Dynamic Deformation Monitoring of  Tall Structure Using GPS Technology

Lovse, J. W.; Teskey, W. F.; Lachapelle, G.; Cannon, M. Elizabeth

doi:10.1061/(asce)0733-9453(1995)121:1(35)

Cited by 173 publications

(84 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The use of Global Navigation Satellite Systems (GNSS) for deflection monitoring of structures (Rizos et al, 2010, Çelebi, 1998, Teague et al, 1995, Lovse et al, 1995, and in particular long span bridges has been an area of ongoing research for over 20 years. The work initially focussed on using carrier phase Global Positioning System (GPS) observations, gathered from a reference GPS receiver located adjacent to the bridge, as well as one or more GPS receivers attached to the bridge.…”

Section: Introductionmentioning

confidence: 99%

The use of PSD analysis on BeiDou and GPS 10 Hz dynamic data for change detection

Roberts

2017

Advances in Space Research

View full text Add to dashboard Cite

This paper examines the use of GPS and BeiDou data to measure the movements of two oscillating platforms in a series of field experiments. Data were gathered from a variety of GNSS receivers at a rate of 10Hz, and processed in an on the fly manner, resulting in 3D coordinates at a 10Hz rate with the corresponding precise time. These data were then analysed using a Power Spectral Density (PSD) function to derive the frequency of the movements. The positional data were also compared by matching a 500 epoch section of the data from the start with 190 successive 500 epoch long sections in order to demonstrate whether the movement measured was constant throughout, or whether there were any changes. The results show that the correlation of the positional data over a 30,737 epoch period deviates between 99.8% to 76.7% correlation with RMS values of 89.2%, 87.9% and 77.5% in the Eastings, Northings and Vertical directions respectively when using GPS. The RMS of the Eastings and Northings remain the same when BeiDou is introduced, but the height component improves slightly to 78.9%. The frequency analysis of the same 500 epoch long sections is constantly measured at 0.1172Hz in all three positional components, illustrating less deviation when analysing the frequencies. The main conclusion is that analysis of the resulting PSD output from GNSS data gathered on an oscillating platform is more constant and precise than analysing the results of the coordinates alone. This suggests that such analysis would be well suited for a Structural Health Monitoring system. The introduction of BeiDou also improves the results slightly, even in its current incomplete constellation. The novelty of this work is the analysis of the movements in such a controlled environment, and the correlation approach of the resulting positional output as well as the frequency derivation from the positions using both GPS and BeiDou. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 China. AbstractThis paper examines the use of GPS and BeiDou data to measure the movements of two oscillating platforms in a series of field experiments. Data were gathered from a variety of GNSS receivers at a rate of 10Hz, and processed in an on the fly manner, resulting in 3D coordinates at a 10Hz rate with the corresponding precise time. These data were then analysed using a Power Spectral Density (PSD) function to derive the frequency of the movements. The positional data were also compared by matching a 500 epoch section of the data from the start with 190 successive 500 epoch long sections in order to demonstrate whether the movement measured was constant throughout, or whether there were any changes. The results show that the correlation of the positional data over a 30,737 epoch period deviates between 99.8% to 76.7% correlation with RMS values of 89.2%, 87.9% and 77.5...

show abstract

Section: Introductionmentioning

confidence: 99%

The use of PSD analysis on BeiDou and GPS 10 Hz dynamic data for change detection

Roberts

2017

Advances in Space Research

View full text Add to dashboard Cite

show abstract

“…For tall constructions like the TV tower considered in this study, GPS has been used in defining the natural frequency and displacement in the studies such as, examining the 160 m high Calgary tower in Canada, against wind burden in 1995 (Lovse et al 1995); Guo and Ge (1997) investigated the effect of a strong typhoon on the Dwang tower (325 m high); in 2000Çelebi presented the horizontal displacement measurement of a 44-storey building (Çelebi 2000). Breuer examined the Stuttgart TV tower in 2002.…”

Section: Introductionmentioning

confidence: 99%

Determining the behaviour of high-rise structures with geodetic hybrid sensors

Pehlivan

Aydın

Gülal

et al. 2013

Geomatics, Natural Hazards and Risk

View full text Add to dashboard Cite

Observing the normal oscillations and the behaviours of high-engineering structures has become almost a necessity in terms of construction security and human health. For this purpose, an real-time kinematic GPS (NovAtel 400) and a tilt sensor (Leica Nivel20) were installed in a TV tower (220 m high) located in Istanbul, Turkey. The observation serials were recorded over a period of 9 days. All data-sets in X and Y directions were examined in the time domain and were analyzed using FFT€. The dominant frequency values (significant frequencies) were determined by comparing at the high-and low-frequency values. These dominant frequencies showed that the tower made 4-and 6-second short-period oscillations and 24-and 12-hour long-period oscillations. All the observation signals were re-created by the significant low-frequency values using the inverse Fourier transform. Thus, the motion model of the tower was determined over 9 days. In this study, the 24-hour and 12-hour periodic oscillations were defined that represent the behaviour of the tower in relation to the effect of the sun's radiation and the temperature changes.

show abstract

“…For example, accelerometers cannot measure the swing of total vibration of the structure because acceleration cannot be truly obtained when the structure moves slowly; laser interferometer and electronic distance measurement instrument are limited by climate condition, i.e. a clear line of sight is the basic condition in which they can work (Lovse et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

“…Mm-level accuracy can be obtained by using a differential GPS carrier-phase approach and the sampling frequency of 10 Hz or 20 Hz are now available from GPS receivers. All these improvements provide a great opportunity to monitor the dynamic characteristics of large structures in real-time or near real-time (Cheng et al, 2002;Lovse et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Monitoring the dynamic behaviors of the Bosporus Bridge by GPS during Eurasia Marathon

Erdoğan

Akpınar

Gülal

et al. 2007

Nonlin. Processes Geophys.

View full text Add to dashboard Cite

Abstract. Engineering structures, like bridges, dams and towers are designed by considering temperature changes, earthquakes, wind, traffic and pedestrian loads. However, generally, it can not be estimated that these structures may be affected by special, complex and different loads. So it could not be known whether these loads are dangerous for the structure and what the response of the structures would be to these loads. Such a situation occurred on the Bosporus Bridge, which is one of the suspension bridges connecting the Asia and Europe continents, during the Eurasia Marathon on 2 October 2005, in which 75 000 pedestrians participated. Responses of the bridge to loads such as rhythmic running, pedestrian walking, vehicle passing during the marathon were observed by a real-time kinematic (RTK) Global Positioning System (GPS), with a 2.2-centimeter vertical accuracy. Observed responses were discussed in both time domain and frequency domain by using a time series analysis. High (0.1-1 Hz) and low frequencies (0.00036-0.01172 Hz) of observed bridge responses under 12 different loads which occur in different quantities, different types and different time intervals were calculated in the frequency domain. It was seen that the calculated high frequencies are similar, except for the frequencies of rhythmic running, which causes a continuously increasing vibration. Any negative response was not determined, because this rhythmic effect continued only for a short time. Also when the traffic load was effective, explicit changes in the bridge movements were determined. Finally, it was seen that bridge frequencies which were calculated from the observations and the finite element model were harmonious. But the 9th natural frequency value of the bridge under all loads, except rhythmic running could not be determined with observations.

show abstract

Dynamic Deformation Monitoring of Tall Structure Using GPS Technology

Cited by 173 publications

References 6 publications

The use of PSD analysis on BeiDou and GPS 10 Hz dynamic data for change detection

The use of PSD analysis on BeiDou and GPS 10 Hz dynamic data for change detection

Determining the behaviour of high-rise structures with geodetic hybrid sensors

Monitoring the dynamic behaviors of the Bosporus Bridge by GPS during Eurasia Marathon

Contact Info

Product

Resources

About