INVESTIGATION OF THE DYNAMIC CHARACTERISTICS OF A MULTI-STORY BUILDING WITH A POLYMER CONCRETE FRAME

Abstract

Formulation of the problem. An urgent problem in construction is the development and introduction of new types of structural materials with improved characteristics: high strength, resistance to aggressive environments, frost resistance, etc. One of these materials is polymer concrete. Polymer concretes can be effectively used in modern construction in the manufacture of monolithic elements of structures, such as wall panels, slabs, columns of frame buildings. The purpose of the work is to study the dynamic characteristics of a multi-story building with a polymer concrete frame under the action of seismic loads. Method. Dynamic calculations were carried out using the finite element method in the LIRA−CAD software complex. Scientific novelty. New analytical formulas have been obtained, which allow an approximate estimation of the dimensions of structural elements of polymer concrete buildings. It was determined how changes in the properties of the frame material affect the weight of the building, the frequency of natural oscillations and displacement under the action of seismic loading. Practical significance. The results of the work make it possible to perform design calculations related to the dynamic properties of multi-story buildings with a polymer concrete frame. Conclusions. The use of polymer concrete for the construction of frames of multi-story buildings allows to reduce the cross-sectional dimensions of structural elements, reduce the weight and material consumption of buildings.