A Novel Analytical Model of Power Spectral Density Function Coherent With Earthquake Response Spectra

Barone, Giorgio; Iacono, F.; Navarra, Giacomo; Palmeri, Alessandro

doi:10.7712/120215.4280.805

Cited by 16 publications

(24 citation statements)

References 13 publications

(13 reference statements)

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“…the seismic load is modeled accordingly to RS prescribed by Eurocode 8 (UNI ENV 1998:2005, 2005. In particular, it has been modeled as a process having an EC8-compatible PSD function, obtained considering the ground type A and a pseudo-stationary duration T s = 20 s. Nevertheless, similar results can be obtained for a wide range of building codes RS covered by the model adopted (Barone et al, 2015(Barone et al, , 2019. In Table 1, the parameters used to define the RS and the correspondent values in PSD analytical model, are reported.…”

Section: Numerical Applicationsmentioning

confidence: 65%

“…Moreover, it is assumed that earthquake acceleration timehistories may be modeled as finite time duration samples of a zero-mean Gaussian stationary stochastic process, completely defined by the knowledge of its Power Spectral Density (PSD) function. In this case, the vector r collects the parameters of the seismic input stochastic model, obtained by using recently proposed analytical expressions of PSDs consistent with assigned RS, that cover most of the international building codes (Barone et al, 2015(Barone et al, , 2019. The Appendix reports further details of this PSD model along with the closed-form relationship between the RS parameters and the consistent PSD function ones.…”

Section: Problem Formulationmentioning

confidence: 99%

“…In order to reduce the great computational burden involved in these problems, two novelty aspects have been here proposed and introduced. Firstly, assuming that earthquake time-histories can be modeled as samples of a stationary stochastic process, an analytical representation of earthquake load Power Spectral Density (PSD) functions consistent with seismic codes Response Spectra (RS) ( Barone et al, 2015Barone et al, , 2019 have been adopted. Secondly, an algorithm has been set up in order to obtain approximate analytical expressions of the response first spectral moments for not-classically damped Multi-degrees-of-freedom (MDOF) systems, without performing any numerical integration.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An Efficient Stochastic Linearisation Procedure for the Seismic Optimal Design of Passive Control Devices

Navarra

Iacono

Oliva

2020

Front. Built Environ.

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Section: Numerical Applicationsmentioning

confidence: 65%

Section: Problem Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Efficient Stochastic Linearisation Procedure for the Seismic Optimal Design of Passive Control Devices

Navarra

Iacono

Oliva

2020

Front. Built Environ.

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“…The methodology developed by Barone et al's (2015) [32] is explained as it follows (see Figure 2). After that, the deterministic modulation function I(t) and the amplitude of the accelerogram A i ≈ √2PSD(ω i )Δω i [33] are calculated.…”

Section: Definition Of Artificial Accelerogramsmentioning

confidence: 99%

Artificial accelerograms to estimate damage of dams by using failure criteria

Zacchei

Molina

2018

Scientia Iranica

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in structures. Master's degree in structural engineering from University Roma Tre (UNIROMA3), Italy. Bachelor's degree in civil engineering from UNIROMA3. Five scholarships, with two of them for stays in public Brazilian R&D centers: EP-USP (two years) and University of São Paulo State (UNESP) (seven months). Reviewer of SCOPUS and WoS journals, researcher in the group of Dynamic Experimental Analysis of Structures at EP-USP and member of the Portuguese Society of Seismic Engineering (SPES). Six-year work experience in engineering, especially in the major area of civil projects and structures, hydraulic engineering and road infrastructure. Civil engineer and job leader in national and international companies. Currently, he is a PhD student at UNESP in Structures. Researcher with several scientific papers published in high impact journals and presentations at congresses. AbstractThe aim of this paper is to analyse dam's damage by using two recent methodologies. The first method has been used to define the performance and response curves of concrete gravity dams. The second method defines the seismic input which has been obtained from power spectral density function consistent with the response spectrum. Both methods set themselves as efficient, practical and useful to develop quite complicated analysis as the construction of the stochastic process to define the synthetic earthquake and the estimation of cracks in the dam's body. These methodologies have been explained and revised to improve their use. The fluid behaviour contained by arch-dams is compared with the fluid behaviour in storage tanks by studying the sloshing phenomenon which is usually neglected for dams. For the mathematical modelling, interactive programming language has been used.3

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“…No entanto, é necessário realizar o procedimento diversas vezes para vários parâmetros do espectro de resposta. Diante disso, Baroni et al (2015) Portanto, pode-se descrever o PSD como uma função com três intervalos e com uma estrutura matemática simples e totalmente definida por apenas alguns parâmetros determinados a partir da equação exata de G Üg ( ), sendo G 0 o valor de pico do PSD para…”

Section: Função Densidade Espectral De Potência (Psd)unclassified

Acelerogramas artificiais de sismos aplicados a edificações.

Brito¹

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Apesar de fortes eventos sísmicos serem raros no Brasil, engenheiros estruturais brasileiros são frequentemente envolvidos em tal análise para os países latino-americanos vizinhos. Informações sobre históricos de aceleração sísmica, de natureza aleatória, não estão em geral disponíveis, devido, em parte, à falta de registros. Para contornar tal situação, os códigos de construção indicam o uso de acelerogramas artificiais, mas não fornecem metodologia para sua obtenção. A informação normalizada é o chamado espectro de resposta elástico, que fornece a aceleração de resposta máxima para um sistema linear de um grau de liberdade. Muitas pesquisas estão sendo desenvolvidas a fim de gerar acelerogramas artificiais compatíveis com os espectros de norma. Assim, neste trabalho se apresenta uma proposta para a geração de acelerograma artificial compatível com espectro de resposta regulamentar. Para exemplo de aplicação, é gerado um acelerograma artificial compatível com a Norma Brasileira NBR 15421: 2006 e aplicado à base de um edifício shear building de dez pavimentos e através de integração numérica por diferenças finitas passo-a-passo no domínio do tempo é calculado o deslocamento do último pavimento deste edifício. De forma semelhante, é gerado um acelerograma artificial compatível com a Norma Venezuelana COVENIN 1756: 2001 e aplicado à base de um reservatório d'água sobre quatro pilares e estudado o seu comportamento elastoplástico perfeito.

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A Novel Analytical Model of Power Spectral Density Function Coherent With Earthquake Response Spectra

Cited by 16 publications

References 13 publications

An Efficient Stochastic Linearisation Procedure for the Seismic Optimal Design of Passive Control Devices

An Efficient Stochastic Linearisation Procedure for the Seismic Optimal Design of Passive Control Devices

Artificial accelerograms to estimate damage of dams by using failure criteria

Acelerogramas artificiais de sismos aplicados a edificações.

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