Geotechnical risks in the reconstruction of buildings and structures affected by explosions

Abstract This article deals with the actual problem of geotechnical risks arising during the restoration of buildings damaged by explosions in the southeastern and southern parts of Ukraine on subsiding loess soils with a layer of significant thickness. The authors argue that after the destruction of building structures (roofs and floor slabs) there is base saturation by atmospheric and sewage waters as well as firefighting waters. This leads to soil loosening, a sharp decrease in deformation properties, which, as a result, can lead to significant settlements and failures of building structures, and in the case of soil freezing, frost heaving is added. To develop recommendations for preventing such situations, we have carried out special studies that indicate the need to perform control observations and geotechnical tests of soils after their compaction, as well as control calculations of the stability of building structures in all cases. Taking into account the mass of restoration works, it is recommended to develop typical solutions for restoring soil bases and foundations on disturbed loess soils and ensuring the required spatial stiffness of building structures.