Maintenance interventions period of existing RC motorway viaducts located in moderate/high seismicity zones

Zucca, Marco; Crespi, Pietro; Stochino, Flavio; Puppio, Mario Lucio; Coni, Mauro

doi:10.1016/j.istruc.2022.11.135

Cited by 21 publications

(14 citation statements)

References 41 publications

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“…Based on the number of transverse and longitudinal beams, the bridges were divided into three types, as indicated in Table 4. Since the design strength of the material was not available, the minimum resistance class of C30/37 was assumed as the reference strength, based on the exposure class XC4, as specified in [17]. For simplicity, the scale constant γ was set equal to 1.…”

Section: The Case Of a Bridge Net In Sardiniamentioning

confidence: 99%

“…Materials degradation is a crucial issue for BMS [17] and should be taken into consideration in any approach. This element become critical especially in the case of extreme weather events producing an increase in environmental action [18] and threating the bridges, especially the ones of reduced spans [19] that should be tackled also at a network level [20].…”

Section: Original Article Abstractmentioning

confidence: 99%

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A proposal for low cost condition assessment method for existing RC bridges

Stochino,

Mistretta,

Sassu

et al. 2023

ce papers

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Aging infrastructures require huge budgets to preserve their functionality and the lack of effective maintenance leads to increasing deterioration and therefore higher repair costs. For these reasons, assessing the condition of infrastructures becomes mandatory, with particular attention to the ones still in service even when their life limit has been exceeded. In particular, this problem is really important in Countries, like Italy, in which there are several operating bridges at the end of their service life. In this framework, many companies responsible for the management of road networks have turned their interest towards Bridge Management Systems (BMS). This paper presents a fast and low‐cost method for condition rating of reinforced concrete bridges. The proposal is based on visual inspection and non‐destructive testing. A specific parameter is designed to take into account the mechanical degradation of materials and the damage location at the structural sub‐component level. Some benchmark case studies have been discussed in order to compare the proposed method with other approaches available in literature.

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Section: The Case Of a Bridge Net In Sardiniamentioning

confidence: 99%

Section: Original Article Abstractmentioning

confidence: 99%

A proposal for low cost condition assessment method for existing RC bridges

Stochino,

Mistretta,

Sassu

et al. 2023

ce papers

Self Cite

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“…However, earthquake disasters can be severe because they exhibit a wide range of characteristics, occur at a high frequency, and can cause considerable destruction. During earthquake disasters, urban bridge structures can be damaged or even destroyed, which has a significant impact on transportation systems and urban social functions [1][2][3]. Therefore, it is very important to prevent extreme damage to bridge structures during earthquake disasters and improve the postdisaster functional recovery capabilities of infrastructure systems.…”

Section: Introductionmentioning

confidence: 99%

Fragility Assessment of a Long-Unit Prestressed Concrete Composite Continuous Girder Bridge with Corrugated Steel Webs Subjected to Near-Fault Pulse-like Ground Motions Considering Spatial Variability Effects

Han,

Dong,

Wang

et al. 2024

Buildings

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Prestressed concrete composite girder bridges with corrugated steel webs (PCCGBCSWs) are extensively employed in bridge construction because of their low dead weight, fast construction, and high prestressing efficiency. Moreover, PCCGBCSWs will experience deformation and failure of the corrugated steel webs, including steel fatigue and fracture, during earthquakes. These changes will introduce safety hazards, which can be addressed via bridge disaster prevention and mitigation. Because near-fault pulse-like ground motions (NFPLGMs) have high peak accelerations, these motions can easily cause damage to a bridge. Therefore, in this study, a seismic fragility assessment is performed for long-unit PCCGBCSWs subjected to NFPLGMs considering spatial variability effects, and a sensitivity evaluation of the seismic fragility is conducted considering girder type, bearing type, ground motion type, and apparent wave velocity to offer a point of reference for seismic design. The results show that PCCGBCSWs are less vulnerable than concrete bridges. The shock absorption effect of the friction pendulum bearing is better than that of the viscous damper. The impact of NFPLGMs on bridges is greater than that of near-fault non-pulse-like ground motions (NFNPLMs) and far-fault ground motions (FFGMs). The seismic fragility under nonuniform excitation conditions is greater than that under uniform excitation conditions, showing an increasing trend with decreasing apparent wave velocity.

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“…This study demonstrated the importance of timely accounting for countermeasures in case of malfunctioning, even during the construction stage. In general, a significant number of bridge collapses occurred during their service life and may be attributed to a lack of maintenance [11] [12]. The collapse of Morandi's Polcevera viaduct probably falls into this category.…”

Section: Introductionmentioning

confidence: 99%

Toward a BIM‐based procedure for the evaluation of a risk prioritization class of bridge structures

Casto,

Perrone,

Nascimbene

et al. 2023

ce papers

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Building Information Modelling is receiving increasing attention as an emerging technology for enhancing the life‐cycle performance of facilities. The cooperation between all professionals involved in the construction chain allows to reproduce digital twins of the structures including information related to different disciplines, such as structural and architectural aspects. In this context, the use of Building Information Modelling, combined with an automatic tool to predict risk indices, could be particularly useful when dealing with existing bridges due to the significant structural deficiencies recently demonstrated by numerous bridge collapses worldwide. This paper explores the development of a BIM‐based procedure to bring greater value in the design, construction, maintenance, and inspection stages. The procedure is applied to existing bridges and it allows to estimate a structural risk prioritization class of bridges according to maintained activities, periodical inspections, structural detailing and modelling uncertainties. The automatic BIM‐based tool uses a workflow developed in Dynamo, and is able to automatically update the structural risk class and to provide warning if the structural safety index exceed defined thresholds.

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Maintenance interventions period of existing RC motorway viaducts located in moderate/high seismicity zones

Cited by 21 publications

References 41 publications

A proposal for low cost condition assessment method for existing RC bridges

A proposal for low cost condition assessment method for existing RC bridges

Fragility Assessment of a Long-Unit Prestressed Concrete Composite Continuous Girder Bridge with Corrugated Steel Webs Subjected to Near-Fault Pulse-like Ground Motions Considering Spatial Variability Effects

Toward a BIM‐based procedure for the evaluation of a risk prioritization class of bridge structures

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