FRAME MULTI-STOREY BUILDINGS WITH BEAMLESS PREFABRICATED FLOORS MADE OF GLUED WOOD

Abstract

 We  propose  the  design  of  a  transomless  frame  based  on  cross-beam  slabs.  Our 
proposal is to use an original steel connector, which allows us to make a slab from individual elements of small length. The invention belongs to the universal connections of frame elements that can form assemblies at different angles. A model of a 2 x 2 m cross-beam slab measuring 6 x 6 m with a corner support on column consoles was designed. Traditional beams of the beam floor are transformed into contour beams of the slab. When they are supported on the columns, we get a structure that is a slab supported at four corners on circular column consoles. Floors bear operational loads and ensure the rigidity and stability of the building in the horizontal plane by redistributing forces from wind and other horizontal loads. Ensuring spatial rigidity in the vertical plane is simplified by using a combined solution with steel columns and trusses.The peculiarity of the slab is the dome shape of its lower surface.The beamless slab of large-size slabs takes advantage of the spatial operation of the hollow core. The developed contour support beams of the slabs are well suited to accommodate bracing and overhang forces in the corners. To determine the feasibility of the proposed structural solution, two digital models of multi-storey buildings with the same space-planning solution were made. The first one has steel columns and wooden slabs - shells supported on column consoles, the second one has a conventional steel  beam  frame  and  monolithic  reinforced  concrete  floors.  The  results  of  the calculations showed the efficiency of the beamless frame with cross-beam laminated wood slabs.