| 摘要 |
FIELD: building, particularly arched reinforced concrete structures. ^ SUBSTANCE: device has pneumatic form made as air-supported shell of forming members, rigid semi-arches connected one to another, support rings and rigid end arches. Forming members are made as at least three intersecting surfaces of half-angle truncated cone shape facing structure interior by major bases thereof and connected one to another. Apexes of above surfaces are located in common plane and spaced equal distances from center of half-angle cone surface generator axes intersection. Vertex angles of above surfaces are equal one to another. Angles between axes of half-angle cone surface generators are the same and equal to 360o/n, where n is number of half-angle cone surfaces. Shape of semi-arch corresponds to that of intersection line of half-angle cone surfaces to be connected. Each forming member has technological end caps of semicircle shape in front plane, wherein semicircle radius is equal to semi-arch radius. Technological end caps are of circular segment shape in top plane with chord length equal to two arch radiuses and height equal to half of arch radius. Technological end caps are of semicircle shape in side plane, wherein semicircle radius is equal to half of arch radius. ^ EFFECT: reduced size, possibility to erect above structure in constrained space. ^ 3 dwg |
