Plate-column structure node of profile steel column and column cap prefabricated component and construction method thereof

Abstract

The invention discloses a plate-column structure node of a profile steel column. The plate-column structure node comprises the profile steel column, a prefabricated column cap or support plate, a floor prefabricated component and a connecting combined surface thereof, a reinforcement and post-pouring connecting concrete; at least one anti-shear ring welded at the outer periphery of the profile steel column and an annular beam type reinforcement skeleton are arranged on the outer surface of the profile steel column; the annular beam type reinforcement skeleton consists of four and more annular reinforcements and stirrups perpendicular to the annular reinforcements and arranged in the radial direction; the annular reinforcements are bound with the angles and the edges of the stirrups in the stirrups to form an annular beam type reinforcement cage; and the stirrups of the annular beam type reinforcement skeleton are near the upper surfaces from near the bottoms of column caps or support plates to cast-in-place layers of floors. The invention further discloses a column cap prefabricated component and a construction method. The plate-column structure node of the profile steel column and the column cap prefabricated component and the construction method thereof can realize the assembly construction of a plate-column structure of the profile steel column, and are low in construction difficult, few in support, low in cost and high in efficiency.

Description

technical field [0001] The invention relates to the field of concrete structures and prefabricated building structures, in particular to an assembled slab-column structure system and its column cap prefabricated components and construction method. Background technique [0002] Since prefabricated buildings conform to the production method of environmental protection and energy saving, the country has proposed a development goal of making prefabricated buildings account for 30% of new buildings in about 10 years; The floor height is very economical in underground buildings and as multi-storey parking. The slab-column structure can be cast on site or prefabricated and will have a large market space. [0003] Splitting the building structure into components and the node structure of component assembly is the key first step in the industrialization of construction - prefabricated buildings. [0004] The current prefabricated steel column-slab-column structure has the following ...

AI Technical Summary

Problems solved by technology

[0005] (1) At present, the assembly technology of the slab-column structure is not perfect, and the assembly nodes of the slab-column structure of the steel column are basically still blank

[0006] (2) At present, there are published patents CN 102071747 A "nodes and manufacturing methods for connecting square steel pipe concrete columns and reinforced concrete floors" and CN101457548A "nodes and methods for connecting circular steel pipe concrete columns and reinforced concrete floors". There are problems in the production of Fangfa: (1) It is suitable for cast-in-place concrete structures, not assembly structures, and does not consider the problems that need to be solved in assembly; (2) It is only applicable to shaped steel pipes (round steel pipes, square steel pipes) (3) The focus of the node is to solve the connection node between the pipe section steel and the beam, and it does not solve specific problems for the slab-column structure; (4) It does not solve the connection of other steel columns, and does not solve the construction problem according to the characteristics of the assembly construction

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