PREFACED SPATIAL REINFORCED CONCRETE FOUNDATION PLATFORM ON PERMAFROST SOIL Russian patent published in 2022 - IPC E02D27/35 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction, in particular, it can be used in the construction of the foundation of multi-storey buildings or structures with natural ventilation and preservation of permafrost soil by automatically controlling the process of soil cooling. The prefabricated spatial reinforced concrete foundation platform on permafrost soil is temperature-controlled, contains interconnected upper and lower slabs, which are connected by diagonal or non-braced reinforced concrete trusses or beams, cross connections are installed between the trusses or beams in the transverse direction, and a ventilated wall is formed between the upper and lower slabs. a ventilated underground with a temperature-controlled function and an air temperature sensor installed in it in all directions, while along the perimeter the foundation platform contains enclosing wooden glued panels that form a closed space with the indicated reinforced concrete slabs, and all wooden glued panels have built-in adjustable louvered grilles with an electric drive for their movement, which is associated with an automatic control system for the cooling of permafrost. Adjustable louvered grilles are made in two rows, respectively, with vertical and horizontal arrangement of their lamellas and with the ability to perceive wind currents and prevent snow transfer. The system for automatic control of the cooling process of permafrost comprises a sensor for the angular position of the vertical plane of the lamellas and a sensor for the angular position of the horizontal plane of the lamellas installed on the respective lamellas. The control unit that generates the control signals is made in the form of a logical fuzzy controller, which contains a phasifier with three inputs, a processing unit and a dephasifier connected in series with each other. The sensor of the angular position of the vertical plane of the lamellas is connected to the first input of the fasifier, the sensor of the angular position of the horizontal plane of the lamellas is connected to the second input of the fasifier, the ambient temperature sensor is connected to the third input of the fasifier, and the fasifier, which is a converter that provides the conversion of the initial data from the mentioned sensors into linguistic values variables, is connected with the processing unit that implements the fuzzy inference procedures on the set of production rules that make up the knowledge base of the control system, and generates output linguistic values for the associated defuzzifier, which ensures the translation of linguistic values into exact values of the calculation results and generates control signals supplied for the impact to an electric drive connected to the lamellas of the vertical and horizontal planes of double-row louvered grilles to reduce current errors to zero.

EFFECT: reducing the duration of the process of freezing permafrost soil in natural conditions and preventing heavy snow transfer into the ventilated underground of the building by increasing the efficiency of the device for automatically controlling platform elements while generating more accurate control signals that provide optimal conditions for the cooling process.

1 cl, 3 dwg