Prefabricated building structure

Abstract

The invention provides a prefabricated building structure, comprising prefabricated columns, a prefabricated raised beam, prefabricated recessed-end rib cavity plate members, a longitudinal combination rib beam, a reconstituted cross rib beam, a combining joint, and a side structural wallboard. The prefabricated building structure is characterized in that each end of each prefabricated column is provided, in advance, with structural rebars; at least one side of each prefabricated column is provided with a reserved hole; a rebar channel for the longitudinal combination rib beam is prefabricatedin the prefabricated raised beam; the reconstituted cross rib beam is formed by connecting cross rib beam rebars between two prefabricated cavity plate members; each prefabricated cavity plate memberis composed of a longitudinal reinforced concrete rib beam, a cross reinforced concrete rib beam, a cavity, and a flower flange plate; the prefabricated cavity plate members are mounted on two sidesof the prefabricated raised beam; the combining joint for the prefabricated cavity plate members has a depth of < / -50 mm; the side structural wallboard is fitted to the outer surfaces of the prefabricated columns and is a self-insulation wallboard.

Description

technical field [0001] The invention relates to an assembled building system technology, in particular to an assembled building structure technology. 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; It is widely used in wall structure, steel structure and steel-concrete composite structure system, which clarifies the structural system and application field of my country's prefabricated building; however, the prefabricated building floor with long-span horizontal structure has just started, and the common laminated floor is used , The lack of establishment of the technical system leads to high cost and ungroundedness, which restricts the development of the prefabricated constructio...

AI Technical Summary

Problems solved by technology

In order to promote the healthy development of housing industrialization in our country, recently, the inventor participated in the largest-scale "fabricated large-span steel structure space without secondary beam" chaired by Tongji University, the School of Civil Engineering and Architecture of Central South University, and the National Tianjin Fire Research Institute in his own production base. cavity floor slab full-scale test", "fabricated large-span non-exposed beam reinforced concrete structure full-scale test", "fire-fighting and smoke exhaust test using prefabricated cavity floor slab" to test the innovativeness, advancement and rationality of the inventor's existing technology performance and safety; the test adopts the multi-span load compression full-scale test of the continuous strip and the full-scale test of the ultimate load loading of the prefabricated floor slab. Surrounding cantilever 1.6m, side length 11.6m, compression area 134.56m 2 , The dynamic load is 2KN, and the actual load is 22KN; the limit crack national standard is 1.5mm, and the actual crack is only 0.5mm; the limit deflection calculated according to the national standard is 168mm, and the actual deflection is 39mm; the prefabricated building has no exposed beam in the reinforced concrete structure through the test Or the safety of steel structures without secondary beams; the test verified that the one-way stressed floor components are changed into two-way stressed floors, and the single simply supported floor components are changed into continuous slab structures; the large-span Floor components combined with joint cracking, fire protection, sound insulation, perennial maintenance, assembly technology and other issues, especially the cost of prefabricated buildings has been reduced by 20%; the full-scale test of the structure has laid a solid foundation for further innovation of prefabricated buildings; however, the test Reveal the law of the internal force distribution of the prefabricated building structure, and under the premise of ensuring the safety requirements of the prefabricated building structure, there is still a lot of room for optimization in the prefabricated building technology

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