Combined-type steel tube concrete column

Abstract

The invention discloses a combined-type steel tube concrete column which comprises two 'H'-shaped sectional steel which is vertically arranged and are welded integrally through flanges; a web of the sectional steel is provided with a shearing resistant bolt screw along the height direction; concrete is poured into a cavity enclosed by splicing the two sectional steels; and the concrete and the sectional steel are connected integrally through the shearing resistant bolt screw. According to the invention, internal baffle plates are not required to be arranged, so the combined-type steel tube concrete column is simple to manufacture; concrete in the column is integral, and is convenient to pour; the combination effect of sectional steel tubes and concrete is reliable, and the bearing capability is easy to guarantee; and the construction and manufacturing are convenient, and the economical performance is superior.

Description

technical field [0001] The invention belongs to the technical field of building structure engineering, in particular to a composite steel pipe concrete column. Background technique [0002] At present, steel structures often use rectangular concrete-filled steel tube columns, that is, steel tubes are filled with concrete. The steel tubes restrain the concrete, increasing the strength and ductility of the concrete; Tensile properties of steel and compressive properties of concrete. However, the prerequisite for this kind of joint work is that the concrete inside the pipe is a continuous body and is in close contact with the steel pipe. [0003] The commonly used structure in the beam-column joint area is to set an outer ring plate or an inner diaphragm inside the tube. The outer ring plate is generally large in size, has a great impact on the building, has poor adaptability and flexibility, and is rarely used. However, electroslag welding is required to install the inner p...

AI Technical Summary

Problems solved by technology

The outer ring plate is generally large in size, has a great impact on the building, has poor adaptability and flexibility, and is rarely used

However, electroslag welding is required to install the inner partition, the quality of the weld is not easy to achieve full penetration, and the welding residual stress is very large; the inner partition divides the concrete into several sections, which is inconvenient for pouring and vibrating; more importantly, the shrinkage of the concrete will reduce the will separate the concrete from the inner diaphragm and steel pipe

Once this happens, not only the steel pipe and the concrete cannot work together, but the concrete inside the column will lose its bearing capacity

This kind of defect is not easy to detect and repair, and will bring hidden dangers to the project

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