Health monitoring system for Dafosi cable-stayed bridge

Zhu, Yudan; Fu, Yumei; Chen, Weimin; Huang, Shiyun; Bennett, Kim D.

doi:10.1117/12.482763

Cited by 7 publications

(4 citation statements)

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“…One of the most common methods for SHM of long-span bridges is an ambient vibration-based approach (VBSHM) [8][9][10][11][12][13][14][15]. This method provides an overall characterization through tracking the modal parameters of the structure, and while it has enjoyed significant attention over the last several decades, it has many widely recognized drawbacks [16].…”

Section: Introductionmentioning

confidence: 99%

Temperature-based structural health monitoring baseline for long-span bridges

Yarnold

Moon

2015

Engineering Structures

108

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Section: Introductionmentioning

confidence: 99%

Temperature-based structural health monitoring baseline for long-span bridges

Yarnold

Moon

2015

Engineering Structures

108

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“…Moreover, the cable stress decreased after eliminating the free deformation of the cable. Zhu et al (2003) investigated the strain‒temperature correlation of a cable-stayed bridge to filter thermal strain and identify traffic-induced loading effects. As the aforementioned field monitoring approaches are all based on limited measurements, they cannot capture the accurate relation between the temperature and the responses, with even opposite observations being reported.…”

Section: Introductionmentioning

confidence: 99%

Temperature behavior of cable-stayed bridges. Part II — temperature actions by using unified analysis

Shan

Qiang²,

et al. 2023

Advances in Structural Engineering

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The temperature action of long-span cable-stayed bridges is complicated because of the high indeterminacy of their structure. Previous studies on the temperature behavior of bridges were either limited by finite sensors, failing to capture the accurate relation between the temperature field and temperature-induced responses, or constrained to a “divide-and-conquer” strategy, requiring considerable manual intervention and regarded as computationally inefficient. This study develops a unified approach to the investigation of thermal behaviors of cable-stayed bridges by integrating the heat-transfer analysis and structural analysis based on the same refined global 3D finite element model. The companion paper (Part I) investigates the temperature distribution, while this paper (Part II) focuses on temperature-induced responses. The temperature distribution data is automatically converted to thermal loads, and thermal elements are changed to structural elements to calculate the temperature-induced responses of the bridge. Results show that the effect of the temperature variation of cables is nonnegligible and should be taken into account during the structural analysis. The longitudinal displacement of the girder and the longitudinal displacement of the tower top are mainly influenced by the average girder temperature, the mid-span deflection and the cable stress are dominated by the cable temperature and average girder temperature, and the stress of the girder is controlled by the vertical temperature difference. The ratio of the thermal stress to the dead load stress of the girder can reach 96%. The calculated displacement and stress of the bridge agree well with the corresponding measurements, consequently verifying the effectiveness of the proposed unified approach to calculating temperature-induced responses.

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“…Structural health monitoring systems in some developed countries started earlier, such as the Sunshine Viaduct in the United States, the Tampico Cable-stayed Bridge in Mexico, the Akashi Strait Bridge in Japan, and the Great Belt East Suspension Bridge in Denmark [2]. Although China's bridge health monitoring technology started late, with the unremitting efforts of Chinese scholars in theoretical basis and application, China has also tried and gradually skilled in installing bridge structural health monitoring systems, such as Tsing Ma Bridge and Hong Kong Dafo Yangtze River Bridge [3][4]. Bridge structural health monitoring systems are becoming more and more popular and practical.…”

Section: Introductionmentioning

confidence: 99%

Research on structural health monitoring methods for bridge structures

Zhang

2023

ACE

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With the development of science and technology, China is building more and more Bridges. The inspection and maintenance of bridge during operation plays an important role in the safety of bridge. Firstly, the research background and significance of bridge structure health inspection are introduced, and the research status and progress of health inspection are analyzed. Then, several commonly used monitoring methods are listed. Based on the comprehensive study of the bridge health monitoring system, the main conclusions are as follows: the bridge health monitoring system is realized through the coordination of several subsystems, including: bridge working environment monitoring, bridge structure overall performance monitoring and bridge structure local performance monitoring. The bridge structural health monitoring system is mainly used in bridge damage identification and bridge safety warning. The bridge structure health monitoring system conforms to the development trend of high technology and will become an indispensable part of the bridge operation in the future.

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Health monitoring system for Dafosi cable-stayed bridge

Cited by 7 publications

References 0 publications

Temperature-based structural health monitoring baseline for long-span bridges

Temperature-based structural health monitoring baseline for long-span bridges

Temperature behavior of cable-stayed bridges. Part II — temperature actions by using unified analysis

Research on structural health monitoring methods for bridge structures

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