Steel structure fabricated cavity floor slab

Abstract

The invention provides a steel structure fabricated cavity floor slab. The steel structure fabricated cavity floor slab comprises a sectional steel column, a steel beam being in the shape like a Chinese character 'wang', cavity plate members and joint seams. The steel structure fabricated cavity floor slab is characterized in that the steel beam being in the shape like the Chinese character 'wang'is composed of an upper flange plate, a middle flange plate or a supporting plate, a lower flange plate and a web plate; the widths of steel beam flange plates being in the shape like a Chinese character 'wang' are not equal; each cavity plate member is composed of a reinforced concrete longitudinal rib beam, a reinforced concrete transverse rib beam, a ribbed steel wire mesh and a concrete mortar lower flange plate containing a metal mesh; the ribbed steel wire mesh is an expanded ribbed steel wire mesh or a fish-scale ribbed steel wire mesh; a mesh body of the ribbed steel wire mesh is a ribbed metal mesh, and the ribbed steel wire mesh is internally provided with a cold-drawn mesh supporting body or a foamed cement block supporting body; the cavity plate members are mounted on horizontal planes of the middle flange plate of the steel beam being in the shape like the Chinese character 'wang' or upper sections of supporting plates; the joint seams of the cavity plate members do not penetrate through the cavity plate members; and the height of the transverse reinforced concrete rib beam at the two ends of each cavity plate member is less than the heights of other transverse reinforced concrete rib beams.

Description

Technical field [0001] The invention relates to a fabricated building system technology, in particular to a steel structure fabricated cavity floor technology. Background technique [0002] The country vigorously promotes prefabricated buildings and clarifies specific implementation plans; and requires wide application in reinforced concrete frame structures, reinforced concrete frame shear wall structures, steel structures, and steel-concrete composite structural systems, clarifying the prefabricated building structures in my country System and application areas; however, the horizontal structure of the prefabricated building floor has just started, and the use of ordinary laminated floor slabs, the technology has defects, the cost of prefabricated buildings is too high, and the lack of grounding has hindered the country's promotion of prefabricated buildings. [0003] For example, the inventor’s ZL200410082381.9 "a hollow small ribbed floor" and ZL200820126232.1 "a cast-in-situ st...

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

Images