REINFORCING CAGE ( VARIANTS ) Russian patent published in 2002 - IPC

FIELD: construction industry, manufacture of bearing, predominantly cellular, concrete bent articles. SUBSTANCE: reinforcing cage can be produced in the form of rod girder with belts and bent zigzag web. Bends of 100-170 degrees lying in one plane are made on one or both belts. Bending radius of rod is 2.5-12.0 of its radius. According to second variant reinforcing cage coming in the form of rod girder has angle braces of different length which horizontal projections correspond to relation , where X₁ is length of horizontal projection of i-th angle brace, cm; I is ordinal number of angle brace counting from base section to center of span of cage, I = 1, 2, 3 and so on; H is thickness of reinforced article, cm; N_p is maximum possible strain in rod of which angle brace is made, kgf; L is truss span ( distance between base sections of reinforced article ), cm; Q₀ is transverse force in base section of cage, kgf; y is distance from base section to start of i-th angle brace of cage. EFFECT: reduced usage of materials, diminished labor input and decreased power consumption. 9 cl, 12 dwg