Steel-reinforced concrete specially-shaped column with L-shaped cross section and quadrangular holes in steel-reinforced webs

Abstract

The invention discloses a steel-reinforced concrete specially-shaped column with an L-shaped cross section and quadrangular holes in steel-reinforced webs. The steel-reinforced concrete specially-shaped column comprises a steel-reinforced framework, a steel reinforcement framework and concrete, wherein the steel-reinforced framework has the L-shaped cross section and comprises the two steel-reinforced webs and two steel-reinforced flanges, and a plurality of quadrangular holes are formed in the steel-reinforced webs; the steel reinforcement framework comprises longitudinal steel reinforcements and stirrups; the steel-reinforced framework is positioned at the center of the cross section of the specially-shaped column; the steel reinforcement framework is arranged around the steel-reinforced framework; the steel-reinforced framework and the steel reinforcement framework are wrapped by the concrete. The steel-reinforced concrete specially-shaped column has the advantages that no anti-shear connecting piece is used, so that the steel quantity is reduced, the adhesive property between the steel frameworks and the concrete is enhanced, the cooperative working capacity between the steel frameworks and the concrete is improved, and the slippage of the steel frameworks and the concrete is alleviated; the stable bearing capacity of the steel frameworks is improved, and the fireproof and anti-corrosion functions are achieved under the condition of not increasing extra charge; the steel-reinforced concrete specially-shaped column is simple and convenient in construction, and the comprehensive engineering cost is reduced.

Description

technical field [0001] The invention relates to the technical field of a new type of building structure, in particular to an L-shaped cross-section steel-reinforced concrete special-shaped column with quadrilateral holes in the steel-frame 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 steel special-shaped column is d...

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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