FIELD: construction.
SUBSTANCE: invention is related to construction, in particular to metal arch. Metal arch is arranged with double-tee section, of double-hinge type. Wall consists of radially corrugated and smooth sections. Wall may consist of radially corrugated sections and radially corrugated sections with stiffness across corrugations, which is larger than in other corrugated sections. Wall may also consist of radially corrugated sections, smooth sections and radially corrugated sections with stiffness across corrugations, which is larger than in other corrugated sections. Smooth sections and radially corrugated sections with stiffness across corrugations, which is larger than in other corrugated sections, are arranged in the range of 0 - 1/3 of span, starting from support units. Their length makes 1-3 heights of wall cross section.
EFFECT: reduced material intensity of arches and higher resistance to outer power actions.
5 cl, 15 dwg
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| ARCH STRUCTURE FORMED OF SHEET MATERIAL WITH COMPOSITE REINFORCEMENT MEMBERS OF CONCRETE ENCLOSED BY METAL SHELL | 1997 |
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