Structural rehabilitation of half-joints in RC bridges: a state-of-the-art review

Santarsiero, Giuseppe; Picciano, Valentina; Masi, Angelo

doi:10.1080/15732479.2023.2200759

Cited by 9 publications

(4 citation statements)

References 66 publications

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“…The most applied rehabilitation methods and technology in seismic zones are finite element strengthening [86], reinforced concrete repair and strengthening [87], the application of selfrepairing nanoconcrete [88], performance-based rehabilitation for structural and non-structural members using momentresisting steel frames, steel cladding [89] and the use of Fibre Reinforced Polymers (FRP) [90].…”

Section: Discussion Of Resultsmentioning

confidence: 99%

Proposal for the Rehabilitation of Houseshold in Seismic Vulnerability Zones

Morante-Carballo,

Santos-Baquerizo,

Pinto-Ponce

et al. 2024

IJSSE

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Section: Discussion Of Resultsmentioning

confidence: 99%

Proposal for the Rehabilitation of Houseshold in Seismic Vulnerability Zones

Morante-Carballo,

Santos-Baquerizo,

Pinto-Ponce

et al. 2024

IJSSE

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“…Reinforced concrete slabs in bridges are considered secondary elements, and most of the research on retrofitting solution is related to primary elements like girders and piers, e.g., [32,33]. In this case, the focus is the slab strengthening, which can be performed through several techniques based on increasing the amount of reinforcement on the top part of the slab section across the cantilever part [34].…”

Section: Slab Retrofit Approachesmentioning

confidence: 99%

Retrofitting of Bridge Slabs for Safety Railing Refurbishment in Italy: A State-of-the-Art Review

Santarsiero

2023

Applied Sciences

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The recent accident of Mestre (northern Italy), which caused 21 fatalities due to a bus falling from a bridge, strongly highlighted the safety problem related to the presence of old railings along Italian roads. Bridge railings, also known as guardrails or parapets, serve the crucial function of preventing vehicles from accidentally driving off the edge of a bridge. Performance requirements of safety railings have been recently increased due to laws and technical standards enforced in Italy and Europe. However, many bridges along important roads, such as motorways and highways, are currently equipped with outdated safety railings since they were built before these regulations came into force. Therefore, many people are daily exposed to the risk of heavy accidents due to railing failures as well as vehicles and people eventually present below such structures. This paper aims to outline the technical problems and solutions in bridge refurbishment interventions devoted to increasing traffic safety as, for example, the installation of code-conforming railings, which often require the structural retrofit of bridge elements supporting the railing. To this end, several technical solutions are described and critically compared, and, finally, an economic analysis is reported to highlight the slab retrofit influence on the total intervention cost.

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“…During the last few years, the attention paid to safety assessments of existing reinforced concrete (RC) viaducts has grown significantly, especially due to several collapses that involved this kind of structure [1][2][3][4][5]. One of the major causes that affects the loadbearing capacity of existing RC motorway viaducts, both in serviceability conditions and under extreme action, is the corrosion of the piers' steel reinforcement, which can be due to carbonation or the presence of chlorides [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Climate Change Impact on Corrosion of Reinforced Concrete Bridges and Their Seismic Performance

Zucca,

Landi,

Puppio

et al. 2023

Applied Sciences

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As a consequence of climate change impact, a significant variation in terms of temperature, atmospheric humidity, and carbon dioxide concentration levels is happening. This condition leads to several negative effects on the safety and the life cycle of existing concrete structures, such as the increase in the rate of material degradation, due to corrosion phenomena. In fact, the presence of carbonation and corrosion phenomena significantly influence the load-bearing capacity of existing reinforced concrete (RC) structures, under both static and dynamic loads. Among the wide range of existing RC constructions, bridges stand out for their importance. Furthermore, as structures directly exposed to the weather effects, they are more susceptible to these phenomena. In this paper, the influence of corrosion on existing RC motorway viaducts’ seismic behavior, considering the impact of climate change, is investigated, by means of an efficient procedure based on the implementation of 3D simplified finite element models and the use of analytical relations to obtain the amount of reduction in the steel reinforcement area as a function of the age of the bridge and of the different corrosion scenarios analyzed. Several scenarios for the expected variations in CO2 concentrations, temperature, and relative humidity are evaluated, considering that most of the viaducts present in the Italian motorway network were built between the 1960s and the 1970s. The results obtained using the projection of climate change impacts are compared with those calculated considering the corrosion scenarios resulting from the DuraCrete research project, to understand if the evolution of climate change leads to worse scenarios than those previously assessed.

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Structural rehabilitation of half-joints in RC bridges: a state-of-the-art review

Cited by 9 publications

References 66 publications

Proposal for the Rehabilitation of Houseshold in Seismic Vulnerability Zones

Proposal for the Rehabilitation of Houseshold in Seismic Vulnerability Zones

Retrofitting of Bridge Slabs for Safety Railing Refurbishment in Italy: A State-of-the-Art Review

Climate Change Impact on Corrosion of Reinforced Concrete Bridges and Their Seismic Performance

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