A Vertical-to-horizontal spectral ratio model for India

被引：2

作者：

Podili, Bhargavi ^{[1
]}

Sreejaya, K. P. ^{[1
]}

Raghukanth, S. T. G. ^{[1
]}

Srinagesh, D. ^{[2
]}

Murty, C. V. R. ^{[1
]}

机构：

[1] Indian Inst Technol Madras, Dept Civil Engn, Chennai, Tamil Nadu, India

[2] CSIR, Natl Geophys Res Inst, Uppal Rd, Hyderabad 500007, Telangana, India

来源：

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2022年 / 152卷

关键词：

V; H spectral ratio; Vertical spectra; Ground motion prediction equations; Western himalayas; North-east India; MOTION PREDICTION EQUATIONS; GROUND-MOTION; ATTENUATION; HIMALAYA; EUROPE; SITES;

D O I：

10.1016/j.soildyn.2021.107060

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

This paper presents the results of a study on the characteristics of vertical-to-horizontal ratio (V/H) of 5% damped acceleration spectra for Indian ground motion records. Preliminary analysis indicates that at least 50% of the records exceed the Indian seismic design code considered norm of 2/3 at both the short and long period ranges. In addition, currently there are no V/H spectral ratio models available for India and the global models do not capture the trend across all the periods efficiently. Therefore, new ground motion models for the V/H spectral ratio are derived for two of the active tectonic regions of India: the Western Himalayas and the North-East India. Moment magnitude, focal depth, distance, site soil class, and focal mechanism are considered while deriving these models for a wide range of spectral periods (0.01-10s). The goodness of these models is verified through comparison with other globally available V/H models.

引用

页数：19

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