NEHRP Clearinghouse
- Title
- An Evaluation of Scaling Methods for Earthquake Response Spectra.
- File
- PB83145474.pdf
- Author(s)
- Nau, J. M.; Hall, W. J.
- Source
- National Science Foundation, Washington, DC., May 1982, 351 p.
- Identifying Number(s)
- ['STRUCTURAL RESEARCH SER-499', 'UILU-ENG-82-2007']
- Abstract
- Scaling methods are evaluated to reduce the dispersion encountered in normalized spectral ordinates. The scaling factors are based on ground motion data and on response quantities. Within the group based on ground motion values are the integrals of the squared acceleration, velocity and displacement, and 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 are evaluated using a set of twelve earthquake recordings. Response spectra for elastic, elastoplastic, and bilinear hysteretic systems for wide ranges of damping and ductility are used. Results reveal 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.
- Keywords
- Response spectra; Earthquake resistant structures; Mechanical hysteresis; Dynamic response; Ground motion; Earthquake engineering; Spectrum analysis; Scaling factors; Linear systems; Earthquakes