Seismic hazard assessment of arch dams via dynamic modelling: an application to the Rules Dam in Granada, SE Spain

Zacchei, Enrico; Molina, José Luis Malo de; Brasil, Reyolando Manoel Lopes Rebello da Fonseca

doi:10.1007/s40999-017-0278-4

Cited by 10 publications

(15 citation statements)

References 30 publications

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“…The parameters used to develop the analysis in this paper are listed in Table 1. These parameters come from precedent studies [47][48][49], and here are considered as RVs to carry out a sustainability assessment, and are therefore plotted by a probabilistic distribution with a mean and standard deviation (SD). In this paper, a particular attention about the "management level schedules" and "risk assessment" is considered; the former estimates the possible scenarios, whereas the latter defines the hazards.…”

Section: Methodsmentioning

confidence: 99%

Reviewing Arch-Dams’ Building Risk Reduction Through a Sustainability–Safety Management Approach

Zacchei

Molina

2020

Sustainability

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The importance of dams is rapidly increasing due to the impact of climate change on increasing hydrological process variability and on water planning and management need. This study tackles a review for the concrete arch-dams’ design process, from a dual sustainability/safety management approach. Sustainability is evaluated through a design optimization for dams´ stability and deformation analysis; safety is directly related to the reduction and consequences of failure risk. For that, several scenarios about stability and deformation, identifying desirable and undesirable actions, were estimated. More than 100 specific parameters regarding dam-reservoir-foundation-sediments system and their interactions have been collected. Also, a summary of mathematical modelling was made, and more than 100 references were summarized. The following consecutive steps, required to design engineering (why act?), maintenance (when to act) and operations activities (how to act), were evaluated: individuation of hazards, definition of failure potential and estimation of consequences (harm to people, assets and environment). Results are shown in terms of calculated data and relations: the area to model the dam–foundation interaction is around 3.0 Hd2, the system-damping ratio and vibration period is 8.5% and 0.39 s. Also, maximum elastic and elasto-plastic displacements are ~0.10–0.20 m. The failure probability for stability is 34%, whereas for deformation it is 29%.

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Section: Methodsmentioning

confidence: 99%

Reviewing Arch-Dams’ Building Risk Reduction Through a Sustainability–Safety Management Approach

Zacchei

Molina

2020

Sustainability

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“…In the Spanish code [18], K is listed for each city and rage 1.0 -1.3. It accounts the seismic hazard but , given that there are many unknown parameters that represent the complexity at defining the seismic hazard [35,36], the authors believe that K has no meaning.…”

Section: Definition Of Artificial Accelerogramsmentioning

confidence: 99%

“…The parameter δ = 0.245 is called "spread factor" and is correlated to ξ = 0.05. The nominal duration has been assumed T s = 11 s. The choice of the nominal duration value can be assumed in accordance to the significant duration, which it was shown in previous work [36,38].…”

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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“…There are several procedures that provide seismic inputs for structures designing. These procedures can be deterministic, using elastic spectra from codes [7,8], synthetic spectra by attenuation equations [5,47], deterministic seismic hazard analysis [30,44], artificial accelerograms obtained from power spectrum density functions [23,26], seismic coefficients by amplification of inertial forces [35], time-history analyses from database [19,21], spectrum compatible analyses by scaling factor [36,42,73].…”

Section: Introductionmentioning

confidence: 99%

“…The pb-PSHA is mainly based on the PSHA, which is nowadays the more complete method to estimate the seismic input because it accounts for the seismotectonic and geological context and the probability of occurrence of earthquakes [30,38,39,40,41,43,45,73].…”

Section: Introductionmentioning

confidence: 99%

A New Approach For Physically-Based Probabilistic Seismic Hazard Analysis For Portugal

Zacchei¹,

Brasil²

2021

Preprint

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Probabilistic seismic hazard analysis (PSHA) is nowadays the more complete analysis method to estimate the seismic input for structural analysis. However, it is strongly influenced by seismogenic parameters and attenuation equations. Here PSHA using empirical Green’s functions (EGFs) with 2 + 2 variables is carried out, which are correlated through the moment magnitude. This combination, already known as “physically-based PSHA (pb-PSHA)”, is an original approach that should be disseminated because it provides a good alternative in countries where the seismogenic zones and attenuation equations are not well known. The proposed model is based on linear faults, random, periodic, impulsive, linear source functions, and a punctual hypocentre. Differential equations are explained. Results are shown in terms of new seismic parameters, specific return periods and ground accelerations. The studied country is Portugal. It appears to the authors that no study has been published about pb-PSHA for Portugal.

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Seismic hazard assessment of arch dams via dynamic modelling: an application to the Rules Dam in Granada, SE Spain

Cited by 10 publications

References 30 publications

Reviewing Arch-Dams’ Building Risk Reduction Through a Sustainability–Safety Management Approach

Reviewing Arch-Dams’ Building Risk Reduction Through a Sustainability–Safety Management Approach

Artificial accelerograms to estimate damage of dams by using failure criteria

A New Approach For Physically-Based Probabilistic Seismic Hazard Analysis For Portugal

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