Monitoring-Informed Life-Cycle Cost Analysis of Deteriorating RC Bridges under Repeated Earthquake Loading

Torti, Michela; Sacconi, Stefano; Venanzi, Ilaria; Ubertini, Filippo

doi:10.1061/(asce)st.1943-541x.0003449

Cited by 8 publications

(6 citation statements)

References 30 publications

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“…Torti et al [125] proposed a methodology to assess the life-cycle economic savings gained by using a structural health monitoring system with corrosion sensors for RC bridge piers subjected to earthquake loading. A similar approach was presented by Chiu, Noguchi, and Kanematsu [126], focused on the probabilistic assessment method of service life and life-cycle maintenance strategies for buildings in corrosive environments with high seismic hazards considering the impact of repair and retrofit.…”

Section: Life-cycle Cost Assessmentmentioning

confidence: 99%

Degradation Models and Maintenance Strategies for Reinforced Concrete Structures in Coastal Environments under Climate Change: A Review

Rincon,

Moscoso,

Hamami

et al. 2024

Buildings

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Modern engineering faces challenges in ensuring technical standards for service, durability, and sustainability. Political, administrative, and budgetary factors, coupled with climate change, pose tasks to structural integrity, affecting industries and economies. Marine infrastructures represent a strategic asset of a country as they handle a large part of the economic exchanges. This article analyzes five essential factors that play a fundamental role in the performance analysis of coastal structures: chloride-induced corrosion, degradation models, maintenance strategies, monitoring, and climate change. We start with reinforcement corrosion, which is considered as the main cause of distress, particularly in coastal zones, for the long-term behavior of structures. Additional pressure from the influences of climate change is becoming evident and extreme, leading to a reduction in capacity. To guarantee the lifespan of infrastructures, degradation models contribute by estimating the long-term performance of the asset as a strategic piece to the development of effective maintenance solutions. Artificial Neural Networks (ANNs) have gained recent prominence in this field due to their ability to learn intricate patterns from historical data, making them valuable instruments for predicting structural deterioration. Additionally, quantifying the condition of the structure from monitoring data plays a crucial part in providing information on the current situation of the structure. Finally, this review summarizes the challenges associated with the maintenance of aging marine structures considering aspects such as corrosion, monitoring, and the future challenges this area will face due to climate change.

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Section: Life-cycle Cost Assessmentmentioning

confidence: 99%

Degradation Models and Maintenance Strategies for Reinforced Concrete Structures in Coastal Environments under Climate Change: A Review

Rincon,

Moscoso,

Hamami

et al. 2024

Buildings

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“…In recent years, a large number of studies have been carried out to analyze the seismic performance of structures subjected to mainaftershock sequences Torti et al, 2022;Tauheed and Alam, 2023). Wu and Ou (1993) proposed a method for determining the damage to reinforced concrete (RC) structures from the action of a main-aftershock and established a multi-layer RC structural model to conduct elastic-plastic timehistory analyses.…”

Section: Open Access Edited Bymentioning

confidence: 99%

Reliability analysis of an inter-story isolated structure under a main-aftershock sequence based on the Laplace asymptotic method

Yang

Wang

et al. 2023

Front. Earth Sci.

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After a strong mainshock, subsequent ground motion is the result of a sequence of multiple aftershocks, and the damage to a structure under these conditions is more severe than from a single earthquake. Most seismic studies are based on a single earthquake event. To explore the influence of a main-aftershock sequence on an isolated inter-story structure, we constructed a three-dimensional finite-element model of such a structure and subjected it to repeated main-aftershock sequences. The Laplace asymptotic method of second-order second-moment was used to calculate the reliability of the structure under the action of a single mainshock and after a main-aftershock sequence at different seismic levels. The effects of the number of aftershocks, the location of the isolation layer, and the stiffness of the isolation bearing in the structure were analyzed. The results showed that aftershocks increased the failure probability of each sub-structural part of the inter-story isolated structure. The failure probability of the lower structure had the greatest influence, which was about 3.89 times that for the mainshock alone. The probability of failure from multiple vs single aftershocks was similar, but the magnitude of the aftershock plays a major role in failure. The number of aftershocks reduced the overall reliability of an inter-story isolation structure. In the case of different isolation layer positions, the placement of the isolation layer at the top of the seventh story under an extremely rare earthquake level resulted in a reduction of 6.01%. With isolation bearings of different stiffness, the largest decrease was 7.88% when the stiffness was 50%.

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“…1,2 Other NDE methods relying on the electrical, magnetic, thermal, and acoustic properties of construction materials can be used, for instance, to establish the internal conditions of Reinforced Concrete (RC) structural elements, the positioning and propensity to corrosion of the reinforcing bars, the current conditions of the prestressing system, and the presence of fatigue cracks and welding discontinuities in steel members. [3][4][5][6] Because of their faithful insight into the in-service structural conditions of bridges and viaducts, the outcomes of NDE are often considered in risk assessment procedures to enhance the global knowledge of the structures under examination and to collect detailed information about specific parameters involved in the assessment process. As an example, according to the most recent Standards/Guidelines for bridge risk assessment, 7,8 the defects of bridges, obtained through visual inspections and other NDE, strongly influence the vulnerability of the assets and, therefore, their risk classification.…”

Section: Introductionmentioning

confidence: 99%

A new methodology to prioritize non-destructive evaluation based on risk conditions and costs assessment in the context of limited information

Meoni

García‐Macías

Venanzi

et al. 2023

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2023

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Non-Destructive Evaluation (NDE) methods allow the acquisition of a wide range of information related to the structural performance of bridges and viaducts. Consequently, the outcomes from NDE inspections are often considered in risk assessment procedures to collect detailed information about specific parameters involved in the assessment process. As an example, the defectiveness of bridges and viaducts, usually determined after a thorough visual inspection, commonly plays a key role in assessing the vulnerability of the assets and, therefore, in determining their structural risk conditions. In common practice, the planning of NDE inspections is usually borne by the authority responsible for the bridge inventory according to the prescriptions of a selected Standard and the outcomes from past risk assessments. Due to their recurrence in time and the large number of assets they commonly involve, NDE inspections represent costly operations for management authorities, both in terms of time and economic resources. Considering this, their planning should account for the expenses for their execution in addition to the outcomes from the risk classification of the assets. This paper presents a new NDE bridge inspection prioritization method that considers both risk and cost evaluations to establish inspection priorities within bridge inventories. The information gain criterion is adopted to refine the outcomes from risk assessment and prioritization process. Contemporary, the implementation of the methodology in a GIS framework, together with the use of spatial interpolation methods for data analysis, ensure high interoperability and the rendering of macro-level informative risk maps and inspection plans.

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Monitoring-Informed Life-Cycle Cost Analysis of Deteriorating RC Bridges under Repeated Earthquake Loading

Cited by 8 publications

References 30 publications

Degradation Models and Maintenance Strategies for Reinforced Concrete Structures in Coastal Environments under Climate Change: A Review

Degradation Models and Maintenance Strategies for Reinforced Concrete Structures in Coastal Environments under Climate Change: A Review

Reliability analysis of an inter-story isolated structure under a main-aftershock sequence based on the Laplace asymptotic method

A new methodology to prioritize non-destructive evaluation based on risk conditions and costs assessment in the context of limited information

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