Damages observed in locations of Oaxaca due to the Tehuantepec Mw8.2 earthquake, Mexico

Pozos‐Estrada, Adrián; Chávez, Marcos M.; Jaimes, Miguel Á.; Arnau, Oriol; Guerrero, Héctor

doi:10.1007/s11069-019-03662-9

Cited by 18 publications

(7 citation statements)

References 5 publications

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“…This might indicate that the current Mexican standards for earthquake action considerably overestimate the effects on wind turbines of similar sizes to those analyzed in this work. This assertion is supported by observations of recent events, where no damage was observed on turbines from close‐to‐site wind farms after seismic events of large magnitude 38 …”

Section: Discussionsupporting

confidence: 79%

“…More than 80% of the epicenters of strong ground motion in the country are located in this area 37 . In recent years, strong earthquakes have occurred, causing high economic losses on communities, as well as triggering the emergency brake on wind turbines and damaging electrical substations, thus stopping windfarm activities for several weeks 38,39 …”

Section: Wind and Seismic Loadingmentioning

confidence: 99%

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Development of fragility curves of land‐based wind turbines with tuned mass dampers under cyclone and seismic loading

Campo

Pozos‐Estrada

2020

Wind Energy

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Passive damping systems have been widely studied to improve the response of wind turbine structures under operational conditions. However, there is insufficient information on how these systems enhance reliability for extreme loads. Wind farm construction has been growing rapidly in recent decades, thereby moving wind turbine structures to sites with higher seismic and hurricane hazards. This research presents a numerical study performed on three land‐based wind turbines, similar to typical turbines installed in Mexican wind farms, under cyclone‐induced wind and earthquake action. The fictional location of the turbines is justified by the wind capacity distribution of Mexico, which is a country with high seismic and tropical cyclone risk. The wind field is simulated from semiempirical mean velocity models, and the ground motion records are obtained from real events recorded near the assumed site. All the time history analyses assume that the turbines are in parked condition. The results indicate that a fragility reduction of approximately 80% can be achieved under cyclone‐induced winds when passive damping systems are added to the structure, and that the fragility reduction is significantly less under seismic action.

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Section: Discussionsupporting

confidence: 79%

Section: Wind and Seismic Loadingmentioning

confidence: 99%

Development of fragility curves of land‐based wind turbines with tuned mass dampers under cyclone and seismic loading

Campo

Pozos‐Estrada

2020

Wind Energy

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“…Direct disasters are ground vibrations and cracks [51][52][53][54]. There are three main manifestations of damage caused by rupture: First, the direct damage to buildings and engineering facilities, which is also an important cause of the loss of life and property [55,56]. The second is ground surface damage.…”

Section: Literature Reviewmentioning

confidence: 99%

Scenario-Based Comprehensive Assessment for Community Resilience Adapted to Fire Following an Earthquake, Implementing the Analytic Network Process and Preference Ranking Organization Method for Enriched Evaluation II Techniques

Chen

Yan

et al. 2021

Buildings

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Natural hazards bring significant influences on and socioeconomic loss to cities and communities. Historic events show that fire following earthquake (FFE) is the most influential uncertain disturbance on the urban infrastructure system. Under the FFE scenario, the concept of resilience is widely implemented to make up the shortcomings derived from the traditional disaster management methodology. Resilient cities and communities are required to improve the systemic performance in responding to the FFE. To fulfill these goals, measuring community resilience is an essential work for municipal policy makers. Therefore, this study conducted a comprehensive assessment on community resilience adapted to the FFE scenario. The systematic literature review (SLR) was employed to identify the indicators, and the analytic network process (ANP) technique was implemented to determine their weights. 20 indicators were extracted, and 4 communities that encountered FFE in China were selected for the empirical analysis. Thereafter, the preference ranking organization method for enriched evaluation (PROMETHEE) II technique was selected through using the multicriteria decision analysis (MCDA) methods selection framework to fulfill the comprehensive assessment. The results were discussed and demonstrated with graphical analysis for interactive aid (GAIA) technique. The findings revealed that the G Community won the highest score and had the strongest performance. However, H Community had the lowest score and the weakest performance. The proposed comprehensive methods could benefit the decision-makers and the policy executors achieving the community resilience adapted to the FFE scenario by improving the effective indicators.

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“…In seismic active areas, wind turbines with a large slenderness ratio and flexibility are vulnerable to damage caused by the combined action of environmental wind and seismic load. Although the wind turbine structure was not damaged after an MW8.2 earthquake in Mexico [3], the safety of the structure under seismic load is very important because of its destructiveness and uncertainty. According to Industry code DNV-OS-J101 [4] and the International Electrotechnical Commission (IEC) 61400-1 [5], the large-scale wind turbine structures should be designed to resist ground motions when installed in seismically active areas.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Number of Ground Motions on Fragility Analysis of 5 MW Wind Turbines Subjected to Aerodynamic and Seismic Loads Interaction

Yuan

Xie

et al. 2022

Energies

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In this paper, the influence of the number of ground motions on fragility analysis of 5 MW wind turbines under the excitation of aerodynamic and seismic loads is investigated to acquire the sufficient number of records for reasonable fragility estimation. Two scenarios, parked and normal operation, were simulated with the number of actual recorded ground motions ranging from 2 to 48. The fragility function parameters are estimated by utilizing the method of multiple stripe analysis (MSA), and the relationship between the number of ground motions and estimated parameters for each scenario is discussed. In addition, the influence of the number of ground motions on the range of estimated parameters with a 95% confidence interval is also discussed. The simulation results show that there are significant differences between the two scenarios in terms of fragility analysis for 5 MW wind turbines with the interaction of wind and seismic loads, and the lesser number of earthquakes is needed for a normal operation scenario compared to the parked scenario when obtaining the same accuracy fragility estimation. Furthermore, the appropriate number of ground motions to accurately estimate the fragility parameters of 5 MW wind turbines for the two scenarios is presented herein, which is almost unaffected by different wind spectra.

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Damages observed in locations of Oaxaca due to the Tehuantepec Mw8.2 earthquake, Mexico

Cited by 18 publications

References 5 publications

Development of fragility curves of land‐based wind turbines with tuned mass dampers under cyclone and seismic loading

Development of fragility curves of land‐based wind turbines with tuned mass dampers under cyclone and seismic loading

Scenario-Based Comprehensive Assessment for Community Resilience Adapted to Fire Following an Earthquake, Implementing the Analytic Network Process and Preference Ranking Organization Method for Enriched Evaluation II Techniques

Influence of the Number of Ground Motions on Fragility Analysis of 5 MW Wind Turbines Subjected to Aerodynamic and Seismic Loads Interaction

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