Quantifying the value of SHM information for bridges under flood-induced scour

Giordano, Pier Francesco; Prendergast, Luke J.; Limongelli, Maria Pina

doi:10.1080/15732479.2022.2048030

Cited by 12 publications

(5 citation statements)

References 43 publications

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“…It is therefore essential to monitor the structures affected by that type of damage, preventing the scour from reaching its critical depth. This can be achieved via SHM (structural health monitoring), as innovations on the subject are increasingly applied to scour monitoring as well as during emergency management [60][61][62].…”

Section: Bridge Databasementioning

confidence: 99%

Fragility Analysis Based on Damaged Bridges during the 2021 Flood in Germany

Pucci,

Eickmeier,

Sousa

et al. 2023

Applied Sciences

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Floods trigger the majority of expenses caused by natural disasters and are also responsible for more than half of bridge collapses. In this study, empirical fragility curves were generated by referring to actual failures that occurred in the 2021 flood in Germany. To achieve this, a calibrated hydraulic model of the event was used. Data were collected through surveys, damage reports and condition ratings from bridge owners. The database comprises 250 bridges. The analysis revealed recurrent failure mechanisms belonging to two main categories: those induced by scour and those caused by hydraulic forcing. The severity of the damage was primarily dependent on the bridge typology and, subsequently, on the deck’s weight. The analysis allowed us to draw conclusions regarding the robustness of certain bridge typologies compared to others for a given failure mechanism. The likelihood of occurrence of the triggering mechanism was also highlighted as a factor to consider alongside the damage probability. This study sheds light on existing vulnerabilities of bridges to river floods, discussing specific areas in which literature data are contradictory. The paper also strengthens the call for a shift towards a probabilistic approach for estimating hydraulic force in bridge design and assessment.

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Section: Bridge Databasementioning

confidence: 99%

Fragility Analysis Based on Damaged Bridges during the 2021 Flood in Germany

Pucci,

Eickmeier,

Sousa

et al. 2023

Applied Sciences

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“…With the development of social economy and the people's need for a better life, more and more Bridges have been built to avoid traffic congestion and improve the people's travel efficiency. [1][2][3][4] It can be seen that Bridges are very important in the social operation system. [5][6][7] At the same time, the safety and durability level of the bridge itself is also directly related to the operation and development of the society.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on mapping relationship between environmental load and vibration response of bridge structure based on structural health monitoring data

Qiao,

Ding,

Zhou

et al. 2023

Engineering Reports

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With the increasing lifespan of bridges, various forms of deterioration will inevitably occur. The bridge health monitoring system enables direct monitoring of the loads (such as wind, temperature, and vehicles) experienced by the bridge during operation, as well as the corresponding vibration response of the bridge structure (including main beam deformation, tower top displacement, cable acceleration, etc.). These data provide valuable insights into the safety and durability of the bridge during its operational lifetime. However, the challenge lies in extracting meaningful information from the vast amount of collected data. This article focuses on the Fuyu Bridge as a research case and analyzes the variations in environmental factors, such as temperature, humidity, wind load, and structural vibration responses (main beam and cable), obtained from the Fuyu Bridge's structural health monitoring system. It also conducts a structural safety assessment during the operational period of the bridge. Furthermore, the research explores the relationship between environmental factors, load effects, and structural response to establish a foundation for future structural safety assessments of the Fuyu Bridge during its operational period. For instance, changes in environmental factors or load effects can be used to predict structural responses. Additionally, this study provides access to the structural health monitoring data of the Fuyu Bridge, facilitating data‐driven research for other scholars in the field.

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“…Structural Health Monitoring (SHM) has repeatedly demonstrated its effectiveness in providing accurate and in-time information on the condition state of bridges, improving the managers' capability to optimise Maintenance, Repair, and Rehabilitation (MR&R) strategies and resource allocation [1,2]. Contact-type sensors (e.g., strain gauges, accelerometers, load cells) permanently installed on bridges continuously acquire real-time, accurate information, increasing the knowledge of infrastructure operators on the bridges' response to traffic and environmental loads [3,4].…”

Section: Introductionmentioning

confidence: 99%

Interpretation of Bridge Health Monitoring Data from Satellite InSAR Technology

Tonelli,

Caspani,

Valentini

et al. 2023

Remote Sensing

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This paper presents a study on applying satellite Interferometric Synthetic Aperture Radar (InSAR) technology for the remote monitoring of road bridges and interpreting the results from a structural standpoint. The motivation behind this study arises from the widespread deterioration observed in many road bridges worldwide, leading to the need for large-scale, economic, and effective structural health monitoring (SHM) techniques. While traditional contact-type sensors have cost sustainability limitations, remote sensing techniques, including satellite-based InSAR, offer interesting alternative solutions. The objective of this study is three-fold: (i) to process InSAR data specifically for road bridges in operational conditions through the Multi-Temporal InSAR technique and extract displacement time series of reflective targets on their decks; (ii) to interpret the observed millimetric bridge displacements to verify the consistency with expected response to environmental loads and the possibility to detect unexpected behaviours; and (iii) to investigate the correlation between bridge displacements and environmental loads as temperature and river water flow variations. The study focuses on the multi-span prestressed concrete A22 Po River Bridge in Italy, utilising a dataset of X-Band HIMAGE mode Stripmap images acquired over eight years by the satellite constellation COSMO-SkyMed. The study demonstrates the effectiveness of InSAR-based SHM in detecting temperature-induced displacements and identifying different bridge spans simply by studying the sign of the correlation between displacements and temperature variation. It also reveals an unexpected behaviour in a portion of the bridge retrofitted to prevent scour issues a few years before the dataset start date. Furthermore, the correlation between pier displacements and river level variations underscores the importance of considering environmental factors and the geotechnical characteristics of the foundation soils in bridge monitoring. The results obtained from this study are significant with a view to using this satellite InSAR-based monitoring for early detection of anomalous bridge behaviour on a large scale.

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Quantifying the value of SHM information for bridges under flood-induced scour

Cited by 12 publications

References 43 publications

Fragility Analysis Based on Damaged Bridges during the 2021 Flood in Germany

Fragility Analysis Based on Damaged Bridges during the 2021 Flood in Germany

Research on mapping relationship between environmental load and vibration response of bridge structure based on structural health monitoring data

Interpretation of Bridge Health Monitoring Data from Satellite InSAR Technology

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