| 摘要 |
FIELD: construction.SUBSTANCE: butt joint of assembly reinforced concrete columns with an overlapping includes end portions of the lower and upper columns, mounted on one vertical axis of a reinforced concrete frame with a gap in height, and the overlapping arranged between the front edges of the columns through which bars of a longitudinal reinforcement of the lower column pass through. Overlapping slabs are laid on a thin layer of fine-grained concrete with protruding bars from the lower column, injected by fast-hardening fine grained concrete, which pass through its channels at the fixation of the overlapping slab position on the assembly by means of nuts, screwed on the reinforcement bars and pressing the overlapping to the lower column. Precast reinforced concrete columns have steel centring pads at the ends and a working longitudinal uniform reinforcement of a screw profile, interconnected by couplings screwed at the ends, joining the bars of the working reinforcement in the niche of the upper column with subsequent enclosing of the joint place by cross-clamps and their caulking by fast-hardening fine-graded concrete.EFFECT: increase of reliability, accuracy of installation, reduction of the specific amount of metal.4 dwg |
