Fabricated type cavity board for stress island cavity floor system

Abstract

The invention provides a fabricated type cavity board for a stress island cavity floor system. The fabricated type cavity board is a concrete prefabricated member and comprises longitudinal ribs, end exposing devices for transverse short ribs for bidirectional loading, cavity hole forming components, lower flange plates, ribs or locally-exposed stirrups of the ribs, and stress island reserved corners. The fabricated type cavity board is characterized in that the two ends of each longitudinal rib of the fabricated type cavity board are exposed; according to the end exposing devices for the transverse short ribs, the ends of the transverse short ribs are temporarily wrapped by vulnerable light materials, so that transverse ribs of the fabricated type cavity board are locally concave; five faces of each cavity hole forming component are located in the cavity board, and the upper surfaces of the cavity hole forming components are exposed; the lower flange plates are compounded with the bottom surfaces of the cavity hole forming components or anti-cracking steel meshes; and according to the stress island reserved corners, a stress island space which is larger than 0.18 mm2 is reserved when the fabricated type cavity board for contact columns is manufactured, and concrete is not poured into the reserved stress island space.

Description

technical field [0001] The invention relates to a prefabricated building system technology, in particular to a prefabricated cavity panel technology for a force island cavity floor. Background technique [0002] In the 1980s, the production of concrete prefabricated slab components in my country was in a stage of great development. Due to the poor integrity of concrete prefabricated slab components, it was banned from use; in the process of residential construction, the country promoted the use of large slab structures and cast-in-place concrete structures for floor slabs. , cast-in-place concrete hollow floor structure, cast-in-place concrete frame structure, cast-in-place concrete frame shear wall structure, etc.; with the process of housing industrialization, recently, steel-concrete composite structure and steel-concrete composite cavity floor structure system have It has been developed rapidly, and the prefabricated floor in my country has just started, using longitudinal...

AI Technical Summary

Problems solved by technology

However, there are defects such as long solidification and hardening time of the hollow filling body, low mold utilization rate, high density and heavy weight of the hollow filling body, inconvenient production and transportation, poor integrity of the filling body and easy damage, etc.

[0004] In order to promote the development of housing industrialization in China, the inventors applied for ZL200820126232.1 "a cast-in-place steel concrete cavity floor" and ZL200910143977.8 "a heating system for a cast-in-place hollow floor building using solar energy" and ZL201110332999.6 "A hollow floor made of foam composite filler" organically combines the assembled steel structure with the cast-in-place reinforced concrete cavity floor, and solves the problems of fire prevention, rust, quality, shear resistance, and perennial problems of the assembled steel structure. Maintenance, cost, etc. and the conversion of inexhaustible solar energy into hot wind energy for heating and the use of foam plastics not only solve the technical problems of non-core pulling and forming holes, but also play the role of sound insulation, heat insulation and heat preservation. Function; Although these inventions have laid a solid foundation for my country's housing industrialization process, they are all cast on site, with poor controllability and strong technical implementation, making it difficult to form industrialized production.

[0005] In order to realize industrial production, the inventor applied for ZL201320467350.X "a combined mesh box-shaped component for forming holes in cast-in-place hollow floors" and ZL201520186565.2 "a cavity building with ribbed steel mesh "cover", to comprehensively improve the existing pouring hollow floor technology, realize the transformation and upgrading, update and greatly reduce the self-weight of the cavity floor, add self-insulation performance, strong structural safety, and realize the floor Large span, large space, and large load; although it solves the problem of industrial production of hole-forming components, large building formwork and steel pipe column support are required, and there is a defect that the mold making time is long and affects the construction speed; however, the background of the above cast-in-place hollow floor The continuous improvement of technology has laid a solid foundation for the horizontal structure of large-span prefabricated buildings without exposed beams

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