The article analyzes design solutions of foundations on permafrost soils, their advantages and disadvantages. Innovative design solutions that increase the energy efficiency of buildings are proposed. Examples of innovative foundations of platform type are given. Spatial ventilated foundations are less sensitive to soil deformation. The construction of such a foundation can be made of various materials such as reinforced concrete, metal and timber. A spatial foundation platform based on timber is proposed as one of the innovative examples, which is a promising constructive solution of foundations for construction in the Arctic regions. Wood has a small coefficient of thermal conductivity, which significantly increases the energy efficiency of the structure as a whole. Due to prefabrication of timber structures, the speed of construction is increased. Platforms can have solutions in the form of: system of cross beams, structural plates, plate-rod structure, as well as in the form of shells and folds. Regardless of the design solution, the spatial foundation platform is prefabricated.

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In connection with degradation of permafrost soils, the issue of designing and building foundations is acutely raised, taking into account the possible thawing of the soil at the base of structures. A spatial foundation platform is less sensitive to deformations of the foundation soil due to the integral work of the structure, compared to other foundations. For this and a number of other reasons, the use of the platform is promising. As the main structural material in spatial foundation platforms, it is advisable to use engineering wood, because of its advantages in comparison with reinforced concrete and metal. The article presents some results of calculations of the foundation platform of the folded type. The COMSOL Multiphysics software package simulates the process of thermal degradation of the soil under the foundation platform caused by an increase in air temperature. As a result, the soil warming zone was established, which is necessary for the design of the foundation platform taking into account changing boundary conditions. Preliminary conclusions are made about the influence of the degradation of the frozen base on the stress-strain state and the structure of the foundation platform of the folded type.