PREFABRICATED REINFORCED CONCRETE FORE SHAFT OF MULTIPLE APPLICATION Russian patent published in 2017 - IPC E02D17/04 

FIELD: construction.

SUBSTANCE: invention can be used in the construction of underground structures such as "wall in the soil", namely for arranging a fore shaft used while executing a monolithic trench "wall in the soil". The prefabricated reinforced concrete fore shaft consists of prefabricated reinforced concrete elements of the L-shaped section, connected by means of embedded metal plates. The fore shaft elements are connected by means of at least two keys engaged by toothings, the keys being reinforced. On the upper edges of the prefabricated fore shaft in the same plane with the concrete surface, metal embedding angles are mounted, which are anchored in the concrete.

EFFECT: increasing the stiffness, bearing capacity and reliability of the interface nodes of the prefabricated fore shaft elements, reducing the labour costs, improving the structure installation quality, ensuring its durability and maintainability, which guarantees frequent use of the fore shaft structure and significantly reducing its cost.

9 cl, 2 dwg