Probabilistic assessment of structures considering the effect of cumulative damage under seismic sequences

Tolentino, Dante; Flores, Ricardo B.; Alamilla, Jorge L.

doi:10.1007/s10518-017-0276-6

Cited by 11 publications

(5 citation statements)

References 17 publications

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“…The ultimate resistance condition is associated to ℎ = 23 m [41] and a value of 𝜆 equal to 0.124 m at ∆𝑡 = 0 years, representing an exceedance rate equal to 0.0248 with a return period of being exceeded of 40.32 years. Numerical demand exceedance rates can be fitted by the following expression [52]:…”

Section: Demand Exceedance Ratesmentioning

confidence: 99%

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Cost–Benefit Assessment of Offshore Structures Considering Structural Deterioration

Tolentino

2023

JMSE

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Offshore facilities are essential infrastructure systems for many nations because their partial or total interruption causes diverse consequences in the economic, political, environmental, and social sectors. With the aim to preserve such structures at acceptable reliability levels, an approach is proposed to calculate the optimal instant of time in which inspection and maintenance works can be performed. The optimal time instant is estimated following the cost benefit criterion (CB) considering the cost of inspection, repair and failure. The inspection cost is given by an inspection quality, while fatigue crack size at different critical joints is calculated to estimate repair costs. In this paper, the concept of demand exceedance rates is introduced to evaluate the failure cost. Uncertainties related to both storm and operational waves are considered. The optimal time instant is associated with the lowest cost of inspection, repair and failure. For this purpose, the approach is exemplified in an offshore jacket structure situated in the Gulf of Mexico. The optimal instant of time corresponds to 6 years after the offshore jacket installation. If maintenance actions are implemented every six years during the lifespan of the system, an economic reduction of 58% is achieved, compared to the case in which no inspection and maintenance works are performed over time. The approach helps decision-makers ensure the best use of economic resources.

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Section: Demand Exceedance Ratesmentioning

confidence: 99%

“…Figure 11 shows only one realization. Numerical demand exceedance rates can be fitted by the following expression [52]:…”

Section: Demand Exceedance Ratesmentioning

confidence: 99%

Cost–Benefit Assessment of Offshore Structures Considering Structural Deterioration

Tolentino

2023

JMSE

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“…Chiu (2014) considers the cumulative damage in a reliability-based service life using energy concepts. Likewise, Tolentino et al (2018) and Tenderan et al (2019) consider the cumulative damage based on displacements and drifts due to sequences of seismic events. However, Raghunandan et al (2015) and Jalayer and Ebrahimian (2017) studied the cumulative damage but based only on a main event—aftershock sequence.…”

Section: Introductionmentioning

confidence: 99%

Long duration and frequent, intense earthquakes: Lessons learned from the 19 September 2017 earthquake for Mexico City’s resilience

Quinde¹,

Reinoso²

2020

Earthquake Spectra

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The accumulation of plastic deformations during an intense earthquake may cause structural failures at deformations significantly smaller than those that can be developed under monotonic load. However, there is evidence that, under certain circumstances, the response of a single parameter may not be a good indicator of structural damage. Likewise, most of the seismic regulations, including the Mexican standards, establish their criteria considering the occurrence of strong earthquakes with a very little probability of occurrence, but do not consider if intense earthquake affects the building frequently and, therefore, cumulative damage due to the occurrence of several earthquakes during the life span of the structure is not taken into account explicitly. This cumulative damage is especially important in places like Mexico City, where intense and long-duration earthquakes occur every 10–20 years. To study the issues that Mexico City must face to increase its seismic resilience, in this article, we present an analysis of the dissipated plastic energy demands in Mexico City during the earthquake of 19 September 2017, and the cumulative damage due to recent intense earthquakes that affect the city.

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“…Figura 2.1. Representación del daño evolutivo (adaptado de Tolentino et al, 2018) tiempo se puede cuantificar por medio de un índice de daño, 𝐼𝑑 i (𝑡, 𝑦), que relaciona distorsiones en el tiempo como sigue (Tolentino et al, 2018):…”

Section: Diseñounclassified

“…Para el caso de los amortiguadores, se demuestra la viabilidad de estos como una medida de mitigación, reduciendo estos la demanda de aceleración y desplazamiento. Tolentino et al (2018) describen un enfoque general que considera el daño acumulado que una estructura experimenta ante la acción de eventos símicos a lo largo de un intervalo de tiempo, considerando las incertidumbres asociadas a la demanda y capacidad estructural; el daño acumulado se cuantifica por medio de un índice de daño que relaciona la distorsión demandada, la de fluencia y la de falla; estas bajo un instante de tiempo e intensidad dados. Finalmente, como resultado se presenta un índice de confiabilidad estructural en el tiempo; aunque dicho enfoque es general, en dicha investigación se limitó a un puente de concreto reforzado.…”

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Confiabilidad de edificios con contravientos restringidos al pandeo expuestos a secuencias sísmicas en el tiempo

Lucas¹

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En el presente estudio se propone un enfoque para evaluar la confiabilidad estructural en edificios expuestos a secuencias sísmicas en el tiempo. Dicho enfoque se ilustra en tres edificios de concreto reforzado equipados con contravientos restringidos al pandeo (CRPs) de 10, 15 y 20 niveles, ubicados en el suelo blando de la Ciudad de México. Considerando la variación de la capacidad estructural y la demanda sísmica para una intensidad dada, el daño estructural se cuantifica en términos de un índice de daño que relaciona la distorsión demandada y de falla ante secuencias sísmicas en el tiempo; con base en este, se obtienen funciones de distribución de no daño y de falla. Finalmente, se obtiene el índice de confiabilidad 𝛽(𝑡) en el tiempo.

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Probabilistic assessment of structures considering the effect of cumulative damage under seismic sequences

Cited by 11 publications

References 17 publications

Cost–Benefit Assessment of Offshore Structures Considering Structural Deterioration

Cost–Benefit Assessment of Offshore Structures Considering Structural Deterioration

Long duration and frequent, intense earthquakes: Lessons learned from the 19 September 2017 earthquake for Mexico City’s resilience

Confiabilidad de edificios con contravientos restringidos al pandeo expuestos a secuencias sísmicas en el tiempo

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