The Stuttgart TV Tower — displacement of the top caused by the effects of sun and wind

Breuer, Peter; Chmielewski, Tadeusz; Górski, Piotr; Konopka, Eduard; Tarczyński, Lesław

doi:10.1016/j.engstruct.2008.03.008

Cited by 78 publications

(48 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In addition, high acquisition rate GPS receivers can be used for detecting natural frequencies of structures. The GPS performance for identifying the dynamic behaviour of a structure was con rmed by simulated vibration tests [8,15,17,2], as well as by validation with other dedicated instruments for detecting structural vibrations (e.g. accelerometers).…”

Section: Introductionmentioning

confidence: 99%

GPS for structural health monitoring – case study on the Basarab overpass cable-stayed bridge

Lepadatu¹,

Tiberius

2014

Journal of Applied Geodesy

View full text Add to dashboard Cite

Abstract:The Basarab cable-stayed bridge is a newly built structure in Bucharest, Romania, which was inaugurated in June 2011. Before the o cial opening, in order to assure its quali cation for tra c, it had to pass several loading tests with convoys of trucks and trams. For this, besides a priori evaluation using the Finite Element Method (FEM), levelling and acceleration measurements were made to identify vertical displacements, as well as vibration frequencies of the bridge. The three-day loading trial of the bridge represented a good opportunity for setting-up a GPS campaign for structural monitoring of the Basarab bridge. Taking advantage of the redundancy obtained via simultaneous multi-sensor measurements, it was possible to compare and validate the GPS estimated displacements with both FEM and levelling. Moreover, the dynamic behaviour of the bridge during a dynamic loading test was evaluated using a 20 Hz GPS observation rate and validated afterwards with vibration frequency estimates from acceleration time series. Along with simulations (FEM) and laboratory tests, the in situ monitoring of a structure has a particular importance in establishing the safety of a newly-built structure. Furthermore, in some cases permanent monitoring is needed for safety and economic reasons, especially for strategic structures such as dams and bridges. GPS technology can satisfy this request due to its real-time processing capability and thus it can be looked upon as a new and promising tool for dynamic evaluation of engineering structures. In this contribution we have also assessed the performance of GPS with regard to accuracy and false alarm probability demands for the continuous monitoring of the Basarab cable-stayed bridge.

show abstract

Section: Introductionmentioning

confidence: 99%

GPS for structural health monitoring – case study on the Basarab overpass cable-stayed bridge

Lepadatu¹,

Tiberius

2014

Journal of Applied Geodesy

View full text Add to dashboard Cite

show abstract

“…The success of the global positioning system (GPS) developed for navigation, in defining sudden seismic movements and very low displacements has inspired studies to investigate the definition of faster displacements (Nickitopoulou et al 2006). Studies in which GPS is employed in the observation of the high buildings were carried out by Ashkenazi and Roberts (1997), Brownjohn et al (1998Brownjohn et al ( , 2005, Chen et al (2001), Roberts et al (2001), Breuer et al (2002Breuer et al ( , 2008, Tamura et al (2002), Çelebi and Sanli (2002), Li (2004), Kijewski-Correa et al (2006), Kijewski-Correa and Kochly (2007), and Yigit et al (2010).…”

Section: Introductionmentioning

confidence: 99%

“…Breuer examined the Stuttgart TV tower in 2002. Then later Breuer et al (2008) defined the displacement threshold and vibration characterization (natural frequency) using the dynamic and static mode of GPS (Breuer et al 2002(Breuer et al , 2008.…”

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

“…It was found that the GPS can monitor displacements with an amplitude larger than 15 mm, at a level of outliers <1.5% [4]. Breuer et al (2008) described a procedure using GPS to monitor the deformation of the Stuttgart TV Tower caused by the effects of sun and wind. It indicated that the GPS can measure the total dynamic wind response, not only its dynamic fluctuating component but also the static component [5].…”

Section: Introductionmentioning

confidence: 99%

“…Breuer et al (2008) described a procedure using GPS to monitor the deformation of the Stuttgart TV Tower caused by the effects of sun and wind. It indicated that the GPS can measure the total dynamic wind response, not only its dynamic fluctuating component but also the static component [5]. Hristopulos et al (2007) proposed a systematic procedure for modeling the stochastic and systematic components of the GPS displacements of a tall-building, and the natural frequency of the building was accurately extracted at 0.19 Hz [6].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the dynamic response of a long span bridge using GPS/accelerometer/anemometer under typhoon loading

Han

Wang

Meng

et al. 2016

Engineering Structures

View full text Add to dashboard Cite

(2016) Analysis of the dynamic response of a long span bridge using GPS/accelerometer/anemometer under typhoon loading. Engineering Structures, 122 (2016 A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription.For more information, please contact eprints@nottingham.ac.uk Analysis of the dynamic response of a long span bridge using GPS/accelerometer/anemometer under typhoon loading AbstractLarge flexible engineering structures, such as long span bridges or tall buildings, are susceptible to quasi-static and dynamic deformations caused by different loading situations, thus accurate displacement measurements are desirable to assess the integrity and reliability of the structure. In this study, an integrated system that includes Global Positioning System (GPS), accelerometer and anemometer was developed to obtain the responses of a long span bridge to the extreme wind loading. Spectral analysis based on the Fast Fourier Transform (FFT) algorithm was first carried out to detect the dominant frequencies of the bridge. Then the noisy GPS displacement measurements and accelerometer data are de-noised using the Vondrak filter, and the low frequency disturbance was separated from GPS displacement time series. A least-squares based displacement reconstruction scheme using noise-mitigated accelerations was employed, and the Tikhonov regularization scheme with optimal selected regularization factor was used to alleviate the ill-posedness. At last, an adaptive recursive least squares (RLS) filter was adopted to separate the slow-varying movements, and the total displacement with enhanced measurement accuracy was obtained from the combined quasistatic and high-frequency dynamic displacements. A field monitoring data set collected on the Erqi Yangtze River Bridge, a three-tower cable-stayed bridge located in Wuhan in China, was used to validate the effectiveness of the proposed integration processing scheme. The GPS/accelerometer/anemometer installed on the center supporting tower was used to characterize the interaction between the responses and the ambient wind loadings. The results demonstrate the proposed technique can significantly improve the measurement accuracy of bridge displacement under strong winds. The deformation with the amplitude of several millimeters can be successfully detected, and the spectrum of the bridge response obtained from both GPS data and accelerometer data reveals the identified first natural frequency of the bridge is 0.172 Hz.

show abstract

The Stuttgart TV Tower — displacement of the top caused by the effects of sun and wind

Cited by 78 publications

References 11 publications

GPS for structural health monitoring – case study on the Basarab overpass cable-stayed bridge

GPS for structural health monitoring – case study on the Basarab overpass cable-stayed bridge

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

Analysis of the dynamic response of a long span bridge using GPS/accelerometer/anemometer under typhoon loading

Contact Info

Product

Resources

About