Study on inelastic displacement ratio spectra for near-fault pulse-type ground motions

被引：33
|
作者：
Zhai Changhai [1 ]
Li Shuang [1 ]
Xie Lili [1 ,2 ]
Sun Yamin [1 ]
机构：
[1] Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Peoples R China
[2] China Earthquake Adm, Inst Engn Mech, Harbin 150080, Peoples R China
来源：
EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION | 2007年 / 6卷 / 04期
关键词：
near-fault pulse-type ground motion; inelastic displacement ratio spectrum; ground motion parameter; PGV/PGA; site condition;
D O I：
10.1007/s11803-007-0755-x
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In displacement-based seismic design, inelastic displacement ratio spectra (IDRS) are particularly useful for estimating the maximum lateral inelastic displacement demand of a nonlinear SDOF system from the maximum elastic displacement demand of its counterpart linear elastic SDOF system. In this study, the characteristics of IDRS for near-fault pulse-type ground motions are investigated based on a great number of earthquake ground motions. The influence of site conditions, ratio of peak ground velocity (PGV) to peak ground acceleration (PGA), the PGV, and the maximum incremental velocity (M1V) on IDRS are also evaluated. The results indicate that the effect of near-fault ground motions on IDRS are significant only at periods between 0.2 s - 1.5 s, where the amplification can approach 20%. The PGV/PGA ratio has the most significant influence on IDRS among the parameters considered. It is also found that site conditions only slightly affect the IDRS.
引用
收藏
页码：351 / 355
页数：5
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