CN214995235U

CN214995235U - Profile concrete column with surface attached with convex particle structure

Info

Publication number: CN214995235U
Application number: CN202120538687.XU
Authority: CN
Inventors: 艾鹏鹏; 耿大新; 陈航; 黄永虎; 王辉; 朱雄涛; 赵燕飞; 王宁; 唐谟宁
Original assignee: East China Jiaotong University; China Tiesiju Civil Engineering Group Co Ltd CTCE Group; Fifth Engineering Co Ltd of CTCE Group
Current assignee: East China Jiaotong University; China Tiesiju Civil Engineering Group Co Ltd CTCE Group; Fifth Engineering Co Ltd of CTCE Group
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-12-03
Anticipated expiration: 2031-03-15

Abstract

The utility model discloses a surface attaches section bar concrete column of protruding grain structure, including the filling portion and with the concrete of filling portion parcel, the outer fixed surface of filling portion is connected with protruding structure. The shape of the convex structure can be regular hexagon, rectangle, circle or other shapes. Is suitable for various concrete columns. The raised structure can increase the bonding effect between the section steel and the concrete, particularly enhance the chemical bonding force in the bonding force, and certainly improve the frictional resistance and the mechanical gripping force so as to ensure the cooperative stress performance between the section steel and the concrete under the condition of not improving the strength of the concrete; the existence of the protruding structure can avoid arranging a large amount of shear connectors on the section steel, can shorten the working period, improve the compactness of concrete pouring, improve the bearing capacity and the ductility of the column, facilitate the design of an anti-vibration area, and have good economic benefits.

Description

Profile concrete column with surface attached with convex particle structure

Technical Field

The utility model belongs to the technical field of the concrete column technique and specifically relates to a section bar concrete column of protruding grain structure is attached to surface.

Background

In the steel concrete column, the form of the section steel can be basically divided into a solid-web type and a hollow-web type. The solid web type section steel adopts I-shaped, square-shaped, cross-shaped sections and the like which are formed by welding or directly rolling steel plates. The hollow section steel is a lattice type steel skeleton formed by connecting angle steels or small section steels through gusset plates and comprises a flat web member and an inclined web member. Research shows that compared with a hollow section steel concrete column, the solid section steel concrete column has remarkable advantages in the aspects of bearing capacity, rigidity, ductility and the like. Compared with the common reinforced concrete column, the steel reinforced concrete column has the characteristics of high bearing capacity, good ductility, high rigidity, excellent anti-seismic performance and the like, and according to the experimental research of scholars at home and abroad, the bonding effect between the section steel and the concrete is far smaller than the bonding effect between the steel bar and the concrete. The bonding strength measured by the test of the Japanese scholars is only 45% of the bonding strength of the plain round reinforcing steel bars and the concrete, while the bonding strength measured by the domestic scholars is 60%. The good performance of the profile steel concrete column is based on the premise that profile steel and concrete work cooperatively under the condition of ensuring the bonding performance. Due to the bonding effect, the interface of the section steel and the concrete realizes stress transfer, and the working stress required by structural bearing is established so as to resist various external action effects together. Shear force transmission between the steel reinforced concrete mainly has two modes, namely natural bonding and arrangement of a shear connecting piece. The natural adhesion between the section steel and the concrete connecting surface in the section steel concrete column mainly comprises the chemical adhesive force between cement colloid in the concrete and the surface of the section steel, the frictional resistance on the contact surface of the section steel and the concrete and the mechanical engaging force with rough and uneven surface of the section steel. Wherein the chemical cementing power is directly related to the strength of the cementing action. The chemical cementing power mainly exists before the relative bonding slippage of the section steel and the concrete surface occurs, when the relative bonding slippage occurs on the connecting surface, the cement colloid is sheared or crushed, the chemical cementing power is greatly reduced, and for the section steel, the specific gravity of the chemical cementing power in the total bonding power is far greater than that in the plain round steel bar. After the chemical cement binding force is removed from work, the section steel and the concrete mainly keep working together by mutual frictional resistance and mechanical engagement force. In the tests of the steel reinforced concrete beam column, the scholars at home and abroad find that the concrete and the steel section have small slippage and the assumption of a flat section is basically established before reaching 80 percent of the ultimate strength of the member. And reach the loading later stage, especially before the component is close to destroying, the slip between shaped steel and the concrete is fairly obvious, and is not neglected, and the flat section supposition no longer holds this moment. Complete cooperation between the profiled bars and the concrete can only be considered if the elements of the shear connection are arranged according to a complete shear calculation. Therefore, the effect of the stick slip must be considered for members that do not have shear connections. But set up the shear connector in actual engineering and can increase the time limit for a project, improve the cost, the deformation of shear connector when atress can increase the destruction of concrete, makes the natural bonding strength between shaped steel and concrete reduce.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problem that the natural bonding strength is low between current shaped steel and the concrete, the utility model provides a profile concrete column of protruding grain structure is attached to surface.

The utility model provides a solve its technical problem's technical scheme is:

the profile concrete column with the surface provided with the convex particle structure comprises a filling part and concrete wrapping the filling part, wherein the outer surface of the filling part is fixedly connected with a convex structure.

Further, the cross-sectional shape of the projection structure may be one of a regular hexagon, a rectangle, and a circle.

Further, the convex structures may be regularly arranged and irregularly arranged.

Furthermore, the filling part comprises a first assembly and a second assembly, wherein the first assembly comprises a first steel plate, a second steel plate which is perpendicular to the first steel plate and is welded and fixed, and a third steel plate which is perpendicular to the second steel plate and is parallel to the first steel plate and is welded and fixed.

Furthermore, the second assembly comprises a fourth steel plate arranged in parallel with the second steel plate, a fifth steel plate welded and fixed with the fourth steel plate and the second steel plate in a vertical mode, a seventh steel plate arranged in parallel with the second steel plate and the fourth steel plate, and a sixth steel plate welded and fixed with the second steel plate and the seventh steel plate in a vertical mode.

Further, the second component and the first component are perpendicular to each other.

Furthermore, the fifth steel plate is fixedly connected with the second steel plate, and the sixth steel plate is fixedly connected with the second steel plate.

Furthermore, the cross section of the concrete column is rectangular and longitudinal ribs are arranged at four corners of the concrete column.

Furthermore, a stirrup is wound around the longitudinal rib and the concrete column.

Furthermore, the material of the filling part can be one of materials meeting engineering strength requirements, such as composite materials or steel materials.

The utility model has the advantages that:

1. after the shape and the size of the convex structure welded on the surface of the filling part are reasonably selected, the bonding effect between the surface of the section steel and the concrete in the section steel concrete column can be improved, particularly the chemical cement bond in the bonding effect is improved, and the frictional resistance and the mechanical occlusion force are also improved. The cooperative stress performance between the filling part and the concrete is improved under the condition that the strength grade of the concrete is not improved.

2. The existence of the protruding structure can avoid arranging a large amount of shear connectors on the profile steel, shorten the construction period, improve the compactness between the concrete and the filling part, and have good economic benefit.

3. The bearing capacity and ductility of the steel-concrete column are enhanced on the premise of not obviously improving the steel content of the concrete column by the aid of the convex structures attached to the surface of the filling part, the design of an anti-vibration area is facilitated, and the concrete column has good economic benefits.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic top view of an embodiment of the present invention;

fig. 2 is a schematic top view of an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a first steel plate according to an embodiment of the present invention.

Reference numbers in the figures: 1. a filling section; 11. a first component; 111. a first steel plate; 112. a second steel plate; 113. a third steel plate; 12. a second component; 121. a fourth steel plate; 122. a fifth steel plate; 123. a sixth steel plate; 124. a seventh steel plate; 2. concrete; 3. hooping; 4. longitudinal ribs; 5. a raised structure; 6. and (7) welding the parts.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

As shown in figure 1, the profile concrete column with the surface provided with the convex particle structure comprises a filling part 1 and concrete 2 wrapping the filling part 1, wherein the cross section shape of the filling part 1 is determined according to actual engineering requirements. The material of the filling portion 1 may be one of materials meeting engineering strength requirements, such as a composite material or a steel material, the material of the filling portion 1 is subject to meeting engineering requirements, and is not limited herein, preferably, the material of the filling portion 1 is selected as the steel material in the present application. The filling part 1 comprises a first component 11, and the first component 11 can be selected according to the requirements of actual production, and is not limited herein, and in the embodiment, the first component 11 can be optionally provided as an i-beam. Wherein the first component 11 is formed by welding a first steel plate 111, a second steel plate 112 and a third steel plate 113. The convex structures 5 are provided on the upper and lower surfaces of the first, second and

third steel plates

111, 112 and 113.

Further, the protrusion structure 5 is fixedly connected to the outer surface of the first member 11. The cross-sectional shape of the convex structure 5 can be changed according to the engineering requirements, the cross-sectional area of the convex structure 5 can also be changed according to the engineering requirements, and the protruding length of the convex structure 5 can also be changed according to the engineering requirements so as to be adapted to the actual engineering, which is not limited herein. In the present embodiment, the cross-sectional shape of the protruding structure 5 can be selected from a regular hexagon, a rectangle, or a circle, and the shape of the protruding structure 5 can be changed according to engineering requirements.

The protruding structure 5 may be obtained by rolling a steel plate in a factory in advance, or may be integrally formed by a 3D printing technique. After the protruding structures 5 are machined on the first steel plate 111, the second steel plate 112 and the third steel plate 113, the first assembly 111 is formed by welding and fixing.

The cross-sectional shape of the concrete column made of the concrete 2 is determined according to the requirements of the actual engineering, and is not limited herein, and in the present embodiment, the cross-sectional shape of the concrete column made of the concrete 2 is set to be rectangular. Wherein the first module 11 is arranged in the centre of the concrete column, thereby enabling the load to which the first module 11 is subjected to be even. All be provided with on four angles of concrete column and indulge muscle 4, around being equipped with stirrup 3 around the concrete column on the outer edge of indulging muscle 4, the outside of stirrup 3 still is provided with the protective layer. After the first assemblies 11 are placed on the inner surface sides of the stirrups 3 and the longitudinal bars 4, the concrete 2 is poured, and then the concrete column can be formed.

As shown in fig. 3, an array of protruding structures 5 is disposed on the outer surface of the first component 11, which is the preferred structure of this embodiment, in actual engineering, the spacing and arrangement between each protruding structure 5 may be changed to adapt to engineering requirements. The first steel plate 111 and the third steel plate 113 are arranged in parallel, one end of the second steel plate 112 is fixedly connected with the first steel plate 111, and the other end of the second steel plate 112 is fixedly connected with the third steel plate 113. And the second steel plate 112 and the first and

third steel plates

111 and 113 are vertically disposed.

As shown in fig. 4, on one side surface of the first steel plate 111, a welding portion 6 is further provided, the welding portion 6 is used to reserve a welding position of the second steel plate 112 and the first steel plate 111, and the thickness of the welding portion 6 and the second steel plate 112 is adapted, and the projection structure 5 is not provided on the welding portion 6. Further, a welded portion 6 is also provided at a position corresponding to the third steel plate 113.

Example 2

As shown in fig. 2, in order to meet the requirements of the actual engineering, the filling part 1 further comprises a second component 12, and the second component 12 is arranged perpendicular to the first component 11 in the above-mentioned embodiment. The second member 12 includes a fourth steel plate 121, a fifth steel plate 122 vertically and fixedly connected to one side of the fourth steel plate 121, a seventh steel plate 124, and a sixth steel plate 123 vertically and fixedly connected to one side of the seventh steel plate 124, wherein the fourth steel plate 121 and the seventh steel plate 124 are parallel to the second steel plate 112. One end of the fifth steel plate 122 is fixedly connected with the fourth steel plate 121, and the other end of the fifth steel plate 122 is fixedly connected with the second steel plate 112. One end of the sixth steel plate 123 is fixedly connected with a seventh steel plate 124, and the other end of the sixth steel plate 123 is fixedly connected with the second steel plate 112.

The same raised structures 5 are provided on the outer surface of the second component 12, and the raised structures 5 are provided on the second component in the same manner as the raised structures 5 provided on the first component 11 in embodiment 1. And the steel plates of the second assembly 12 are connected by welding.

It will be apparent to those skilled in the art that changes and modifications may be made to the present invention without departing from the spirit and scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a profile concrete column of surface attaches protruding grain structure, includes filling portion and the concrete with filling portion parcel, its characterized in that, the fixed surface of filling portion is connected with protruding structure.

2. The concrete column with surface bump grain structure as claimed in claim 1, wherein the cross-sectional shape of the bump structure is one of regular hexagon, rectangle and circle.

3. The concrete column with surface bump grain structure as claimed in claim 1, wherein the bump structure can be arranged regularly or irregularly.

4. The surface-bump-structured concrete column as claimed in claim 1, wherein said filler comprises a first member and a second member, said first member comprises a first steel plate, a second steel plate welded and fixed perpendicularly to said first steel plate, and a third steel plate welded and fixed perpendicularly to said second steel plate and parallel to said first steel plate.

5. The surface-bump-structured concrete column as claimed in claim 1, wherein said second assembly comprises a fourth steel plate disposed parallel to said second steel plate, a fifth steel plate welded and fixed perpendicular to said fourth steel plate and said second steel plate, a seventh steel plate disposed parallel to said second steel plate and said fourth steel plate, and a sixth steel plate welded and fixed perpendicular to said second steel plate and said seventh steel plate.

6. The surface-bump-structured concrete column as claimed in claim 5, wherein said second member and said first member are perpendicular to each other.

7. The concrete column with the surface provided with the convex grain structure as claimed in claim 5, wherein the fifth steel plate is fixedly connected with the second steel plate, and the sixth steel plate is fixedly connected with the second steel plate.

8. The concrete column with surface bump grain structure as claimed in claim 1, wherein the cross section of the concrete column is rectangular and longitudinal ribs are provided at four corners of the concrete column.

9. The concrete column with surface bump grain structure as claimed in claim 8, wherein hooping is wound around the longitudinal bars and the concrete column.

10. The surface-bump-structured concrete column as claimed in claim 1, wherein the material of the filling part is one of a composite material and a steel material.