Consideration of Climate Change Effects on the Seismic Life-Cycle Cost Analysis of Deteriorating Highway Bridges

Mortagi, Mohamed; Ghosh, Jayadipta

doi:10.1061/(asce)be.1943-5592.0001815

Cited by 25 publications

(9 citation statements)

References 61 publications

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“…Wu et al (2020) observed that developments in data-driven bridge O&M are generally heading toward five areas of application [1]: (1) investigation of bridge deterioration factors and the development of bridge structural health models, (2) estimation of failure probability or load capacity, (3) evaluation of bridge life expectancy, (4) generation of solutions for resolving issues related to bridge or network-level O&M and selection of appropriate SHM and NDT tools, and (5) assessment or prediction of bridge condition. In one of the most recent studies, Mortagi and Ghosh (2022) suggested factoring in the potential adverse effects of climate change when evaluating the seismic performance of aging highway bridge structures [12]. Sony et al (2022) proposed a windowed one-dimensional convolutional neural network model to detect structural problems in bridges using the vibration responses collected by SHM systems [13].…”

Section: Introductionmentioning

confidence: 99%

A Big Data Approach for Investigating Bridge Deterioration and Maintenance Strategies in Taiwan

2023

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Due to the dwindling maintenance budget and lack of qualified bridge inspectors, bridge-management agencies in Taiwan need to develop cost-effective maintenance and inspection strategies to preserve the safety and functionality of their aging, natural disaster-prone bridges. To inform the development of such a strategy, this study examined the big data stored in the Taiwan Bridge Management System (TBMS) using the knowledge discovery in databases (KDD) process. Cluster and association algorithms were applied to the inventory and five-year inspection data of 2849 bridges to determine the bridge structural configurations and components that are prone to deterioration. Bridge maintenance agencies can use the results presented to reevaluate their current maintenance and inspection strategies and concentrate their limited resources on bridges and components most prone to deterioration.

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Section: Introductionmentioning

confidence: 99%

A Big Data Approach for Investigating Bridge Deterioration and Maintenance Strategies in Taiwan

2023

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“…Existing bridges that have made Italian engineering internationally famous are currently affected by signals of degradation or damage, generally referred to in the following as "defects". They may be related to different reasons, such as an increase in traffic loads, concrete degradation, lack of maintenance, sudden events (such as earthquakes or hurricanes [6,7]), and climate change [8,9]. Also, the environmental exposure conditions strongly affect infrastructure durability.…”

Section: Introductionmentioning

confidence: 99%

“…The high vulnerability and strong degradation level of existing bridges worldwide have been discussed by several recent studies [6,8,9,13]; the presence of defects on the main elements of bridges, such as bearings, piers, and abutments, have been identified as critical for their performance [9]. The degradation control is crucial for optimizing maintenance strategies from an economic and management perspective.…”

Section: Introductionmentioning

confidence: 99%

Impact of the Structural Defects on Risk Assessment of Concrete Bridges According to the Italian Guidelines 2020

Miano,

Mele,

Della Ragione

et al. 2023

Infrastructures

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The Italian infrastructure network of roads and bridges is one of the most complex in the world due to the territory orography. Italy is strongly interested in seismic and hydrogeological hazards, and, in addition, degradation and obsolescence phenomena are common in infrastructures nowadays approaching the end of their nominal life. Furthermore, these infrastructures are subjected to continuous traffic load increase over time. In 2020, the Italian Ministry of Infrastructure and Transport (MIT) published the guidelines for risk classification and management, safety assessment, and monitoring of existing bridges (LG2020) as an attempt to unify the multiple procedures of inspection, monitoring, and maintenance of infrastructures. The multilevel approach proposed in the Italian guidelines for the management of the complex existing system of bridges is herein discussed and investigated, focusing on an operational methodology to evaluate the impact of structural defects on the risk assessment. This study aims to develop an operational methodology for the application of the procedure generically depicted in the LG2020 for the attribution of the level of defectiveness based on the outcomes of the periodical inspections. In particular, such a methodology is applied to two of the most widespread bridge structural typologies in the Mediterranean area: reinforced concrete (RC) and prestressed RC (PRC) bridges. The defects’ extent and level to structural members are associated with the proposed procedure for different bridge risk ratings. The work presents a useful tool to proceed from the outcomes of the inspections to the assignment of a level of defectiveness for the bridge, which enters into the risk assessment. This is to drive decision-makers in the definition of future actions and interventions, such as the detailed assessment of safety level and relevant strengthening interventions or installation of continuous monitoring systems.

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“…In the recent literature, Cui et al 10 proposed an improved steel bar corrosion model that considers pitting corrosion and a change of the after‐cracking corrosion rate, and then the proposed model was used to assess the time‐dependent seismic fragility of RC bridges. In addition, based on the fragility analysis method, Vishwanath and Banerjee, 11 Mortagi and Ghosh, 12 and Pang et al 13 estimated the life‐cycle seismic resilience and economic loss of deteriorating bridges. The results demonstrated the importance of seismic fragility assessment in the life‐cycle context.…”

Section: Introductionmentioning

confidence: 99%

Life‐cycle seismic fragility of a cable‐stayed bridge considering chloride‐induced corrosion

Wei

et al. 2022

Earthquake Engineering and Resilience

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The coastal or sea‐crossing bridges located in seismic regions are experiencing long‐term chloride‐induced corrosion in their life cycles and have a high risk of suffering from strong earthquakes. Thus, the fragilities of these bridges must be properly evaluated under the multiple hazards of corrosion and earthquake. Conventional fragility assessment requires expensive computational efforts despite extensive applications in previous research. To this end, this paper proposes a life‐cycle fragility analysis framework based on the endurance time method to investigate the deterioration impact on the seismic fragility of bridges. An example sea‐crossing cable‐stayed bridge is utilized as a case study and modeled by OpenSees considering different service years. The life‐cycle fragility curves of the example bridge are generated using the artificial endurance time series. Fragility analysis results show that the proposed method is capable of assessing the life‐cycle seismic fragility of the bridge with high efficiency. The bearing shows a higher damage probability than the pylon and pier. As the service time increases, the structural deterioration has a marginal impact on the system fragility of the bridge, while the component fragility varies across different components. The structural deterioration results in beneficial effects on the pylon and the bearing at the pylon but exerts adverse effects on the pier and the bearing at the pier.

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Consideration of Climate Change Effects on the Seismic Life-Cycle Cost Analysis of Deteriorating Highway Bridges

Cited by 25 publications

References 61 publications

A Big Data Approach for Investigating Bridge Deterioration and Maintenance Strategies in Taiwan

A Big Data Approach for Investigating Bridge Deterioration and Maintenance Strategies in Taiwan

Impact of the Structural Defects on Risk Assessment of Concrete Bridges According to the Italian Guidelines 2020

Life‐cycle seismic fragility of a cable‐stayed bridge considering chloride‐induced corrosion

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