COMPARISON OF RECORD SCALING METHODS PROPOSED BY STANDARDS CURRENTLY APPLIED IN DIFFERENT COUNTRIES
The New Zealand Standard, European Standard and the U.S. Standard follow different methodologies for scaling ground motion records according to site conditions when time-history is performed. The New Zealand Standard proposes that the spectrum of each scaled record should match the design spectrum over a range of periods related to the natural period of the structure investigated, and the energy of at least one of these record?ˉs spectra must exceed the energy of the design spectrum. The European Standard recommends that the average spectrum of the scaled records should be always larger than 90% of the design spectrum in a defined range of periods, and the value of the average spectrum at period equal zero should be larger than the value of the corresponding design spectrum.The U.S. Standard advises that in a defined range of periods the average spectrum of the scaled records should be 30% larger than the code spectrum.This study analyses how these differences between scaling approaches affect the results of time-history analyses, and some recommendations for adequate application of record scaling procedures are presented.
Seismic standards ASCE/SEI 41-06 Eurocode 8 NZS 1170.5 record scaling time-history analysis
C. Oyarzo-Vera N. Chouw
Department of Civil and Environmental Engineering, the University of Auckland,Private Bag 92019, Auc Department of Civil and Environmental Engineering, the University of Auckland,Private Bag 92019, Auc
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）