WIND EFFECTS ON LARGE ANTENNAS AND TELECOMMUNICATION TOWERS: ANALYSIS AND DESIGN OF MAIN COMPONENTS AND JOINTS

摘要

Line-like slender systems (trussed towers) require particular attention to the study of the structural answer. Specifically attention must be pointed on an accurate comparison between the available analysis methods. In this specific case the dynamic analysis has confirmed the outcome of the static analysis. Moreover the global stability analysis showed how the structural reliability is suitably assured with regard to the live loads. The dynamic interaction effect between trussed tower and cable due to the oscillation of the external cables has been fully considered and it showed a beneficial effect on the structural damping. Finally, specific attention has been focused in joint design of the main elements. The connection of the corner legs has been designed to completely guarantee the continuity of the cross-section and a linear elastic analysis has been carried out in order to have a local check of the corner legs stress behaviour. The analysis showed a substantial agreement with the normative checks and the numerical results.