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Lifetime prediction of the guy ropes

Realization

2012-2015

Description

Realization:

Guyed mast Krásné 2011

Guyed mast Javořice 2012-2013

Two guyed masts Topolná 270 m 2014-2015

Place:

Krásné, Pardubice Region, Czech Republic Javořice, Vysočina Region, Czech Republic Topolná, Zlín Region, Czech Republic

Description:

  • Determination of residual life time of guy ropes based on the results of inspections and theoretical calculation. The input parameters for calculation are determined using measurement and supplemented by meteorological data from long-term records (wind speed and direction occurrence). The aim of the measurement is accurate the relationship between wind load and stress range spectra, and also more accurate specification of wind parameters on the site (terrain roughness etc.).
  • The stress ranges are measured using strain gauges on guy ropes and selected points of the structure. Strain gauges measurement is supplemented by acceleration measurement of the structures, especially in guyed levels. Accelerometers with a high sensitivity of 10 V/g are used. Simultaneously with the measurement of the structural response, wind speed and direction is recorded using ultrasonic anemometers of sampling frequency min. 10 Hz. The stress range spectra depending on the various wind speeds and other characteristics (direction, turbulence intensity, spectral density) resulting from the measurement.
  • Measurements and assessments are carried out in collaboration with Institute of Theoretical and Applied Mechanics AS CR, v.v.i

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