A fully precast concrete floor connecting node

Abstract

The invention discloses a fully prefabricated concrete floor connection node. The connection node comprises: a prefabricated concrete floor slab, a plurality of groups of connection grooves are preset at intervals on the connection side, and the connection grooves are composed of a horizontal groove on an upper board surface, a horizontal groove on a lower board surface and a side surface. It is composed of vertical grooves, and the horizontal grooves on the upper board surface and the horizontal grooves on the lower board surface are connected through the side vertical grooves; the connecting pieces include embedded steel connecting pieces and connecting steel plates. Steel chute, the steel chute at least allows the adjacent precast concrete floor slabs to produce lateral sliding; the grouting material is poured in the connection node after the adjacent precast concrete floor slabs are spliced. The connecting node of the invention can significantly improve the in-plane shear resistance, bending stiffness and tensile bearing capacity of the fully prefabricated floor slab, and ensure the deformation coordination of the slab joints when bearing vertical loads and explosion impact loads. The invention relates to a fully prefabricated assembled floor slab, which has the advantages of reliable performance, simple structure, rapid construction, green environmental protection and the like.

Description

technical field [0001] The invention relates to the technical field of building structure connection structures, in particular to a connection node of a fully prefabricated concrete floor. Background technique [0002] As an important part of the overall building structure, the floor slab not only bears the vertical load, but also transmits the horizontal load generated by the earthquake and wind load to the anti-side system. The traditional steel-cast-in-place concrete floor shows excellent mechanical properties, but a large number of workers are still required to make on-site formwork, steel bar binding and concrete pouring during the construction process, and there are problems such as cumbersome construction, large workload and low construction efficiency; In addition, with the shortage of labor, the required labor costs have greatly increased; large-scale on-site wet operations have caused environmental pollution, which is not in line with the development direction of co...

AI Technical Summary

Problems solved by technology

However, limited by the size of the floor slabs during transportation, there are inevitably joints between adjacent prefabricated floor slabs

The physical connection joints between fully precast floors affect the in-plane shear resistance, bending stiffness and bearing capacity of the floors, resulting in a significant decrease in the integrity of the floors; in addition, under the action of vertical loads, the deformation of the fully precast panels on both sides of the joints is uncoordinated, etc. problems, leading to damage to the decoration at the joints, affecting the comfort and aesthetics of use

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