The input motion for seismic analysis of building structures is generally specified in design codes in terms of response spectrum. Therefore, real or simulated time histories for ground motions whose response spectrum matches approximately the design spectrum is desired. Among the various techniques currently available for generating spectrum compatible time histories it is possible to distingu...

In this paper, we introduce a novel algorithm for morphing any accelerogram into a spectrum matching one. First, the seed time series is re-expressed as a discrete Volterra series. The first-order Volterra kernel is estimated by a multilevel wavelet decomposition using the stationary wavelet transform. Second, the higher-order Volterra kernels are estimated using a complete multinomial mixing o...

The paper discusses the fast seismic performance assessment of structures using truncated pulse-like ground motion records. It is shown that it possible to truncate a signal novel wavelet-based definition identifies duration predominant velocity pulse. time-history still able efficiently reproduce increased demand near-field records typically produce. Substituting original with signal, can sign...

The evolution of plastic deformation and damage in steel frame buildings caused by seismic action is simulated based on a modified damage model. This model combines nonlinear isotropic and kinematic hardening criteria with a damage evolution law expressed in terms of plastic displacement. A nine-story steel frame is chosen as a reference structure, and a nonlinear damage analysis is performed u...

This paper presents the findings of an experimental investigation on a reinforced concrete frame structure (ordinary moment resistant frame). The test model was subjected to lateral excitation employing 1994 Northridge earthquake accelerogram. fabricated in 1:3 reduced scale acquiring dimensional similarities. utilized ingredient mix ratio 1:1.65:1.75 and water binder 0.47. dynamic characterist...

Brazil is in an intraplate area of low to moderate seismicity, this means that few or no records strong ground motions are available. Part the site response analysis and seismic design structures require use acceleration time-histories compatible with a specified target spectrum. This study aims utilize methodologies based on existing earthquake from well-known database synthetic accelerograms ...