Wind and Structures

  • 제12권5호
  • /
  • Pages.401-412
  • /
  • 2009
  • /
  • 1226-6116(pISSN)
  • /
  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Monitoring of tall slender structures by GPS measurements

  • 투고 : 2008.09.19
  • 심사 : 2009.05.11
  • 발행 : 2009.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

A method is applied for the estimation of structural damage of tall slender structures using natural frequency and displacements measurements by GPS. The relationship between the variation in the global stiffness matrix (or in the stiffness of each finite element) and the change in the natural frequencies of the structure is given. In engineering practice the number of frequencies which can be derived by GPS measurement of long-period structures will be equal to one, two or three first natural frequencies. This allows us in initial studies to detect damage with frequency changes based on forward methods in which the measured frequencies are compared with the predicted analytical data. This idea, of health monitoring from possible changes to natural frequencies, or from a statement of excessive displacements is applied to the Stuttgart TV Tower.

키워드

참고문헌

  1. Breuer, P., Chmielewski, T., Gorski, P., Konopka, E. and Tarczynski, L. (2008), "The Stuttgart TV Tower - displacement of the top caused by the effects of sun and wind", Eng. Struct., 30, 2771-2781. https://doi.org/10.1016/j.engstruct.2008.03.008
  2. Gorski, P. and Chmielewski, T. (2008), "A comparative study of along and cross-wind responses of a tall chimney with and without flexibility of soil", Wind Struct., 11, 121-135. https://doi.org/10.12989/was.2008.11.2.121
  3. Hassiotis, S. and Jeong, G.D. (1995), "Identification of stiffness reduction using natural frequencies", J. Eng. Mech. ASCE, 121(10), 1106-1113. https://doi.org/10.1061/(ASCE)0733-9399(1995)121:10(1106)
  4. Leonhardt, F. (1956), "Der Stuttgarter Fernsehturm", Beton und Stahlbetonbau, April/Mai 1956: 1-21 (in German).
  5. Lenk, H. (1966), "Uber die Windschwingungen des Stuttgarter Fernsehturms", Bautechnik, Mai 1966: 145-148, 248-252, 278-283 (in German).
  6. Psimoulis, P., Pytharouli, S., Karambalis, D. and Stiros, S. (2008), "Potential of GPS to measure frequencies of oscillation of engineering structures", J. Sound Vib., 318(3), 606-623. https://doi.org/10.1016/j.jsv.2008.04.036
  7. Xia, Y. and Hao, H. (2003), "Statistical damage identification of structure with frequency changes", J. Sound Vib., 263, 853-870. https://doi.org/10.1016/S0022-460X(02)01077-5

피인용 문헌

  1. Monitoring horizontal displacements in a vertical profile of a tall industrial chimney using Global Positioning System technology for detecting dynamic characteristics vol.22, pp.7, 2015, https://doi.org/10.1002/stc.1730
  2. Dynamic characteristic of tall industrial chimney estimated from GPS measurement and frequency domain decomposition vol.148, 2017, https://doi.org/10.1016/j.engstruct.2017.06.066
  3. Investigation of dynamic characteristics of tall industrial chimney based on GPS measurements using Random Decrement Method vol.83, 2015, https://doi.org/10.1016/j.engstruct.2014.11.006
  4. Full-scale measurements of wind effects and modal parameter identification of Yingxian wooden tower vol.17, pp.6, 2013, https://doi.org/10.12989/was.2013.17.6.609
  5. Bridge safety monitoring based-GPS technique: case study Zhujiang Huangpu Bridge vol.9, pp.6, 2009, https://doi.org/10.12989/sss.2012.9.6.473
  6. Combining GPS and accelerometers' records to capture torsional response of cylindrical tower vol.25, pp.1, 2009, https://doi.org/10.12989/sss.2020.25.1.111
  7. Variability evaluation of dynamic characteristics of highway steel bridge based on daily traffic-induced vibrations vol.164, pp.None, 2009, https://doi.org/10.1016/j.measurement.2020.108074