Two identical reinforced concrete (RC) bridge piers including a rectangular and circular section are considered. The influence of corrosion damage, non-stationary characteristics ground motions, cross-sectional shape on nonlinear dynamic behaviour, failure mechanism probability these is investigated. An advanced modelling technique, capable coupled inelastic buckling low-cycle fatigue degradati...

Probabilistic seismic demand analysis (PSDA) is known as one of the critical intermediate steps in performance-based earthquake engineering (PBEE) design framework. Accuracy PSDA influenced by various sources uncertainties and mostly that stemming from ground motion-related variabilities. By taking a representative reinforced concrete (RC) continuous girder bridge case study, twenty-eight commo...

The Hartley transform, a real-valued alternative to the complex Fourier transform, is presented as an efficient tool for the analysis and simulation of earthquake accelerograms. This paper is introduced a novel method based on discrete Hartley transform (DHT) and radial basis function (RBF) neural network for generation of artificial earthquake accelerograms from specific target spectrums. Acce...

Abstract We search in the continuous GPS 3-D displacement data for signals of normal modes Earth’s free oscillation that were excited by 2011 Mw 9.0 Tohoku earthquake. A previous study has reported such a detection; we here conduct more comprehensive and detailed study. use from three separate networks: (i) about 1000 stations Japan GEONET; (ii) 600 western USA PBO; (iii) 140 global IGS, solve ...

The frequency content and time duration of earthquakes are as effective the peak ground acceleration on structural damage. Therefore, using rapid seismic vulnerability assessment methods that consider earthquake history is noticeable. Kermanshah a historical city generally affected by far-field earthquakes. it necessary to effect low-frequency shocks in evaluating buildings this city. Herein, h...

37. E. Evans, Annu. Rev. Biophys. Biomol. Struct. 30, 105 (2001). 38. G. I. Bell, Science 200, 618 (1978). 39. For adhesive interactions important in soft tissues and organs of eukaryotic cell systems, the average times toff° reported for spontaneous dissociation of ligand/receptor bonds range from a fraction of a second to 100 s or more. 40. Because of thermal activation, the appropriate unit ...

Let n1 and n2 be the indexes of refraction of two homogeneous and isotropic media I and II, respectively. Suppose that from a point O inside medium I light emanates with intensity f (x) for x ∈ Ω . We want to construct a refracting surface R parameterized as R = {ρ(x)x : x ∈ Ω}, separating media I and II, and such that all rays refracted by R into medium II have directions in Ω∗ and the prescri...

The aim of far field splitting for time-harmonic acoustic or electromagnetic waves is to decompose the far field of a wave radiated by an ensemble of several compactly supported sources into the individual far field components radiated by each of these sources separately. Without further assumptions this is an ill-posed inverse problem. Observing that far fields radiated by compactly supported ...