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Indexed by:期刊论文

Date of Publication:2011-09-01

Journal:EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION

Included Journals:Scopus、SCIE、EI

Volume:10

Issue:3

Page Number:393-402

ISSN No.:1671-3664

Key Words:apparent velocity; P-SV ratio; equivalent incident angle; rotational ground motion

Abstract:The apparent velocity of the incident wave is an important parameter for simulating rotational ground motion with theoretical methods, but it is difficult to estimate effectively when there is only a single record. This paper discusses a P-SV ratio method based on elastodynamic theory in a multi-layer isotropic elastic half space. The apparent velocities of four earthquakes in the SMART array are calculated with this method. The result is close to a method that uses travel time analysis. Furthermore, the factors that impact the apparent velocity and equivalent incident angle are considered according to records from the Chi-Chi earthquake. There is no obvious relationship between the equivalent incident angle and epicenter. distance. However, the equivalent, incident angle is obviously dependent on the site conditions.