Real-time kinematic PPP GPS for structure monitoring applied on the Severn Suspension Bridge, UK

Tang, Xu; Roberts, Gethin Wyn; Li, Xingxing; Hancock, Craig M.

doi:10.1016/j.asr.2017.05.010

Cited by 41 publications

(29 citation statements)

References 22 publications

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“…In order to track the riverbed displacements in the directions along and across the tunnel centerline, the previous horizontal EW-NS coordinate system was rotated by 63.7 degrees clockwise ( = −63.7 ) to form an X-Y coordinate system as shown in Figure 8. X = EW × sinθ + NS × cosθ Y = EW × cosθ − NS × sinθ (5) After the rotation, the X-axis is parallel to the excavation direction, and the Y-axis is perpendicular to the excavation direction. The displacement time series with respect to the rotated coordinate system of these six rover antennas are illustrated in Figure 9.…”

Section: Resultsmentioning

confidence: 99%

“…Global positional system (GPS) techniques, global navigation satellite systems (GNSS) in general, have been frequently applied for studying dynamic behaviors of engineering structures during the past two decades [1][2][3][4][5][6][7][8]. Recently, GPS techniques have been applied for monitoring long-term stability and static deformation of engineering structures [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Detection and Monitoring of Tunneling-Induced Riverbed Deformation Using GPS and BeiDou: A Case Study

et al. 2019

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Shield tunneling under rivers often requires monitoring riverbed deformations in near real-time. However, it is challenging to measure riverbed deformation with conventional survey techniques. This study introduces a comprehensive method that uses the Global Positioning System (GPS) of the USA and the BeiDou navigation satellite system (BeiDou) of China to monitor riverbed deformation during the construction of twin tunnels beneath the Hutuo River in Shijiazhuang, China. A semi-permanent GPS network with one base station outside the river and six rover stations within the river was established for conducting near real-time and long-term monitoring. The distances between the base and the rover antennas are within two kilometers. The network was continuously operating for eight months from April to December 2018. The method is comprised of three components: (1) Monitoring the stability of the base station using precise point positioning (PPP) method, a stable regional reference frame, and a seasonal ground deformation model; (2) monitoring the relative positions of rover stations using the carrier-phase double-difference (DD) positioning method in near real-time; and (3) detecting abrupt and gradual displacements at both base and rover stations using an automated change point detection algorithm. The method is able to detect abrupt positional-changes as minor as five millimeters in near real-time and gradual positional-changes at a couple of millimeters per day within a week. The method has the flexibility of concurrent processing different GPS and BeiDou data sessions (e.g., every 15 minutes, 30 minutes, one hour, one day) for diffident monitoring purposes. This study indicates that BeiDou observations can also achieve few-millimeter-accuracy for measuring displacements. Parallel processing GPS and BeiDou observations can improve the reliability of near real-time structural deformation monitoring and minimize false alerts. The method introduced in this article can be applied to other urban areas for near real-time and long-term structural health monitoring.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Detection and Monitoring of Tunneling-Induced Riverbed Deformation Using GPS and BeiDou: A Case Study

et al. 2019

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“…Meanwhile, the real‐time kinematic GNSS‐PPP was successfully used to measure the displacements of the Severn suspension bridge in UK. PPP can replace double difference for structure monitoring when double difference becomes unavailable on account of natural disasters, and so on . Numerous studies on the applications of post‐processing or real‐time PPP techniques for SHM have been performed with similar results by some other researchers …”

Section: Gnss Kinematic Positioning Modes For Structural Monitoringmentioning

confidence: 83%

Global Navigation Satellite System‐based positioning technology for structural health monitoring: a review

Meng

Yan

et al. 2019

Struct Control Health Monit

108

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Summary Global Navigation Satellite System (GNSS) positioning technology has had widespread applications in the structural health monitoring as its overall performance has improved significantly in the last two decades. It is capable of providing timely and accurate structural vibration information such as dynamic displacements and modal frequencies at higher performance than traditional accelerometers. The studies summarized in this paper focus on the improvement of the multi‐sensors and multi‐constellation data acquisition techniques, the improvement of multiple approaches for erroneous noise mitigation, and innovative modal parameter identification methods. We also detailed the applications of GNSS on the deformation monitoring for towers, chimneys, tall buildings, and bridges. With continuous enhancements in the algorithm and hardware of GNSS, it is expected that the application of GNSS technology can be expanded to other fields such as bridge cable‐force measurements and bridge weight‐in‐motion as well as structural deformation monitoring.

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“…LVDT sensor are generally used for short span bridges over accessible land and when a fixed reference below the bridge is available (Moreu et al, 2015). GPS monitoring is becoming more and more widespread for bridge displacement measurement (Wong, 2007;Tang et al, 2017;Xi et al, 2018). However, it is generally challenging to measure relatively stiff footbridge where movement ranges are modest.…”

Section: Performance Monitoringmentioning

confidence: 99%

Lifecycle Management, Monitoring and Assessment for Safe Large-Scale Infrastructures: Challenges and Needs

Limongelli

Previtali

Cantini

et al. 2019

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Many European infrastructures dating back to '50 and '60 of the last century like bridges and viaducts are approaching the end of their design lifetime. In most European countries costs related to maintenance of infrastructures reach a quite high percentage of the construction budget and additional costs in terms of traffic delay are due to downtime related to the inspection and maintenance interventions. In the last 30 years, the rate of deterioration of these infrastructures has increased due to increased traffic loads, climate change related events and man-made hazards. A sustainable approach to infrastructures management over their lifecycle plays a key role in reducing the impact of mobility on safety (over 50 000 fatalities in EU per year) and the impact of greenhouse gases emission related to fossil fuels. The events related to the recent collapse of the Morandi bridge in Italy tragically highlighted the sheer need to improve resilience of aging transport infrastructures, in order to increase the safety for people and goods and to reduce losses of functionality and the related consequences. In this focus Structural Health Monitoring (SHM) is one of the key strategies with a great potential to provide a new approach to performance assessment and maintenance over the life cycle for an efficient, safe, resilient and sustainable management of the infrastructures. In this paper research efforts, needs and challenges in terms of performance monitoring, assessment and standardization are described and discussed.

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Real-time kinematic PPP GPS for structure monitoring applied on the Severn Suspension Bridge, UK

Cited by 41 publications

References 22 publications

Detection and Monitoring of Tunneling-Induced Riverbed Deformation Using GPS and BeiDou: A Case Study

Detection and Monitoring of Tunneling-Induced Riverbed Deformation Using GPS and BeiDou: A Case Study

Global Navigation Satellite System‐based positioning technology for structural health monitoring: a review

Lifecycle Management, Monitoring and Assessment for Safe Large-Scale Infrastructures: Challenges and Needs

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