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

A technology of concrete structures and square steel pipes, applied in the direction of long-strip structural members, structural elements, arched beams, etc. for load-bearing, can solve the problems of poor connection performance, small hoop effect, inconvenient construction, etc., and achieve torsion resistance Good performance, low construction cost and easy construction

Inactive Publication Date: 2013-04-24
XIAN HIGHWAY INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

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Embodiment 1

[0031] Such as figure 1 , figure 2 which is image 3As shown, the present invention includes a square steel pipe 1, a circular steel pipe 2 set inside the square steel pipe 1, multiple PBL stiffeners 3 arranged between the square steel pipe 1 and the circular steel pipe 2, and multiple PBL stiffeners 3 arranged from top to bottom. The stirrups 6 on the multiple PBL stiffeners 3 and the multiple PBL stiffeners 3 and the multiple stirrups 6 are all laid out and filled in the cavity between the square steel pipe 1 and the circular steel pipe 2 The concrete structure 4 formed by pouring the concrete inside, the square steel pipe 1 and the circular steel pipe 2 are arranged coaxially. The laying direction of multiple PBL stiffeners 3 is consistent with the central axis direction of the circular steel pipe 2 and the square steel pipe 1 , and the multiple PBL stiffeners 3 are tightly connected with the concrete structure 4 as a whole. The longitudinal lengths of the square steel ...

Embodiment 2

[0051] In this embodiment, the difference from Embodiment 1 is: A1:A2=1:0.6, the wall thickness of the square steel pipe 1 and the round steel pipe 2 are both 25mm, and the cross-sectional area of ​​the square steel pipe 1 is 10m 2 , the four PBL stiffeners 3 are respectively fixed on the two centerlines of the square steel pipe 1 .

[0052] In this embodiment, the structures and connections of other parts are the same as those in Embodiment 1.

Embodiment 3

[0054] In this embodiment, the difference from Embodiment 1 is: A1:A2=1:0.8, the wall thickness of the square steel pipe 1 and the round steel pipe 2 are both 25mm, A1=10m 2 .

[0055] In this embodiment, the structures and connections of other parts are the same as those in Embodiment 1.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/00E04C3/34E04C3/38E01D19/00E01D101/26E01D101/30
Inventor 王旭杨光辉刘永健高小育李志立黄月超张俊光樊小林裴会成
Owner XIAN HIGHWAY INST
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