NEHRP Clearinghouse

Title
Optimum Seismic Protection for New Building Construction in Eastern Metropolitan Areas. Elastic Response of Multidegree Systems Under Earthquake Loading.
File
PB80104631.pdf
Author(s)
Isbell, J.; Hong, S. T.; Whitman, R. V.
Source
National Science Foundation, Washington, DC. Engineering and Applied Science., June 20, 1973, 42 p.
Identifying Number(s)
INTERNAL STUDY-34
Abstract
Comparisons are made between the elastic responses of buildings during earthquakes computed according to response spectrum analysis, random vibration analysis, and time history analysis. An 11-story RC moment resisting frame building, designed to resist a Zone 4 earthquake, is used as the hypothetical test model representing a typical apartment building. Eight earthquake records, four artificially created and four actual records from the 1971 San Fernando earthquake, are used in the study. The three methods of analysis are described and summarized in tabular form and conclusions are presented. Tables include: characteristics of the four artificial earthquakes; coefficients of variation of their response spectra; location and characteristics of real earthquakes; time history-response spectrum ratio; and time history-random vibration response ratios. Corresponding response spectra to both kinds of earthquakes are shown in graphic form.
Keywords
Dynamic response; Time series analysis; Buildings; Earthquake engineering; Earthquake resistant structures; Seismic design; Earthquakes; Frequency response; Random vibrations; San Fernando Earthquake; Elastic analysis; Graphic methods; Tall buildings