Structural system for precast-monolithic frames of residential and public buildings made of industrial panel-frame elements

Due to the increasing types of special impacts on buildings and structures, which often have a dynamic nature, there is a need to improve structural systems to ensure protection against such impacts. Reducing the weight of load-bearing structures of building frames and increasing the static indeterminacy of structural systems are among the effective methods of protection not only under seismic conditions but also during special and emergency impacts. As part of addressing this issue, the article proposes a new rapidly erectable structural system for residential and public buildings, made from industrialized panel-frame elements in a precast-monolithic configuration. In this system, the building frame is assembled from precast reinforced concrete structures of two types: panel-frames in the form of inverted U-shaped elements and L-shaped industrially manufactured elements. The connection of these structures on the construction site into the building frame, within the plane of the panel-frames, is carried out using two types of platform joints and monolithic embedding of the upper parts of the precast panel-frame elements’ beams together with multi-void slabs. In the orthogonal plane of the panel-frames, the frame is formed by monolithic tie beams and multi-void floor slabs. The conducted assessment of the mechanical safety of the proposed structural system demonstrated its high resistance to progressive collapse under special impacts. A comparative analysis of technical and economic indicators, such as material consumption, cost, and transportation expenses, revealed significant advantages over buildings constructed using traditional panel systems.