Composite steel girder and concrete slab ceiling - has angled steel profiles as continuous connectors screwed to girders

摘要

The composite girder floor-ceiling structure comprises steel girders and prefabricated concrete slabs, with their abutting joints in the main line of support set above the axes of the girders, with subsequently detachable connection by highly rigid prestressed screws. These have nuts (4) which are accessible via cutouts (9) in the concrete slabs (2, 3). Angled steel shaped sections (6, 7) are used as continuous connecting and thrust-introducing elements. These form the flat bottom slab edges, and are screwed to the steel girders (1). These shaped-section units may lie with the shank containing the screw holes (10) parallel to the steel girders top flange. The other shank lies at right angles to the first, forming the lateral enclosure of the slabs.