Dynamic monitoring of an offshore jacket platform based on RTK-GNSS measurement by CF-CEEMDAN method

Chen, Wen; Xiong, Chunbao; Yu, Lie; Lian, Sida; Zhuang, Ye

doi:10.1016/j.apor.2021.102844

Cited by 13 publications

(5 citation statements)

References 31 publications

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“…This paper mainly introduces the widely used methods in time domain modal parameter identification methods, such as ITD (Ibrahim Time Domain) method, Eigensystem Realization Algorithm (ERA), Time Series (ARMA) method, Frontiers in Ocean Engineering 47 complex exponential method, etc. [15][16] .…”

Section: Classification Of Modal Parameter Identification Methods In ...mentioning

confidence: 99%

Identification of Structural Parameters of Offshore Platforms Based on Reality and Virtual Technology

2022

FOE

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Offshore platforms have complex structures, high construction costs and harsh operating environments. To prevent serious and fatal accidents, regular/irregular inspections and safety assessments of outdoor platform systems are required during work. Especially for external platforms in the middle and late stages of operation and platforms that are not running, it is more important to perform effective health detection. The purpose of this paper is to study the identification of structural parameters of offshore platforms based on the reality and virtual technology. This paper summarizes the feedback-based linear structure parameter identification methods at home and abroad in recent years, and makes a comprehensive analysis of its application origin, research importance, research status at home and abroad, existing research methods and existing problems. This paper points out that the main problem in the application of output response-based modal parameter identification technology in the field of water engineering is to eliminate the noise and null conditions of measurement signals and signal keys. Denoising and removing spurious noise is a logical model command. Experiments have shown that the recognition results are very close to the real values, and the recognition accuracy will decrease in the presence of noisy signals, and the use of virtual reality technology can improve the accuracy by about 10%.

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Section: Classification Of Modal Parameter Identification Methods In ...mentioning

confidence: 99%

Identification of Structural Parameters of Offshore Platforms Based on Reality and Virtual Technology

2022

FOE

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“…[3][4][5][6] As of the 2010s, the applications of GNSS in SHM are primarily limited to kinematic positioning for short-term monitoring (a few hours to days), studying the dynamic behaviors of structures (e.g., long-span bridges, high-rise buildings). [7][8][9][10][11][12][13] Static GNSS techniques have been widely applied in long-term geological hazards monitoring (e.g., volcanos, faulting, landslides, subsidence) during the past two decades. In contrast, GNSS techniques have rarely been used for long-term offshore SHM.…”

Section: Motivationmentioning

confidence: 99%

A methodology for long-term offshore structural health monitoring using stand-alone GNSS: case study in the Gulf of Mexico

Wang

2023

Structural Health Monitoring

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This article presents a robust methodology for long-term offshore structural health monitoring (SHM) using the Global Navigation Satellite Systems (GNSS). The methodology relies on recently developed regional reference frames and single-receiver phase-ambiguity-fixed Precise Point Positioning techniques. The stable Gulf of Mexico Reference Frame 2020 (GOM20) provides a robust and consistent reference system for long-term offshore SHM in the Gulf of Mexico (GOM). Continuous GNSS observations (DEV1, 2010–2020) on a fixed platform in the Eugene Island 330 oil field are used to illustrate the methodology. The platform was installed in 1982 in 82-m water about 130 km away from the Mississippi Delta coastline. The major monitoring items include horizontal movements, seafloor subsidence, structure submergence, and seasonal oscillations. The stand-alone GNSS monitoring achieves 3- to 4-mm root-mean-square accuracy in the horizontal direction and 7 mm in the vertical direction for daily positions in the GOM region. According to this study, the GNSS antenna (DEV1) has moved 6 cm toward the northeast with respect to GOM20 since 2010; the ongoing structure submergence rate in the Eugene Island 330 oil field area is approximately 15 mm/year, a combination of seafloor subsidence (12 mm/year) and sea-level rise (2.6 mm/year) with respect to GOM20. The submergence in the future 40 years (2021–2060) would be greater than 0.6 m, likely between 0.8 and 1.0 m, but is unlikely to exceed 1.3 m. The peak-to-trough amplitudes of the seasonal movements at the top of the platform are below 5 mm in all three directions, comparable with the seasonal movements recorded by onshore GNSS in the Louisiana coastal region. The methodology introduced in this article can be applied to SHM in other offshore regions where stable regional reference frames are available.

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“…First, map the GNSS satellite positioning reference ellipsoid (longitude and latitude coordinates) to the Shanghai urban construction coordinates, and then map the Shanghai urban construction coordinates to the local coordinate system of the 3D virtual scene. Through this scheme, the mobile machine can be simulated in real time in the road or field of the three-dimensional scene [16]. The 3D virtual scene is made based on the CAD drawings that have been surveyed and mapped.…”

Section: Coordinate Transformation Mappingmentioning

confidence: 99%

Application Research on Real-Time Interactive Simulation System of Container Yard Based on Unity3D

Hu¹,

Zhou²,

Yu³

2022

OJMSi

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In view of the limitations of the mathematical method used in the container terminal logistics system, this paper uses Unity3D to establish a computer simulation model for the container automated yard, which dynamically displays the operation process of the container automated yard logistics system in real time. Through the plane four-parameter coordinate conversion method and by taking the Shanghai urban construction coordinate system as the medium, it completes the conversion from the satellite positioning reference ellipsoid coordinates to the three-dimensional virtual scene coordinates. The example results show that the method is reliable and practical, improves the accuracy and efficiency of positioning, and provides a reliable reference basis for the container terminal logistics system.

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Dynamic monitoring of an offshore jacket platform based on RTK-GNSS measurement by CF-CEEMDAN method

Cited by 13 publications

References 31 publications

Identification of Structural Parameters of Offshore Platforms Based on Reality and Virtual Technology

Identification of Structural Parameters of Offshore Platforms Based on Reality and Virtual Technology

A methodology for long-term offshore structural health monitoring using stand-alone GNSS: case study in the Gulf of Mexico

Application Research on Real-Time Interactive Simulation System of Container Yard Based on Unity3D

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