Cross-shaped section steel rib concrete special-shaped column forming quadrilateral holes in steel rib webs

Abstract

The invention discloses a cross-shaped section steel rib concrete special-shaped column forming quadrilateral holes in steel rib webs. The cross-shaped section steel rib concrete special-shaped column comprises a steel rib framework, a steel bar framework and concrete, wherein the steel rib framework is a cross-shaped section steel rib framework and comprises four steel rib webs and four steel rib flanges, and a plurality of quadrilateral holes are formed in the steel rib webs; the steel bar framework comprises longitudinal steel bars and stirrups; the steel rib framework is positioned at the central part of the section of the special-shaped column, the steel bar framework is arranged around the steel rib framework, and the concrete is used for wrapping the steel rib framework and the steel bar framework. The cross-shaped section steel rib concrete special-shaped column disclosed by the invention does not need to be provided with an anti-shearing connecting piece, so that the steel consumption is reduced, the bonding performance between steel ribs and the concrete is enhanced, the cooperative working ability between the steel ribs and the concrete is improved, and the slippage is reduced; the stable bearing force of the steel ribs is improved, and the problems of fire prevention and corrosion prevention are better solved under the situation of not increasing additional cost; the construction is simple and convenient, and the comprehensive cost of a project is reduced.

Description

technical field [0001] The invention relates to the technical field of a new type of building structure, in particular to a steel-reinforced concrete special-shaped column with a cross-section steel-reinforced concrete with quadrilateral holes in the steel-reinforced web. Background technique [0002] In residential buildings, special-shaped column structures have incomparable advantages over other structural systems, and are more and more favored by people. In recent years, they have been highly valued by scholars and engineers at home and abroad, and thus have been widely used. [0003] In multi-story residential buildings, the reinforced concrete special-shaped column structure is difficult to meet the requirements of bearing capacity and joint treatment due to many restrictions such as the length and thickness ratio of the column section, so that the advantages of the special-shaped column cannot be fully reflected, thus limiting its application. range; and the pure stee...

AI Technical Summary

Problems solved by technology

Relatively speaking, the truss steel frame in the truss-type steel-reinforced concrete special-shaped column is welded by angle steel or channel steel through horizontal and oblique slabs or strips. The construction is relatively cumbersome, and the connection workload is too large. Limited force and shock resistance

In the solid-web steel reinforced concrete special-shaped column, when the steel frame does not have shear connectors, the bond between the steel and concrete is very low (only about 45% of the bond between the smooth steel bar and concrete) %), the lack of cohesive force will affect the cooperative work between the steel frame and concrete (the current research basically does not set up shear connectors, but in the analysis it is assumed that the steel frame and concrete work together completely, which is different from the The actual working state is not consistent), which affects the bearing capacity, failure mode and working mechanism of the component; if the shear connector (bolt) is installed, although the cooperative work ability between the steel frame and the concrete can be improved, but due to The contact between studs and concrete bears complex forces, and the concrete is easy to be damaged early and lose its bearing capacity. In addition, studs need special welding equipment to weld, which will increase the difficulty and complexity of construction, increase the construction workload, reduce the construction speed, and increase the construction cost. The construction period and steel consumption will increase the overall cost of the project

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