Star-section reinforced concrete combination column with reinforced with external angle steel

Abstract

The invention relates to a star-section reinforced concrete combination column with reinforced with external angle steel. The star-section reinforced concrete combination column with reinforced with external angle steel comprises external angle steel, bolt connecting parts, longitudinal ribs, stirrups and concrete, wherein the stirrups are bent to be a cross shape; the external angle steel is arranged at the turning corner where two branches of the cross intersect with each other; two adjacent pieces of external angle steel are connected through the bolt connecting parts; the external angle steel is fixed with a bottom plate in a welded manner or through the bolt connecting parts; the concrete is arranged inside a cross fence formed by the bent stirrups; the longitudinal ribs are arranged on the corners. Due to the adoption of the external angle steel, the situation that the stress is centralized at two adjacent corners is changed, the external angle steel and the star-section reinforced concrete combination column are connected together through bolts and stressed and deformed together, and the star-section reinforced concrete combination column is a main component of a frame structure in a high-rise and large-span building, and has the advantages that the bearing property is high, the rigidity is high, the weight is light, the plasticity and the toughness are good, the impact resistance and the anti-fatigue property are good, the anti-shaking property is good, and the durability is good.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a cross-shaped reinforced concrete column used in civil engineering, which is a cross-section reinforced concrete composite column reinforced with outsourcing angle steel. Background technique [0002] In the current society, with the development of the economy and the improvement of residents' living standards, people's requirements for the beauty, function and housing rate of architectural space are constantly increasing. Because the cross-sectional size of ordinary reinforced concrete columns is often larger than the thickness of the filling wall, edges and corners appear in the interior of the building, which affects the requirements for the use and appearance of the building. To solve this problem, reinforced concrete cross-section columns appeared. The appearance of the reinforced concrete cross-shaped column structure solves the problems of architectural beauty,...

AI Technical Summary

Problems solved by technology

[0003] However, with the continuous development of super high-rise and long-span buildings, the disadvantages of purely reinforced concrete cross-shaped columns have become more and more prominent

If limited by the axial compression ratio, if ordinary reinforced concrete cross-shaped columns are still used under heavy loads, the section size of the columns will be very large; the leg length of the cross-shaped columns should not be too long, otherwise it will easily Because of the shear lag phenomenon, the leg length and leg width of the cross-shaped column are usually limited within a certain proportion; the cross-shaped column has changed its mechanical properties due to the change of the cross-sectional form. Compared with the ordinary rectangular column , the bearing capacity and ductility have declined, and the seismic performance is not ideal; the cross-shaped reinforced concrete column cannot effectively restrain the lateral deformation of the concrete and improve the brittleness of high-strength concrete; under the action of complex external loads, the cross-section column is easy Stress concentration occurs at corners

Although the cross-shaped reinforced concrete column has the advantages of beautiful architecture and convenient use, its special cross-sectional form results in poor mechanical performance, which limits the application and promotion of the cross-shaped column

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