and continues to gain acceptance by the engineering community, there is a need for a method to estimate TL for multiple levels of ground shaking at a given site. The primary purposes of this study were to develop estimates for TL for subduction zones and to facilitate the estimation of TL for lower-magnitude, more-frequent subduction events in subduction zones for performance-based seismic design, as opposed to using a single mapped value for a particular region. In this study, other methods for estimating TL also were explored. The long-period transition parameter, TL, for subduction zones was found to vary with moment magnitude as the primary influence. A model in tabular form, similar to that used to develop maps in ASCE 7, was developed for subduction zones.
publisherASCE
titleLong-Period Transition for Subduction Earthquake Spectra
typeJournal Article
journal volume29
journal issue2
journal titlePractice Periodical on Structural Design and Construction
identifier doi10.1061/PPSCFX.SCENG-1400
journal fristpage04024007-1
journal lastpage04024007-7
page7
treePractice Periodical on Structural Design and Construction:;2024:;Volume ( 029 ):;issue: 002
contenttypeFulltext


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record