Curtain wall steel stand column and top-down installation construction method

Abstract

The invention relates to a curtain wall steel stand column and a top-down installation construction method, and relates to the technical field of curtain wall structures, the steel stand column comprises a lower-layer embedded part embedded in the upper end of a lower-layer floor slab, the upper end of the lower-layer embedded part is fixedly connected with a positioning assembly used for positioning the steel stand column, and the steel stand column is placed on the positioning assembly; an upper-layer embedded part is arranged at the upper end of the steel stand column, and when the steel stand column is installed on the lower-layer embedded part, the upper-layer embedded part extends to the height of the upper-layer floor. During construction, the upper-layer embedded part and the steel stand column are welded in advance, then the upper-layer embedded part is placed on the positioning assembly, the upper-layer floor slab extends to the height of the upper-layer floor slab at the moment, installation of the steel stand column is completed, the structure is simple, installation is convenient, installation convenience is high, and the construction speed is high.

Description

Technical Field

[0001] The present application relates to the technical field of curtain wall structures, and in particular to a curtain wall steel column and a reverse installation construction method. Background Art

[0002] With the development of the construction field, people have higher requirements for the artistic beauty of building facade effects. Curtain walls are increasingly used as external protective structures and decorative facades. Building curtain walls are usually composed of panels and supporting structures (steel columns, aluminum beams, aluminum columns, glass ribs, etc.).

[0003] When installing existing curtain walls, usually after the main reinforced concrete structure is completed, the external curtain wall support structure is installed and constructed, which has the following defects: 1. The construction period is long and is not conducive to the development of curtain wall and subsequent work; 2. If the floor where the external curtain wall needs to be installed is high, a separate operating platform needs to be set up on the lower floor slab when installing the curtain wall steel columns, so that the staff can install the curtain wall steel columns between the lower floor slab and the upper floor slab. The additional labor and material costs are high and the safety management is more difficult. 3. For floors with higher heights, such as factory buildings with a height of more than 7.5m, after the welding construction of the embedded parts of the steel columns is completed, it is inconvenient to inspect the welds, which is not conducive to quality control. Summary of the invention

[0004] In order to solve the above problems, the present application provides a curtain wall steel column and a reverse installation construction method.

[0005] In the first aspect, the present application provides a curtain wall steel column, which adopts the following technical solution: A curtain wall steel column comprises a lower embedded part embedded in the upper end of a lower floor slab, the upper end of the lower embedded part is fixedly connected with a positioning assembly for positioning the steel column, the steel column is placed on the positioning assembly, the upper end of the steel column is provided with an upper embedded part, and when the steel column is installed on the lower embedded part, the upper embedded part extends to the height of the upper floor slab.

[0006] By adopting the above technical solution, during construction, the upper embedded parts are welded to the steel columns in advance, and then the upper embedded parts are placed on the positioning components. The upper floor slab is now extended to the height of the upper floor slab, and the installation of the steel columns is completed. The structure is simple, the installation is convenient, the installation convenience is high, and the construction speed is fast.

[0007] Optionally, a plurality of lifting ears are provided on the upper end of the steel column.

[0008] By adopting the above technical solution, when installing the steel column, the steel wire rope and the lifting lug can be fixed by operating the crane, and then the steel column can be lifted by lifting the lifting lug, thereby improving the convenience of lifting the steel column and the convenience of constructing the steel column.

[0009] In the second aspect, the present application provides a reverse installation construction method for curtain wall steel columns, which adopts the following technical solution: A reverse installation construction method for curtain wall steel columns comprises the following steps: S1: embed the lower embedded parts into the lower floor slab; S2: weld the upper embedded parts to one end of the steel column in the length direction on the ground, and weld several lifting ears to the steel column; S3: hoist the steel column to the upper end of the lower embedded part for installation; S4: Reinforce the installed steel columns; S5: Pass the upper floor slab reinforcement through the upper embedded parts, and fine-tune the verticality of the steel columns and the upper embedded parts; S6: pouring the upper floor slab; S7: Weld the steel columns to the lower embedded parts.

[0010] Optionally, after step S2, the following steps are further included: Four positioning angle steels are welded to the upper end of the lower embedded parts to form a square.

[0011] Optionally, the specific construction steps of step S3 include: using the steel wire rope of the crane to hang the lifting lug, lifting the steel column, vertically hoisting the steel column to the upper end of the lower embedded part, and placing the upper embedded part at the height of the upper floor slab.

[0012] Optionally, the specific construction steps of step S1 include: marking the positioning line of the lower embedded parts on the upper end surface of the lower floor slab steel bars, placing the lower embedded parts on the positioning line, re-measuring the position of the lower embedded parts, and then pouring concrete for the lower floor slab, and after completing the pouring of the lower floor slab, re-measuring the position of the lower embedded parts again.

[0013] Optionally, the specific construction steps of step S4 include: setting up a support frame at the upper end of the lower floor slab, and installing a plurality of reinforcement rods for supporting steel columns on the support frame.

[0014] Optionally, after step S4, the method further includes: retesting and adjusting the steel columns.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. During construction, the upper embedded parts are welded to the steel columns in advance, and then the upper embedded parts are placed on the positioning components, and then the upper embedded parts are inserted into the inside of the installation holes to complete the installation of the steel columns. The structure is simple and the installation is convenient. The installation of the steel columns can be completed during the construction of the reinforced concrete structure, which changes the construction sequence in the prior art. The installation is more convenient and the construction speed is faster, which is conducive to the convenience of subsequent installation of the curtain wall. 2. When installing the steel column, the steel wire rope and the lifting lug can be fixed by operating the crane, and then the steel column can be lifted by lifting the lifting lug, thereby improving the convenience of lifting the steel column and thus improving the convenience of constructing the steel column. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the lower layer embedded parts of a curtain wall steel column provided in an embodiment of the present application.

[0017] Figure 2 It is a schematic diagram of the overall structure of a curtain wall steel column provided in an embodiment of the present application.

[0018] Figure 3 It is a schematic diagram of a steel column in a curtain wall steel column provided in an embodiment of the present application.

[0019] Figure 4 It is a flow chart of a reverse installation construction method of a curtain wall steel column provided in an embodiment of the present application.

[0020] Explanation of the reference numerals: 1. lower floor slab; 2. lower embedded parts; 21. positioning assembly; 22. positioning angle steel; 3. steel column; 4. upper embedded parts; 5. lifting lug; 6. steel wire rope; 7. reinforcement rod; 8. support frame; 81. external frame; 9. upper floor slab. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0022] In a first aspect, an embodiment of the present application discloses a curtain wall steel column.

[0023] Reference Figure 1 and Figure 2 A curtain wall steel column includes a lower embedded part 2 embedded in the upper end of a lower floor slab 1, the lower embedded part 2 includes a lower embedded plate, the upper end of the lower embedded plate is welded with a positioning component 21 for fixing a steel column 3, the positioning component 21 includes four positioning angle steels 22, the four positioning angle steels 22 are all welded to the upper end surface of the lower embedded plate, and the four positioning angle steels 22 form a square.

[0024] Reference Figure 2 and Figure 3An upper embedded part 4 is welded to one end of the steel column 3 in the length direction, and lifting ears 5 are welded to both sides of the steel column 3 in the length direction. When installing the steel column 3, the steel wire rope 6 of the crane is used to fix the two lifting ears 5, and then the steel column 3 is lifted and placed inside the square surrounded by four positioning angle steels 22.

[0025] Reference Figure 2 and Figure 3 At this time, the upper embedded parts 4 extend to the height of the upper floor slab 9, and then the staff can erect steel bars on the upper floor slab 9, and then cast the upper floor slab 9, and then weld the steel columns 3 to the lower embedded plates to complete the construction of the steel columns 3. The structure is simple and the construction is convenient. The installation and construction of the steel columns 3 can be completed during the construction of the reinforced concrete structure, which changes the construction sequence in the prior art, has a higher installation convenience and a faster construction speed, and is conducive to the convenience of subsequent installation of the curtain wall.

[0026] The working principle of a curtain wall steel column in an embodiment of the present application is as follows: embed the lower embedded plate, weld the positioning angle steel 22 on the lower embedded plate, place the lower end of the steel column 3 in the positioning angle steel 22 for installation, and at this time, the upper embedded part 4 extends to the height of the upper floor slab 9, and then the staff can erect steel bars on the upper floor slab 9, and then cast the upper floor slab 9, and then weld the steel column 3 to the lower embedded plate to complete the construction of the steel column 3. The installation construction of the steel column 3 can be completed during the construction of the reinforced concrete structure, which changes the construction sequence in the prior art, has a higher installation convenience and a faster construction speed, and is conducive to the convenience of subsequent installation of the curtain wall.

[0027] In a second aspect, an embodiment of the present application discloses a reverse installation construction method for curtain wall steel columns.

[0028] A reverse installation construction method for curtain wall steel columns comprises the following steps: S1: Embed the lower embedded part 2 into the lower floor slab 1. The lower embedded part 2 is a lower embedded plate. The positioning line of the lower embedded plate is marked on the upper end surface of the steel bar of the lower floor slab 1. The lower embedded plate is placed on the positioning line, the position of the lower embedded plate is remeasured, and then the lower floor slab 1 is poured with concrete. After the lower floor slab 1 is poured, the position of the lower embedded plate is remeasured again. If the position of the lower embedded plate is deviated, the position of the lower embedded plate is adjusted in time, thereby improving the accuracy of the subsequent installation of the steel column 3.

[0029] S2: weld the upper embedded part 4 to one end of the steel column 3 in the length direction on the ground, and weld the two lifting ears 5 to the steel column 3. Welding the steel column 3 on the ground is easy to control and can ensure the construction quality of welding; then perform non-destructive welding testing to improve the welding quality between the steel column 3 and the upper embedded part 4 and the two lifting ears 5, thereby improving the stability of subsequent lifting and installation of the steel column 3.

[0030] S201: four positioning angle steels 22 are welded to the upper end of the lower embedded part 2 to form a square.

[0031] S3: Lift the steel column 3 to the upper end of the lower embedded part 2 for installation. Use the steel wire rope 6 of the crane to lift the lifting lug 5, lift the steel column 3, and vertically lift the steel column 3 to the upper end of the lower embedded part 2, and place the upper embedded part 4 at the height of the upper floor 9; the staff can hang the lifting lug 5 on a lifting tool such as a tower crane or a car crane, and then use the tower crane or car crane to lift the steel column 3, and then lift the lower end of the steel column 3 between the four positioning angle steels 22, and use the four positioning angle steels 22 to limit the horizontal displacement of the steel column 3, and then make a preliminary adjustment to the verticality of the steel column 3.

[0032] S4: Reinforce the installed steel columns 3; set up a support frame 8 at the upper end of the lower floor 1, and install a number of reinforcing rods 7 for supporting the steel columns 3 on the support frame 8 to reinforce the steel columns 3 and limit the horizontal displacement of the steel columns 3; it can also reduce the impact on the steel columns 3 and the upper embedded parts 4 during the construction of the upper floor 9.

[0033] S401: Install the outer frame 81 on the support frame 8, the outer frame 81 is at the same height as the support frame 8, and the outer frame 81 is located outside the lower floor 1. The staff can set up the skirting board and the scaffolding board on the outer frame 81, and then re-measure and adjust the steel column 3 and the upper embedded parts 4. The staff can stand on the scaffolding board to adjust the steel column 3; there is no need to set up a separate operating platform, which can effectively save the labor and material costs of setting up the platform and reduce costs.

[0034] S402: The upper floor slab 9 is supported at the upper end of the support frame 8, and then the steel bars of the upper floor slab 9 are tied on the upper floor slab 9.

[0035] S5: After passing the steel bars of the upper floor slab 9 through the upper embedded parts 4 and tying the steel bars of the upper floor slab 9, fine-adjust the verticality of the steel columns 3 and the upper embedded parts 4.

[0036] S6: pouring the upper floor slab 9; in the process of pouring the upper floor slab 9, avoid pouring concrete on the upper embedded parts 4 and the steel columns 3, and perform vibrating at a distance of 4500mm from the upper embedded parts to make the concrete flow to the upper embedded parts 4 and the steel columns 3; when vibrating the concrete, use the edge of the vibration radius of the vibrating rod to vibrate the concrete at the upper embedded parts 4 and the steel columns 3 to reduce the direct contact of the vibrating rod with the upper embedded parts 4 and the steel columns 3, and re-measure and fine-tune the elevation, horizontal position and verticality of the steel columns 3 during and after the pouring process.

[0037] S7: Weld the steel column 3 to the lower embedded part 2.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A curtain wall steel column, comprising a lower embedded part (2) embedded in the upper end of a lower floor slab (1), characterized in that: The upper end of the lower embedded part (2) is fixedly connected to a positioning assembly (21) for positioning the steel column (3), the steel column (3) is placed on the positioning assembly (21), and the upper end of the steel column (3) is provided with an upper embedded part (4), and when the steel column (3) is installed on the lower embedded part (2), the upper embedded part (4) extends to the height of the upper floor slab (9).

2. The curtain wall steel column according to claim 1, characterized in that: The upper end of the steel column (3) is provided with a plurality of lifting ears (5).

3. A reverse installation construction method for curtain wall steel columns, characterized in that: The reverse installation construction of the curtain wall steel column described in claim 2 comprises the following steps: S1: embedding the lower embedded part (2) into the lower floor slab (1); S2: welding the upper embedded part (4) to one end of the steel column (3) in the length direction on the ground, and welding a plurality of lifting ears (5) to the steel column (3); S3: hoisting the steel column (3) to the upper end of the lower embedded part (2) for installation; S4: Reinforce the installed steel columns (3); S5: passing the steel bars of the upper floor slab (9) through the upper embedded parts (4), and finely adjusting the verticality of the steel columns (3) and the upper embedded parts (4); S6: pouring the upper floor slab (9); S7: Welding the steel column (3) to the lower embedded part (2).

4. The reverse installation construction method of a curtain wall steel column according to claim 3 is characterized in that: After step S2, it also includes: Four positioning angle steels (22) are welded to the upper end of the lower embedded part (2), and the four positioning angle steels (22) are surrounded into a square.

5. The reverse installation construction method of a curtain wall steel column according to claim 3 is characterized in that: The specific construction steps of step S3 include: using the steel wire rope (6) of the crane to hang the lifting lug (5), lifting the steel column (3), vertically hoisting the steel column (3) to the upper end of the lower embedded part (2), and placing the upper embedded part (4) at the height of the upper floor (9).

6. The reverse installation construction method of a curtain wall steel column according to claim 3 is characterized in that: The specific construction steps of step S1 include: marking the positioning line of the lower embedded part (2) on the upper end surface of the steel bar of the lower floor slab (1), placing the lower embedded part (2) on the positioning line, re-measuring the position of the lower embedded part (2), and then pouring concrete on the lower floor slab (1). After the pouring of the lower floor slab (1) is completed, re-measuring the position of the lower embedded part (2) again.

7. The reverse installation construction method of a curtain wall steel column according to claim 3 is characterized in that: The specific construction steps of step S4 include: setting up a support frame (8) at the upper end of the lower floor slab (1), and installing a plurality of reinforcing rods (7) for supporting the steel columns (3) on the support frame (8).

8. The reverse installation construction method of a curtain wall steel column according to claim 3 is characterized in that: After step S4, the method further includes: retesting and adjusting the steel column (3).

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