DEVICE FOR PILE FOUNDATION FOR MACHINES WITH DYNAMIC LOADS AND VIBRATION-SENSITIVE EQUIPMENT Russian patent published in 2020 - IPC E02D27/44 

FIELD: construction.

SUBSTANCE: invention relates to construction and can be used in construction of pile foundations for machines with dynamic loads or vibration-sensitive equipment on any non-rocky soil. Method of pile foundation for machines with dynamic loads and vibration-sensitive equipment includes injection of movable cement-sand mortar into soil base under sole or concrete preparation of grillage through injectors. Non-detachable injectors in the form of perforated pipes are installed along the length in contact zone under sole or concrete preparation of grillage in pre-formed horizontal grooves parallel to each other with equal pitch, wherein ends of injectors are plugged on one side and cement-sand mortar is supplied simultaneously from two sides of grillage wall through outlets of injection pipes located outside grillage, wherein outlet of every adjacent injector is located on opposite side of grillage butt against its lateral sides. End of injection of movable cement-sand mortar is taken by volume of injected cement-sand mortar for inclusion into operation of soil massif under sole or concrete preparation of grillage, and required volume of cement-sand mortar is assigned depending on floor area of grillage. After hardening of the injected solution, the fixed injectors act as horizontal reinforcement of the fixed contact ground zone under the grillage or its concrete preparation.

EFFECT: technical result consists in providing significant reduction to safe level of oscillation of pile foundation for machines with dynamic loads and vibration-sensitive equipment due to the most optimal mode of injecting cement-sand mortar for the ground of the grillage or its concrete preparation, increased service life of machines and equipment, reduction of negative impact on surrounding building structures.

1 cl, 2 dwg