SHELTER Russian patent published in 1997 - IPC

FIELD: construction engineering. SUBSTANCE: this relates to erection of special structures and can be used in building ground-surface and buried protective structures at various enterprises especially at those of high danger. Protective structures are made of sectional reinforced concrete trough-shaped components ensuring high shock-proof and fire-proof properties. This protective structure has internal box made up of fibre-steel reinforced concrete trough-shaped components and installed on base and trimmed at three sides with layer of plastic material. Placed upon aforesaid box and resting through their flanges are respectively horizontal and vertical trough-shaped components of external contour. Inserted through holes in their walls are wires or separate rods of mild steel for further erection upon them of shock-proof slabs made of fibre-steel reinforced concrete connected with trough-shaped components by loop-like reinforcement protrusions and connecting rods to be welded or wire bunches. Trough-shaped components of internal box are fastened at corners by connecting bolts, vertical trough-shaped components of external contour are fixed in design position by thrust member. Internal longitudinal joints between shock-proof fibre-steel reinforced concrete slabs placed on incline surface are filled with strip of plastic material. Efficiency depends on power-absorption ability of aforesaid structural components of shock-proof protective structure. Structure can protect from shocks, impact and dynamic loads. EFFECT: high efficiency. 1 dwg