Long-time observation of wind and temperature effects on TV towers

摘要

This paper is concerned with the application of available data to the determination of service life of antennae towers and masts, the important part of which is the GRP cylindrical extension. In some cases, they have already been in service for nearly 30 years, so the question of their remaining lifetime is important. Long-term observations were made on one of these extensions in 1993-94, the measured data being registered and classified according to their magnitude, using the rain-flow method. The application of the Palmgren-Miner criterion has given the possibility of estimating the remaining service life of the structure.