A fully precast concrete floor connection structure and design calculation method

Abstract

The invention discloses a fully prefabricated concrete floor connection structure and a design calculation method. The connection structure includes prefabricated concrete floors (1) on both sides, a rear reinforcement frame (2), a rear through longitudinal reinforcement (3) and a post-casting Concrete (4), the prefabricated concrete floor (1) is provided with longitudinal through grooves (11) and multiple vertical through grooves (12) on the side of the connecting side; into the through groove (12); the rear through longitudinal reinforcement (3) is installed in the rear reinforcement frame (2); the post-cast concrete (4) is poured in the longitudinal through groove (11) and multiple vertical through grooves ( 12) in. The invention can significantly improve the in-plane shear resistance, flexural rigidity and bearing capacity of the fully prefabricated floor slab, and ensure the coordination of deformation at the joints of the slab when bearing vertical loads, and can achieve the service performance similar to that of the integral cast-in-place floor. The invention has reliable performance, simple structure, quick construction and environmental protection.

Description

Technical field [0001] The present invention relates to the field of building structural connection structure, in particular, to a full prefabricated concrete floor connection structure and design calculation method. Background technique [0002] As an important part of the overall building structure, the floor is not only assumed vertical load, but also transmits the horizontal load generated by the seismic role and wind load to the anti-side system. Traditional steel-cast-in-place concrete floor exhibits excellent mechanical properties, but there is still a large number of workers in the construction process to conduct on-site template production, steel binding and concrete pouring, etc. There are problems such as cumbersome, high workload, low construction efficiency; In addition, with the shortage of labor, the labor costs are greatly increased; the large-scale live wet operation has caused environmental pollution, which does not meet the development direction of building ind...

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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