Mezhynska I. Calculation and design of mobile net guyed masts taking into account characteristic defects and damages

In the dissertation results of an extensive analysis of mobile net guyed masts are presented. The researches comprises the investigation of existing mobile net guyed masts, laboratory studies of wind effects due to different building shapes at bottom of guyed masts, numerous studies of the stress-strain state of guyed mast's main elements. A method for investigation procedure of mobile net guyed masts is developed. By applying this method the most widespread global and local defects and damages of mobile net guyed masts are received and their quantitative characteristics are obtained. The static calculation method taking into account the design and the requirements for technical equipment is improved. The wind speed values over building surface are experimentally obtained. The wind pressure calculation method taking into account the interference effect is developed. Additionally a stress-strain calculation method incorporating the presence of global imperfections is developed. Permissible values of imperfections are established. Based on the results recommendations for structural design solutions for mobile net guyed are made.