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damping modification factor

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Journal Article

Effects of source, path, and site conditions on damping modification factor for the horizontal response spectrum using offshore ground motions in the Japan Trench area Available to Purchase

Mingji Liu, Jinjun Hu, Jingyang Tan
Published: 01 February 2025
Earthquake Spectra (2025) 41 (1): 782–823.
DOI: https://doi.org/10.1177/87552930241280033
... in marine structures, it was necessary to scale spectral ordinates using damping modification factor (DMF). This statistical study was conducted based on 6676 records of offshore ground motion, obtained from S-net located in the Japan Trench. Conducting an examination into source parameters (magnitude...
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View PDF for article title, Effects of source, path, and site conditions on <span class="search-highlight">damping</span> <span class="search-highlight">modification</span> <span class="search-highlight">factor</span> for the horizontal response spectrum using offshore ground motions in the Japan Trench area
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Add to Citation Manager for Effects of source, path, and site conditions on <span class="search-highlight">damping</span> <span class="search-highlight">modification</span> <span class="search-highlight">factor</span> for the horizontal response spectrum using offshore ground motions in the Japan Trench area
Journal Article

A Damping Modification Factor Prediction Model for Horizontal Pseudoacceleration Spectrum for Subduction Slab Earthquakes Using Offshore Ground Motions in the Japan Trench Area Available to Purchase

Mingji Liu, Jinjun Hu, Jingyang Tan, Hao Shi
Published: 08 October 2024
Bulletin of the Seismological Society of America (2024) 114 (6): 3103–3126.
DOI: https://doi.org/10.1785/0120230290
...Mingji Liu; Jinjun Hu; Jingyang Tan; Hao Shi ABSTRACT This study develops a damping modification factor (DMF) model for offshore ground motion from subduction slab earthquakes that is a function of the damping ratio, spectral period, moment magnitude, focal depth, and rupture distance. The DMF...
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View PDF for article title, A <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factor</span> Prediction Model for Horizontal Pseudoacceleration Spectrum for Subduction Slab Earthquakes Using Offshore Ground Motions in the Japan Trench Area
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Add to Citation Manager for A <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factor</span> Prediction Model for Horizontal Pseudoacceleration Spectrum for Subduction Slab Earthquakes Using Offshore Ground Motions in the Japan Trench Area
Includes: Supplemental Content
Journal Article

A Damping Modification Factor Prediction Model for Horizontal Displacement Spectrum from Shallow Crustal and Upper‐Mantle Earthquakes in Japan Accounting for Site Conditions Available to Purchase

Lili Kang, Yanxu Jiang, Hao Wu, John X. Zhao
Published: 18 October 2023
Bulletin of the Seismological Society of America (2024) 114 (2): 1033–1047.
DOI: https://doi.org/10.1785/0120230092
...Lili Kang; Yanxu Jiang; Hao Wu; John X. Zhao ABSTRACT This article presents damping modification factors (DMFs) for the horizontal component of the strong‐motion records generated by the shallow crustal and upper‐mantle earthquakes in Japan. This model can be used to scale a 5% damped design...
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View PDF for article title, A <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factor</span> Prediction Model for Horizontal Displacement Spectrum from Shallow Crustal and Upper‐Mantle Earthquakes in Japan Accounting for Site Conditions
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Add to Citation Manager for A <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factor</span> Prediction Model for Horizontal Displacement Spectrum from Shallow Crustal and Upper‐Mantle Earthquakes in Japan Accounting for Site Conditions
Includes: Supplemental Content
Journal Article

A Damping Modification Factor for Horizontal Acceleration Spectrum from Subduction Slab Earthquakes in Japan Accounting for Site Conditions Available to Purchase

John X. Zhao, Mingxiu Jiang, Xiaonan Zhang, Lili Kang
Published: 26 May 2020
Bulletin of the Seismological Society of America (2020) 110 (4): 1942–1959.
DOI: https://doi.org/10.1785/0120190242
...John X. Zhao; Mingxiu Jiang; Xiaonan Zhang; Lili Kang ABSTRACT We present a damping modification factor (DMF) model for the total acceleration spectrum from subduction slab earthquakes. The model can be used for scaling a 5% damped design spectrum not associated with a particular earthquake...
FIGURES
First thumbnail for: A <span class="search-highlight">Damping</span> <s...
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View PDF for article title, A <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factor</span> for Horizontal Acceleration Spectrum from Subduction Slab Earthquakes in Japan Accounting for Site Conditions
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Add to Citation Manager for A <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factor</span> for Horizontal Acceleration Spectrum from Subduction Slab Earthquakes in Japan Accounting for Site Conditions
Includes: Supplemental Content
Journal Article

A Damping Modification Factor Prediction Model for Horizontal Displacement Spectrum from Subduction Interface Earthquakes in Japan Accounting for Site Conditions Available to Purchase

Jun Zhou, John X. Zhao
Published: 07 April 2020
Bulletin of the Seismological Society of America (2020) 110 (3): 1231–1246.
DOI: https://doi.org/10.1785/0120190275
...Jun Zhou; John X. Zhao ABSTRACT This article presents a damping modification factor (DMF) model without source and path parameters for subduction interface earthquakes in Japan using a similar dataset as the one used in the Zhao, Liang, et al. (2016) study. Site effect was modeled by site classes...
FIGURES
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View PDF for article title, A <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factor</span> Prediction Model for Horizontal Displacement Spectrum from Subduction Interface Earthquakes in Japan Accounting for Site Conditions
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Add to Citation Manager for A <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factor</span> Prediction Model for Horizontal Displacement Spectrum from Subduction Interface Earthquakes in Japan Accounting for Site Conditions
Includes: Supplemental Content
Journal Article

A Damping Modification Factor Prediction Model for Horizontal Displacement Spectrum from Subduction Slab Earthquakes in Japan Accounting for Site Conditions Available to Purchase

Jun Zhou, John X. Zhao
Published: 21 January 2020
Bulletin of the Seismological Society of America (2020) 110 (2): 647–665.
DOI: https://doi.org/10.1785/0120190156
...Jun Zhou; John X. Zhao ABSTRACT A damping modification factor (DMF) model without source and path parameters is presented in this article for subduction slab earthquakes in Japan, using a similar dataset in the Zhao, Jiang, et al. (2016) study. Site classes based on site periods were used...
FIGURES
First thumbnail for: A <span class="search-highlight">Damping</span> <s...
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Third thumbnail for: A <span class="search-highlight">Damping</span> <s...
View PDF for article title, A <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factor</span> Prediction Model for Horizontal Displacement Spectrum from Subduction Slab Earthquakes in Japan Accounting for Site Conditions
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Add to Citation Manager for A <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factor</span> Prediction Model for Horizontal Displacement Spectrum from Subduction Slab Earthquakes in Japan Accounting for Site Conditions
Journal Article

Effects of Earthquake Source, Path, and Site Conditions on Damping Modification Factor for the Response Spectrum of the Horizontal Component from Subduction Earthquakes Available to Purchase

John X. Zhao, Qingsong Yang, Kaiwei Su, Jiguan Liang, Jun Zhou, Heng Zhang, Xinge Yang
Published: 12 November 2019
Bulletin of the Seismological Society of America (2019) 109 (6): 2594–2613.
DOI: https://doi.org/10.1785/0120190105
...John X. Zhao; Qingsong Yang; Kaiwei Su; Jiguan Liang; Jun Zhou; Heng Zhang; Xinge Yang Abstract Damping modification factors (DMFs) are important for estimating the response spectrum for the design of structures with different damping ratios. This study investigated the effects of earthquake source...
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View PDF for article title, Effects of Earthquake Source, Path, and Site Conditions on <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factor</span> for the Response Spectrum of the Horizontal Component from Subduction Earthquakes
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Add to Citation Manager for Effects of Earthquake Source, Path, and Site Conditions on <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factor</span> for the Response Spectrum of the Horizontal Component from Subduction Earthquakes
Includes: Supplemental Content
Journal Article

The effect of spectral shape on damping modification factors Available to Purchase

Sebastián Miranda, M.EERI, Eduardo Miranda, M.EERI, Juan Carlos de la Llera, M.EERI
Published: 01 November 2020
Earthquake Spectra (2020) 36 (4): 2086–2111.
DOI: https://doi.org/10.1177/8755293020936691
...Sebastián Miranda, M.EERI; Eduardo Miranda, M.EERI; Juan Carlos de la Llera, M.EERI The main objective of this study is to investigate the effect of spectral shape on damping modification factors η used in equivalent static and response spectrum analyses of structures with damping ratios...
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View PDF for article title, The effect of spectral shape on <span class="search-highlight">damping</span> <span class="search-highlight">modification</span> <span class="search-highlight">factors</span>
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Journal Article

Period Dependence of Response Spectrum Damping Modification Factors due to Source- and Site-Specific Effects Available to Purchase

Brendon A. Bradley
Published: 01 May 2015
Earthquake Spectra (2015) 31 (2): 745–759.
DOI: https://doi.org/10.1193/070213EQS189M
...Brendon A. Bradley Response spectrum damping modification factors are key components of displacement-based seismic design methods. This paper examines the period dependence of damping modification factors as a result of near-source forward directivity, basin-induced surface waves, and surficial...
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View PDF for article title, Period Dependence of Response Spectrum <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factors</span> due to Source- and Site-Specific Effects
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Add to Citation Manager for Period Dependence of Response Spectrum <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factors</span> due to Source- and Site-Specific Effects
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A comparison of damping modification factor (DMF) mean values at a damping ratio of 1% for acceleration and displacement spectra for (a) site class (SC) I and II sites and (b) SC III and IV sites. The color version of this figure is available only in the electronic edition.

A comparison of damping modification factor (DMF) mean values at a damping ... Available to Purchase

Published: 26 May 2020
Figure 2. A comparison of damping modification factor (DMF) mean values at a damping ratio of 1% for acceleration and displacement spectra for (a) site class (SC) I and II sites and (b) SC III and IV sites. The color version of this figure is available only in the electronic edition.
Image
Comparisons of damping modification factor (DMF) values. The left panel compares the acceleration spectrum, and the right panel compares the displacement spectrum. (a,b) Records at site class (SC) I and IV sites from shallow crustal and upper (SCU) mantle events with a damping ratio of 1% and 30%, respectively. (c,d) Comparisons of the DMF values from three types of events at SC IV sites for a damping ratio of 1%. (e,f) A damping ratio of 30% in the bottom row. The color version of this figure is available only in the electronic edition.

Comparisons of damping modification factor (DMF) values. The left panel com... Available to Purchase

Published: 12 November 2019
Figure 1. Comparisons of damping modification factor (DMF) values. The left panel compares the acceleration spectrum, and the right panel compares the displacement spectrum. (a,b) Records at site class (SC) I and IV sites from shallow crustal and upper (SCU) mantle events with a damping ratio
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Error percentages associated with different damping modification factor prediction equations available in the literature and the proposed equation at (a) 10%, (b) 20%, and (c) 30% damping for crustal events corresponding to soil class D.

Error percentages associated with different damping modification factor pre... Available to Purchase

Published: 01 February 2016
Figure 12. Error percentages associated with different damping modification factor prediction equations available in the literature and the proposed equation at (a) 10%, (b) 20%, and (c) 30% damping for crustal events corresponding to soil class D.
Image
Error percentages associated with different damping modification factor prediction equations available in the literature and the proposed equation at (a) 10%, (b) 20%, and (c) 30% damping for interface events corresponding to soil class C.

Error percentages associated with different damping modification factor pre... Available to Purchase

Published: 01 February 2016
Figure 15. Error percentages associated with different damping modification factor prediction equations available in the literature and the proposed equation at (a) 10%, (b) 20%, and (c) 30% damping for interface events corresponding to soil class C.
Image
Error percentages associated with different damping modification factor prediction equations available in the literature and the proposed equation at (a) 10%, (b) 20%, and (c) 30% damping for interface events corresponding to soil class D.

Error percentages associated with different damping modification factor pre... Available to Purchase

Published: 01 February 2016
Figure 16. Error percentages associated with different damping modification factor prediction equations available in the literature and the proposed equation at (a) 10%, (b) 20%, and (c) 30% damping for interface events corresponding to soil class D.
Image
Error percentages associated with different damping modification factor prediction equations available in the literature and the proposed equation at (a) 10%, (b) 20%, and (c) 30% damping for crustal events corresponding to soil class C.

Error percentages associated with different damping modification factor pre... Available to Purchase

Published: 01 February 2016
Figure 11. Error percentages associated with different damping modification factor prediction equations available in the literature and the proposed equation at (a) 10%, (b) 20%, and (c) 30% damping for crustal events corresponding to soil class C.
Image
Error percentages associated with different damping modification factor prediction equations available in the literature and the proposed equation at (a) 10%, (b) 20%, and (c) 30% damping for inslab events corresponding to soil class C.

Error percentages associated with different damping modification factor pre... Available to Purchase

Published: 01 February 2016
Figure 13. Error percentages associated with different damping modification factor prediction equations available in the literature and the proposed equation at (a) 10%, (b) 20%, and (c) 30% damping for inslab events corresponding to soil class C.
Image
Error percentages associated with different damping modification factor prediction equations available in the literature and the proposed equation at (a) 10%, (b) 20%, and (c) 30% damping for inslab events corresponding to soil class D.

Error percentages associated with different damping modification factor pre... Available to Purchase

Published: 01 February 2016
Figure 14. Error percentages associated with different damping modification factor prediction equations available in the literature and the proposed equation at (a) 10%, (b) 20%, and (c) 30% damping for inslab events corresponding to soil class D.
Journal Article

Damping Modification Factors for Horizontal and Vertical Acceleration Spectra from Offshore Ground Motions in the Japan Sagami Bay Region Available to Purchase

Jinjun Hu, Mingji Liu, Jingyang Tan
Published: 05 August 2022
Bulletin of the Seismological Society of America (2022) 112 (5): 2621–2641.
DOI: https://doi.org/10.1785/0120210327
...Jinjun Hu; Mingji Liu; Jingyang Tan ABSTRACT Damping modification factors (DMFs) are used to scale the 5%‐damped response spectra for the seismic design of structures with different damping ratios. However, there is no DMF model for offshore engineering response spectra at present. Using 892...
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View PDF for article title, <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factors</span> for Horizontal and Vertical Acceleration Spectra from Offshore Ground Motions in the Japan Sagami Bay Region
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Add to Citation Manager for <span class="search-highlight">Damping</span> <span class="search-highlight">Modification</span> <span class="search-highlight">Factors</span> for Horizontal and Vertical Acceleration Spectra from Offshore Ground Motions in the Japan Sagami Bay Region
Includes: Supplemental Content
Image
Comparison of mean damping modification factors (DMFs) (a) with a damping ratio of 1% and (b) with a damping ratio of 30% for four site classes (SCs). The color version of this figure is available only in the electronic edition.

Comparison of mean damping modification factors (DMFs) (a) with a damping r... Available to Purchase

Published: 07 April 2020
Figure 1. Comparison of mean damping modification factors (DMFs) (a) with a damping ratio of 1% and (b) with a damping ratio of 30% for four site classes (SCs). The color version of this figure is available only in the electronic edition.
Image
A comparison of average damping modification factors (DMFs) between offshore and onshore (a) with 1% damping ratio and 3% damping ratio and (b) with 6% damping ratio and 30% damping ratio.

A comparison of average damping modification factors (DMFs) between offshor... Available to Purchase

Published: 05 August 2022
Figure 3. A comparison of average damping modification factors (DMFs) between offshore and onshore (a) with 1% damping ratio and 3% damping ratio and (b) with 6% damping ratio and 30% damping ratio.