Seismic fragility analysis of concrete dams: A state-of-the-art review

Hariri-Ardebili, Mohammad Amin

doi:10.1016/j.engstruct.2016.09.034

Cited by 96 publications

(32 citation statements)

References 41 publications

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“…These values are useful to estimate some general relations that can be used to aid design. Moreover, the maximum elastic and elastoplastic displacements are of the order of ~ 0.10-0.20 m that, in relation to the maximum dam height, is Hd/1000, in accordance with the literature [6].…”

Section: Discussionsupporting

confidence: 89%

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: Discussionsupporting

confidence: 89%

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

Zacchei

Molina

2020

Sustainability

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“…This is carried out in order to select the QIs to be detected and real case histories, numerical models and expert judgements are exploited. Since there are no case histories on concrete dam failures after seismic events [32,33], numerical models are the only way to predict how such structures deal with collapse [2,33]. Due to the quasi-brittle nature of the material, collapse mechanisms of concrete dams are mostly driven by tensile crack development [34].…”

Section: Failure Mechanisms and Damage Development In Concrete Damsmentioning

confidence: 99%

“…Moreover, the levels of reliability required to important infrastructures have been recently increased in order to meet the requests of communities for greater safety, also in light of the revaluation of some areas as seismic [1]. Together with the well-known issues related to the quantification of dam seismic safety [e.g., calibration of load-and-resistance-factor approaches, definition of limit states (LSs)] [2], this justifies the need for strategies that preserve such structures. In this context, the implementation of structural health monitoring (SHM) is very important, as it improves dam control and reduces the uncertainties involved in predicting their dynamic behaviour.…”

Section: Introductionmentioning

confidence: 99%

Dynamic structural health monitoring for concrete gravity dams based on the Bayesian inference

Sevieri

Falco

2020

J Civil Struct Health Monit

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The preservation of concrete dams is a key issue for researchers and practitioners in dam engineering because of the important role played by these infrastructures in the sustainability of our society. Since most of existing concrete dams were designed without considering their dynamic behaviour, monitoring their structural health is fundamental in achieving proper safety levels. Structural Health Monitoring systems based on ambient vibrations are thus crucial. However, the high computational burden related to numerical models and the numerous uncertainties affecting the results have so far prevented structural health monitoring systems for concrete dams from being developed. This study presents a framework for the dynamic structural health monitoring of concrete gravity dams in the Bayesian setting. The proposed approach has a relatively low computational burden, and detects damage and reduces uncertainties in predicting the structural behaviour of dams, thus improving the reliability of the structural health monitoring system itself. The application of the proposed procedure to an Italian concrete gravity dam demonstrates its feasibility in real cases.

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“…As a most critical component of our energy generating,high dam is playing an increasingly important role in social infrastructures for large water reservoir impounded (Hariri-Ardebili and Saouma, 2016). A series of high dams have been constructed, under-constructed or waiting-constructed and put into operation in all over the world during the past several decades, such as Shuangjiangkou arch dam, Jinping-I arch dam, Nurek Earth core rock fill dam, Daniel Johnson arch dam, Sayano-Shushenskaya arch dam and Xiluodu arch dam (Cheng and Liu et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Risk analysis of concrete pouring operation during high dam construction

2016

Revista de la Facultad de Ingeniería

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Due to the close connection of the high dam concrete pouring operation, the frequent risk evolution path of the personnel, construction machinery and the field environment is complex, which leads to high risk cost and frequent accidents. In order to reduce the operation risk and decrease the frequency of accidents, the risk theory needs to be utilized to analyze the risk of high dam concrete pouring operation. In this paper, we put forward the theory of risk interface framework and a fishbone diagram approach to analyze the factors of this operation. The general idea is that find the risk sources,describe risk interface and put forward the mechanism of high dam concrete pouring accident. Secondly, account forenergy carriers, after that the personnel, machine and environment are abstracted as the energy carriers or thedangerous energy carriers, the risk factors are identified. Then risk analysis is carried out according to the theory of risk interface. Meanwhile classify the risk factors according to fishbone diagramand their respective categories. The final risk analysis shows that thedangerous energy carriers are frequently interacted with each other and the risk factors are complex, and the possibility of accidents is extremely high in high dam concrete pouring operation.

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Seismic fragility analysis of concrete dams: A state-of-the-art review

Cited by 96 publications

References 41 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

Dynamic structural health monitoring for concrete gravity dams based on the Bayesian inference

Risk analysis of concrete pouring operation during high dam construction

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