FIELD COLLAPSIBLE MODULAR FORTIFICATION Russian patent published in 2021 - IPC E04H9/16 

FIELD: fortification construction.

SUBSTANCE: invention relates to field fortifications erected with the engineering equipment of defensive positions and areas of concentration of troops. The design elements allow them to be used to create various protective structures (dugouts, shelters, command posts, etc.). The technical result: reducing labor costs, ensuring the protection of equipment and people in the structure when one or more modules are hit, reducing the construction time of the structure. The field collapsible modular fortification structure consists of the main and emergency entrances formed by the blocks of the entrance group, the blocks of coupling and the frame of the structure, made of three-dimensional concrete blocks united by prestressed composite reinforcement, for which channels and recesses are formed in the three-dimensional concrete blocks, when they are manufactured at the factory, for the passage of prestressed reinforcement; volumetric concrete blocks additionally have grooves at the junctions with other blocks, on one side of the block a sealing gasket is installed in the groove, which ensures the tightness of the structure at the joints. The structure is equipped with modules formed from foundation slabs, slabs and arches of the coating, combined with the main modules of volumetric concrete blocks, while the volumetric concrete blocks have additional vertical channels and recesses for passing prestressed reinforcement, and are also equipped with plugs on unused openings of the entrance group blocks and interface blocks, protective-sealed doors installed at the entrance and exit of the module.

EFFECT: reducing labor costs, ensuring the protection of equipment and people in the structure when one or more modules are hit, reducing the construction time of the structure.

1 cl, 20 dwg