DYNAMICITY COEFFICIENT REFINEMENT FOR INTERMEDIATE SUPPORT Р1106 UNDER THE ACTION OF THE PULSATION COMPONENT OF THE WIND LOAD
In the paper is defined a dynamic calculation of the steel i ntermediate overhead power transmission line support P110-6 (OHTL) 110 kV to action pulsation component of the wind load. The purpose of dynamic calculation of lattice overhead line supports to the wind influence is an analysis of steady-state oscillations foothold in wind flow. In this case, the characteristics of nodal displacements, internal forces and stresses are determined in finite elements (lattice and belts) separately from the effects of moderate and pulsation components of the wind load. The technique and results of the dynamic analysis of the equivalent stiffness rod are shown. Paid attention to the main problems that may arise during the transition from the spatial model of the support to the rod with equal strength section. Considering a number of issues related to clarifying the definition of the dynamicity coefficient. On the basis of the calculation and generalization of the results carried out a detailed comparison of the sections' dynamicity coefficients for the intermediate support with dynamicity coefficients of the equivalent stiffness rod under the action of pulsation component of the wind load.