Evaluation of non-linear analysis of guyed antenna towers

✍ Scribed by Y.M.F. Wahba; M.K.S. Madugula; G.R. Monforton

• Book ID: 104268975
• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 262 KB
• Volume: 68
• Category: Article
• ISSN: 0045-7949
• DOI: 10.1016/s0045-7949(98)00025-x

✦ Synopsis

This paper discusses two dierent ®nite element models used in the analysis of guyed antenna towers. In the ®rst approach, three dimensional truss elements are used to model the latticed mast of the tower and non-linear cable elements are used for the guys; this results in a large number of elements and degrees-of-freedom. In the second approach, the mast is modelled using beam±column elements and non-linear cable elements for the guys. The two computer models were evaluated using six existing towers subjected to a variety of load combinations involving dead, wind and ice loads. The results are compared to a simple, but widely used, model in which the tower is modelled as a beam on non-linear elastic supports. Structural response comparisons include guy tensions, member axial forces, face shears, mast displacements and mast rotations.