| 摘要 |
FIELD: construction.SUBSTANCE: reinforcement bar of periodic profile consists of core with circular cross-section, and with inclined transverse ribs of constant height on surface. Pitch of transverse ribs t is determined on condition of providing anchoring disturbance by achieved limit of physical and mechanical properties of concrete under working areaswhere t is pitch of transverse ribs; b is upper part width of rib, h is height of rib; Ris prism concrete strength; Ris ultimate compression strength of concrete; R is cube concrete strength; Ris ultimate shearing strength of concrete.EFFECT: pitch of transverse ribs is determined on condition of providing anchoring disturbance due to destruction of concrete support cylinders under working areas of transverse ribs, when prism strength R, or ultimate compression strength of concrete R, or cube concrete strength R is achieved, depending on type of reinforced concrete structures.1 cl, 3 dwg |
