Risk-Based Reliability and Cost Analysis of Utility Poles Subjected to Tornado Hazard

Braik, Abdullah M.; Salman, Abdullahi M.; Li, Yue

doi:10.1061/(asce)as.1943-5525.0001029

Cited by 14 publications

(9 citation statements)

References 66 publications

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“…As mentioned in the case study, since the actual shape of a tornado path is difficult to model, it is typically assumed to be rectangular in shape. The area inside the rectangular path is then classified into multiple EF ratings which relates each tornado scale to a lower and upper bound of 3-s average gust wind speed [10], which can then be used to derive the fragility curves for the power poles and lines.…”

Section: Discussion/comparison Of Both Hazardsmentioning

confidence: 99%

“…When comparing the number and ratings of tornadoes hitting a region with the probabilities of occurrence obtained from current hazard maps, it is clear that the high frequency of tornadoes is not reflected in the hazard maps because of the small path area of tornadoes. For this reason, tornado riskbased studies in tornado-active regions are better performed using scenario-based analysis [10].…”

Section: Tornado Hazard Analysismentioning

confidence: 99%

“…To get the stress demand, S(t), at the ground line, the wind force acting on the pole and the wires can be calculated using equations from [2]. For tornadoes, some modification of the equations might be necessary as discussed in detail in [10].…”

Section: Component-level Risk Assessmentmentioning

confidence: 99%

“…To evaluate the time-dependent decrease in strength for the poles, the decay model developed by Wang et al [44] is adopted for wood poles, the corrosion model developed by [14] is adopted for steel poles, and the corrosion model developed by [15] is adopted for PC poles. More details can be found in [10]. Figure 7.9 shows the fragility curves for new and aged poles.…”

Section: Mitigation Strategymentioning

confidence: 99%

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Risk-Based Management of Electric Power Distribution Systems Subjected to Hurricane and Tornado Hazards

Salman

Braik³

et al. 2021

Springer Tracts in Civil Engineering

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Extreme events, especially weather-related events, are the leading cause of power outages in many countries around the world. Hurricanes and tornadoes are especially destructive and have caused billions of dollars in direct losses due to damage to power systems and indirect losses due to power outages. There is, therefore, a need to implement risk management strategies to reduce such losses and ensure that power systems are reliable and resilient. This chapter presents a framework for risk management of electric power distribution systems subjected to hurricane and tornado hazards. Methods for hazard analysis and component-and system-level risk analysis are discussed. Two case studies are presented to demonstrate the application of the framework. Various risk mitigation strategies such as the use of alternative pole material, targeted hardening of systems, regular preventive maintenance, and enhancement of design are considered in the case studies. Risk and cost-benefit analysis methods are presented to evaluate the effectiveness of the various mitigation strategies. A methodology for optimizing the preventive and corrective maintenance of distribution poles to reduce risk and minimize cost is also presented.

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Section: Discussion/comparison Of Both Hazardsmentioning

confidence: 99%

Section: Tornado Hazard Analysismentioning

confidence: 99%

Section: Component-level Risk Assessmentmentioning

confidence: 99%

Section: Mitigation Strategymentioning

confidence: 99%

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Risk-Based Management of Electric Power Distribution Systems Subjected to Hurricane and Tornado Hazards

Salman

Braik³

et al. 2021

Springer Tracts in Civil Engineering

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“…On the subject of reliability and cost analysis of infrastructures in extreme conditions, Ierimonti et al (2019) worked on a cost-based decision framework for tall buildings in their paper "Cost-based design of nonstructural elements for tall buildings under extreme wind environments." Also focused on risk-based reliability and cost analysis, Braik et al (2019) focused on the power distribution system in their paper "Risk-based reliability and cost analysis of utility poles subjected to tornado hazard. "…”

mentioning

confidence: 99%

Civil Infrastructures under Extreme Environments

Zhang

James

2021

J. Aerosp. Eng.

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The special collection on Civil Infrastructures under Extreme Environments is available in the ASCE Library (https://ascelibrary.org /page/jaeeez/under_extreme_environments).Civil infrastructures could experience extreme environments during their life cycles, threatening their safety, serviceability, functionality, and sustainability. Current state-of-the-art engineering practices and research frontiers for terrestrial civil infrastructures under extreme environments could provide valuable background knowledge that will enhance the designs of aerospace structures and extraterrestrial structures and aid in the creation of suitable built environments for human habitation. In assessing civil infrastructures under extreme environments, engineers face challenges in quantifying structural performances for their safety and resilience.This special collection synthesizes the state of the art in the areas of design, analysis, monitoring, construction, and rehabilitation of civil infrastructures under extreme environments. It includes stateof-the-art knowledge and expertise from researchers, engineers, operators, and owners to help understand and quantify the performance of civil infrastructures exposed to extreme terrestrial environments during their life cycles. This special collection includes 12 articles, received in response to a related call for papers published online between March 2019 and August 2020. In general, the included papers offer a diverse, international perspective from research groups around the world. The papers cover a broad range of topics that can generally be grouped into three subject areas: performance assessment of infrastructures in extreme conditions; reliability and cost analysis of infrastructures in extreme conditions; and experimental study of infrastructures in extreme conditions.On the subject of performance assessment of infrastructures, Hou et al. (2019) proposed a new simulation methodology of the traffic performance of partially blocked roadway and bridge links due to hazardous events in their paper "Traffic performance assessment methodology of degraded roadway links following hazards." In their paper "Extreme response of a sea-crossing bridge tower under correlated wind and waves," Fang et al. (2019) evaluated the dynamic responses of bridge towers under the correlated wind and wave loading conditions. Also investigating long-span bridges, Liu et al. (2020) evaluated the wind turbulence intensity effects on the fatigue damage accumulations of long-span bridges in their paper "Stress-level buffeting analysis and wind turbulence intensity effects on fatigue damage of long-span bridges." In their paper "Hybrid nonlinear seismic analysis of bridges with moving traffic," Chen et al. (2020) proposed a hybrid simulation approach to conduct nonlinear seismic analyses of bridge-traffic-earthquake systems. In their paper "Typhoon-induced wind pressure characteristics on large terminal roof based on mesoscale and microscale © ASCE 02021001-2 J. Aerosp. Eng.

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A digital twin framework for efficient electric power restoration and resilient recovery in the aftermath of hurricanes considering the interdependencies with road network and essential facilities

Braik,

Koliou

2024

Resilient Cities and Structures

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Risk-Based Reliability and Cost Analysis of Utility Poles Subjected to Tornado Hazard

Cited by 14 publications

References 66 publications

Risk-Based Management of Electric Power Distribution Systems Subjected to Hurricane and Tornado Hazards

Risk-Based Management of Electric Power Distribution Systems Subjected to Hurricane and Tornado Hazards

Civil Infrastructures under Extreme Environments

A digital twin framework for efficient electric power restoration and resilient recovery in the aftermath of hurricanes considering the interdependencies with road network and essential facilities

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