REINFORCED CONCRETE FRAME OF BUILDING WITH PRECAST AND CAST-IN-SITU HIDDEN CROSSBAR Russian patent published in 2009 - IPC E04B1/20 

FIELD: construction.

SUBSTANCE: invention is related to the field of construction, in particular to reinforced concrete frame of building with precast and cast-in-situ hidden crossbar. Precast and cast-in-situ frame consists of column-crossbar joints and crossbar-plates of hollow flooring, and also ceiling and prefabricated columns. Joints are rigid and grouted under construction conditions. Ceiling is created by hollow plates, bearing and joint hidden crossbars. Crossbars have thicknesses equal to thickness of hollow-core ceiling slab. Precast columns are joined along height with the help of socket joint. Columns have concrete gaps in plane of ceiling for monolithic unit joint, in which bearing and joint crossbars are combined in mutually perpendicular direction. Thin precast joint and bearing crossbars are used as fixed formwork. To create smooth ceiling surface at the border of crossbar-ceiling plate, bearing crossbar has cantilever projections of armature for ceiling slabs resting on them in process of installation.

EFFECT: reduction of frame erection labour intensiveness, manufacturing of frame elements with maximum use of resources of moulding equipment in existing plants for reinforced concrete products making and higher esthetic perception due to crossbar hidden in ceiling.

5 dwg