Hole plugging device and plugging construction method thereof

Abstract

According to the hole plugging device and the plugging construction method thereof, the problems that in existing underground engineering, a profile steel stand column is adopted as a temporary support, cutting construction needs to be conducted on the profile steel stand column after construction is completed, and a large number of steel resources are wasted are solved. The structure comprises a steel sleeve, a first water stop steel plate and a second water stop steel plate, the steel sleeve is arranged on the outer side of a profile steel stand column in a sleeving mode, a gap is formed between the steel sleeve and the profile steel stand column, the height of the steel sleeve is equal to the concrete pouring thickness of a basement bottom plate, the first water stop steel plate is connected to the inner wall of the steel sleeve, and the second water stop steel plate is connected to the outer wall of the steel sleeve. The construction method comprises the steps that after a cushion layer of the basement bottom plate is poured and before steel bars are bound, the steel sleeve is arranged on the outer side of the profile steel stand column in a sleeving mode, after concrete pouring of the basement bottom plate is completed and the design strength is achieved, the profile steel stand column is pulled out and conveyed to the designated position, and waterproof mortar is filled in an inner cavity of the steel sleeve and a reserved hole of the cushion layer to block the steel sleeve.

Description

Technical Field

[0001] The present invention relates to the technical field of underground engineering construction, and particularly relates to a hole plugging device and a plugging construction method thereof. Background Art

[0002] In urban construction, the development and utilization of underground space are becoming increasingly frequent, such as subways, underground parking lots, underground commercial facilities, etc. During the construction of the foundation pit retaining structure, steel section columns are usually used as temporary supports. After the completion of the underground project construction, the conventional practice is to cut and recycle the steel section columns above the surface of the basement floor, while the steel section columns below the surface of the basement floor are buried in the concrete structure, which not only increases the construction difficulty but also causes a large amount of waste of steel resources. Summary of the Invention

[0003] Aiming at the problem that in the existing underground engineering, steel section columns are used as temporary supports, and after the construction is completed, cutting construction needs to be carried out on the steel section columns, resulting in a large amount of waste of steel resources. The purpose of the present invention is to provide a hole plugging device and a plugging construction method thereof.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a hole plugging device, which includes: a steel casing, a first water stop steel plate and a second water stop steel plate. The steel casing is sleeved outside the steel section column, and there is a gap between the steel casing and the steel section column. The height of the steel casing is equal to the concrete pouring thickness of the basement floor. The first water stop steel plate is connected to the inner wall of the steel casing, and the second water stop steel plate is connected to the outer wall of the steel casing.

[0005] The hole plugging device of the present invention includes a steel casing that can be sleeved outside the steel section column, and the first water stop steel plate and the second water stop steel plate arranged on the inner and outer sides of the steel casing. After the cushion layer of the basement floor is poured and before the steel bars are tied, the steel casing is sleeved outside the steel section column. The concrete of the basement floor to be poured is poured in the area outside the steel casing. After the concrete is poured and reaches the designed strength, the steel section column is pulled out successively by a hydraulic press, and it is transported to the designated position by a hoisting machine; since there is a cavity between the steel casing and the steel section column and no concrete is poured, the steel section column can be quickly and completely pulled out from the basement floor, which is beneficial to the recycling and reuse of the steel section material, saving steel resources. Moreover, after the steel section column is pulled out, the inner cavity of the steel casing and the holes left in the cushion layer are filled with waterproof mortar to prevent water seepage in the basement floor.

[0006] Further, both the first water stop steel plate and the second water stop steel plate are vertically fixed in the middle of the steel casing. The first water stop steel plate is located in the gap between the steel casing and the steel section column and a gap is reserved between it and the steel section column.

[0007] Further, it also includes a waterproof mortar layer. After the steel H-pile column is pulled out, the inner cavity of the steel casing and the holes left in the cushion layer are filled with waterproof mortar to form the waterproof mortar layer.

[0008] Further, it also includes an end plate. After the inner cavity of the steel casing is filled with the waterproof mortar layer, the end plate covers the top of the steel casing and is welded to it.

[0009] In addition, the present invention also provides a construction method for hole plugging, the steps are as follows:

[0010] After the cushion layer of the basement floor slab is poured and before the steel bars are tied, a steel casing is sleeved outside the steel H-pile column. After the concrete of the basement floor slab is poured and reaches the design strength, the steel H-pile column is pulled out and transported to the designated position, and the inner cavity of the steel casing and the holes left in the cushion layer are filled with waterproof mortar to plug the steel casing.

[0011] In the construction method for hole plugging of the present invention, first, after the cushion layer of the basement floor slab is poured and before the steel bars are tied, a hole plugging device is sleeved outside the steel H-pile column. After the concrete of the basement floor slab is poured and reaches the design strength, a hydraulic press is used to pull out the steel H-pile column, and a hoisting machine transports it to the designated position. The inner cavity of the steel casing and the holes left in the cushion layer are filled with waterproof mortar to plug the steel casing. Compared with the existing method of cutting the steel H-pile column after construction is completed, since there is a cavity between the steel casing and the steel H-pile column and no concrete is poured, the steel H-pile column can be quickly and completely pulled out from the basement floor slab, which is beneficial to the recycling and reuse of steel materials and saves steel resources. Moreover, the inner cavity of the steel casing and the holes left in the cushion layer are filled with waterproof mortar, which can prevent the basement floor slab from seeping water.

[0012] Further, the steps also include: covering an end plate on the top of the steel casing, and the end plate is welded to the steel casing. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of an embodiment of the hole plugging device of the present invention;

[0014] Figure 2 is a schematic diagram before the steel H-pile column is pulled out in the hole plugging construction method of an embodiment of the present invention;

[0015] Figure 3 is a schematic diagram after the steel H-pile column is pulled out in the hole plugging construction method of an embodiment of the present invention.

[0016] The reference numerals in the drawings are as follows:

[0017] Steel H-pile column 1; Cushion layer 11; Basement floor slab 12; Waterproof mortar layer 14; Steel casing 21; Waterproof steel plate one 24; Waterproof steel plate two 25; End plate 26. Detailed Embodiments

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention. For the convenience of description, the "upper" and "lower" described below are in the same direction as the upper and lower of the accompanying drawings, but this cannot be a limitation to the technical solution of the present invention.

[0019] This embodiment takes the construction of an underground project as an example. The following combines Figures 1 to 3 to illustrate the hole plugging device of the present invention, which includes: a steel casing 21, a first waterstop steel plate 24 and a second waterstop steel plate 25. The steel section column 1 passes through the cushion layer 11 of the basement floor slab 12. The steel casing 21 is sleeved outside the steel section column 1, and there is a gap between the steel casing 21 and the steel section column 1. The height of the steel casing 21 is equal to the concrete pouring thickness of the basement floor slab 12. The first waterstop steel plate 24 is connected to the inner wall of the steel casing 21, and the second waterstop steel plate 25 is connected to the outer wall of the steel casing 21. The steel casing 21 and the waterstop steel plates in this embodiment are all made of 5-mm-thick steel plates.

[0020] The hole plugging device of the present invention includes a steel casing 21 that can be sleeved outside the steel section column 1, and the first waterstop steel plate 24 and the second waterstop steel plate 25 arranged on the inner and outer sides of the steel casing 21. After the cushion layer 11 of the basement floor slab 12 is poured and before the steel bars are tied, the steel casing 21 is sleeved outside the steel section column 1. The concrete of the basement floor slab 12 is poured in the area outside the steel casing 21. After the concrete is poured and reaches the design strength, the steel section column 1 is pulled out sequentially by a hydraulic press and transported to the designated position by a hoisting machine; since there is a cavity between the steel casing 21 and the steel section column 1 and no concrete is poured, the steel section column 1 can be quickly and completely pulled out from the basement floor slab 12, which is beneficial to the recycling and reuse of the steel section material, saves steel resources, and moreover, after the steel section column 1 is pulled out, the inner cavity of the steel casing 21 and the holes left in the cushion layer 11 are filled with waterproof mortar to prevent the basement floor slab 12 from seeping water.

[0021] As Figure 2 shown, both the first waterstop steel plate 24 and the second waterstop steel plate 25 are vertically fixedly connected to the middle of the steel casing 21. The first waterstop steel plate 24 is located in the gap between the steel casing 21 and the steel section column 1 and a gap is reserved between it and the steel section column 1. The waterstop steel plate can effectively prevent groundwater from leaking through the gap between the steel casing 21 and the concrete, ensuring the waterproof performance of the basement floor slab 12. A gap is reserved between the first waterstop steel plate 24 and the steel section column 1 to facilitate the smooth pulling out of the steel section column 1.

[0022] As Figure 3As shown, the hole plugging device further includes a waterproof mortar layer 14. After the steel section column 1 is pulled out, the inner cavity of the steel casing 21 and the holes left in the cushion layer 11 are filled with waterproof mortar to form the waterproof mortar layer 14, plugging the steel casing 21. The hole plugging device further includes an end plate 26. After the inner cavity of the steel casing 21 is filled with waterproof mortar, the end plate 26 covers the top of the steel casing 21 and is welded to it, further improving the overall waterproof performance of the basement floor slab 12. The end plate 26 in this embodiment is made of a 10-mm-thick steel plate.

[0023] The following combines Figures 1 to 3 to illustrate the hole plugging construction method of the present invention. The specific steps are as follows:

[0024] After the cushion layer 11 of the basement floor slab 12 is poured and before the steel bars are tied, a steel casing 21 is sleeved outside the steel section column 1. After the concrete of the basement floor slab 12 is poured and reaches the design strength, the steel section column 1 is pulled out by a hydraulic press and transported to a designated position by a hoisting machine. The inner cavity of the steel casing 21 and the holes left in the cushion layer 11 are filled with waterproof mortar to plug the steel casing 21.

[0025] For the hole plugging construction method of the present invention, first, after the cushion layer 11 of the basement floor slab 12 is poured and before the steel bars are tied, a hole plugging device is sleeved outside the steel section column 1. After the concrete of the basement floor slab 12 is poured and reaches the design strength, the steel section column 1 is pulled out by a hydraulic press and transported to a designated position by a hoisting machine. The inner cavity of the steel casing 21 and the holes left in the cushion layer 11 are filled with waterproof mortar to plug the steel casing 21. Compared with the existing method of cutting the steel section column 1 after construction, since there is a cavity between the steel casing 21 and the steel section column 1 and no concrete is poured, the steel section column 1 can be quickly and completely pulled out from the basement floor slab 12, which is beneficial to the recycling and reuse of steel materials and saves steel resources. Moreover, the inner cavity of the steel casing 21 and the holes left in the cushion layer 11 are filled with waterproof mortar, which can prevent the basement floor slab 12 from seeping water.

[0026] The above steps further include: covering an end plate 26 on the top of the steel casing 21, and the end plate 26 is fillet welded to the steel casing 21, further improving the waterproof performance of the basement floor slab 12.

[0027] The above description is only a description of the preferred embodiment of the present invention and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the field of the present invention based on the above disclosure belong to the scope of the claims.

Claims

1. A hole plugging device, characterized in that: It includes: Steel casing, waterstop steel plate 1 and waterstop steel plate 2, the steel casing is sleeved on the outside of the steel column, and a gap is provided between the steel casing and the steel column, the height of the steel casing is equal to the concrete pouring thickness of the basement floor, the waterstop steel plate 1 is connected to the inner wall of the steel casing, and the waterstop steel plate 2 is connected to the outer wall of the steel casing.

2. The hole plugging device according to claim 1, characterized in that: The waterstop steel plate 1 and the waterstop steel plate 2 are both vertically fixed to the middle of the steel casing. The waterstop steel plate 1 is located in the gap between the steel casing and the steel column, and a gap is reserved between the waterstop steel plate 1 and the steel column.

3. The hole plugging device according to claim 1, characterized in that: It also includes a waterproof mortar layer. After the steel column is pulled out, the inner cavity of the steel casing and the remaining holes in the cushion layer are filled with waterproof mortar to form a waterproof mortar layer.

4. The hole plugging device according to claim 3, characterized in that: It also includes an end plate. After the inner cavity of the steel casing is filled with a waterproof mortar layer, the end plate is covered on the top of the steel casing and is welded to the steel casing.

5. A hole plugging construction method using the hole plugging device according to any one of claims 1 to 4, characterized in that: Here are the steps: After the cushion layer of the basement floor is poured and before the steel bars are tied, a steel casing is installed on the outside of the steel column. After the concrete pouring of the basement floor is completed and reaches the designed strength, the steel column is pulled out and transported to the designated location. The inner cavity of the steel casing and the holes left in the cushion layer are filled with waterproof mortar to seal the steel casing.

6. The hole plugging construction method according to claim 5, characterized in that: The step also includes: covering the top of the steel casing with an end plate, and the end plate and the steel casing are connected by welding.

Images