BUTT JOINT IN MONOLITHIC REINFORCED CONCRETE GIRDERLESS FRAME Russian patent published in 2010 - IPC E04B1/38 E04B5/43 

FIELD: construction.

SUBSTANCE: butt joint includes pillar, coverage plate and capital arranged on plate. Reinforcement frame of plate is arranged in the form of upper and lower grids. Capital is reinforced with grid and longitudinal rods inclined towards plate and joined by transverse rods. Lower ends of longitudinal rods of capital are bent aside from pillar and are installed in plate. Capital is arranged with central part in the form of expanded pillar equipped with stiffening ribs solidly joined to them. Ribs are radially arranged relative to central axis of pillar in longitudinal, transverse and diagonal directions. Ribs are reinforced with spatial frames from bent longitudinal rods that form ribs contours and embrace central part of capital. Ribs are also reinforced with reinforcement grids installed along side faces of ribs and in expanded part of pillar. Lower bent ends of spatial frames of ribs are installed between lower and upper grids of plate and are joined with them. Middle parts of spatial frames of ribs are arranged in capital at different levels relative to each other.

EFFECT: increased bearing capacity, rigidity of butt joint and crack resistance of coverage plate.

2 cl, 4 dwg