Precast reinforced concrete convex support body for prefabricated building

Abstract

The invention provides a precast reinforced concrete convex support body for a prefabricated building. The precast reinforced concrete convex support body comprises main beams, precast reinforced concrete convex support main bodies, square column holes, main beam assembling ends and main beam connecting steel plates and is characterized that the precast reinforced concrete convex support main bodies are each in a rhombic shape; the main beams and the rhombic precast reinforced concrete convex support main bodies are integrated into a whole; the lower bottom faces of the rhombic edges of the precast reinforced concrete convex support main bodies are provided with L-shaped concrete protrusions; the square column holes are formed in the middles of the precast reinforced concrete support mainbodies; the rhombic corners are provided with the main beam assembling ends; main beam stress reinforcing bar connecting ends are reserved at the main beam assembling ends; the main beam connecting steel plates are connected to the main beam stress reinforcing bar connecting ends; reinforced concrete is precast between precast reinforced concrete support longitudinal main beams and transverse mainbeams, and the thickness of the precast reinforced concrete support body is larger than or equal to 300 mm; and vertical or transverse connecting bolt holes are reserved at the main beam assembling ends.

Description

technical field [0001] The invention relates to a prefabricated building system technology, in particular to a prefabricated reinforced concrete convex support body for an assembled building; the invention belongs to the divisional application of 201711478025.2. Background technique [0002] In order to adjust the structure of the construction industry, improve the quality of construction, speed up construction, achieve energy conservation and environmental protection, and reduce project costs, the state has proposed to vigorously promote prefabricated buildings and specified specific implementation plans; Wall structure, steel structure and steel-concrete composite structure system are widely used, and the structural system and application field of my country's prefabricated building are clarified; however, the prefabricated building with long-span reinforced concrete frame structure has just started, and ordinary laminated floors are used. And the double T-slab floor technol...

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Problems solved by technology

[0004] In order to promote the development of housing industrialization in China, the inventor applied for ZL201620408935.8 "passive building energy-saving integrated system", which extended the cast-in-place concrete hollow floor to the field of prefabricated buildings through creation and transformation, and solved the overall problem of prefabricated building structures. problems such as poor performance, long-span unidentified beams, oversized components, industrialization of components, controllability of building quality, work efficiency and environmental protection; although these inventions have laid the foundation for the industrialization of housing in my country, there are still long strips of prefabricated assemblies. The unidirectionality of the stress on the cavity slab, the cracks in the gap when two prefabricated cavity slabs are put together, and the limited connection space of the transverse reinforcement of the two-way stressed cavity floor, etc.

[0005] In order to overcome the difficulty of low assembly rate of reinforced concrete prefabricated building structures, the inventor applied for 201710951186.2 "a prefabricated building structure", which increased the assembly rate from less than 40% to more than 70%, passed the national test and acceptance, and ensured structural safety Strong and economical, it has played an active role in the government's promotion of prefabricated buildings; however, the beams, columns, and floor nodes are all in the cast-in-place state. Although the structure is safe, it requires a large number of temporary supports to support the beams, columns, and floor components. There are many steel bar joints at the intersections of beams and beams, and beams and columns, and the steel bar connections are cumbersome and expensive

[0006] At present, there are still many technical problems unresolved in the prefabricated buildings of reinforced concrete frame structure, resulting in high construction costs and hindered promotion; therefore, the inventors have tested and verified the beams, columns, The cast-in-place concrete joint area of ​​the floor slab is creatively changed to a "prefabricated reinforced concrete support body" to enhance the ability of shear force and punching resistance, and the post-cast concrete column and beam joints are scattered in the middle of the column and prefabricated On the assembly end of the main beam set on the rhombus-shaped or triangular water chestnut outside the reinforced concrete support; There are no steel joints at the joints of beams and columns, which greatly reduces the number of supporting rods and further speeds up the assembly speed, improves the quality of the assembly, and reduces the cost of the project; realizes the overall prefabricated building with strong columns and weak beams and then pouring the flange laminated layer on the floor Structural new technology; it is a major breakthrough in the new technology system of reinforced concrete frame structure and frame core tube structure prefabricated building, and has become an urgent need for innovation in the field of prefabricated building technology

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