METHOD FOR CONSTRUCTION OF UNDERGROUND MULTISTOREY BUILDINGS Russian patent published in 2016 - IPC E02D29/45 

FIELD: construction.

SUBSTANCE: invention relates to construction, specifically to methods of erection of multi-storey underground structures of different purpose by open method, and can be used in industrial construction. Method for construction of underground multi-storey building includes erection of frame structure and installation of pile supports, successive concreting on soil surface of intermediate floors, suspension floors to head parts of supports, development of trench by soil excavation under covering, further lowering of floors along supports throughout height of trench to a height, which corresponds to one phase ground excavation, and fixation of floors on supports. First, along outline of future concrete wall are installed separately standing vertical bored piles-supports, which are then fixed in upper part by horizontal cross-beams to form a frame, and electrohydraulic jacks are installed on them between piles. On soil surface, concreting is carried out in steps at two overlapping in form of round plates along outline of future concrete wall vertical and horizontal formwork, reinforced crossbars, to which there are steel rods, for concreting walls, which is performed by dropping concrete. Between formed concrete wall and fixed stiffeners retained by screw piles, to a concrete wall is suspended gas-inflated rubber-steel cushions with rollers to facilitate sliding down concrete walls, removing soil under formed plates covering, lowering using electrohydraulic jacks. Space between upper and second plate under it is filled with armoured metal hollow spheres, in some of which air is pumped at maximum possible pressure, and in other part a vacuum is created. Lowering of plate and lowering of concrete to form a concrete wall is performed simultaneously. Wall formed after soil excavation at an angle of 25-30° to horizontal is drilled with intended for fastening of steel reinforcement ribs, additional boards metal screw piles, which are additional, have length of 5-10 m and are made with through lengthwise holes for injection under pressure of concrete mix after their connection to each other.

EFFECT: technical result consists in simplification of method while providing its safety.

1 cl, 2 dwg