Novel square steel tube concrete column and construction method thereof

Abstract

The invention discloses a novel square steel tube concrete column and a construction method thereof. The novel square steel tube concrete column comprises built-in transverse stiffening steel bars, steel plates, and concrete; the steel plates surround to form square steel tubes, the built-in transverse stiffening steel bars are welded to four inner walls of each square steel tube according to different diameters and layout spacing, and the concrete is filled inside the square steel tubes. According to the novel square steel tube concrete column, the rigidity of the steel tube wall is strengthened, the bonding effect of steel material and concrete material is strengthened at the same time, the restraining effect of the stiffening steel bars on the core concrete is strengthened; and the slippage of the core concrete and local buckling of the steel tubes are delayed, so that the steel tubes and the concrete are closely combined to work together, and the ultimate bearing capacity and ductility of components are effectively improved. The novel square steel tube concrete column is simple in structure, the cost is saved, and the engineering application value is high.

Description

technical field [0001] The invention relates to a novel square steel tube concrete column and a construction method thereof. Background technique [0002] The concrete filled steel tube structure is composed of two materials with different properties, steel and concrete. During the stress process, each exerts its own stress characteristics, complements each other, and brings out the best in each other. The outer steel pipe can effectively improve the restraint effect on the internal concrete, and the concrete is better in a three-dimensional compression state under the lateral restraint of the steel pipe, so that the concrete can exert better compressive performance; at the same time, due to the existence of the steel pipe, When the concrete is poured, the cost of formwork support is saved, the construction speed is improved, and the construction period is shortened, the overall stability of the structure is good, and the economic benefits are remarkable. [0003] A large n...

AI Technical Summary

Problems solved by technology

[0003] A large number of research results also show that the confinement effect of steel pipes on the core concrete in circular sections is better, but the disadvantage is that the design of the joints between circular section columns and steel beams or reinforced concrete beams is more complicated, and it is not convenient for construction. Due to its regular cross-sectional shape, the square concrete-filled steel tube column has a simple structure and is easy to construct, especially in the design of beam-column joints. Therefore, the research results and engineering applications of square steel tube concrete structures are becoming more and more extensive.

Images