Method for soil base stabilization using the thermally controlled spatial reinforced concrete foundation platform in the permafrost soil

Introduction. As a result of the global warming, the thawing of permafrost soils in the northern regions occurs and leads to naturally increasing wind and snow loads on the buildings, structures, and their foundations. Snow accumulations create a heat-insulating layer preventing the soil freezing in the cold period of the year and moisturize the soil in the warm period, which leads to the deformation of the support structures of buildings and civil engineering works.

Aim. The study aims at the advancement of the spatial reinforced concrete foundation platform of a residential building on the permafrost soil by providing the direct cooling of the lower reinforced concrete slab of the foundation platform using the system of automatic control, as well as at the development of the thermally controlled shell of reinforced concrete foundation platform with the possibility of the resistance to wind currents and prevention of the massive snow transfer into the ventilated underfloor space.

Methods and materials. The system of automatic control of the soil cooling process due to the direct cooling of the lower reinforced concrete slab of the foundation platform was studied using the Arduino Uno printed circuit board.

Results. Based on the used equipment, the block diagram of the experimental setup was developed for recording variations in the air and permafrost soil temperature. In order to study the feasibility of the system for automatic control of the soil cooling process due to the direct cooling of the lower reinforced concrete slab of the foundation platform, a model was created and implemented in the SimInTechs environment for the dynamic modeling of technical systems.

Conclusions. As a result, the authors proposed a new technical solution represented by the thermally controlled shell, made of laminated timber in the form of a highly industrialized module forming the enclosed space with the reinforced concrete slabs. In addition, all laminated timber panels, installed with the possibility of resisting to wind currents and preventing the snow transfer, contain the electrically driven adjustable louvered grilles. The spatial reinforced concrete foundation platform on permafrost soil is patented.

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