Health assessment and self-powered corrosion monitoring system for deteriorated bridges

Le, Hoang Minh Ngo; Hashimoto, Keita; Ha, Tuan Minh; Kita, Shota; Fukada, Saiji; Ueno, Takahiro

doi:10.1007/s13349-023-00678-5

Cited by 4 publications

(2 citation statements)

References 33 publications

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“…However, no matter the theoretical equation or numerical simulation, there will be deviation in the calculation process, mainly because there are assumptions in the theoretical equation and simplification of boundary conditions in the numerical simulation. [43][44][45] It can be seen that even with an accurate load model, it is difficult to obtain structural vibration response through load-structure model.…”

Section: Introductionmentioning

confidence: 99%

“…Results show that the rigid main girder can decrease the buffeting displacements in lateral and torsional directions, while the vertical buffeting displacement significantly decreases with the increasing stiffness of middle towers. However, no matter the theoretical equation or numerical simulation, there will be deviation in the calculation process, mainly because there are assumptions in the theoretical equation and simplification of boundary conditions in the numerical simulation 43–45 . It can be seen that even with an accurate load model, it is difficult to obtain structural vibration response through load‐structure model.…”

Section: Introductionmentioning

confidence: 99%

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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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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

View full text Add to dashboard Cite

show abstract

Over 25-year monitoring of the Tsing Ma suspension bridge in Hong Kong

Zhang,

Lu,

Wang

et al. 2024

J Civil Struct Health Monit

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Bridges in service are subjected to environmental and load actions, but their status and conditions are typically unknown. Health monitoring systems have been installed on long-span bridges to monitor their loads and the associated responses in real time. Since 1997, the Tsing Ma suspension bridge in Hong Kong has been the world’s first of the type equipped with a long-term health monitoring system. For the first time, this study reports the first-hand field monitoring data of the bridge from 1997 to 2022. The 26-year data provide an invaluable and rare opportunity to examine the long-term characteristics of the loads, bridge responses, and their relationships, thereby enabling the assessment of the bridge’s load evolution and structural condition over time. Results show that traffic loads have remained stable after 2007, highway vehicles kept increasing until the COVID-19 pandemic in 2020, the annual maximum deck temperature continued to increase at a rate of 0.51 °C/decade, typhoon durations increased by 2.5 h/year, and monsoon speeds decreased and became dispersed and variable. For the bridge responses, deck displacement is governed by the varying temperature. Natural frequencies in the past 26 years were almost unchanged. The overall condition of the bridge is very satisfactory. Current status and recent update of the health monitoring system are also reported. Lastly, prospects of bridge health monitoring are discussed. This study is the first to report the over one-quarter century status of a structural health monitoring system and the behavior of a long-span suspension bridge. This research provides a benchmark for many other bridge monitoring systems worldwide.

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Time-variant reliability analysis of corroded suspender of suspension bridge based on data-driven

Qiu,

Zhang,

et al. 2024

Engineering Structures

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Health assessment and self-powered corrosion monitoring system for deteriorated bridges

Cited by 4 publications

References 33 publications

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

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

Over 25-year monitoring of the Tsing Ma suspension bridge in Hong Kong

Time-variant reliability analysis of corroded suspender of suspension bridge based on data-driven

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