Damping estimation using free decays response in short telecom structures

The constant changes to which telecommunications have accustomed us in recent decades oblige a similar adaptation other branches of engineering. Structures such as monopoles and short lattice towers are becoming increasingly wind-sensitive dynamically active with the introduction 5G technology, will require new larger heavier antenna equipment. Expert consultants agree need revise current accounting for structural damping that has not changed design codes after more than 30 years. A complete set full-scale field tests is presented obtain reliable values communications structures. described methodology analyses free-decaying responses obtained excitation main analysed cantilevered modes time domain. standardized acquisition system based on local accelerometers an external innovative using Video Gauge TM required desired responses, use curve-fitting eigensystem realization algorithm estimate modal properties corresponding damping. results higher both estimators perfectly converge consultant feedback, suggested over-conservative (i.e. low) compared conventional used civil