Inelastic Spectra to Predict Constant-Damage Energy Factor of Structures Under Near-Fault Pulse-Type Ground Motions

Bali Liu; Jinjun Hu; Lili Xie; Changhai Zhai

doi:10.1080/13632469.2024.2383784

Inelastic Spectra to Predict Constant-Damage Energy Factor of Structures Under Near-Fault Pulse-Type Ground Motions

Bali Liu
, Jinjun Hu^*
, Lili Xie
, Changhai Zhai

^*Corresponding author for this work

School of Civil Engineering

Hunan University of Science and Technology
China Earthquake Administration

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

A simple relationship is proposed to construct constant-damage energy factor (γ_DI) spectra of single-degree-of-freedom (SDOF) oscillators with different levels of damage, expressed by the Park-Ang damage index. γ_DI is computed for SDOF oscillators with four hysteretic models when subjected to 80 pulse-like ground motions. The statistical dependence of γ_DI on initial period, damage index, postyield stiffness ratio, and ultimate ductility factor is investigated. In comparison with the non-pulse-type ground motions, the near-fault pulse-type ground motions can significantly increase the γ_DI of structures, and the magnitude of the increase can reach about 200%. Conservative estimates of mean γ_DI of SDOF oscillators are proposed taking into account the combined effect of period, damage level, and ultimate ductility factor.

Original language	English
Pages (from-to)	4241-4261
Number of pages	21
Journal	Journal of Earthquake Engineering
Volume	28
Issue number	15
DOIs	https://doi.org/10.1080/13632469.2024.2383784
State	Published - 2024

Keywords

Near-fault pulse-type ground motion
damage index
energy factor
performance-based design
self-centering system

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10.1080/13632469.2024.2383784

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@article{e8a3ca8fe6034b7b9e4073ee4047a52c,

title = "Inelastic Spectra to Predict Constant-Damage Energy Factor of Structures Under Near-Fault Pulse-Type Ground Motions",

abstract = "A simple relationship is proposed to construct constant-damage energy factor (γDI) spectra of single-degree-of-freedom (SDOF) oscillators with different levels of damage, expressed by the Park-Ang damage index. γDI is computed for SDOF oscillators with four hysteretic models when subjected to 80 pulse-like ground motions. The statistical dependence of γDI on initial period, damage index, postyield stiffness ratio, and ultimate ductility factor is investigated. In comparison with the non-pulse-type ground motions, the near-fault pulse-type ground motions can significantly increase the γDI of structures, and the magnitude of the increase can reach about 200\%. Conservative estimates of mean γDI of SDOF oscillators are proposed taking into account the combined effect of period, damage level, and ultimate ductility factor.",

keywords = "Near-fault pulse-type ground motion, damage index, energy factor, performance-based design, self-centering system",

author = "Bali Liu and Jinjun Hu and Lili Xie and Changhai Zhai",

note = "Publisher Copyright: {\textcopyright} 2024 Taylor \& Francis Group, LLC.",

year = "2024",

doi = "10.1080/13632469.2024.2383784",

language = "英语",

volume = "28",

pages = "4241--4261",

journal = "Journal of Earthquake Engineering",

issn = "1363-2469",

publisher = "Taylor and Francis Ltd.",

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}

TY - JOUR

T1 - Inelastic Spectra to Predict Constant-Damage Energy Factor of Structures Under Near-Fault Pulse-Type Ground Motions

AU - Liu, Bali

AU - Hu, Jinjun

AU - Xie, Lili

AU - Zhai, Changhai

PY - 2024

Y1 - 2024

N2 - A simple relationship is proposed to construct constant-damage energy factor (γDI) spectra of single-degree-of-freedom (SDOF) oscillators with different levels of damage, expressed by the Park-Ang damage index. γDI is computed for SDOF oscillators with four hysteretic models when subjected to 80 pulse-like ground motions. The statistical dependence of γDI on initial period, damage index, postyield stiffness ratio, and ultimate ductility factor is investigated. In comparison with the non-pulse-type ground motions, the near-fault pulse-type ground motions can significantly increase the γDI of structures, and the magnitude of the increase can reach about 200%. Conservative estimates of mean γDI of SDOF oscillators are proposed taking into account the combined effect of period, damage level, and ultimate ductility factor.

AB - A simple relationship is proposed to construct constant-damage energy factor (γDI) spectra of single-degree-of-freedom (SDOF) oscillators with different levels of damage, expressed by the Park-Ang damage index. γDI is computed for SDOF oscillators with four hysteretic models when subjected to 80 pulse-like ground motions. The statistical dependence of γDI on initial period, damage index, postyield stiffness ratio, and ultimate ductility factor is investigated. In comparison with the non-pulse-type ground motions, the near-fault pulse-type ground motions can significantly increase the γDI of structures, and the magnitude of the increase can reach about 200%. Conservative estimates of mean γDI of SDOF oscillators are proposed taking into account the combined effect of period, damage level, and ultimate ductility factor.

KW - Near-fault pulse-type ground motion

KW - damage index

KW - energy factor

KW - performance-based design

KW - self-centering system

UR - https://www.scopus.com/pages/publications/85199787072

U2 - 10.1080/13632469.2024.2383784

DO - 10.1080/13632469.2024.2383784

M3 - 文章

AN - SCOPUS:85199787072

SN - 1363-2469

VL - 28

SP - 4241

EP - 4261

JO - Journal of Earthquake Engineering

JF - Journal of Earthquake Engineering

IS - 15

ER -

Inelastic Spectra to Predict Constant-Damage Energy Factor of Structures Under Near-Fault Pulse-Type Ground Motions

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Keywords

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