TUBE BUILDING STRUCTURE Russian patent published in 2004 - IPC

FIELD: building, particularly frames made of steel tubes filled with concrete.

SUBSTANCE: tubular structure comprises steel tubes with concrete cores arranged coaxially and connected one to another and to horizontal bearing beams by main connection unit filled with concrete. Main connection unit is made as three hollow steel cylinders secured one to another by their bases, namely upper, medium and lower cylinders. Height of each cylinder is 0.5 - 1.5 of outer diameter of tubes to be connected. Upper and lower cylinders have outer diameters equal to 0.8 - 0.99 of inner tube diameter, medium cylinder with outer diameter equal to 1.01-1.15 of outer one of lower tube has orifices. Orifice axes are located at middle point along side cylinder wall height to insert ends of horizontal beams into medium cylinder for a distance equal to 0.4 - 0.8 of inner cylinder radius. Beam ends have perforations or slots to connect beam ends one to another by steel members, particularly by retaining ring. Orifices formed in side surface of medium cylinder have threads.

EFFECT: reduced time of frame erection, reduced cost, increased strength and load bearing capacity thereof.

2 cl, 2 dwg