Особливості реакцій елементів безригельного залізобетонного багатоповерхового каркасу на сейсмічні впливи за результатами прямого динамічного розрахунку

Abstract

The work is devoted to the study and analysis of approaches to the choice of parameters and the number of estimated accelerograms necessary and sufficient to perform the calculation of buildings and structures for seismic impacts by direct dynamic method. The main provisions of the calculation of buildings and structures for seismic impacts by direct dynamic method in accordance with the requirements are considered in the work DBN B.1.1-12: 2014 “Construction in seismic regions of Ukraine”, European Standards DSTU-N B EN 1998-1: 2010 (Eurocode 8), regulatory documents of other countries and recommendations of current publications on this issue. The object of research is a 15-storey reinforced concrete residential building, designed according to the scheme of a monolithic bezelless frame for construction in the seismic region of Ukraine (Odessa) with the intensity of seismic impacts 7-8 points. On the basis of the analysis of the results of the test calculations of a three dimensional computer model of a non-rigid frame of a multi-storey reinforced concrete building, using the LIRA software complex, the parameters of the stress-strain state of structures and the seismic reactions under the influence of a set of accelerometer were compared by the method of direct dynamic calculation.