Probabilistic analysis of elevated steel silos for seismic resistance

Abstract

Abstract The article is devoted to the calculation of elevated steel silos for seismic actions. The purpose of the study is developing methods for estimation of reliability function of the elevated steel silos under seismic action, on the basis of which the authors obtained an analytical expressions suitable for engineering analysis. The spectral technique for determining seismic actions is used, as well as methods of probability theory and mathematical statistics. The steps are formulated for determining the reliability function of structures of elevated silos, taking into account the probabilistic nature of geotectonic excitations and stochastic properties of the material of structures. The dynamic response of elevated silos is analyzed by varying the direction of the seismic action. The methods proposed in the article and the formulated results can be applied both for direct probabilistic analysis of elevated steel silos and for codification seismic actions within the framework of the spectral technique.