The influences of aftershocks on the constant damage inelastic displacement ratio

被引：28
|
作者：
Zhai, Changhai [1 ,2 ]
Wen, Weiping [1 ,2 ]
Ji, Duofa [1 ,2 ]
Li, Shuang [1 ,2 ]
机构：
[1] Harbin Inst Technol, Key Lab Struct Dynam Behav & Control, Minist Educ, Harbin 150090, Heilongjiang, Peoples R China
[2] Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Peoples R China
来源：
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2015年 / 79卷
基金：
中国国家自然科学基金;
关键词：
Constant damage inelastic displacement ratios; Mainshock-aftershock sequence-type ground motion; Spectral acceleration; Relative intensity; Simplified expression; GROUND MOTIONS; SEISMIC SEQUENCES; FAULT EARTHQUAKES; DUCTILITY DEMAND; MULTIPLE; BEHAVIOR; FRAMES;
D O I：
10.1016/j.soildyn.2015.08.011
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
This manuscript investigates the constant damage inelastic displacement ratios for the mainshock-aftershock sequence-type ground motions. The inelastic displacement ratios are computed for three hysteretic models and two kinds of sequence-type ground motions, containing one or two aftershocks. The influences of aftershocks on the inelastic displacement ratios are quantitatively investigated with the scaled sequence-type ground motions. The results indicate that the dispersion of inelastic displacement ratio can be effectively reduced by aftershock when it is scaled with spectral acceleration to different relative intensities. Aftershock has more significant influences on the inelastic displacement ratio of Elastic-Perfectly-Plastic (EPP) system than that of degrading system. A simplified expression of constant damage inelastic displacement ratio is proposed for the sequence-type ground motions with strong aftershocks. (c) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：186 / 189
页数：4
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