Spectrum-compatible accelerograms with harmonic wavelets
Spectrum-compatible accelerograms with harmonic wavelets
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DOI：
10.1016/j.compstruc.2014.10.013
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发表时间：
2015-01
影响因子：
4.7
通讯作者：
Domenico Cecini;A. Palmeri
中科院分区：
文献类型：
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作者：
Domenico Cecini;A. Palmeri
现代建筑规范允许对具有记录和/或生成的加速度记录的抗震结构进行分析和设计，前提是它们与弹性设计谱兼容。然后，产生具有实际非平稳特性的符合谱的加速度图的问题，这反过来可能在非线性地震响应中发挥重要作用。本文提出了一种基于调和小波变换的迭代方法，通过对记录的时间和频率局部化的加速度图进行确定性校正来匹配目标频谱。数值算例验证了该方法的有效性，可有效地应用于设计实践。
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.