Stress island steel structure assembly type cavity floor

Abstract

The invention provides a stress island steel structure assembly type cavity floor. The stress island steel structure assembly type cavity floor comprises steel columns, an I-shaped steel beam, prefabricated cavity floor components with reserved corners, a cast-in-situ reinforced concrete stress island and a cast-in-situ reinforced concrete floor upper flange plate; the steel columns or static concrete steel columns are assembled in site; the prefabricated cavity floor components with the reserved corners are lifted and installed on the inner side of a flange plate of the I-shaped steel beam; and exposed rib beam reinforcing steel bars at the two ends of the prefabricated cavity floor components with the reserved corners stretch into web reserved holes or the inner side of the flange plate of the I-shaped steel beam and are welded or tied. During manufacturing of the prefabricated cavity floor components with the reserved corners, in the rib beam reinforcing steel bars, concrete is not poured when a corner is reserved and prefabricated; when the corner is assembled in site, a stress island cavity is formed between column-beam combination areas, and the concrete is poured in a main beam steel band, an upper flange plate rib and the stress island cavity; and the required stress island steel structure assembly type cavity floor is obtained.

Description

technical field [0001] The invention relates to a prefabricated building system technology, in particular to a steel structure prefabricated cavity floor of a stress island. Background technique [0002] In the process of housing construction in the country, hollow prefabricated slab structures, large slab structures, cast-in-place concrete structures, cast-in-place concrete hollow floor slab structures, cast-in-place frame shear wall structures, etc. are used for floor slabs. With the process of residential industrialization, steel - Mixed composite structure and steel-concrete combined cavity floor structure system has been developed rapidly, and a new upsurge in prefabricated buildings is coming. [0003] For example, the ZL98231113.3 concrete thin-walled cylindrical member declared by the applicant is made into a sealed cylindrical filling body, which provides a tubular hollow filling body for the realization of the cast-in-place hollow floor, and solves the problem of n...

AI Technical Summary

Problems solved by technology

[0008] A prefabricated cavity floor with a steel structure for a stressed island, which improves the existing frame shear wall structure system and frame core tube structure system; fully utilizes the advantages of factory industrialization to produce prefabricated assembly cavity components, and solves the problems existing in the existing system. Problems such as construction, environmental protection, weight, cost, and work efficiency; the overall force of the building structure is solved by pouring reinforced concrete on site, and organically combine the prefabricated components of the cavity in industrial production with the reinforced concrete poured on site to optimize the shear of the existing frame. The force wall structure system technology transforms and upgrades the existing prefabricated frame shear wall structure system and replaces it; solves the problems of poor controllability of the overall on-site pouring in the existing structure system, strong technical implementation, environmental pollution caused by on-site construction, and heavy quality , high construction cost, slow progress of the project, exempting a large number of building formwork and steel supports, resulting in long formwork time and affecting the construction speed; beam-column joints have small shear force areas, which are likely to cause safety hazards; especially prefabricated cavity floors In this case, in the reinforcement of the rib beam, a corner is reserved for prefabrication without pouring concrete, and when the corner is assembled on site, a force-bearing island cavity is formed in the joint area of ​​the column and beam, and the steel belt of the main beam, the reinforcement of the upper flange, and the force-bearing island Pouring concrete in the cavity to obtain a reinforced concrete cavity floor for the force-bearing island is an important part of the prefabricated building.

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