An Evaluation of Scaling Methods for Earthquake Response Spectra

Nau, J.M.; Hall, W.J.

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https://hdl.handle.net/2142/14107 Copy

Description

Title

An Evaluation of Scaling Methods for Earthquake Response Spectra

Author(s)

• Nau, J.M.
• Hall, W.J.

Issue Date

1982-05

Keyword(s)

• Ductility
• Earthquake engineering
• Dynamic response

Abstract

In this study, scaling methods are evaluated with the purpose of reducing the dispersion encountered in normalized spectral ordinates. The scaling factors considered comprise two major groups, one based on ground motion data and the other, directly on response quantities. Within the group based on ground motion values are the integrals of the squared acceleration, velocity, and displacement, and those quantities derived therefrom, namely the root-square, mean-square, and root-mean-square motions. Included within the group based on response quantities are the spectrum intensity and the mean Fourier amplitude. The scaling parameters were evaluated using a set of twelve representative earthquake recordings. Response spectra for elastic, elastoplastic, and bilinear hysteretic systems for wide ranges of damping and ductility were used in the statistical study. The results show that a three-parameter system of spectrum intensities, computed within low, medium, and high frequency regions, may afford a better means of scaling earthquake response spectra.

Publisher

University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign.

Series/Report Name or Number

Civil Engineering Studies SRS-499

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/14107

Sponsor(s)/Grant Number(s)

National Science Foundation Grants ENV 77-07190 and PFR 80-02582

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