An assembled monolithic concealed beam hollow two-way floor and its assembly method

Abstract

The invention discloses an assembled integral concealed beam hollow two-way floor and an assembly method thereof. The two-way mechanical properties of the floor are close to each other, and the floor slab is reliably connected to surrounding components, eliminating hidden dangers of plate seam cracking and improving assembly efficiency. The floor includes prefabricated slabs, honeycomb steel beams and cast-in-situ concrete; one side of the prefabricated slab is integrally provided with a number of boxes arranged in a matrix, and the other side surface is surrounded by connecting grooves; the connecting grooves are provided with The reserved bolt holes that run through the prefabricated slab; the honeycomb steel beam is used for the main beam and secondary beam of the steel structure of the floor; The prefabricated slabs are connected and fixed by U-shaped hoops passing through the reserved bolt holes to form joints; the cast-in-place concrete includes the surface layer poured on the box, between the boxes of adjacent prefabricated slabs, and the box The cast-in-place concrete rib is cast between the body and the main beam or secondary beam, and the surface layer and the cast-in-place concrete rib form an integral structure.

Description

technical field [0001] The invention relates to civil engineering and assembly structures, in particular to an assembly integral hidden beam hollow two-way floor and an assembly method. Background technique [0002] Most of the steel structure floors are beam-slab type, occupying a certain floor height, resulting in waste of materials; and the exposed area of ​​steel beams is large, which increases the cost of fire protection and anticorrosion. The bottom plate of the floor deck is a profiled steel plate, and the bottom surface is uneven. It needs to be suspended again, which increases the process and cost. [0003] The existing prefabricated hollow floors are mostly used in concrete frames, but rarely used in steel structures. The main problems are the connection between prefabricated slabs and steel beams, and the joints of prefabricated slabs. If the prefabricated slab is only placed on the flange of the steel beam in the steel structure, it will easily fall off during a...

AI Technical Summary

Problems solved by technology

If the prefabricated slab is only placed on the flange of the steel beam in the steel structure, it will easily fall off during an earthquake, which is unsafe; if the embedded parts of the prefabricated slab are welded to the steel beam, the amount of welding on site will be too large, the construction efficiency will be low, and the quality will not be reliable; the size of the prefabricated slab should not be too large. Wide, otherwise it will be difficult to transport and hoist, and it is easy to crack; the joints between prefabricated panels are easy to crack, and improper handling will seriously affect the use

Prefabricated slabs are generally one-way slabs, and the mechanical properties of the two directions are very different, and the tensile capacity of the distributed steel bars cannot be fully utilized, resulting in waste of materials

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