Probabilistic Seismic Safety Evaluation of Precode Cylindrical Oil Tanks

Razzaghi, Mehran S.; Eshghi, Sassan

doi:10.1061/(asce)cf.1943-5509.0000669

Cited by 27 publications

(12 citation statements)

References 32 publications

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“…where U½: ¼ the standard normal distribution function and b = logarithmic standard deviation of the variables. This assumption has been made by several researchers (Choi et al 2004;Hancilar et al 2013;Razzaghi and Eshghi 2014;Shinozuka et al 2000). According to Eq.…”

Section: Theoretical Backgroundmentioning

confidence: 96%

“…A fundamental requirement for estimating the seismic performance of a particular structure is the ability to quantify the potential for damage as a function of earthquake intensity (e.g., peak ground acceleration). A probabilistic seismic performance analysis (PSPA) based on fragility curves provides a framework to estimate the seismic performance and reliability of the structures (Ellingwood et al 2004;Razzaghi and Eshghi 2014;Jeon et al 2015). Fragility functions relate the probability that the demand on a particular structure exceeds its capacity to an earthquake severity measure.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

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Seismic fragility analysis of typical pre-1990 bridges due to near- and far-field ground motions

Mosleh

Razzaghi

Jara

et al. 2016

Int J Adv Struct Eng

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Bridge damages during the past earthquakes caused several physical and economic impacts to transportation systems. Many of the existing bridges in earthquake prone areas are pre-1990 bridges and were designed with out of date regulation codes. The occurrences of strong motions in different parts of the world show every year the vulnerability of these structures. Nonlinear dynamic time history analyses were conducted to assess the seismic vulnerability of typical pre-1990 bridges. A family of existing concrete bridge representative of the most common bridges in the highway system in Iran is studied. The seismic demand consists in a set of far-field and nearfield strong motions to evaluate the likelihood of exceeding the seismic capacity of the mentioned bridges. The peak ground accelerations (PGAs) were scaled and applied incrementally to the 3D models to evaluate the seismic performance of the bridges. The superstructure was assumed to remain elastic and the nonlinear behavior in piers was modeled by assigning plastic hinges in columns. In this study the displacement ductility and the PGA are selected as a seismic performance indicator and intensity measure, respectively. The results show that pre-1990 bridges subjected to near-fault ground motions reach minor and moderate damage states. Keywords Concrete bridges Á Seismic vulnerability Á Time history analysis Á Fragility curves Á Far-field Á Near-fault & Araliya Mosleh

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Section: Theoretical Backgroundmentioning

confidence: 96%

Section: Theoretical Backgroundmentioning

confidence: 99%

Seismic fragility analysis of typical pre-1990 bridges due to near- and far-field ground motions

Mosleh

Razzaghi

Jara

et al. 2016

Int J Adv Struct Eng

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show abstract

“…The expected seismic performance of a particular structure quantifies the potential for damage as a function of earthquake intensity (e.g., PGA). A probabilistic seismic performance analysis (PSPA), based on fragility curves, provides a framework to estimate the seismic behaviour and reliability of the structures (Ellingwood et al 2004, Razzaghi andEshghi 2014). Fragility functions determine the probability that the demand on a particular structure will reach or exceed its capacity as function of an earthquake intensity measure.…”

Section: Development Of Fragility Curvesmentioning

confidence: 99%

Development of fragility curves for RC bridges subjected to reverse and strike-slip seismic sources

Mosleh¹,

Razzaghi²,

Jara³

et al. 2016

Earthquakes and Structures

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This paper presents a probabilistic fragility analysis for two groups of bridges: simply supported and integral bridges. Comparisons are based on the seismic fragility of the bridges subjected to accelerograms of two seismic sources. Three-dimensional finite-element models of the bridges were created for each set of bridge samples, considering the nonlinear behaviour of critical bridge components. When the seismic hazard in the site is controlled by a few seismic sources, it is important to quantify separately the contribution of each fault to the structure vulnerability. In this study, seismic records come from earthquakes that originated in strike-slip and reverse faulting mechanisms. The influence of the earthquake mechanism on the seismic vulnerability of the bridges was analysed by considering the displacement ductility of the piers. An in-depth parametric study was conducted to evaluate the sensitivity of the bridges' seismic responses to variations of structural parameters. The analysis showed that uncertainties related to the presence of lap splices in columns and superstructure type in terms of integral or simply supported spans should be considered in the fragility analysis of the bridge system. Finally, the fragility curves determine the conditional probabilities that a specific structural demand will reach or exceed the structural capacity by considering peak ground acceleration (PGA) and acceleration spectrum intensity (ASI). The results also show that the simply supported bridges perform consistently better from a seismic perspective than integral bridges and focal mechanism of the earthquakes plays an important role in the seismic fragility analysis of highway bridges.

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“…This fact has been observed in past earthquakes often, such as Emilia (Italy) in 2012, Tohoku (Japan) in 2011, Chile in 2010, Kocaeli (Turkey) in 1999, Kobe (Japan) in 1995, Niigata (Japan) and Alaska (USA) in 1964. They caused significant damages to industrial facilities (Berahman and Behnamfar, 2007;Korkmaz et al, 2011;Myers, 1997;Razzaghi and Eshghi, 2015).…”

Section: Introductionmentioning

confidence: 99%

Fragility Analysis of Atmospheric Storage Tanks by Observational and Analytical Data

et al. 2022

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In this research, seismic fragility analysis of storage tanks is carried out with a large damage database from past earthquakes and analytical studies. At the fragility analysis, a new damage state has been defined. Peak ground acceleration is employed as an intensity measure. Epistemic and aleatory uncertainties are considered. At the observational fragility analysis, logit, probit and cumulative lognormal model and maximum likelihood method are utilized. In this research, Finite Element Analysis is also performed. As a result, new seismic fragility curves for storage tanks obtained and compared with the existing tank fragility curves in the literature.

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Probabilistic Seismic Safety Evaluation of Precode Cylindrical Oil Tanks

Cited by 27 publications

References 32 publications

Seismic fragility analysis of typical pre-1990 bridges due to near- and far-field ground motions

Seismic fragility analysis of typical pre-1990 bridges due to near- and far-field ground motions

Development of fragility curves for RC bridges subjected to reverse and strike-slip seismic sources

Fragility Analysis of Atmospheric Storage Tanks by Observational and Analytical Data

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