The damage investigation of inelastic SDOF structure under the mainshock-aftershock sequence-type ground motions

Chang Hai Zhai; Wei Ping Wen; Shuang Li; Zhi Qiang Chen; Zhiwang Chang; Li Li Xie

doi:10.1016/j.soildyn.2014.01.003

The damage investigation of inelastic SDOF structure under the mainshock-aftershock sequence-type ground motions

Chang Hai Zhai^*
, Wei Ping Wen
, Shuang Li
, Zhi Qiang Chen
, Zhiwang Chang
, Li Li Xie

^*Corresponding author for this work

School of Civil Engineering

School of Civil Engineering, Harbin Institute of Technology
University of Missouri at Kansas City
China Earthquake Administration

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

108 Scopus citations

Abstract

Structures located in seismically active regions may be subjected to mainshock-aftershock sequence-type ground motions, which are characterized by the presence of strong aftershock ground motions after the mainshock and separated by short intervals of time. This manuscript investigates the damage of inelastic SDOF structure with four hysteretic models and three response demand parameters. The relative intensity of the aftershock ground motion to the mainshock ground motion is defined, denoted by PGA_as/PGA_ms. The aftershock ground motions are scaled to have different levels of PGA_as/PGA_ms. The results indicate that the effect of aftershock on ductility demand is slight for PGA_as/PGA_ms≤0.5 and can be ignored in engineering practice. The aftershock ground motion has more significant influence on the normalized hysteretic energy and damage index than on ductility demand. The effect of aftershock ground motion with larger PGA_as/PGA_ms on the response demand is generally more obvious for non-degrading system than for degrading system.

Original language	English
Pages (from-to)	30-41
Number of pages	12
Journal	Soil Dynamics and Earthquake Engineering
Volume	59
DOIs	https://doi.org/10.1016/j.soildyn.2014.01.003
State	Published - Apr 2014

Keywords

Damage index
Ductility demand
Inelastic SDOF structure
Mainshock-aftershock sequence-type ground motions
Normalized hysteretic energy

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10.1016/j.soildyn.2014.01.003

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title = "The damage investigation of inelastic SDOF structure under the mainshock-aftershock sequence-type ground motions",

abstract = "Structures located in seismically active regions may be subjected to mainshock-aftershock sequence-type ground motions, which are characterized by the presence of strong aftershock ground motions after the mainshock and separated by short intervals of time. This manuscript investigates the damage of inelastic SDOF structure with four hysteretic models and three response demand parameters. The relative intensity of the aftershock ground motion to the mainshock ground motion is defined, denoted by PGAas/PGAms. The aftershock ground motions are scaled to have different levels of PGAas/PGAms. The results indicate that the effect of aftershock on ductility demand is slight for PGAas/PGAms≤0.5 and can be ignored in engineering practice. The aftershock ground motion has more significant influence on the normalized hysteretic energy and damage index than on ductility demand. The effect of aftershock ground motion with larger PGAas/PGAms on the response demand is generally more obvious for non-degrading system than for degrading system.",

keywords = "Damage index, Ductility demand, Inelastic SDOF structure, Mainshock-aftershock sequence-type ground motions, Normalized hysteretic energy",

author = "Zhai, \{Chang Hai\} and Wen, \{Wei Ping\} and Shuang Li and Chen, \{Zhi Qiang\} and Zhiwang Chang and Xie, \{Li Li\}",

year = "2014",

month = apr,

doi = "10.1016/j.soildyn.2014.01.003",

language = "英语",

volume = "59",

pages = "30--41",

journal = "Soil Dynamics and Earthquake Engineering",

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T1 - The damage investigation of inelastic SDOF structure under the mainshock-aftershock sequence-type ground motions

AU - Zhai, Chang Hai

AU - Wen, Wei Ping

AU - Li, Shuang

AU - Chen, Zhi Qiang

AU - Chang, Zhiwang

AU - Xie, Li Li

PY - 2014/4

Y1 - 2014/4

N2 - Structures located in seismically active regions may be subjected to mainshock-aftershock sequence-type ground motions, which are characterized by the presence of strong aftershock ground motions after the mainshock and separated by short intervals of time. This manuscript investigates the damage of inelastic SDOF structure with four hysteretic models and three response demand parameters. The relative intensity of the aftershock ground motion to the mainshock ground motion is defined, denoted by PGAas/PGAms. The aftershock ground motions are scaled to have different levels of PGAas/PGAms. The results indicate that the effect of aftershock on ductility demand is slight for PGAas/PGAms≤0.5 and can be ignored in engineering practice. The aftershock ground motion has more significant influence on the normalized hysteretic energy and damage index than on ductility demand. The effect of aftershock ground motion with larger PGAas/PGAms on the response demand is generally more obvious for non-degrading system than for degrading system.

AB - Structures located in seismically active regions may be subjected to mainshock-aftershock sequence-type ground motions, which are characterized by the presence of strong aftershock ground motions after the mainshock and separated by short intervals of time. This manuscript investigates the damage of inelastic SDOF structure with four hysteretic models and three response demand parameters. The relative intensity of the aftershock ground motion to the mainshock ground motion is defined, denoted by PGAas/PGAms. The aftershock ground motions are scaled to have different levels of PGAas/PGAms. The results indicate that the effect of aftershock on ductility demand is slight for PGAas/PGAms≤0.5 and can be ignored in engineering practice. The aftershock ground motion has more significant influence on the normalized hysteretic energy and damage index than on ductility demand. The effect of aftershock ground motion with larger PGAas/PGAms on the response demand is generally more obvious for non-degrading system than for degrading system.

KW - Damage index

KW - Ductility demand

KW - Inelastic SDOF structure

KW - Mainshock-aftershock sequence-type ground motions

KW - Normalized hysteretic energy

UR - https://www.scopus.com/pages/publications/84893499979

U2 - 10.1016/j.soildyn.2014.01.003

DO - 10.1016/j.soildyn.2014.01.003

M3 - 文章

AN - SCOPUS:84893499979

SN - 0267-7261

VL - 59

SP - 30

EP - 41

JO - Soil Dynamics and Earthquake Engineering

JF - Soil Dynamics and Earthquake Engineering

ER -

The damage investigation of inelastic SDOF structure under the mainshock-aftershock sequence-type ground motions

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Keywords

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