A double stiffened SCS square steel tube concrete structure based on stirrups and stiffening ribs

Abstract

The present invention discloses a double stiffened SCS square steel tube concrete structure based on stirrups and stiffening ribs, including a square steel pipe, a round steel pipe sleeved inside the square steel pipe, a plurality of PBL stiffening ribs laid between the square and round steel tube, a plurality of stirrups laid in the plurality of PBL stiffening ribs from top to bottom, and a concrete structure pouring formed by concrete filled in the cavity between the square steel tube and the round steel pipe, and the square steel pipe and the round steel pipe laid around the same axis. The layout directions of the plurality of PBL stiffening ribs are all the same with the central axis direction of the round steel pipe; the longitudinal lengths of the square steel pipe, the round steel pipe and the plurality of PBL stiffening ribs are the same; the plurality of PBL stiffening ribs are laid along the circumferential direction; and the plurality of stirrups are laid in parallel. The concrete structure of the invention has simple structure, reasonable design, easy construction and low construction cost, excellent mechanical properties and good use effect, and can solve many problems existing in current square steel concrete structures.

Description

technical field [0001] The invention relates to a steel pipe concrete structure, in particular to an SCS square steel pipe concrete structure based on double reinforcement of stirrups and stiffening ribs. Background technique [0002] Concrete filled steel pipe refers to the structure formed after the steel pipe is filled with concrete. The two materials of steel and concrete make up for each other's weaknesses and give full play to each other's strengths, so that the steel tube concrete has a high bearing capacity and excellent mechanical properties. Nowadays, CFST structures are more and more widely used in structures such as offshore platforms and long-span, heavy-duty, and light bridges, and the CFST structures used mainly have three cross-sectional forms: circular, square, and rectangular. However, the currently used concrete-filled steel tube structures generally have structural defects that limit the development and application of concrete-filled steel tube structure...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a double-stiffened SCS square concrete-filled steel tube structure based on stirrups and stiffening ribs, which is simple in structure, reasonable in design, convenient in construction, and low in construction cost. It has excellent mechanical properties and good use effect, and can effectively solve the existing problems of the existing square steel tube concrete structure, such as self-heaviness, inconvenient construction, poor connection performance between the outer steel tube and the inner concrete, and the small effect of the outer steel tube on the inner concrete.

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