| 主权项 |
1. A self-bracing shelter comprising:
a frame and a skin connected to said frame to define an internal space;said frame comprising:
first and second subframes arranged in respective vertical planes, each subframe comprising first and second feet adapted to engage a support surface and a central portion that extends between and interconnects said first and second feet, wherein each of first and second subframes comprises an apex and defines an arch; a ridge beam that extends axially between and interconnects the first and second subframes, said ridge beam located adjacent said apex of each subframe and comprising opposite first and second ends that extend axially beyond the first and second subframes, respectively, such that said opposite first and second ends of said ridge beam are located outside a habitable footprint of a planform defined by said feet of said first and second subframes; a first pair of outer tension members, each tension member of said first pair connected at an outer end to said first end of said ridge beam and each tension member of said first pair connected at an inner end to said first subframe, wherein said respective inner ends of said first pair of outer tension members are connected to said first subframe on opposite lateral sides of said ridge beam at a location spaced laterally from said ridge beam; a second pair of outer tension members, each tension member of said second pair connected at an outer end to said second end of said ridge beam and each tension member of said second pair connected at an inner end to said second subframe, wherein said respective inner ends of said second pair of outer tension members are connected to said second subframe on opposite lateral sides of said ridge beam at a location spaced laterally from said ridge beam; wherein said first and second pairs of outer tension members urge the first and second sub-frames outwardly away from each other; said first and second subframes each comprising a segmented arch subframe comprising: left and right upper linear segments that converge to define said apex; left and right lower linear segments connected respectively to the left and right upper linear segments and that are arranged vertically; and left and right shoulders defined respectively where said left and right upper linear segments join said left and right lower linear segments; wherein:
said inner ends of said first pair of outer tension members are respectively connected to said first subframe adjacent said left and right shoulders of said first subframe; and,said inner ends of said second pair of outer tension members are respectively connected to said second subframe adjacent said left and right shoulders of said second subframe. |
