UNIT OF PLATES CONNECTION Russian patent published in 2009 - IPC E04B1/61 

FIELD: construction.

SUBSTANCE: unit of plates connection is intended for reinforced concrete slabs cast over precast joints with the help of precast crossbars. Connection is done after plates have been installed onto metal girders that form permanent shuttering together with plates. Gaps between metal girders and plate are reinforced and embedded creating dowels. Metal girder used is composite girder based on metal strip from rolled steel with unequal corners rigidly fixed along its edges. Corners are installed so that larger sides of corners serve as cantilevers for plates and lap over metal strip. Smaller sides of corners are perpendicular to metal strip. Corners are installed symmetrically relative to symmetry axis of composite metal girder. Axis of symmetry of composite metal girder coincides with axis of symmetry of precast crossbar. In gaps between metal girders and plates there are mutually perpendicular bound frames embedded with unequal width along the whole length of crossbar. Narrower frames are installed between corners along crossbar height. Wider frames are installed above corners closer to edges of plates. Frames create symmetrical figure relative to crossbar axis. Support frame made of wire is located between plates across crossbar. Free ends of support frame rest against smaller sides of unequal corners.

EFFECT: creation of unit capable of bearing high loads, simplification and cost reduction of construction.

4 cl, 3 dwg