Spectrum-compatible accelerograms with harmonic wavelets. (15th January 2015)

• Record Type: Journal Article
• Authors: Cecini, Domenico; Palmeri, Alessandro
• Is Part Of: Computers & structures. Volume 147(2015)
• Page Start: 26
• Page End: 35
• Publication Date: 2015-01-15
• Subjects: Artificial accelerograms -- Earthquake engineering -- Harmonic wavelet transform (HWT) -- Signal processing -- Spectrum-compatible accelerograms; Structural engineering -- Data processing -- Periodicals; Electronic data processing -- Structures, Theory of -- Periodicals; 624.171
• DOI: 10.1016/j.compstruc.2014.10.013
• Languages: English
• ISSNs: 0045-7949

Abstract

Abstract: Modern building codes allow the analysis and design of earthquake-resistant structures with recorded and/or generated accelerograms, provided that they are compatible with the elastic design spectrum. The problem then arises to generate spectrum-compliant accelerograms with realistic non-stationary characteristics, which in turn may play an important role in the non-linear seismic response. In this paper, an iterative procedure based on the harmonic wavelet transform is proposed to match the target spectrum through deterministic corrections to a recorded accelerogram, localised both in time and frequency. Numerical examples demonstrate the performance of this approach, which can be effectively used in the design practice.