Prefabricated hollow column

Abstract

The utility model provides a prefabricated hollow column which comprises a column body, a cavity is arranged in the column body, a semi-grouting sleeve is pre-buried at the bottom of the column body, an extending steel bar is arranged above the top surface of the column body, the extending steel bar is a hollow column main bar, the lower end of the extending steel bar is connected with the semi-grouting sleeve, and a composite stirrup is arranged in the cavity. The prefabricated hollow column is simple in structure and internally hollow, the problem that the prefabricated column is difficult to light is solved, the composite stirrups are arranged, the stress performance of the prefabricated column in later use is enhanced, and the semi-grouting sleeve is adopted, so that the connection strength is guaranteed.

Description

Technical Field

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

[0002] With the progress of urban construction, the development of prefabricated construction technology has attracted more and more attention, and its advantages such as high efficiency, high quality, safety and environmental protection have become more and more prominent. However, at present, prefabricated technology is still limited to panels and wall components, and prefabricated column technology is rarely used.

[0003] Application number: CN201710951760.4: An assembled prefabricated hollow column, wherein the middle of the prefabricated hollow column is hollow; stress-bearing steel bars extend from both ends of the prefabricated hollow column; the stress-bearing steel bars extending from both ends of the prefabricated hollow column are of different lengths; the stress-bearing steel bars are staggeredly connected by mechanical connection or grouting connection; the stress-bearing steel bar ends are tapped or shaped before the staggered connection; the stress-bearing steel bars of the prefabricated hollow column extend out to a length greater than 200 mm; a steel cage is inserted in the prefabricated hollow column. The prefabricated hollow column of this patent has a complex structure, low connection strength and high assembly difficulty. Utility Model Content

[0004] In order to solve the above problems, the utility model aims to propose a prefabricated hollow column, which promotes the application of prefabricated columns and solves the assembly problem of vertical structural members under the premise of satisfying structural safety.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A prefabricated hollow column comprises a column body, wherein a cavity is arranged in the column body, a semi-grouting sleeve is pre-buried at the bottom of the column body, protruding steel bars are arranged above the top surface, the protruding steel bars are main bars of the hollow column, and the lower ends are connected to the semi-grouting sleeve, and composite stirrups are arranged in the cavity.

[0007] Furthermore, a column rectangular keyway is provided on the bottom surface of the column, and an exhaust pipe is connected to the upper end of the column rectangular keyway.

[0008] Furthermore, the lower end of the exhaust pipe is connected to the center of the rectangular keyway of the column, and the upper end of the exhaust pipe is arranged on one side of the lower end of the column.

[0009] Furthermore, a plurality of air holes are arranged at intervals along the length direction of the exhaust pipe.

[0010] Furthermore, a plurality of grouting holes are arranged on the side of the column.

[0011] Furthermore, hanging rings are provided on both sides of the top surface of the column.

[0012] Furthermore, the upper end of the cavity is flush with the concrete top surface of the column.

[0013] Beneficial effects: The prefabricated hollow column of the utility model has a simple structure and an internal hollow structure, which solves the problem that the prefabricated column is difficult to lighten. Composite stirrups are arranged to enhance the stress performance of the prefabricated column during later use. A semi-grouting sleeve is used to ensure the connection strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the internal structure of the prefabricated hollow column according to an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the prefabricated hollow column according to an embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the top surface structure of the prefabricated hollow column according to an embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the bottom structure of the prefabricated hollow column described in an embodiment of the utility model. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0020] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0021] Example 1

[0022] See also Figure 1-4 A prefabricated hollow column comprises a column body 1, wherein a cavity 2 is arranged in the column body 1, a semi-grouting sleeve 5 is pre-buried at the bottom of the column body 1, and protruding steel bars 3 are arranged above the top surface. The protruding steel bars 3 are the main bars of the hollow column, and the lower ends are connected to the semi-grouting sleeve 5, and composite stirrups 8 are arranged in the cavity 2.

[0023] The prefabricated hollow column of this embodiment has a simple structure and an internal hollow structure, which solves the problem that the prefabricated column is difficult to lighten. Composite stirrups are provided to enhance the stress performance of the prefabricated column during later use, and a semi-grouting sleeve is used to ensure the connection strength.

[0024] In a specific example, a column rectangular key groove 7 is provided on the bottom surface of the column 1 , and an exhaust pipe 6 is connected to the upper end of the column rectangular key groove 7 .

[0025] This embodiment uses the rectangular keyway in the column in conjunction with the exhaust pipe to exhaust air when pouring concrete for the prefabricated hollow column (in the prefabrication stage and the later assembly stage), thereby preventing bubbles from appearing in the concrete and improving the quality of the poured concrete. In addition, the rectangular keyway in the column of this embodiment can provide positioning for the later installation of the prefabricated hollow column.

[0026] In a specific example, the lower end of the exhaust pipe 6 is connected to the center of the rectangular key groove 7 of the column, and the upper end of the exhaust pipe 6 is arranged on one side of the lower end of the column 1.

[0027] The exhaust pipe of this embodiment is arranged at the lower center, which can improve the exhaust efficiency, improve the casting quality of the prefabricated hollow column during the concrete casting stage, and improve the strength of the hollow column.

[0028] In a specific example, a plurality of air holes 601 are arranged at intervals along the length direction of the exhaust pipe 6 .

[0029] The exhaust pipe of this embodiment can improve the exhaust efficiency and the manufacturing strength of the prefabricated hollow column through the air holes distributed at intervals.

[0030] In a specific example, a plurality of grouting holes 101 are provided on the side of the column 1 .

[0031] When the prefabricated hollow column of this embodiment is installed and assembled, grouting can be performed on site through a plurality of grouting holes.

[0032] In a specific example, hanging rings 4 are provided on both sides of the top surface of the column 1 .

[0033] This embodiment facilitates the lifting and installation positioning of the prefabricated hollow column by means of a lifting ring.

[0034] In a specific example, the upper end of the cavity 2 is flush with the concrete top surface of the column 1 .

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A prefabricated hollow column, characterized in that: The invention comprises a column (1), wherein a cavity (2) is provided in the column (1), a semi-grouting sleeve (5) is pre-buried at the bottom of the column (1), and protruding steel bars (3) are provided above the top surface, the protruding steel bars (3) are main bars of the hollow column, and the lower ends of the protruding steel bars (3) are connected to the semi-grouting sleeve (5), and composite stirrups (8) are provided in the cavity (2).

2. The prefabricated hollow column according to claim 1, characterized in that: The bottom surface of the column (1) is provided with a column rectangular keyway (7), and the upper end of the column rectangular keyway (7) is connected to an exhaust pipe (6).

3. The prefabricated hollow column according to claim 2, characterized in that: The lower end of the exhaust pipe (6) is connected to the center of the column rectangular keyway (7), and the upper end of the exhaust pipe (6) is arranged on one side of the lower end of the column (1).

4. The prefabricated hollow column according to claim 2, characterized in that: A plurality of air holes (601) are arranged at intervals in the length direction of the exhaust pipe (6).

5. The prefabricated hollow column according to claim 1, characterized in that: A plurality of grouting holes (101) are arranged on the side of the column (1).

6. The prefabricated hollow column according to claim 1, characterized in that: Hanging rings (4) are provided on both sides of the top surface of the column (1).

7. The prefabricated hollow column according to claim 1, characterized in that: The upper end of the cavity (2) is flush with the concrete top surface of the column (1).

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