Waterproof structure

Abstract

The utility model discloses a waterproof structure which comprises a first water stop steel plate and a second water stop steel plate. The first water stop steel plate is horizontally fixed in the latticed column, and the first water stop steel plate is connected with the inner wall of angle steel of the latticed column and serves as a support of the second water stop steel plate; a through hole allowing concrete to flow through is reserved in the first water stop steel plate. A horizontal second water stop steel plate is arranged above the first water stop steel plate; and a pouring vibration hole is formed in the second water stop steel plate. The latticed column has the advantages that the latticed column is supported and welded through the first water stop steel plate and the second water stop steel plate on the inner side so as to be sealed tightly, and the pouring vibration hole is reserved, so that internal water prevention of the latticed column is achieved, and the waterproof effect is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of waterproofing technology, specifically to a waterproofing structure. Background Technology

[0002] During the construction phase of underground foundation pits, due to the large excavation depth, internal supports are required at all corners to ensure that the deformation of the soil on both sides of the pit and surrounding buildings does not exceed the limits during excavation. Therefore, foundation pit design often incorporates lateral support structures as a lateral load-bearing system, such as horizontal reinforced concrete capping beams. These supports typically use lattice columns as uprights to support this lateral load-bearing system; lattice columns are mainly constructed by welding angle steel and connecting plates. In actual construction, the presence of lattice columns hinders the overall laying of waterproof membrane during basement floor waterproofing, making it difficult to reach the intersection of the lattice columns and the floor slab, resulting in poor waterproofing at these points. Furthermore, during rebar installation, the lattice columns obstruct the insertion of rebar, often leading workers to cut the rebar at these locations, altering the stress distribution on the rebar. Additionally, the lattice columns support the upper foundation pit support beams, and their later removal allows water to seep into the basement. Based on past experience, the quality of rebar and waterproofing work at lattice columns is difficult to guarantee, frequently resulting in leaks and making subsequent repairs difficult, time-consuming, and requiring extensive maintenance.

[0003] Therefore, it is necessary to improve existing technologies. Summary of the Invention

[0004] The purpose of this invention is to provide a waterproof structure that addresses the shortcomings of existing technologies and improves waterproof performance.

[0005] The technical solution adopted by this utility model is: a waterproof structure, including a first water-stop steel plate and a second water-stop steel plate;

[0006] The first water-stop steel plate is horizontally fixed inside the lattice column and is connected to the inner wall of the angle steel of the lattice column, serving as a support for the second water-stop steel plate; the first water-stop steel plate has through holes that allow concrete to flow through.

[0007] A horizontal second waterstop steel plate is installed above the first waterstop steel plate;

[0008] The second water-stop steel plate has a pouring and vibration hole that communicates with the through hole.

[0009] According to the above scheme, the waterproof structure also includes a third water-stop steel plate, the height of which is the same as that of the first water-stop steel plate; the third water-stop steel plate is horizontally fixed around the lattice column, and the inner side of the third water-stop steel plate is connected to the outer walls of the four angle steels of the lattice column and the outer edge of the first water-stop steel plate.

[0010] According to the above scheme, the outer side of the third water-stop steel plate is connected to a vertical fourth water-stop steel plate through a connecting corner piece.

[0011] According to the above scheme, the second water-stop steel plate is connected to the first water-stop steel plate by a plurality of fasteners; the fasteners include a water-stop vertical rod, an upper water-stop cap located at the upper end of the water-stop vertical rod, a lower water-stop cap located at the lower end of the water-stop vertical rod, and an upper water-stop pad and a lower water-stop pad located between the upper water-stop cap and the lower water-stop cap; the water-stop vertical rod passes through the first water-stop steel plate and the second water-stop steel plate; wherein the first water-stop steel plate is clamped between the lower water-stop cap and the lower water-stop pad, and the second water-stop steel plate is clamped between the upper water-stop cap and the upper water-stop pad.

[0012] According to the above scheme, the connecting corner piece is provided with a vertical first groove, a horizontal second groove, and a longitudinal third groove; the first groove is adapted to the vertical side of the fourth water-stop steel plate; the second groove is adapted to the horizontal side of the fourth water-stop steel plate and the horizontal side of the third water-stop steel plate; the third groove is adapted to the longitudinal side of the fourth water-stop steel plate and the longitudinal side of the third water-stop steel plate.

[0013] According to the above scheme, the first water-stop steel plate is formed by welding four individual units together, and a through hole is formed in the center of the four individual units.

[0014] According to the above scheme, the single unit is an L-shaped arc-cut water-stop steel plate, including two straight sections that fit against the inner wall of the angle steel, and an arc-shaped section connecting the ends of the two straight sections; the arc-shaped sections of the four units enclose each other to form a through hole.

[0015] According to the above scheme, the first and second water-stop steel plates are respectively welded to the angle steel of the lattice column.

[0016] According to the above scheme, the upper and lower water-stop caps are threadedly connected to the water-stop vertical rods respectively.

[0017] According to the above scheme, there are four third water-stop steel plates. The inner side of each third water-stop steel plate is welded to the outer wall of the angle steel of the lattice column, and the edges of two adjacent third water-stop steel plates are welded together.

[0018] The beneficial effects of this utility model are as follows:

[0019] (1) In this utility model, the lattice column is sealed tightly by welding the first and second water-stop steel plates on the inner side, and the pouring and vibration holes are reserved, thereby realizing the internal waterproofing of the lattice column and greatly improving the waterproofing effect; at the same time, it does not hinder the pouring and vibration of normal concrete. This waterproof structure is simple to construct and effectively solves the problem of internal waterproofing of the lattice column.

[0020] (2) The present invention welds the third water-stop steel plate horizontally around the perimeter of the lattice column and welds the fourth water-stop steel plate vertically through the connecting corner pieces, which reduces the situation where water under the basement floor continues to spread to the surrounding area along the lattice column and the third water-stop steel plate, reduces the risk of subsequent water leakage, and reduces the construction area for subsequent leakage plugging. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0022] Figure 2 for Figure 1 Top view.

[0023] Figure 3 This is a schematic diagram of the fastener structure in this embodiment.

[0024] Figure 4 This is a schematic diagram of the connecting corner piece in this embodiment.

[0025] Figure 5 This is a schematic diagram of the waterproofing construction of the basement floor slab in this embodiment.

[0026] Among them: 1. Angle steel; 2. Connecting plate; 3. First waterstop steel plate; 31~34 are four individual units of the first waterstop plate; 4. Second waterstop steel plate; 41. Connecting hole A; 5. Casting pipe; 6. Fastener; 611. Lower waterstop cap; 612. Upper waterstop cap; 621. Upper waterstop pad; 622. Lower waterstop pad; 63. Waterstop vertical rod; 7. First weld; 8. Third waterstop steel plate; 81~84 are four third waterstop steel plates set around the lattice column; 9. Waterproof membrane A; 10. Third weld; 11. Second weld; 12. Connecting corner piece; 121. Second groove; 122. Second groove; 123. First groove; 13. Fourth waterstop steel plate; 14. Foundation soil; 15. Connecting hole B; 16. Concrete cushion layer; 17. 18. Waterproof membrane; 19. Sealant; 20. Fine aggregate concrete protective layer; 21. Base slab; 22. Secondary pouring pier; 23. Embedded steel bars; 24. Cement-based penetrating crystalline waterproof coating layer. Detailed Implementation

[0027] To better understand this utility model, it will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1 The square lattice column shown includes gusset plates 2 and angle steel 1; there are four angle steel 1s, which are located at the four corners; the gusset plates 2 are arranged in layers, with four plates in each layer and arranged in pairs opposite each other; two adjacent gusset plates 2 in the same layer are connected by angle steel 1; the angle steel 1 and the gusset plates 2 are welded together.

[0029] like Figure 1 and Figure 2 The waterproof structure shown is specifically a waterproof structure for a lattice column used in a basement floor slab, which is installed at the top of the lattice column; specifically, the waterproof structure includes a first water-stop steel plate 3 and a second water-stop steel plate 4.

[0030] The first water-stop steel plate 3 is horizontally fixed inside the lattice column. The first water-stop steel plate 3 is connected to the inner wall of the angle steel 1 of the lattice column, serving as a support for the second water-stop steel plate 4. The first water-stop steel plate 3 has through holes that allow concrete to flow through.

[0031] A horizontal second water-stop steel plate 4 is provided above the first water-stop steel plate 3. The second water-stop steel plate 4 is connected to the first water-stop steel plate 3 by multiple fasteners 6. The second water-stop steel plate 4 is square.

[0032] The second water-stop steel plate 4 has a pouring and vibration hole, which is connected to the through hole on the first water-stop steel plate 3 below; the pouring and vibration hole is connected to a pouring pipe 5 for pouring concrete inside the lattice column.

[0033] In this utility model, the first water-stop steel plate 3 is welded to the angle steel 1 of the lattice column, and the lattice column is sealed tightly by the support and welding of the first water-stop steel plate 3 on its inner side. The edge of the second water-stop steel plate 4 covers the through hole on the first water-stop steel plate 3, and the lower part of the pouring and vibration hole opened on the second water-stop steel plate 4 communicates with the through hole, and the upper part is welded to the pouring pipe 5 to form the first weld 7, as shown. Figure 1 As shown.

[0034] In this utility model, the first water-stop steel plate 3 is formed by welding four individual units (as shown in the attached drawings 31-34) together (forming the second weld 11, as shown in the attached drawings 31-34). Figure 1 As shown), the center of each of the four individual units forms a through hole, through which concrete entering from the pouring pipe 5 can fall into the lower part of the lattice column. Each individual unit is an irregularly shaped L-shaped arc-cut waterstop steel plate, including two straight sections that fit against the inner wall of the angle steel 1, and an arc-shaped section connecting the ends of the two straight sections. The arc-shaped sections of the four individual units enclose a through hole through which concrete can flow. A connecting hole A41 is opened on the second waterstop steel plate 4, and a connecting hole B15 is opened on each individual unit. Both connecting holes are adapted to fasteners 6.

[0035] Preferably, such as Figure 3As shown, the fastener 6 is a waterproof fastener 6, including a water-stopping vertical rod 63, an upper water-stopping cap 612 located at the upper end of the water-stopping vertical rod 63, a lower water-stopping cap 611 located at the lower end of the water-stopping vertical rod 63, and an upper water-stopping pad 621 and a lower water-stopping pad 622 located between the upper water-stopping cap 612 and the lower water-stopping cap 611; the water-stopping vertical rod 63 passes through the connecting hole B15 on the first water-stopping steel plate 3 and the connecting hole A41 on the second water-stopping steel plate 4; wherein the first water-stopping steel plate 3 is engaged between the lower water-stopping cap 611 and the lower water-stopping pad 622, and the second water-stopping steel plate 4 is engaged between the upper water-stopping cap 612 and the upper water-stopping pad 621. The upper water-stopping cap 612 and the lower water-stopping cap 611 are respectively threaded to the water-stopping vertical rod 63.

[0036] Preferably, the waterproof structure further includes a third water-stop steel plate 8, the height of which is the same as that of the first water-stop steel plate 3; the third water-stop steel plate 8 is horizontally fixed around the lattice column, and the inner side of the third water-stop steel plate 8 is sealed to the outer wall of the four angle steels 1 of the lattice column and the outer edge of the first water-stop steel plate 3.

[0037] In this utility model, there are four third water-stop steel plates 8 (as shown in reference numerals 81-84 in the attached drawings), which are respectively arranged around the lattice column; the first water-stop steel plate 3 is arranged inside the lattice column, and the outer edge of the first water-stop steel plate 3 is connected to the four angle steels 1 of the lattice column; there is a gap between two adjacent angle steels 1, and within this gap, the outer edge of the first water-stop steel plate 3 is welded to the inner edge of the third water-stop steel plate 8 to form the third weld 10.

[0038] Preferably, the outer side of the third water-stop steel plate 8 is connected to the vertical fourth water-stop steel plate 13 via a connecting corner piece 12.

[0039] In this utility model, there are four third water-stop steel plates 8. The inner side of each third water-stop steel plate 8 is welded to the outer wall of the angle steel 1 of the lattice column. The edges of two adjacent third water-stop steel plates 8 are welded together. The outer side of each third water-stop steel plate 8 is connected to the vertical fourth water-stop steel plate 13 through the connecting corner piece 12 (the third water-stop steel plate 8, the fourth water-stop steel plate 13 and the connecting corner piece 12 are welded together). The four fourth water-stop steel plates 13 prevent water under the basement floor slab 20 from continuing to spread to the surroundings along the lattice column and the third water-stop steel plates 8.

[0040] Preferably, such as Figure 4 As shown, the connecting corner piece 12 is provided with a vertical first groove 123, a horizontal second groove 121, and a longitudinal third groove 122; the first groove 123 is adapted to the vertical side of the fourth water-stop steel plate 13; the second groove 121 is adapted to the horizontal side of the fourth water-stop steel plate 13 and the horizontal side of the third water-stop steel plate 8; the third groove 122 is adapted to the longitudinal side of the fourth water-stop steel plate 13 and the longitudinal side of the third water-stop steel plate 8. The third water-stop steel plate 8 and the fourth water-stop steel plate 13 are respectively welded to the connecting corner piece 12.

[0041] In this utility model, the first water-stop steel plate 3 and the second water-stop steel plate 4 are used for waterproofing the inside of the lattice column; the third water-stop steel plate 8 and the fourth water-stop steel plate 13 are used for waterproofing the outside of the lattice column.

[0042] Example

[0043] like Figure 1 and Figure 2 The diagram illustrates a waterproof structure used for waterproofing basement floor slabs and lattice columns. The waterproof structure includes a first water-stop steel plate 3, a second water-stop steel plate 4, a third water-stop steel plate 8, and a fourth water-stop steel plate 13. The first water-stop steel plate 3 is horizontally fixed inside the lattice column and connected to the inner wall of the angle steel 1 of the lattice column, serving as support for the second water-stop steel plate 4. The first water-stop steel plate 3 has through holes allowing concrete to flow through. A horizontal second water-stop steel plate 4 is installed above the first water-stop steel plate 3, and the second water-stop steel plate 4... Multiple fasteners 6 are connected to the first water-stop steel plate 3; the second water-stop steel plate 4 is square, and the four sides of the second water-stop steel plate 4 are sealed to the inner walls of the four angle steels 1; the second water-stop steel plate 4 is provided with a pouring and vibration hole (diameter of 150mm), and the pouring and vibration hole is connected to a pouring pipe 5; the third water-stop steel plate 8 is horizontally fixed around the lattice column, and the inner side of the third water-stop steel plate 8 is connected to the outer walls of the four angle steels 1 of the lattice column; the outer side of the third water-stop steel plate 8 is connected to a vertical fourth water-stop steel plate 13 through a connecting corner piece 12.

[0044] like Figure 5 As shown in this embodiment, the specific method for waterproofing the basement floor slab 20 and the lattice column is as follows:

[0045] 1. After the foundation pit dewatering, support, and earthwork excavation are completed, retain 200-300mm of original soil above the foundation (i.e., foundation soil 14), and excavate manually to the designed bottom surface of the foundation pit; remove the ends of the drilled pile reinforcement bars, grind the removed reinforcement bars smooth, and install a 150mm thick C20 concrete cushion layer 16; remove impurities and sharp objects from the base surface of the concrete cushion layer 16, and pre-lay waterproof membrane B17 within 500mm around the lattice columns below the waterstop steel plate and around the concrete cushion layer 16, with an overlap length greater than 80mm between waterproof membrane B17 sections; apply sealant 18 to the ends of the waterproof membrane B17 on the concrete cushion layer 16, and attach water-swellable sealing strips at the overlap positions of the ends of the waterproof membrane B17 at the lattice columns and the third waterstop steel plate 8. To ensure the waterproof membrane B17 achieves a sealed state, waterproof membrane A9 is laid on the basement floor slab 20, with the waterproof membrane A9 laid in stubs 30mm above the lattice columns (see details). Figure 1Waterproof membrane A9 overlaps the upper part of the square second waterstop steel plate 4), and sealant is applied to the stubble end; then fine stone concrete protective layer 19 is poured. Both waterproof membrane B17 and waterproof membrane A9 are SBS modified bitumen waterproof membranes.

[0046] 2. Waterproofing construction on the inside of the lattice column. Before the reinforcement of the basement floor slab 1 is tied, the water-stop steel plates of the lattice column are welded: four L-shaped arc-cut water-stop steel plates are welded at the four internal corners of the lattice column to form the first water-stop steel plate 3 as the lower support. A through hole is formed in the center of the first water-stop steel plate 3, and two connection holes 41 are reserved in each L-shaped arc-cut water-stop steel plate; a square second water-stop steel plate 4 is placed on the upper side of the first water-stop steel plate 3, which just blocks the through hole of the first water-stop steel plate 3. A circular pouring vibration hole with a diameter of 150mm is left on the second water-stop steel plate 4 to prepare for the later pouring inside the lattice column; the distance between the first water-stop steel plate 3 and the second water-stop steel plate 4 is adjusted by fasteners 6 to seal the inside of the lattice column. The joint is repaired by welding, which can effectively block the water in the intersection of the structural slab inside the lattice column and complete the waterproofing measures inside the lattice column.

[0047] 3. Construction of the outer waterstop steel plate of the lattice column. The horizontal third waterstop steel plate 8 is welded around the outer perimeter of the lattice column according to conventional practices. Then, the vertical fourth waterstop steel plate 13 is welded to the outer edge of the third waterstop steel plate 8 through the connecting corner pieces 24 at the four external corners. The horizontal third waterstop steel plate 8 and the vertical fourth waterstop steel plate 13 are fixed by full welding of the connecting seam and connecting corner pieces 24. The four vertical fourth waterstop steel plates 13 are exposed in the pouring groove of the secondary pouring later.

[0048] 4. Pouring of the base slab 20 and reserving a secondary pouring groove. When pouring the basement base slab 20, a square pouring groove is reserved at the lattice column location for formwork support, to allow for a second layer of waterproofing before further pouring (a horizontal waterproofing layer is added within the pouring groove using the vertical fourth water-stop steel plate 13, making the waterproofing more robust). Concrete is poured below the third water-stop steel plate 8, either through the gap between the lattice column and the basement base slab 2 (using the connecting plate 2) or through a 150mm reserved pouring vibration hole on the inner side of the lattice column.

[0049] 5. Pouring concrete in the pouring groove: After the first pouring of the basement floor slab 20 and the lattice column, a pouring groove is reserved. The fourth vertical water-stop steel plate 13 around the lattice column is exposed in the pouring groove. A horizontal waterproof layer is applied to the bottom of the pouring groove, and a cement-based penetrating crystalline waterproof coating layer 23 is applied. At the same time, the groove wall of the pouring groove is roughened. Reinforcing bars 22 are embedded around the groove. The lower part of the reinforcing bars 22 is embedded in the floor slab 20. The diameter of the reinforcing bars 22 is 12mm and the length is 300mm. Then, concrete is poured in the pouring groove, and the resulting secondary pouring pier 21 is tightly connected to the basement floor slab 20.

[0050] This utility model forms a closed water-stop structure from the water-stop steel plate to the upper basement floor slab 20, which can block the risk of water seepage and leakage in multiple layers, and leaves a groove for secondary pouring to reduce leakage at this node, ensuring the waterproof performance of this part after the basement lattice column is removed. It formulates detailed waterproof design and construction arrangements for important nodes of the basement lattice column, ensuring the waterproof sealing of the lattice column under the support structure of each internal and external corner of the basement, ensuring smooth construction and reducing repairs.

[0051] This utility model features a groove for exposing vertical water-stop steel plates during the initial pouring, with anchoring steel bars (i.e., pre-embedded steel bars 22) installed around the lattice column. The side walls are chiseled to facilitate the complete integration of the subsequent secondary pouring and the initial pouring. Simultaneously, a waterproof layer is arranged at the U-shaped opening, and a cement-based penetrating crystalline waterproof coating layer 23 is applied. The final pouring is completed through secondary pouring, reducing leakage at the U-shaped opening and creating a completely sealed lattice column, thus improving the waterproofing effect.

[0052] This utility model forms a complete waterproof system by using a vertical fourth water-stop steel plate 13, a horizontally sealed first water-stop steel plate 3 and a second water-stop steel plate 4 inside the lattice column, and a horizontal waterproof layer with a reserved groove in the final secondary pouring. This reduces the problem of waterproof leakage at the node after the lattice column is removed. The construction is simple and convenient, and it ensures the waterproof sealing performance at the location. It is feasible and scalable.

[0053] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0054] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waterproof structure, characterized in that, Including the first water-stop steel plate and the second water-stop steel plate; The first water-stop steel plate is horizontally fixed inside the lattice column and is connected to the inner wall of the angle steel of the lattice column, serving as a support for the second water-stop steel plate; the first water-stop steel plate has through holes that allow concrete to flow through. A horizontal second waterstop steel plate is installed above the first waterstop steel plate; The second water-stop steel plate has a pouring and vibration hole that communicates with the through hole; The waterproof structure also includes a third water-stop steel plate, the height of which is the same as that of the first water-stop steel plate; the third water-stop steel plate is horizontally fixed around the lattice column, and the inner side of the third water-stop steel plate is connected to the outer walls of the four angle steels of the lattice column and the outer edge of the first water-stop steel plate. A vertical fourth water-stop steel plate is connected to the outer side of the third water-stop steel plate via connecting corner pieces.

2. The waterproof structure as described in claim 1, characterized in that, The second water-stop steel plate is connected to the first water-stop steel plate by a plurality of fasteners; the fasteners include a water-stop vertical rod, an upper water-stop cap located at the upper end of the water-stop vertical rod, a lower water-stop cap located at the lower end of the water-stop vertical rod, and an upper water-stop pad and a lower water-stop pad located between the upper water-stop cap and the lower water-stop cap; the water-stop vertical rod passes through the first water-stop steel plate and the second water-stop steel plate; wherein the first water-stop steel plate is clamped between the lower water-stop cap and the lower water-stop pad, and the second water-stop steel plate is clamped between the upper water-stop cap and the upper water-stop pad.

3. The waterproof structure as described in claim 2, characterized in that, The connecting corner piece is provided with a vertical first groove, a horizontal second groove, and a longitudinal third groove; the first groove is adapted to the vertical side of the fourth water-stop steel plate; the second groove is adapted to the horizontal side of the fourth water-stop steel plate and the horizontal side of the third water-stop steel plate; the third groove is adapted to the longitudinal side of the fourth water-stop steel plate and the longitudinal side of the third water-stop steel plate.

4. The waterproof structure as described in claim 3, characterized in that, The first water-stop steel plate is formed by welding four individual units together, with a through hole formed in the center of the four units.

5. The waterproof structure as described in claim 4, characterized in that, The unit is an L-shaped arc-cut waterstop steel plate, including two straight sections that fit against the inner wall of the angle steel, and an arc-shaped section connecting the ends of the two straight sections; the arc-shaped sections of the four units enclose each other to form a through hole.

6. The waterproof structure as described in claim 2, characterized in that, The first and second water-stop steel plates are both welded to the angle steel of the lattice column.

7. The waterproof structure as described in claim 2, characterized in that, The upper and lower water-stop caps are threadedly connected to the water-stop vertical rods, respectively.

8. The waterproof structure as described in claim 1, characterized in that, There are four third water-stop steel plates. The inner side of each third water-stop steel plate is welded to the outer wall of the angle steel of the lattice column, and the edges of two adjacent third water-stop steel plates are welded together.

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