METHOD FOR RESTORING BUILDINGS WITH A VENTILATED UNDERGROUND AFTER THAWING OF THE FOUNDATION SOILS Russian patent published in 2022 - IPC E02D27/08 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction - to methods for restoring the operational capacity of buildings and structures with a ventilated underground, built on permafrost soils on pile foundations frozen into the ground, which have received uneven deformations as a result of permafrost thaw and partial loss of the bearing capacity of piles. A method for restoring buildings with a ventilated underground and with a high strip grillage that combines vertical pile supports after the base soils have thawed, in which an additional foundation is introduced with additional supports in the form of vertical posts and struts of direct and reverse slope, combining the existing supports. An additional foundation is made in the form of a lower grillage, which is concreted in the formwork on sand preparation, with a thickness not less than the calculated heaving deformation during freezing of the base soils. Additional supports are installed simultaneously with the concreting of the lower grillage, forming a spatial frame structure inside the underground. Pile and additional supports are monolithic in the lower grillage. In the lower grillage between the pile and additional supports, windows are arranged for the subsequent passage of composite piles and embedded parts for fixing the crushing installation, after which a leader well is drilled, where, using the crushing installation, the composite piles are immersed section by section and the loaded piles are monolithic in a stressed state in the upper and lower grillage with monolithic nodes.

EFFECT: increasing the reliability of ensuring the safety and operational suitability of buildings and structures built on a high grillage on piles frozen into the ground, damaged as a result of the thawing of the foundation soils, increasing the economic effect in the restoration of buildings and structures affected by the thawing of the soils, taking into account the acceleration of work, increasing the bearing capacity piles along the lateral surface and reduce the time of freezing of the pile with the ground.

6 cl, 2 dwg