Temporary supporting mechanism for concrete column replacement of housing construction project

Abstract

The utility model discloses a temporary supporting mechanism for concrete column replacement of a house building project, which comprises an upper-layer structural plate and a lower-layer structural plate, and concrete columns vertically penetrating through the upper-layer structural plate and the lower-layer structural plate are arranged on the upper-layer structural plate and the lower-layer structural plate. Angle steel is symmetrically arranged on the two sides of the concrete column body located above the upper-layer structural plate and the two sides of the concrete column body located below the lower-layer structural plate respectively, and a supporting steel pipe sequentially and vertically penetrating through the upper-layer structural plate and the lower-layer structural plate is arranged on the horizontal bearing face of each angle steel located below the lower-layer structural plate. A horizontally-arranged end socket steel plate is arranged at the top of each supporting steel pipe, a jack is arranged at the top of each end socket steel plate, and the jacking face of each jack abuts against the horizontal plane of the corresponding angle steel located above the upper-layer structural plate. The concrete column can be effectively disassembled, changed, replaced, reinforced and the like, construction is safe, the working face is sufficient, and the device can be widely applied to the field of building construction.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a temporary support mechanism for replacing concrete columns in building construction projects. Background Technology

[0002] When concrete strength is insufficient or design changes affect concrete strength, the demolition and replacement of concrete columns are usually involved. Using ordinary full-span scaffolding cannot provide the necessary working surface for demolition and replacement. Therefore, the following conditions must be met when demolishing and replacing concrete columns: First, the temporary support for the concrete column to be demolished must be stable, capable of replacing the entire load-bearing capacity of the column and creating a safe construction environment; second, the construction method must be convenient and reliable, without affecting the construction of other work surfaces. A temporary support method for demolishing and replacing concrete columns is needed that replaces the load-bearing capacity of the section to be replaced, not only requiring a small working area but also providing sufficient working space to ensure the safe and reliable demolition and replacement of the concrete column. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the above-mentioned background technology and provide a temporary support mechanism for the replacement of concrete columns in building construction projects, so that the concrete columns can be effectively dismantled, replaced and reinforced, with construction safety and sufficient working surface.

[0004] This utility model provides a temporary support mechanism for replacing concrete columns in building construction projects, comprising an upper structural slab and a lower structural slab. Concrete columns are vertically inserted through the upper and lower structural slabs. Angle steels are symmetrically arranged on both sides of the concrete columns above the upper structural slab and below the lower structural slab. Supporting steel pipes, sequentially vertically inserted through the upper and lower structural slabs, are arranged on the horizontal support surface of each angle steel below the lower structural slab. A horizontally arranged end plate is provided at the top of each supporting steel pipe, and a jack is provided at the top of each end plate. The lifting surface of the jack abuts against the horizontal surface of the corresponding angle steel above the upper structural slab.

[0005] In the above technical solution, the vertical surfaces of the angle steel symmetrically arranged on both sides of the concrete column are connected by multiple rows and columns of through bolts that pass through the concrete column.

[0006] In the above technical solution, stiffening ribs are provided between the horizontal and vertical surfaces of the angle steel.

[0007] In the above technical solution, each angle steel has multiple stiffening ribs, all arranged horizontally, and the stiffening ribs of the angle steel are staggered with each row of through bolts.

[0008] In the above technical solution, a sealing end plate is provided between the end plate and the corresponding angle steel horizontal plane, and a sealing end plate is provided on both sides of each jack.

[0009] In the above technical solution, each angle steel located below the lower structural plate is provided with a support node plate on its horizontal support surface, and the bottom of the support steel pipe is fixedly connected to the top surface of the support node plate.

[0010] In the above technical solution, there are two support node plates at the bottom of each supporting steel pipe, and a C40 inorganic grouting dense layer is provided between the two support node plates.

[0011] In the above technical solution, the support node plate is connected to the angle steel by M24 bolts.

[0012] In the above technical solution, the original reinforcing bars exposed in the replacement section of the concrete column between the upper and lower structural slabs are lapped and welded to the replacement reinforcing bars. The lap length is 5 times the diameter of the reinforcing bars, and binding wires are provided at the lap joints.

[0013] In the above technical solution, the stiffening rib is triangular.

[0014] This utility model relates to a temporary support mechanism for replacing concrete columns in building construction projects, and has the following beneficial effects:

[0015] This utility model provides a temporary support mechanism for replacing concrete columns in building construction projects. After using this mechanism for temporary support, concrete columns can be effectively dismantled, replaced, and reinforced, ensuring construction safety and providing ample working space. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the temporary support mechanism for replacing concrete columns in building construction projects according to this utility model.

[0017] Figure 2 This is a schematic diagram of the angle steel and support node plate in the temporary support mechanism for replacing concrete columns in building construction projects according to this utility model.

[0018] Figure 3 This is a schematic diagram showing the connection between the support node plate, M24 bolts and angle steel structure in the temporary support mechanism for replacing concrete columns in building construction projects according to this utility model.

[0019] Figure 4 This invention relates to the construction method of a temporary support structure for replacing concrete columns in building construction projects. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but these embodiments should not be construed as limiting the present invention.

[0021] See Figure 1 This utility model relates to a temporary support mechanism for replacing concrete columns in building construction projects. It includes an upper structural slab 6 and a lower structural slab 12. Concrete columns 14 are vertically inserted through the upper and lower structural slabs 6 and 12, respectively. Angle steel 1s are symmetrically arranged on both sides of the concrete columns 14 above the upper structural slab 6 and below the lower structural slab 12. Each angle steel 1 below the lower structural slab 12 has a horizontal support surface with columns sequentially vertically inserted through the upper structural slab 6 and 12. The lower structural plate 12 has supporting steel pipes 7, each of which has a horizontally arranged end plate 5 on top. Each end plate 5 has a jack 4 on top. The lifting surface of the jack 4 abuts against the horizontal surface of the corresponding angle steel 1 located above the upper structural plate 6. In this embodiment, the supporting steel pipe 7 is D219X10 (Q235B), and the angle steel 1 is L400X300X20. The bottom of the end plate 5 (30x250x250) is welded to the supporting steel pipe 7 to hold the jack 4.

[0022] The vertical surfaces of the angle steel 1 symmetrically arranged on both sides of the concrete column 14 are connected by multiple rows and columns of through bolts 2 that pass through the concrete column 14. In this embodiment, the angle steel 1 is fixed through the wall column by 12 M24 through bolts 2.

[0023] A sealing plate 3 is provided between the end cap steel plate 5 and the corresponding angle steel 1 at the horizontal plane. Each jack 4 has a sealing plate 3 on both sides. The height of the sealing plate 3 is obtained by measuring the final height of the jack 4. A total of four -12x200 sealing plates 3 are welded to both sides of the jack 4.

[0024] See Figure 2 Each angle steel 1 located below the lower structural plate 12 has a support node plate 9 on its horizontal support surface. The bottom of the supporting steel pipe 7 is fixedly connected to the top surface of the support node plate 9. In this embodiment, the supporting steel pipe 7 is fixed to the support node plate 9 by welding. The support node plate 9 is a 300x400x20 steel plate. Stiffening ribs 11 are provided between the horizontal and vertical surfaces of the angle steel 1. Each angle steel 1 has multiple stiffening ribs 11, all arranged horizontally. The stiffening ribs 11 of the angle steel 1 are staggered with each row of through bolts 2. In this embodiment, the stiffening ribs 11 are triangular. The stiffening ribs 11 ensure the stability of the angle steel 1.

[0025] Each supporting steel pipe 7 has two support node plates 9 at its bottom, and a C40 inorganic grouting dense layer 13 is provided between the two support node plates 9.

[0026] See Figure 3The support node plate 9 is connected to the angle steel 1 by M24 bolts 10.

[0027] The original reinforcing bars exposed in the replacement section 8 of the concrete column between the upper structural slab 6 and the lower structural slab 12 are lapped and welded to the replacement reinforcing bars. The lap length should be no less than 5 times the diameter of the reinforcing bar, and binding wires are provided at the lap joint of the reinforcing bars.

[0028] See Figure 4 The present invention relates to a construction method for a temporary support structure for replacing concrete columns in building construction projects, comprising the following steps:

[0029] S1. Drill holes in the upper structural plate 6 and lower structural plate 12 of the concrete column replacement section 8 that needs to be demolished and modified, and fix the angle steel 1 by through bolts 2.

[0030] S2. The concrete on the upper structural slab 6 and lower structural slab 12 of the concrete column replacement section 8 that needs to be demolished and modified is manually removed so that the supporting steel pipe 7 can be passed through.

[0031] S3. The support node plate 9 is connected to the top surface of the angle steel 1 below the lower structural plate 12 by M24 bolts 10;

[0032] S4. The support steel pipe 7 is fixed above the support node plate 9 by welding.

[0033] S5. The top of the supporting steel pipe 7 is welded with a head steel plate 5. A jack 4 is placed on the top surface of the head steel plate 5. The jack 4 is pre-jacked by lifting the angle steel 1 above the upper structural plate 6. The pre-jacking force is determined by calculation.

[0034] S6. After the jack 4 is pre-lifted into place, the jack 4 is replaced by welding the end-sealing steel plate 3 to ensure the jack 4 can be reused.

[0035] S7. After the concrete column 14 is supported by a temporary support structure and all the load-bearing capacity of the concrete column 14 is replaced, the concrete column replacement section 8 will be dismantled, replaced, or otherwise operated.

[0036] After the demolition and replacement of concrete column replacement section 8 is completed, the bolt holes of the through-wall column and the holes in the floor slab after the temporary support structure is removed are restored with inorganic grouting material. The strength grade of the grouting material is one level higher than that of the original concrete.

[0037] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0038] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A temporary support structure for replacing concrete columns in a building construction project, comprising an upper structural slab (6) and a lower structural slab (12), wherein concrete columns (14) are provided vertically through the upper structural slab (6) and the lower structural slab (12), characterized in that: Concrete column (14) above the upper structure plate (6) and below the lower structure plate (12) concrete column (14) both sides are respectively symmetrically provided with angle steel (1), the horizontal bearing surface of each angle steel (1) below the lower structure plate (12) is provided with support steel pipe (7) vertically through the upper structure plate (6) and the lower structure plate (12) in turn, the top of each support steel pipe (7) is provided with the head steel plate (5) arranged horizontally, the top of each head steel plate (5) is provided with the jack (4), the jacking surface of the jack (4) is in abutment with the horizontal surface of the corresponding angle steel (1) above the upper structure plate (6).

2. The temporary support mechanism for concrete column replacement of a building project according to claim 1, wherein: The vertical surface of the angle steel (1) symmetrically arranged on both sides of the concrete column (14) is connected through the through bolt (2) which passes through the concrete column (14) in multiple rows and multiple columns.

3. The temporary support mechanism for concrete column replacement of a building project according to claim 2, wherein: The horizontal surface and the vertical surface of the angle steel (1) are provided with stiffening ribs (11).

4. The temporary support mechanism for concrete column replacement of a building project according to claim 3, wherein: The stiffening ribs (11) of each angle steel (1) are multiple and arranged horizontally, and the stiffening ribs (11) of the angle steel (1) are arranged alternately with each column of through bolts (2).

5. The temporary support mechanism for concrete column replacement of a building project according to claim 4, wherein: The head steel plate (3) is arranged between the head steel plate (5) and the horizontal surface of the corresponding angle steel (1), and the head steel plate (3) is arranged on both sides of each jack (4).

6. The temporary support mechanism for concrete column replacement of a building project according to claim 5, wherein: The horizontal bearing surface of each angle steel (1) below the lower structure plate (12) is provided with a support node plate (9), and the bottom of the support steel pipe (7) is fixedly connected with the top surface of the support node plate (9).

7. The temporary support mechanism for concrete column replacement of a building project according to claim 6, wherein: The support node plate (9) at the bottom of each support steel pipe (7) is two, and a C40 inorganic grouting dense layer (13) is arranged between the two support node plates (9).

8. The temporary support mechanism for concrete column replacement of a building project according to claim 7, wherein: The support node plate (9) is connected with the angle steel (1) through the M24 bolt (10).

9. The temporary support mechanism for concrete column replacement of a building project according to claim 8, wherein: The exposed original reinforcement of the concrete column replacement section (8) between the upper structure plate (6) and the lower structure plate (12) is lap welded with the replacement reinforcement, the lap length is 5 times the diameter of the reinforcement, and the reinforcement lap joint is provided with a binding steel wire.

10. The temporary support mechanism for concrete column replacement of a building project according to claim 9, wherein: The stiffening rib (11) is triangular.

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