CN212926709U

CN212926709U - Four corners steel pipe flat web cast in situ concrete post

Info

Publication number: CN212926709U
Application number: CN202020522760.XU
Authority: CN
Inventors: 陈明
Original assignee: Shanghai Open Steel Joist Co ltd
Current assignee: Shanghai Open Steel Joist Co ltd
Priority date: 2020-04-11
Filing date: 2020-04-11
Publication date: 2021-04-09
Anticipated expiration: 2030-04-11

Abstract

The utility model provides a four-corner steel tube flat web cast-in-place concrete column, which comprises a plurality of stiffening ribs, a plurality of flat webs and a plurality of corner steel tubes; the corner steel pipes are uniformly arranged, the flat web plate is arranged between every two adjacent corner steel pipes to form a hollow columnar structure, the two corner steel pipes which are arranged in a diagonal mode are connected with the stiffening ribs, and the four-corner steel pipe flat web plate cast-in-place concrete column which is few in material consumption, high in bending resistance and excellent in stress performance is provided.

Description

Four corners steel pipe flat web cast in situ concrete post

Technical Field

The utility model relates to a building and building materials technical field especially relates to a flat web of four corners steel pipe cast in situ concrete post.

Background

As a column for a load-bearing structure, there is a problem of buckling due to a thin steel plate, and thus, the specification stipulates that there is a limit to the ratio between the thickness of the steel plate and the width of the steel plate in a constrained manner; this index is called "width-to-thickness ratio limit" (i.e., width of steel sheet constrained region/thickness of steel sheet, usually denoted as b/t); the "width of the constrained zone of the steel plate" means the width of the flat steel plate between the edges with lateral constraint; the research of European company shows that the bending resistance moment of inertia index of the component is in direct proportion to the width-thickness ratio. That is, the larger the width-thickness ratio of a steel member having the same cross-sectional area is, the larger the moment of inertia becomes. In view of the above, it is possible to reduce the thickness of the steel plate of the section by providing the longitudinal stiffeners for the box-type pillar section, but this method is rarely used because the amount of welding work is large and the surface of the member is not flat due to welding thermal deformation.

The related patent of the crust column, which is reported by Europe and the company, discloses a crust column which is formed by combining four-corner steel pipes, corrugated plates and an internal cross-shaped pull connecting plate and is mainly characterized in that the four side plates adopt the corrugated plates; under the condition of large eccentric compression, the stress performance of the 'shell column' is reduced quickly, and the 'shell column' shows poor performance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a material is few, and bending resistance is strong, the excellent four corners steel pipe flat web cast in situ concrete post of atress performance.

In order to achieve the purpose, the utility model provides a four-corner steel tube flat web cast-in-place concrete column, which comprises a plurality of stiffening ribs, a plurality of flat webs and a plurality of corner steel tubes; the angle steel pipes are uniformly arranged, the flat web plate is arranged between every two adjacent angle steel pipes to form a hollow columnar structure, and the stiffening ribs are connected between every two angle steel pipes which are arranged in a diagonal mode.

Preferably, the flat web is four, the corner steel pipe is four, and the flat web and the corner steel pipe enclose a cuboid column.

Preferably, both ends of the stiffening rib are respectively fixed to the two corner steel pipes arranged diagonally.

Preferably, the hollow columnar structure is internally poured with concrete.

Preferably, the corner steel pipe is a square steel pipe.

Compared with the prior art, the utility model has the advantages that: the utility model discloses a flat web replaces the ripple web, and the bending resistance of flat web is showing and is promoting, under the condition of big eccentric pressurized, and its atress performance also shows excellently, is fit for the application on a large scale of building trade.

The utility model discloses then ingenious square steel pipe of having utilized encloses the way of synthesizing into the square column body with flat web welding, four angles of square steel pipe form edge constraint, consequently, same external dimension's post, the combination column of four corners steel pipe and flat web, compare the box post that does not have stiffening rib, and thickness is less than half below of the box post wall thickness that is less than same cross-sectional height usually. That is, under the condition that the maximum width-thickness ratio limit is also met, the thickness of the web plate of the combined column of the four-corner steel pipe and the flat side plate can be reduced by nearly half; under the condition of obtaining the same inertia moment, the amount of steel for the cross section is reduced by 20-30%. That is, for the column which is pressed by large eccentricity and not controlled by the axial pressure ratio, the combined column of the four-corner steel pipe and the flat side plate can also meet the stress requirement; particularly, the side plates of the flat steel plates are adopted among the steel pipes, so that the bending resistance of the column is obviously improved; by the method, the steel used for the section of the member is distributed more reasonably, the steel used amount can be obviously reduced, and the economic benefit is obvious.

Drawings

FIG. 1 is a schematic view of the whole structure of a four-corner steel tube flat web cast-in-place concrete column in the embodiment of the present invention;

fig. 2 is the embodiment of the utility model provides an in four corners steel pipe flat web cast in situ concrete column's top view.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be further described below.

As shown in fig. 1 and 2, the utility model provides a four-corner steel tube flat web cast-in-place concrete column, which comprises a plurality of stiffening ribs 2, a plurality of flat webs 1 and a plurality of corner steel tubes 3; wherein, many bight steel pipes 3 evenly arrange, all with be equipped with flat web 1 between two adjacent bight steel pipes 3 to enclose into a hollow columnar structure, link to each other between two bight steel pipes 3 that the diagonal set up and have many stiffening ribs 2.

In the embodiment, the number of the flat web plates 1 is four, the number of the corner steel tubes 3 is four, and the flat web plates 1 and the corner steel tubes 3 enclose a rectangular parallelepiped column.

In this embodiment, the two ends of the stiffening rib 2 are respectively fixed on two corner steel pipes 3 arranged diagonally, and the arrangement of the stiffening rib 2 enables the combined column to have the effect of resisting the expansion force of the concrete 4 by pulling and combining under the condition of concrete pouring.

In this embodiment, concrete 4 is poured inside the hollow columnar structure. The compression-resistant performance-price ratio of the concrete material is several times that of a steel structure, so that the concrete combined column has better compression resistance, bending resistance and shearing resistance bearing capacity; therefore, the concrete column is a novel column form which is simple to manufacture and reasonable in stress. The method is suitable for various multi-story and high-rise frame structures, implements industrial production, and can bring huge savings to the building engineering industry.

In the present embodiment, the corner steel pipe 3 is a square steel pipe.

The utility model discloses a flat web 1 replaces the ripple web, and flat web 1's bending resistance is showing and is promoting, under the condition of big eccentric pressurized, its atress performance also shows excellently, is fit for the application on a large scale of building trade.

The utility model discloses then ingenious square steel pipe of having utilized encloses the way of synthesizing into the square column body with flat web 1 welding, four angles of square steel pipe form edge constraint, consequently, same external dimension's post, four corners steel pipe and flat web 1's combination column, compare the case type post that does not have stiffening rib 2, and thickness is less than half the following of the case type post wall thickness that is less than same cross-sectional height usually. That is, under the condition that the maximum width-thickness ratio limit is also met, the thickness of the web plate of the combined column of the four-corner steel pipe and the flat side plate can be reduced by nearly half; under the condition of obtaining the same inertia moment, the amount of steel for the cross section is reduced by 20-30%. That is, for the column which is pressed by large eccentricity and not controlled by the axial pressure ratio, the combined column of the four-corner steel pipe and the flat side plate can also meet the stress requirement; particularly, the side plates of the flat steel plates are adopted among the steel pipes, so that the bending resistance of the column is obviously improved; by the method, the steel used for the section of the member is distributed more reasonably, the steel used amount can be obviously reduced, and the economic benefit is obvious.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims

1. A four-corner steel tube flat web cast-in-place concrete column is characterized by comprising a plurality of stiffening ribs, a plurality of flat webs and a plurality of corner steel tubes; the angle steel pipes are uniformly arranged, the flat web plate is arranged between every two adjacent angle steel pipes to form a hollow columnar structure, and the stiffening ribs are connected between every two angle steel pipes which are arranged in a diagonal mode.

2. The cast-in-place concrete column with four square steel tubes and flat webs according to claim 1, wherein the number of the flat webs is four, the number of the corner steel tubes is four, and the flat webs and the corner steel tubes enclose a cuboid column.

3. The four-corner steel-tube flat web in-place concrete column according to claim 1, wherein the two ends of the stiffening rib are respectively fixed to the two corner steel tubes arranged diagonally in a diagonal manner.

4. The four-corner steel tube flat web cast-in-place concrete column according to claim 1, wherein concrete is poured into the hollow columnar structure.

5. The square steel tube flat web cast-in-place concrete column according to claim 1, wherein the corner steel tube is a square steel tube.