The aim of research is to consider a possible calculation principle for analyzing the strain-stress state of water-conducting structures taking into account seismic influences. The calculation for determining the strain-stress state of water-conducting structures, taking into account seismic actions, was performed in the STARK ES software package version 2017. With the help of STARK ES, linear and non-linear static calculations, calculations for free and forced oscillations, for stability, for spectral analysis of the stiffness matrix and limiting rigid plastic analysis were performed. The calculation for the free oscillations was carried out taking into account the dynamic properties of the foundation at the standard values of the construction materials densities, as well as the analysis of contribution of the natural oscillations modes. Calculation for seismic loads of the strain-stress state of water-conducting structures along the first direction is performed by a linear-spectral method. As a result of calculation and analysis, pseudo-static loads corresponding to the first direction of the seismic action are formed. In order to determine the strain-stress state of the structure from the maximum calculated earthquake, a dynamic calculation in the time domain was performed, the result of which was the construction of a three-component accelerogram. For a valid analysis of water-supply structures, a checking calculation has been performed, taking into account the inertial forces from the action of the project earthquake and checking the structures from the forces obtained as a result of the maximum design earthquake taking into account the attached mass. The developed calculation algorithm allows to ensure the proper reliability of the strain-stress state of water-conducting structures.
Key words: water-conducting structures, seismic loads, free oscillations, design model, ground base, strength, reliability.
