A composite column of lattice type steel column and reinforced concrete and its construction method

Abstract

The invention discloses a lattice-type section steel column, a composite column and a construction method of the composite column. The lattice-type section steel column comprises a lattice-type lower column and an H-section steel upper column. The lattice-type section steel column is characterized in that the lattice-type lower column has a rectangular section; the lattice-type lower column is composed of four angle steel upright rods located at four corners of the rectangular section and inclined web members; and a certain length of a lower end of the H-section steel upper column stretches into the lattice-type lower column. The lattice-type section steel column has the advantages that rigidity is high; a steel use amount is low; and chord members and the web members of the lattice-type section steel column can fully bear stress in the composite column so that a steel use amount of the lattice-type section steel column is greatly reduced.

Description

technical field [0001] The invention relates to a building column, in particular to a reinforced concrete composite column of a single-story factory building with a large-tonnage crane. Background technique [0002] Single-storey workshop columns with large-tonnage cranes usually use lattice steel columns and are connected to the foundation with large-diameter bolts. This type of column is expensive and has poor fireproof performance. Composite columns, when the height of the factory building is large, when the H steel column in the column is in the roof construction stage and the concrete of the lower column has not been poured, the deformation of the column will be large, and the strength of the H steel in the composite column cannot be fully utilized. A large number of steel bars are required to meet the requirements of bending strength, so the amount of steel used is large, and the deformation is also large. One kind of composite column with high rigidity during the inst...

AI Technical Summary

Problems solved by technology

[0002] Single-storey workshop columns with large-tonnage cranes usually use lattice-type steel columns and are connected to the foundation with large-diameter bolts. This type of column is expensive and has poor fire resistance. Composite columns, when the height of the factory building is large, when the H steel column in the column is in the roof construction stage and the concrete of the lower column has not been poured, the deformation of the column will be large, and the strength of the H steel in the composite column cannot be fully utilized. A large number of steel bars are required to meet the requirements of bending strength, so the amount of steel used is large, and the deformation is also large. One kind of composite column with high rigidity in the installation stage of the steel structure, and the section steel in the combined steel column can be used as the main reinforcement of reinforced concrete. See the report

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