Calculation for progressive fracture of a plate on an elastic base

The article discusses the results of calculations of a reinforced concrete foundation slab on an elastic base. A research methodology and an algorithm for calculating avalanche-like plate destruction using a computer in the Lira CAD software package are presented. The analysis of each type of load and the determination of the most influen-tial is carried out. Progressive destruction occurs due to the accumulation of local damage in the slab due to internal structural defects. The reasons for the weakness may be design errors or construction technology. A search has been performed for the most dangerous variant of the development of local destruction with a minimum number of switched-off elements due to internal defects. Destruction due to internal defects leads to overvoltage in other elements, increased vertical movements and pressure on the ground, which leads to a domino effect. The sizes of the critical area for three cases are determined. The first case is the location of the column inside the foundation slab, the second is at the edge and the third is at the corner of the slab. The slab was analyzed in three cases when all loads were applied to the founda-tion. The final stage of the analysis is the addition of the building's frame to the foundation in order to take into account its impact during progressive destruction.