Assembly type long-span building with combined frame structure

Abstract

The invention provides an assembly type long-span building with combined frame structure. The building includes a prefabricated column, a prefabricated convex main beam, a cavity plate member, a longitudinal combined rib beam, a regenerated transverse rib rebar and a combination seam. The building is characterized in that rebars are arranged at the two ends of the prefabricated column in advance;rebars are arranged at the two ends of the prefabricated convex main beam in advance; the reserved rebars pass through a support base formed through connection of the reserved rebars at the two ends of the prefabricated column to form a reinforced concrete combined frame structure. The cavity plate member is composed of a longitudinal reinforced concrete ribbed beam, a transversal reinforced concrete ribbed beam, an empty cavity and a lower flange plate. The cavity plate member is installed on the edge of the prefabricated convex main beam, the combination seam of the cavity plate member doesnot penetrate through a floorslab, and the depth of the combination seam is less than or equal to 50 mm.

Description

technical field [0001] The invention relates to a prefabricated building system technology, in particular to a large-span prefabricated building technology with a combined frame structure. 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 devel...

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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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