Analysis of Guyed Lattice Masts Considering Various Types of Mast Shaft Geometrical Imperfections

The paper covers an analysis of guyed masts as per the second order theory. The influence of various types of mast shaft imperfections was analysed based on the example of a certain 200 m-high lattice guyed mast structure with 3 guy levels. The computations were performed taking into account the mast shaft with sway imperfections, imperfections associated with an offset of structure nodes and bow imperfections. As there are no guidelines concerning imperfections in the current European Standard EN 1993-3-1, the permissible assembly deviation values were taken as the reference point. Based on the obtained results of the analysis some final conclusions and comments have been formulated that may be useful in the design of mast structures.