The study was aimed at assessing the deformability of a weak water-saturated clay base reinforced with a group of sand piles in the form of a continuous pile field, when they are jointly deformed under load. Existing studies consider the interaction of free-standing soil piles with the surrounding soil, methods for their calculation, without taking into account the joint operation of a group of piles in a deformable soil massif. The main research results were obtained in the form of new experimental data on the operation of a group of sand piles during their joint deformation with weak water-saturated clay soil massif under a stamp. The significance of the results obtained for the construction industry lies in the fact that the experimental data presented can be used in further theoretical studies to develop a calculation model that allows taking into account the peculiarities of the interaction of sand piles in a pile field with each other and with the surrounding soil massif and are of practical value.

No abstract

Technical solutions for the reconstruction of the building of the Shamovskaya Hospital, an architectural monument built in 1907-1910, are highlighted in Kazan. The reconstruction involves the construction of a 4- storey underground extension to the building. The implementation of the developed architectural solutions revealed a number of problems associated with ensuring the stability of the foundation when developing a deep pit in the immediate (0.5 m) proximity to the building. The authors propose technical solutions to strengthen the foundations of the existing building of the Shamovskaya Hospital, as well as the structure of the retaining wall.