Full-prefabricated concrete floor slab connecting joint

Abstract

The invention discloses a full-prefabricated concrete floor slab connecting joint which comprises a prefabricated concrete floor slab, a plurality of sets of connecting grooves are preset in the connecting side at intervals, each connecting groove is composed of an upper plate face horizontal groove, a lower plate face horizontal groove and a side face vertical groove, and the upper plate face horizontal grooves communicate with the lower plate face horizontal grooves through the side face vertical grooves; the connecting piece comprises a pre-embedded steel connecting piece and a connecting steel plate, a steel sliding groove perpendicular to the connecting side direction is formed in the pre-embedded steel connecting piece, and the steel sliding groove at least allows the adjacent prefabricated concrete floor slabs to transversely slide; and the grouting materials are poured in the connecting joints after the adjacent prefabricated concrete floor slabs are spliced. According to the connecting joint, the in-plane shear resistance, the bending rigidity and the tensile bearing capacity of the fully-prefabricated floor slab can be remarkably improved, and deformation coordination of slab joints is guaranteed when vertical loads and explosive impact loads are borne. The full-prefabricated assembly type floor slab has the advantages of being reliable in performance, simple in structure, rapid in construction, environmentally friendly and the like.

Description

technical field [0001] The invention relates to the technical field of building structure connection structures, in particular to a fully prefabricated concrete floor connection node. 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 lateral system. The traditional steel-cast-in-place concrete floor slab exhibits excellent mechanical properties, but a large number of workers are still required to perform on-site formwork making, steel bar binding and concrete pouring during the construction process, which has problems such as cumbersome construction, heavy workload, and low construction efficiency; In addition, with the shortage of labor force, the required labor cost has greatly increased; large-scale on-site wet operations cause environmental pollution, which is not in line with the development directio...

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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