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 device pile foundation for machines and vibration-sensitive equipment involves injection of movable cement-sand mortar into soil base under sole or concrete preparation of grillage through introduced therein injector. Non-detachable injector in the form of a serpentine perforated pipe is installed with its branches along the length in the contact zone under the sole or concrete preparation of the grillage in a pre-formed snake-like horizontal groove. One end of the injection pipe is plugged, and the second end is connected to the pipe vertical outlet, through which cement-sand solution is supplied under pressure. Vertical pipe outlet is located beyond the grate boundary to their side surface. End injection of cement-sand mortar is taken by volume of injected cement-sand mortar for inclusion in operation of soil massif under sole or concrete preparation of grillage, and required volume of cement-sand mortar is assigned depending on area of bottom of grillage. After hardening of the injected solution, the non-detachable injector acts as horizontal reinforcement of the fixed contact ground zone under the grillage or its concrete preparation.

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

1 cl, 2 dwg