METHOD TO CONSTRUCT BUILDINGS, STRUCTURES ON UNEVENLY COMPRESSIBLE SOILS Russian patent published in 2013 - IPC E02D3/12 E02D27/34 

FIELD: construction.

SUBSTANCE: method to construct preferably high and high-rise buildings and structures on unevenly compressible soils, according to which, after erection of another group from one or several floors of the building, they measure subsidence of foundations, average inclinations of the upper slab above this group of floors and average inclinations of upper slabs above all previously erected groups of floors. On the basis of measurement results and their analysis they decide on deformations of the base and strain stress behaviour of the building at the moment of measurements and until completion of the building, and also on the necessity to impact the soil or the foundation. At first the foundation is erected as designed not for a full load from the building, but for its part, for instance, from the half of the building, in process of erection of this part of the building they measure deformations of foundations and inclinations of slabs, they are used to assess actual characteristics of soil deformability, strain stress behaviour of the building at the moment of measurements and for its completion, and also the necessity to increase the bearing capacity of foundations. Afterwards, if necessary, works are performed to increase the bearing capacity of the foundations by means of increasing of foundation size, strengthening of soils under foundations, for instance, by means of injection of setting solutions, addition of a solid reinforced concrete board to the previously erected foundations, or pressed, screwed or bored piles. The bearing capacity of foundations is increased only in that part, that volume and at that level of height of the constructed building or structure, which provide for safety and permissible level of building deformations until its completion.

EFFECT: increased accuracy of assessment of soil compressibility characteristics in a foundation base in process of erection of a building, a structure, increased validity of analysis of strain stress behaviour of a structure during erection and upon completion of construction, reduced labour intensiveness.

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