Damage spectra for the mainshock-aftershock sequence-type ground motions

被引：95

作者：

Zhai, Chang-Hai ^{[1
]}

Wen, Wei-Ping ^{[1
]}

Chen, ZhiQiang ^{[2
]}

Li, Shuang ^{[1
]}

Xie, Li-Li ^{[1
,3
]}

机构：

[1] Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Peoples R China

[2] Univ Missouri, Dept Civil & Mech Engn, Kansas City, MO 64110 USA

[3] China Earthquake Adm, Inst Engn Mech, Harbin 150080, Peoples R China

来源：

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2013年 / 45卷

基金：

中国国家自然科学基金;

关键词：

Damage spectra; Mainshock-aftershock sequence-type ground motions; Seismic sequence; Damage index; STEEL FRAME BUILDINGS; SEISMIC DAMAGE; PERFORMANCE EVALUATION; MULTIPLE; BEHAVIOR; DESIGN;

D O I：

10.1016/j.soildyn.2012.10.001

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Strong aftershocks have the potential to increase the damage state of the structures due to the damage accumulation. This paper investigates the damage spectra for the mainshock-aftershock sequence-type ground motions with Park-Ang damage index. A method of simulating the mainshock-aftershock sequence-type ground motions is proposed based on the modified form of Bath's law and NGA ground motion prediction equation. The damage spectra are computed using the recorded and simulated sequence-type ground motions, and the effects of period of vibration, strength reduction factor, site condition, seismic sequence, damping ratio and post-yield stiffness on damage spectra are studied statistically. The results indicate that the effect of aftershock on structural damage is significant and recorded sequence-type ground motions may underestimate the damage of long-period structures due to the incompleteness of dataset. A simplified equation is proposed to facilitate the application of damage spectra in the seismic practice for mainshock-aftershock sequence-type ground motions. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1 / 12

页数：12

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