Seismic Hazard Assessment Model for Urban Water Supply Networks

Yoo, Do Guen; Jung, Donghwi; Kang, Doosun; Kim, Joong Hoon; Lansey, Kevin

doi:10.1061/(asce)wr.1943-5452.0000584

Cited by 50 publications

(50 citation statements)

References 14 publications

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“…A hydraulic model is simulated in this subsection to assess the suitability of using the proposed metric during the restoration phase. The performance of the proposed metric is evaluated using serviceability index SI, a frequent used surrogate measure of hydraulic reliability in resilience applications of WDNs [57]. A topological map of LWDN was exported from the Arc-GIS shapefile and fed into WaterGEMS software [58] which was used to build and run the hydraulic simulation model.…”

Section: Hydraulic Evaluationmentioning

confidence: 99%

A New Metric for Assessing Resilience of Water Distribution Networks

Assad

Moselhi

Zayed

2019

Water

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Water distribution networks (WDNs) face various types of hazards during their extended life. Ensuring proper functioning of WDNs has always been a major concern for utility managers because of their impact on public health and safety. Resilience is an emerging concept that aims at maintaining functionality of the WDNs. Most of the previously developed resilience frameworks employed simulation methods to assess resilience of the WDNs, focusing only on the specific aspects of resilience. There is a need to develop a holistic approach to evaluate the resilience of WDNs considering various dimensions of resilience. This paper presents a new multi-attribute resilience metric based on the robustness and redundancy of the WDNs, which can be used to achieve the purpose. The developed metric is used to evaluate the resilience of a WDN in the city of London, Ontario. An optimization framework for enhancing the current resilience level is also presented. Resilience of the network is found to increase around 20% with a $500,000 investment. A hazard scenario is then analyzed to illustrate the practicality of using this metric in selecting effective restoration strategies. The proposed metric can be utilized by water agencies to evaluate and enhance the resilience of WDNs, as well as to optimize the recovery process after disruptive events.

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Section: Hydraulic Evaluationmentioning

confidence: 99%

A New Metric for Assessing Resilience of Water Distribution Networks

Assad

Moselhi

Zayed

2019

Water

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“…Emergency management in water distribution systems is a subject that has been commonly addressed in publications over the last few years [1][2][3][4]. The problem that has been presented in this paper discusses a number of issues such as resilience of water distribution systems (WDSs) [5][6][7][8][9], valve topology for reliability analyses [10], optimization of restoration processes [11], design of water distribution systems [12][13][14], enhancement of strategies for resilience of water distribution systems [15], methodology of water networks modeling under emergency conditions [16], resilience index for urban water systems [17,18], and recovery strategy of water distribution systems after a disaster [13].…”

Section: Introductionmentioning

confidence: 99%

Ranking Approach to Scheduling Repairs of a Water Distribution System for the Post-Disaster Response and Restoration Service

Bałut

Brodziak

Bylka

et al. 2019

Water

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: On the maintenance task list of each water distribution system (WDS) operator, determination of the order of undertaken repairs seems quite a typical task. Characteristics of damages, their localization, and other factors that influence repair sequencing have a sound impact on the execution of such tasks. In the case of the most complex cases where numerous failures of different types occur at the very same time (i.e., due to earthquakes), there is a long list of selection criteria that have to be analyzed to deliver an objectively logical schedule for repair teams. In this article, authors attempt to find out if it is possible to define pipe rankings in having obtained the best factors for defined objective functions (criteria), making it feasible to deliver judicious repair sequencing. For the purposes of this paper, a survey has been carried out. Its conclusions made it possible to propose a method to create rankings of pipes and evaluate them using a selected multicriteria decision method: preference ranking organization method for enrichment evaluation (PROMETHEE). The work was carried out for five different disaster scenarios that had been supplied by ‘The Battle of Post-Disaster Response and Restoration’ organization committee. Obtained results might be further used to finetune this sequencing method of undertaken repairs, while conclusions could be useful to model similar events in WDS when required. This article is an extended paper based on the conference preprint presented at the 1st International Water Distribution Systems Analysis (WDSA)/International Computing & Control for the Water Industry (CCWI) Joint Conference in July 23–25, 2018 in Kingston, Ontario, Canada.

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“…Hence, many methods have been proposed to estimate earthquake hazard empirically or statistically (e.g., [5][6][7][8]), and use them as inputs for repair rate curves for estimating pipeline damage. These methods are often used to estimate the seismic damage done to pipeline networks for water distribution [1][2][3]. However, such methods have limited estimation accuracy when applied to ground with complex geometry, and it is not straightforward to consider three-dimensional (3D) ground effects [9].…”

Section: Introductionmentioning

confidence: 99%

“…Because water distribution systems work under hydraulic pressure, their seismic performance is usually assessed by excluding any damaged pipelines and conducting hydraulic simulation over the remaining network [1][2][3]. Conducting many such simulations under anticipated earthquake scenarios helps identify the critical parts of the system and decide on effective countermeasures.…”

Section: Introductionmentioning

confidence: 99%

Development of Three-Dimensional Soil-Amplification Analysis Method for Screening for Seismic Damage to Buried Water-Distribution Pipeline Networks

et al. 2018

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Abstract:A soil-amplification analysis method is developed that uses high-resolution ground data and a three-dimensional nonlinear dynamic finite-element method to screen for possible areas of seismic damage to buried water-distribution pipeline networks. The method is applied to a cut-and-fill developed area in Japan, whose water-distribution pipeline network was severely damaged in the 2011 off the Pacific Coast of Tohoku Earthquake. The obtained soil amplification is compared with known points of pipeline damage to check the validity of the analysis. A sensitivity test is also conducted to account for uncertainties in the properties of the ground material. From the results, it is expected that the developed soil-amplification method could be used to screen for possible damage to buried pipelines in a given area, and used to support methods for estimating damage to buried pipelines based on observations and seismic indices.

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Seismic Hazard Assessment Model for Urban Water Supply Networks

Cited by 50 publications

References 14 publications

A New Metric for Assessing Resilience of Water Distribution Networks

A New Metric for Assessing Resilience of Water Distribution Networks

Ranking Approach to Scheduling Repairs of a Water Distribution System for the Post-Disaster Response and Restoration Service

Development of Three-Dimensional Soil-Amplification Analysis Method for Screening for Seismic Damage to Buried Water-Distribution Pipeline Networks

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