future design procedures for civil structures, especially those to be protected from extreme and blast relatedloads, will need to account for temporal evolution of their frequency content. there are, however, several instanceswhere acceleration time histories are required as seismic input. for example, to determine the ultimate resistance andto identify modes of structures’ failure, a nonlinear...

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 artificial accelerograms have been developed for assessing the dynamic response ofstructures. considering seismological properties of the site are necessary for the best simulation ofaccelerograms. the real recorded accelergrams for simulating earthquake phenomenon are used in thearma model. this is due to the fact that the arma model can be considered more advantageous than theothers.in th...

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 ...

We obtained the rupture process and slip distribution of 2022 Mw6.6 Menyuan earthquake by jointly inverting accelerogram data InSAR measurements. The near-field measurements provide good constraints on shallow distributions (<6 km). enable us to better resolve deeper coseismic (>6 combination two types provided improved constrains earthquake. results from joint inversion reveal a 26-km-lo...

Seismic investigation revealed that a fault fracture zone is one of the most vulnerable areas mountain tunnels in earthquakes. For tunnel crossing secondary fault, may be permanently dislocated by causative faults during earthquakes, making subject to combined action seismic motion and dislocation, which makes response more complicated. In order investigate fault-crossing this case explore suit...