SHELTER Russian patent published in 1997 - IPC

FIELD: construction engineering. SUBSTANCE: this ground surface protective structure relates to special-purpose objects to be built at various enterprises. Shelter is made of prefabricated reinforced concrete trough-like components ensuring high impact-proofing and fire-safety properties. Shelter has internal box assembled from fiber-reinforced concrete trough-like components installed on base and surrounded at three sides with pliable layer on which placed with their flanges down are respectively horizontal and vertical trough-like components of outer contour. Installed on walls of horizontal trough-like components are pliable tubular devices which function as supports for one end of incline trough-like components which by their other end rest on walls of vertical trough-like components of outer contour. Installed atop of incline trough-like components in horizontal position are two upper trough-like components which are interconnected by their walls through pliable interlayer placed between walls and by means of connecting bolts inserted through holes made in walls of trough-like components. Trough-like components of internal box are connected by bolts at corners, and vertical trough-like components of outer contour are fixed in design position by means of thrust member at base. Efficiency of shelter directly depends on energy-absorbing capacity of its structural components under action of dynamic loads and shock waves. Shelter can be disassembled and again assembled at required site close to enterprises or other objects. Assembly and disassembly of shelter are simple and require no special and powerful load-lifting facilities or other machinery. EFFECT: high efficiency. 1 dwg