Comparative study of standards for the dynamic analysis of a self-supporting tower under wind load

Abstract

The study of methods of analysis for consideration of the wind load is very important in telecommunications towers because they are highly vulnerable structures due to extreme wind actions. In Cuba the analysis of self-supporting towers is carried out as is defined on the wind Cuban code NC-285: 2003 (NC). This code does not present the specifications of the effects of wind on self-supporting towers, for that reason there is a necessity to evaluate its differences with others international codes and standards. The aim of this paper is to compare the element forces and displacements of a selfsupporting towers which were obtained from the application of the analysis methods enclosed in the codes and standards NC, ISO 4354-2009 (ISO), AS/NZS1170.2-2011 (AS/NZ) and EC 3: 2007 (EC3). The results showed that axial forces on elements and displacements of the tower obtained from application of NC were lower than those obtained from application of ISO, AS/NZ, EC3.