A concrete hollow composite column

Abstract

The utility model relates to a concrete hollow composite column, which belongs to the technical field of building engineering, and solves the technical problems that it is difficult to arrange molds during the production of concrete hollow composite columns and it is difficult to connect longitudinal steel bars during on-site assembly. The concrete hollow composite column of the utility model includes a prefabricated frame column and longitudinal stress-bearing steel bars; the prefabricated frame column includes a concrete shell, inner ribs and a steel skeleton; the inner ribs evenly divide the space in the concrete shell into multiple through cavities; the steel skeleton includes tension bars, structural bars, angle bars and stirrups, the tension bars are prefabricated in the inner ribs, and the structural bars, angle bars and stirrups are prefabricated in the concrete shell; the longitudinal stress-bearing steel bars and the prefabricated frame column are separate components, and multiple longitudinal stress-bearing steel bars are inserted in the longitudinal direction of the prefabricated frame column before casting. The concrete hollow composite column of this embodiment has light weight, is easy to produce using molds, and the connection method of the longitudinal stress-bearing steel bars is flexible and convenient, which is suitable for standardized promotion and application.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering, in particular to a concrete hollow composite column. Background Art

[0002] In the development of prefabricated buildings in China, prefabricated solid concrete columns are currently widely used. Solid columns are heavy, with high transportation costs and difficulty in lifting. In recent years, a new type of prefabricated hollow concrete composite column has emerged. Although it reduces its own weight by hollowing out some prefabricated parts, it has many problems and cannot be customized, commercialized, and purchased in real time. This lack of versatility limits the potential of prefabricated components in promoting emission reduction, improving economic benefits, and achieving rapid deployment.

[0003] On the other hand, the stirrups and load-bearing longitudinal steel bars of the current prefabricated concrete solid columns and hollow composite columns are all prefabricated in the concrete. This arrangement leads to extremely high requirements on the accuracy of the connection position of the longitudinal steel bars of the columns. During the installation process of actual projects, it is very difficult to connect the longitudinal steel bars of the columns, which seriously restricts the assembly efficiency of prefabricated columns. Utility Model Content

[0004] In view of the above analysis, the embodiment of the utility model aims to provide a concrete hollow composite column to solve the technical problems that it is difficult to arrange the mold during the production of the concrete hollow composite column and it is difficult to connect the longitudinal steel bars during on-site assembly.

[0005] The purpose of this utility model is mainly achieved through the following technical solutions:

[0006] A concrete hollow composite column comprises a prefabricated frame column and longitudinal stress-bearing steel bars, wherein the prefabricated frame column comprises a concrete shell, inner ribs and a steel bar skeleton; the inner ribs are located in the concrete shell and are arranged along the longitudinal direction of the prefabricated frame column, and the inner ribs evenly divide the space in the concrete shell into a plurality of longitudinally penetrating cavities; the steel bar skeleton comprises tension bars and structural bars, the tension bars are prefabricated in the inner ribs and are arranged along the cross-sectional direction of the inner ribs, a plurality of tension bars are evenly distributed along the longitudinal direction of the prefabricated frame column, the structural bars are arranged in the concrete shell along the longitudinal direction of the prefabricated frame column, both ends of the plurality of tension bars are provided with tension bar hooks, and the plurality of tension bar hooks are all around the outer periphery of the structural bars; the longitudinal stress-bearing steel bars and the prefabricated frame column are separate components, and a plurality of longitudinal stress-bearing steel bars are inserted in the longitudinal direction of the prefabricated frame column in the through cavity before casting.

[0007] Furthermore, connecting parts are provided at both ends of the longitudinal stress-bearing steel bars, and the connecting parts are used for longitudinal connection between the longitudinal stress-bearing steel bars.

[0008] Furthermore, the connection portion is a straight thread connection or a plug-in connection structure.

[0009] Furthermore, the cross section of the inner rib is a cross shape.

[0010] Furthermore, the tensioning bars are arranged in a cross shape on the cross section of the inner rib.

[0011] Furthermore, the tensioning bars are arranged in a "well" shape on the cross section of the inner rib.

[0012] Furthermore, the steel bar skeleton also includes stirrups, and stirrup hooks are provided at the ends of the stirrups. The stirrup hooks and the tension bar hooks are both located inside the inner ribs.

[0013] Furthermore, the inner rib is provided with transversely penetrating through-cavity communication holes, and the plurality of through-cavity communication holes are evenly distributed along the longitudinal direction of the inner rib.

[0014] Furthermore, the prefabricated frame column is also provided with a recessed end cap, and both ends of the inner rib are recessed inwardly relative to both ends of the concrete shell.

[0015] Furthermore, the inner wall and the inner ribs of the concrete shell are both provided with rough surfaces.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0017] (1) The hollow concrete composite column of this embodiment increases the rationality of the force bearing of the prefabricated frame column by setting internal ribs, reduces the breakage rate during stacking, transportation and hoisting, and can also reduce the thickness of the concrete shell and reduce the overall weight of the prefabricated frame column while maintaining the same force bearing capacity.

[0018] (2) The hollow composite concrete column of this embodiment reduces the corrosion rate of the exposed steel bar skeleton during the production and storage of the prefabricated columns in the factory by arranging the tension bars in the inner ribs.

[0019] (3) The hollow composite concrete column of this embodiment has a regular shape of the concrete shell frame by setting the reinforcement inside the inner rib, which is easy to process using a mold, has a high degree of standardization, is highly scalable, and reduces construction time.

[0020] (4) The concrete hollow composite column of this embodiment embeds the tie bar hooks and stirrup hooks in the inner ribs, so that all the steel skeletons are embedded in the prefabricated outer shell or inner ribs. The shape is regular and easy to process using a mold, which improves the degree of standardization and is suitable for promotion and application. At the same time, it also makes the construction of the cast-in-place section simpler and easier.

[0021] (5) The concrete hollow composite column of this embodiment is configured with the prefabricated frame column and the longitudinal stress-bearing steel bars as separate components. The longitudinal stress-bearing steel bars are arranged during the cast-in-place process, making the connection of the longitudinal stress-bearing steel bars easy to construct, thereby significantly improving the construction efficiency and the connection quality of the concrete composite column.

[0022] (6) The hollow composite concrete column of this embodiment can enhance the integrity between the cast-in-place concrete and the prefabricated frame column by providing a through-cavity connecting hole, and can also release pressure during the cast-in-place concrete construction process and reduce the generation of bubbles.

[0023] (7) The concrete hollow composite column of this embodiment can reduce cracks caused by volume shrinkage during the solidification process of cast-in-place concrete by setting the surfaces of the inner wall and inner ribs of the concrete shell to rough surfaces, further enhance the integrity between the cast-in-place concrete and the prefabricated frame column, and improve the quality of the concrete hollow composite column.

[0024] (8) The hollow concrete composite columns of this embodiment are provided with recessed end caps, which is conducive to forming a solid whole between adjacent composite columns during the construction positioning process.

[0025] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can be obvious from the description or understood by implementing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the contents specifically pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of a concrete hollow composite column of specific embodiment 1;

[0028] Figure 2 is a schematic diagram of the cross-sectional structure of a concrete hollow composite column of specific embodiment 1;

[0029] Figure 3 It is a structural schematic diagram of the concave-shaped end cap of specific embodiment 1;

[0030] Figure 4 This is a schematic diagram of the cross-sectional structure of a concrete hollow composite column of specific embodiment 2.

[0031] Reference numerals:

[0032] 1-prefabricated frame column; 11-concrete shell; 12-inner rib; 121-through cavity connecting hole; 13-steel skeleton; 131-tension bar; 1311-tension bar hook; 132-structural bar; 133-angle bar; 134-hoop bar; 1341-hoop bar hook; 14-through cavity; 15-recessed end; 2-longitudinal force-bearing steel bar; 21-connecting part. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0034] Example 1

[0035] A specific embodiment of the utility model is as follows Figure 1 , Figure 2 As shown, this embodiment provides a concrete hollow composite column, including a prefabricated frame column 1 and longitudinal stress-bearing steel bars 2. The prefabricated frame column 1 includes a concrete shell 11, inner ribs 12 and a steel skeleton 13. The inner ribs 12 are arranged in the concrete shell 11, and the steel skeleton 13 is pre-embedded in the concrete shell 11 and the inner ribs 12. The prefabricated frame column 1 is manufactured in a factory and cast into a whole using a mold. The longitudinal stress-bearing steel bars 2 and the prefabricated frame column 1 are separate components. A plurality of longitudinal stress-bearing steel bars 2 are arranged in the prefabricated frame column 1 as needed on site, and finally concrete is cast in the prefabricated frame column 1 to form a composite column.

[0036] The concrete hollow composite column of this embodiment has a light weight, the mold is easy to build during the factory prefabrication production process, the connection method of the longitudinal stress-bearing steel bars 2 is flexible and convenient, the on-site splicing and pouring process is simple, and it is easier to ensure the construction quality.

[0037] Specifically, the concrete shell 11 is a cylindrical shell with openings at both ends, the centerline direction of the prefabricated frame column 1 is longitudinal, and the inner ribs 12 are arranged in the concrete shell 11 along the longitudinal direction. Optionally, the cross section of the concrete shell 11 is a square frame, and the two inner ribs 12 are arranged in a "cross" shape. The sides of the two inner ribs 12 are fixed on the inner wall of the concrete shell 11. The inner ribs 12 divide the space in the concrete shell 11 into four through cavities 14 evenly along the longitudinal direction, which are used to pour concrete in the through cavities 14 on site to form an assembled concrete composite column. The cross-sectional shape of the concrete shell 11 and the inner ribs 12 can also be selected to be set to other shapes according to the structure and force requirements.

[0038] like Figure 2As shown, the steel skeleton 13 includes tension bars 131, structural bars 132, angle bars 133 and stirrups 134. The structural bars 132 and angle bars 133 are arranged longitudinally, and the tension bars 131 and stirrups 134 are arranged transversely. The tension bars 131, structural bars 132, angle bars 133 and stirrups 134 are crisscrossed and tied to form the steel skeleton 13 of the prefabricated frame column 1, which is used to be embedded in the concrete shell 11 and the inner ribs 12. The four angle bars 133 are respectively embedded in the four right angles of the concrete shell 11, and the four structural bars 132 are respectively embedded in the midpoints of the four frames of the concrete shell 11. There are multiple stirrups 134, which are evenly distributed in the concrete shell 11 along the longitudinal direction of the precast frame column 1. Each stirrup 134 surrounds the outside of the four corner bars 133 and the four structural bars 132. After a circle in the concrete shell 11, the two ends of the stirrup 134 cross at one of the corner bars 133 to form a stirrup hook 1341. There are also multiple tie bars 131, which are evenly distributed in the inner rib 12 along the longitudinal direction of the precast frame column 1. On the cross section of the precast frame column 1, two tie bars 131 cross to form a "cross" shape. The two ends of each tie bar 131 surround the outer periphery of the four structural bars 132 and form a tie hook 1311. The stirrup hook 1341 and the tie hook 1311 are set according to the specification requirements, and the ends can extend out of the concrete shell, and part of them are located in the through cavity 14.

[0039] It should be noted that, in this embodiment, the thickness of the concrete shell 11 can be reduced due to the provision of the inner ribs 12. Since the structural bars 132, the angle bars 133 and the stirrups 134 are all wrapped in the concrete shell 11, the diameters of the structural bars 132, the angle bars 133 and the stirrups 134 are all relatively small.

[0040] The concrete hollow composite column of this embodiment increases the rationality of the force of the prefabricated frame column 1 by setting the inner ribs 12, reduces the breakage rate during stacking, transportation and hoisting, and can also reduce the thickness of the concrete shell 11 and reduce the overall weight of the prefabricated frame column 1 while having the same force-bearing capacity; by setting the inner ribs 12, the tensioning bars 131 can be wrapped, thereby reducing the corrosion rate of the exposed steel skeleton 13 during the production and storage of prefabricated columns in the factory; in addition, the frame structure of the concrete shell 11 and the inner ribs 12 has a regular shape, is easy to be processed using a mold, has a high degree of standardization, is highly scalable, and reduces construction time.

[0041] like Figure 1 and Figure 2As shown, the longitudinal stress-bearing steel bars 2 are multiple large-diameter longitudinal stress-bearing steel bars. Before on-site pouring, multiple longitudinal stress-bearing steel bars 2 are inserted into the through cavity 14 along the longitudinal direction of the prefabricated frame column 1 according to the stress conditions, and are abutted against the required position of the inner wall of the concrete shell 11. After on-site pouring, the longitudinal stress-bearing steel bars 2 are fixedly combined with the prefabricated frame column 1 as a whole, thereby improving the longitudinal stress-bearing capacity of the concrete hollow composite column.

[0042] Preferably, both ends of the longitudinal stress-bearing steel bars 2 are provided with connection parts 21 for longitudinal connection of the longitudinal stress-bearing steel bars 2 between two adjacent layers of composite columns, and the connection parts 21 can be provided as a straight thread connection structure or a plug-in connection structure. After the composite column with the longitudinal stress-bearing steel bars 2 inserted is hoisted into place, the longitudinal stress-bearing steel bars 2 are butted with the longitudinal stress-bearing steel bars 2 of the lower column, and after the longitudinal stress-bearing steel bars 2 are connected, the two layers of concrete shells are fixedly connected, and finally concrete is poured in the through cavity 14 to form an integral assembled concrete composite column.

[0043] In this embodiment, the prefabricated frame column 1 and the longitudinal stress-bearing steel bars 2 are configured as separate components, and the longitudinal stress-bearing steel bars 2 are arranged during the cast-in-place process, so that the connection of the longitudinal stress-bearing steel bars 2 is easy to construct, which significantly improves the construction efficiency and the connection quality of the concrete composite column.

[0044] like Figure 1 and Figure 2 As shown, the inner rib 12 is provided with a transverse through-cavity connecting hole 121, so that adjacent through-cavities 14 can be transversely connected at different longitudinal positions, so that the concrete poured on site can flow between the various through-cavities 14, which plays a role in enhancing the integrity between the cast-in-place concrete and the prefabricated frame column 1, and also releases pressure during the cast-in-place concrete construction process to reduce the generation of bubbles.

[0045] In order to further enhance the integrity between the cast-in-place concrete and the prefabricated frame column 1, the inner wall of the concrete shell 11 and the surface of the inner rib 12 are set to be rough surfaces to reduce cracks caused by volume shrinkage during the solidification process of the cast-in-place concrete and improve the quality of the concrete hollow composite column.

[0046] Preferably, Figure 3 As shown, the prefabricated frame column 1 is also provided with a recessed end cap 15, and the two ends of the inner rib 12 are recessed inward relative to the two ends of the concrete shell 11, which is used to accommodate the cast-in-place concrete as a whole in the prefabricated shell 11 at the connection between the two layers of prefabricated frame columns 1, which is conducive to forming a solid whole between adjacent superimposed columns during the construction positioning process.

[0047] Example 2

[0048] like Figure 4As shown, the difference between the concrete hollow composite column provided in this embodiment and that in Embodiment 1 is that, on the cross section inside the inner rib, each inner rib 12 is wrapped with a plurality of tie rods 131 , and the stirrup hooks 1341 and the tie rod hooks 1311 are both pre-embedded in the inner rib 12 .

[0049] For large-sized hollow concrete composite columns, multiple tie bars 121 need to be arranged on the cross section in the prefabricated frame 1. It is difficult to place the mold in the prefabrication process with more tie bars 121. Preferably, in this embodiment, the tie bars 121 are arranged in a "well" shape on the cross section, and two tie bars 121 are wrapped in each inner rib 12. Due to the increase in the thickness of the inner rib 12, the tie bar hook 1311 can be embedded in the inner rib 12.

[0050] Furthermore, the stirrup hook 1341 of the stirrup 134 is tied to the structural reinforcement 132 , and the stirrup hook 1341 is also embedded in the inner rib 12 .

[0051] The tie bar hooks 1311 and stirrup hooks 1341 are all embedded in the inner ribs 12, so that all the steel skeletons 13 are embedded in the prefabricated outer shell 11 or the inner ribs 12. They have regular shapes and are easy to process using molds, which improves the degree of standardization and is suitable for promotion and application. It also makes the construction of the cast-in-place section simpler and easier.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A concrete hollow composite column, characterized in that: It comprises a prefabricated frame column (1) and longitudinal force-bearing steel bars (2), wherein the prefabricated frame column (1) comprises a concrete shell (11), inner ribs (12) and a steel skeleton (13); The inner ribs (12) are located inside the concrete shell (11) and are arranged along the longitudinal direction of the prefabricated frame column (1), and the inner ribs (12) evenly divide the space inside the concrete shell (11) into a plurality of longitudinally penetrating cavities (14); The steel bar skeleton (13) comprises tension bars (131) and structural bars (132); the tension bars (131) are prefabricated in the inner rib (12) and arranged along the cross section of the inner rib (12); a plurality of the tension bars (131) are evenly distributed along the longitudinal direction of the prefabricated frame column (1); the structural bars (132) are arranged in the concrete shell (11) along the longitudinal direction of the prefabricated frame column (1); both ends of the plurality of tension bars (131) are provided with tension bar hooks (1311); and the plurality of tension bar hooks (1311) are all surrounded on the outer circumference of the structural bars (132); The longitudinal stress-bearing steel bars (2) and the prefabricated frame column (1) are separate components, and a plurality of the longitudinal stress-bearing steel bars (2) are inserted into the through cavity (14) in the longitudinal direction of the prefabricated frame column (1) before casting.

2. The hollow composite concrete column according to claim 1, characterized in that: Connecting parts (21) are provided at both ends of the longitudinal stress-bearing steel bars (2), and the connecting parts (21) are used for longitudinal connection between the longitudinal stress-bearing steel bars (2).

3. The hollow composite concrete column according to claim 2, characterized in that: The connection portion (21) is a straight thread connection or a plug-in connection structure.

4. The hollow composite concrete column according to claim 2, characterized in that: The cross section of the inner rib (12) is cross-shaped.

5. The hollow composite concrete column according to claim 2, characterized in that: The tie bars (131) are arranged in a cross shape on the cross section of the inner rib (12).

6. The hollow composite concrete column according to claim 5, characterized in that: The tie bars (131) are arranged in a "well" shape on the cross section of the inner rib (12).

7. The hollow composite concrete column according to claim 6, characterized in that: The steel bar skeleton (13) further comprises stirrups (134), the ends of the stirrups (134) are provided with stirrup hooks (1341), and the stirrup hooks (1341) and the tensioning hooks (1311) are both located inside the inner rib (12).

8. The hollow composite concrete column according to any one of claims 1 to 7, characterized in that: The inner rib (12) is provided with a transversely penetrating through-cavity communication hole (121), and a plurality of the through-cavity communication holes (121) are evenly distributed along the longitudinal direction of the inner rib (12).

9. The hollow composite concrete column according to any one of claims 1 to 7, characterized in that: The prefabricated frame column (1) is also provided with a recessed end cap (15), and the two ends of the inner rib (12) are recessed inwardly relative to the two ends of the concrete shell (11).

10. The hollow composite concrete column according to any one of claims 1 to 7, characterized in that: The inner wall of the concrete shell (11) and the surfaces of the inner ribs (12) are both provided with rough surfaces.

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