A three-dimensional analytical study of spatial variability of seismic ground motions

"A hybrid deterministic and stochastic method is developed to estimate the spatial variation of seismic ground motions which is necessary for the analysis and design of lifeline systems. An analytical model for wave propagating through a three-dimensional half-space is first proposed to evaluate the ground responses. The incoherent slip over a fault plane is then represented by an autocorrelation function of the dislocation velocity, from which the source motion is modeled as a random process specified by a power spectral density function. To separate the path effect from the source effect, a multi-degree-of-freedom system is chosen as the ""substitute system"" which is characterized by the equivalent transmission effect to the deterministic wave propagation model. The frequency transfer function of the substitute system is obtained through system identification. With the resulting transfer function of the system and the given power spectral density at the source, the power spectral density of absolute and differential ground motions can be estimated."

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Civil and Environmental Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Hong, Li-ling

Contributors dc:contributor

• Ang, Alfredo H-S.

• Engineering, Civil

Statement dc:rights

• Copyright 1989 Hong, Li-ling

Language dc:language

eng

Identifier

AAI9010891
(UMI)AAI9010891

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/22369