Partially prefabricated steel reinforced concrete mega-frame structure and construction method

Abstract

The invention discloses a partially prefabricated steel reinforced concrete mega-frame structure. The partially prefabricated steel reinforced concrete mega-frame structure adopts an idea of partiallyprefabricated assembly and partially cast-in-place and is composed of a partially prefabricated mega prefabricated steel reinforced concrete external frame and a prefabricated concrete internal frame. The partially prefabricated steel reinforced concrete mega-frame structure comprises partially prefabricated mega fabricated steel reinforced concrete beam and column prefabricated shells, cast-in-place common concrete filled in the prefabricated steel reinforced concrete beam and the column shells, steel plate sleeve and steel plate joint core area connecting devices connected with the prefabricated steel reinforced concrete beam and the column shells, prefabricated concrete beams and columns and cast-in-place high strength concrete filled in precast concrete beam and column joints. The invention further provides a construction method of the composite structure. The external frame adopts the partially prefabricated technology to improve the interface shear force transfer and connectionperformance between components and the overall continuity of the composite structure; and the internal frame improves the overall stiffness of the composite structure and reasonably divides the structural space. The combination of the external and internal frames enables the composite structure to be safe and reliable and is flexible in design.

Description

technical field [0001] The invention belongs to the technical field of construction, and in particular relates to a partially prefabricated assembled steel concrete giant frame structure and a construction method. Background technique [0002] The steel concrete structure refers to the steel-concrete composite structure formed by disposing steel in the section of the reinforced concrete member. Compared with the reinforced concrete structure, the steel concrete structure has significant advantages such as high bearing capacity, high rigidity, and good seismic performance due to the configuration of steel inside the reinforced concrete section; compared with the steel structure, because the steel is wrapped with concrete, the steel concrete structure has It has outstanding advantages such as low cost, high rigidity, good fire resistance and durability. Therefore, the steel concrete structure has the advantages of both concrete structure and steel structure. However, the con...

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Problems solved by technology

However, it should be noted that the fully prefabricated concrete structure also has many shortcomings.

First, since steel-concrete structures are mainly used in high-rise buildings and long-span buildings, the cross-sectional size of steel-concrete components is often relatively large, and the components are heavy in weight. The transportation and hoisting of fully prefabricated steel-concrete Difficult and expensive to install

Second, in the fully prefabricated concrete structure, in addition to the good connection of steel bars and section steel, the concrete cross-section connection between prefabricated components is also very important, and the force transmission mechanism of the cross-section connection is relatively complicated, and the quality of the connection is not easy to guarantee

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