ABSTRACT
The Hostynnyi Dvir two-storey building erected in Kyiv at the beginning of the 19th century is complicated in plan and consists of two U-shaped parts. Under the building the metro tunnels pass with trains running on a normal (non-vibration-isolated) track every 2 minutes. The nature of the foundation structures damage indicates that the main cause of its occurrence is an uneven deformation of the foundations base due to the additional soil compaction under dynamic effects. The damage analysis shows that in fact the building is divided into several blocks and has experienced the spatial rigidity reduction. According to the results of the vibrodynamic tests carried out with the use of the Internet of Things during the metro trains movement, the additional vertical dynamic loads on the building foundations up to 1%, on the soil near the building up to 7%, and on the building floor up to 5% from the object own weight were determined. Modelling of the stress-strain state of the “base – foundation – metro” system is performed using the Midas GTS NX software package. The constructed Digital Twin is a three-dimensional model reflecting the actual soils layering and including the subway tunnels structures, foundations and superstructure parts. The building superstructure parts are included in the model for obtaining a more accurate initial stress-strain state for the base taking into account the building spatial rigidity. The obtained calculated acceleration values coincide with the results of vibrodynamic studies at the IoT sensors installation points.
