AN IMPROVED METHOD OF MATCHING RESPONSE SPECTRA OF RECORDED EARTHQUAKE GROUND MOTION USING WAVELETS

Dynamic nonlinear analysis of structures requires the seismic input to be defined in the form of acceleration time-series, and these will generally be required to be compatible with the elastic response spectra representing the design seismic actions at the site. The advantages of using real accelerograms matched to the target response spectrum using wavelets for this purpose are discussed. The program RspMatch, which performs spectral matching using wavelets, is modified using new wavelets that obviate the need to subsequently apply a baseline correction. The new version of the program, RspMatch2005, enables the accelerograms to be matched to the pseudo-acceleration or displacement spectral ordinates as well as the spectrum of absolute acceleration, and additionally allows the matching to be performed simultaneously to a given spectrum at several damping ratios.

[1]  P. C. Rizzo,et al.  Development of real/synthetic time histories to match smooth design spectra☆ , 1975 .

[2]  Walter J Silva,et al.  State-of-the-Art for Assessing Earthquake Hazards in the United States. Report 24. WES RASCAL Code for Synthesizing Earthquake Ground Motions. , 1987 .

[3]  Mervyn J. Kowalsky,et al.  Displacement-based design of RC bridge columns in seismic regions , 1995 .

[4]  Farzad Naeim,et al.  On the Use of Design Spectrum Compatible Time Histories , 1995 .

[5]  J. Bommer,et al.  COMPATIBLE ACCELERATION AND DISPLACEMENT SPECTRA FOR SEISMIC DESIGN CODES , 1999 .

[6]  C. Allin Cornell,et al.  PROBABILISTIC SEISMIC DEMAND ANALYSIS: SPECTRUM MATCHING AND DESIGN. , 2000 .

[7]  Vinay K. Gupta,et al.  Wavelet‐based characterization of design ground motions , 2002 .

[8]  Vinay K. Gupta,et al.  WAVELET-BASED GENERATION OF SPECTRUM COMPATIBLE TIME-HISTORIES , 2002 .

[9]  P. Malhotra.  Strong-Motion Records for Site-Specific Analysis , 2003 .

[10]  Farzad Naeim,et al.  Selection and Scaling of Ground Motion Time Histories for Structural Design Using Genetic Algorithms , 2004 .

[11]  Albert Tarantola,et al.  Inverse problem theory - and methods for model parameter estimation , 2004 .

[12]  Julian J. Bommer,et al.  THE USE OF REAL EARTHQUAKE ACCELEROGRAMS AS INPUT TO DYNAMIC ANALYSIS , 2004 .

[13]  Julian J. Bommer,et al.  Processing of strong-motion accelerograms: needs, options and consequences , 2005 .

[14]  Julian J. Bommer,et al.  Scaling of spectral displacement ordinates with damping ratios , 2005 .

[15]  Luis E. Suarez,et al.  Generation of artificial earthquakes via the wavelet transform , 2005 .

[16]  J. Bommer,et al.  Influence of long‐period filter cut‐off on elastic spectral displacements , 2006 .

[17]  N. Abrahamson,et al.  BIAS CAUSED BY USE OF SPECTRUM COMPATIBLE MOTIONS , 2006 .

[18]  N. Abrahamson,et al.  Selection of ground motion time series and limits on scaling , 2006 .

[19]  Liu Jie-ping,et al.  Elementary Introduction to Eurocode 8-design of structures for earthquake resistance , 2006 .