| 摘要 |
A bunker construction comprising: a series of generally curved, precast concrete arch elements, each arch element having a top end, a bottom end and generally parallel, spaced side surfaces; a footing with an elongate depressed key way for receipt of the bottom end of the arch elements; a second footing generally parallel to and spaced from the first footing, said second footing also including an elongate depressed key way generally parallel to the first footing elongate key way for receipt of the bottom end of the arch element; a series of cast-in-place footing blocks which interconnect the reinforcement bars of the arch elements with the reinforcement bars of the two footings; pairs of the arch elements having their top ends abutting along a crown line generally parallel to the footing channels with the bottom ends of each arch element positioned in a footing channel, said pairs of arch elements arranged side by side to form a generally semicircular roof of an enclosure; a vertical back plate forming a back side of the enclosure; a vertical front plate forming the front side of the enclosure, said front plate having first and second lateral sides; a plurality of precast panels, each panel having a back side, said panels arrayed as extensions of the lateral sides of the front plate; a plurality of mechanically stabilizing elements attached to the back sides of the precast panels; and compacted soil, at least in part, frictionally engaging the mechanically stabilising elements, said compacted soil entombing, at least in part, the arch elements and forming a mechanically stabilized structure over the enclosure.
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