Bridge monitoring using BDS-RTK and GPS-RTK techniques

Xi, Rui; Jiang, Weiping; Meng, Xiaolin; Chen, Hua; Chen, Qusen

doi:10.1016/j.measurement.2018.02.001

Cited by 73 publications

(41 citation statements)

References 29 publications

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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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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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Section: Description Of Bridge Health Monitoringmentioning

confidence: 99%

“…Moreover, the real-time kinematic global positioning system (RTK-GPS) device is employed to record the relative 3D positions of the rovers (i.e., the mobile stations) with respect to the base (i.e., the reference station) in the geographic coordinate system (X, Y, Z), as shown in Figure 3 [20][21][22]. e estimation accuracy of relative 3D positions can be improved by double-difference calculation of carrier phases from the base and rovers [20,22]. In detail, the determination steps of relative 3D positions can be summarized as follows [23,24]: (1) the reference station continuously observes all the GPS satellites and returns realtime monitoring data to the mobile station; (2) the mobile stations receive the observed data from the reference station through radio-receiving equipment while receiving GPS satellite signals as well; (3) the real-time calculations of the baseline vector between reference and mobile stations are conducted, and the coordinates of the mobile station are further obtained by summing the coordinates of the reference station and baseline vector together; and (4) the coordinates of the reference station and mobile station are calculated under the WGS84 coordinate system, so the coordinates of the reference station and mobile station are further projected onto the North-East-Depth geographic coordinate system (X, Y, Z); finally, the relative 3D positions of mobile stations with respect to the reference station in the geographic coordinate system are obtained according to the principle of relative positioning.…”

Section: Description Of Bridge Health Monitoringmentioning

confidence: 99%

Evaluation of the Wind‐Resistant Performance of Long‐Span Cable‐Stayed Bridge Using the Monitoring Correlation between the Static Cross Wind and Its Displacement Response

Gao-xin

Feng

2018

Shock and Vibration

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The wind-resistant performance of existing long-span cable-stayed bridge structures will inevitably deteriorate due to concrete carbonation, reinforcement corrosion, accumulated fatigue damage, etc., which can threaten the entire bridge safety. However, few studies currently focus on assessing the wind-resistant performance of existing long-span cable-stayed bridge structures, and at present, no studies have revealed how to identify the deterioration of the wind-resistant performance using a bridge health-monitoring technique. Therefore, based on the health-monitoring system installed on the Sutong Cable-stayed Bridge, the monitoring wind field and GPS displacement are captured to analyze the wind-resistant performance. First, the correlation between static cross wind and transversal displacement is analyzed, which is nearly linear but also contains discrete points caused by environmental noise. Second, considering that the discrete points can decrease the identification accuracy, one new method called the cross-correlation analysis of wavelet packet coefficients is put forward to effectively remove the discrete points. Third, considering that the traditional function cannot match the monitoring correlation very well, some new fitting functions are thoroughly studied to determine the best function for fitting the monitoring correlation. Fourth, the abnormal variation in the monitoring correlation caused by a deterioration in the wind-resistant performance is studied, and the root-mean-square (RMS) variable, which represents the difference between a good service state and a deteriorated service state, is used as a detection indicator to identify the deterioration of wind-resistant performance. Finally, the monitoring data from ten months are selected to evaluate the wind-resistant performance of the Sutong Bridge, and the result shows that its wind-resistant performance was still in a good service state during these ten months.

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“…Efforts have been made in recent years in the use of an integrated monitoring system that consists of dual frequency GPS or Global Navigation Satellite System (GNSS) receivers and triaxial accelerometers for the detection of the dynamics of long span road bridges [6,7]. Recently, bridge monitoring was implemented using the BeiDou Satellite Navigation System (BDS)-Real-Time Kinematic (RTK) and GPS-RTK techniques [8].…”

Section: Introductionmentioning

confidence: 99%

Galileo Augmenting GPS Single-Frequency Single-Epoch Precise Positioning with Baseline Constrain for Bridge Dynamic Monitoring

et al. 2019

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The Single-frequency Single-epoch double-differenced baseline resolution technique of Global Positioning System (GPS) provides a good opportunity for monitoring the displacement or deflection behavior of bridges under different loading conditions in real-time. However, for single GPS, a high success rate baseline solution is difficult to achieve due to the lack of sufficient visible satellites and the low accuracy of float solutions. Galileo Satellite Navigation System (Galileo) has 14 medium earth orbit satellites (as of May 2018) that can be used to supplement GPS. The frequency bands of Galileo overlap with that of GPS on E1/L1 and E5a/L5, which is conducive to the combination of observations in integration positioning. Accordingly, Galileo augmenting GPS is an effective and necessary approach to improve the positioning availability and reliability. Moreover, using the baseline length constraint can improve the accuracy of float solutions, narrow the search space, and finally increase the success rate of ambiguity resolution and positioning. The single-frequency single-epoch double-differenced GPS/Galileo mathematical model with baseline length constraint is deduced in this paper. Two sets of GNSS real bridge data were used for further analysis on the improvement of GPS/Galileo with baseline length constraint when compared to single GPS. Finally, a Fast Fourier Transformation (FFT) algorithm was adopted for precisely detecting the local dominant frequencies of XB, YB, and ZB direction of the two stations.

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Bridge monitoring using BDS-RTK and GPS-RTK techniques

Cited by 73 publications

References 29 publications

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

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

Evaluation of the Wind‐Resistant Performance of Long‐Span Cable‐Stayed Bridge Using the Monitoring Correlation between the Static Cross Wind and Its Displacement Response

Galileo Augmenting GPS Single-Frequency Single-Epoch Precise Positioning with Baseline Constrain for Bridge Dynamic Monitoring

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