Waterproof construction structure at joint of new concrete and old concrete

Abstract

The utility model provides a waterproof construction structure at a new and old concrete joint, which relates to the technical field of building construction and comprises a special-shaped steel edge rubber waterstop, a grouting pipe, a first waterproof layer, a crack-resistant waterproof patch and a second waterproof layer. An excellent waterproof effect is achieved by installing a special-shaped steel edge rubber waterstop, pre-burying a grouting pipe and filling a first waterproof layer, a crack-resistant waterproof paste and a second waterproof layer, and the waterproof performance of the joint of an old concrete structure and a new concrete structure can still be effectively guaranteed even under the conditions that concrete creep, shear deformation and the like occur; waterproof construction of weak parts of an old concrete structure and a new concrete structure is guaranteed, and the problems that through seams exist in the seam positions in an existing waterproof construction method, water leakage is generated, and gaps are generated due to shearing damage when stress is large are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a waterproof construction structure for a joint between new and old concrete. Background Art

[0002] There are two main traditional methods for waterproofing joints between new and old concrete. The first involves roughening the joint and then embedding grouting pipes or waterstop adhesive. After the concrete is poured, the joint is filled with grouting. However, over time, concrete expands and contracts due to temperature fluctuations and creep, which can cause through-holes to form at the joint, leading to leakage. The second method involves using waterstop steel plates at the joint. This involves pre-embedding vertical steel plates in the old concrete and welding transverse steel plates before pouring the new concrete to create a waterstop. While this method is effective in the short term, due to the smooth surface of the steel plates and insufficient bond strength with the concrete, long-term use can also lead to through-holes due to concrete expansion and creep. Furthermore, when there is uneven settlement between the new and old concrete, the rigid steel plates can easily fail at the connection when subjected to high stress, resulting in shear failure and cracks. Therefore, there is an urgent need to explore more effective solutions for waterproofing joints between new and old concrete. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art, thereby providing a waterproof construction structure for the joints between new and old concrete.

[0004] A waterproof construction structure for the joint of new and old concrete, the waterproof construction structure includes a special-shaped steel-edged rubber waterstop and a grouting pipe, the grouting pipes are arranged in pairs, the special-shaped steel-edged rubber waterstop and the grouting pipe are both fixedly arranged on the joint surface of the old concrete structure, the joint of the old concrete structure and the new concrete structure are filled with a first waterproof layer, a crack-resistant waterproof tape and a second waterproof layer in sequence, the special-shaped steel-edged rubber waterstop includes a waterstop body, a rigid part, a U-shaped groove and a fixing plate, the rigid part is arranged at one end of the waterstop body, the U-shaped groove is arranged at the other end of the waterstop body, and the fixing plate is connected to the U-shaped groove and the joint surface of the old concrete structure at the same time.

[0005] Furthermore, the waterproof construction structure also includes bolts, which are connected to the joint surface of the fixing plate and the old concrete structure at the same time.

[0006] Furthermore, the waterproof construction structure also includes a steel plate strip, which is arranged at the connection between the bolt and the fixing plate.

[0007] Furthermore, the waterproof construction structure also includes an adhesive tape, which is arranged at the connection between the fixing plate and the joint surface of the old concrete structure.

[0008] Furthermore, the nominal diameter of the bolt is 8 mm.

[0009] Furthermore, the length of the bolt is 200 mm.

[0010] Furthermore, the length of the steel plate strip is 30 mm.

[0011] Furthermore, the width of the steel plate strip is 30 mm.

[0012] Furthermore, the thickness of the steel plate layer is 5 mm.

[0013] Furthermore, the thickness of the adhesive tape is 1.5 mm.

[0014] The technical solution of this utility model has the following advantages:

[0015] The utility model provides a waterproof construction structure for the joints of old and new concrete, which achieves excellent waterproof effect by installing an effective combination of special-shaped steel-edge rubber waterstop, embedded grouting pipes, filling a first waterproof layer, crack-resistant waterproof stickers and a second waterproof layer. The setting of the U-shaped groove in the special-shaped steel-edge rubber waterstop relieves stress concentration and enhances the water-stopping and waterproofing effect. The setting of the rigid parts realizes the connection between the old concrete structure and the new concrete structure, thereby ensuring the rigidity and strength of the connection. Even in the case of creep, shear deformation, etc. of the concrete, the waterproof construction structure can still effectively ensure the waterproof performance of the joints between the old concrete structure and the new concrete structure; this structure has the advantages of fast and convenient construction, low cost investment and significant effect, can effectively prevent the occurrence of leakage, and ensure the waterproof construction of weak parts of the old concrete structure and the new concrete structure. At the same time, the method simplifies the construction process, reduces construction time, improves construction efficiency, effectively reduces project costs, speeds up project progress, and saves later maintenance costs by avoiding subsequent manual plugging treatments caused by water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the utility model after installing the special-shaped steel edge rubber water stop and the grouting pipe;

[0018] Figure 2This is a schematic diagram of the structure of the utility model after pouring a new concrete structure;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model after laying the first layer of waterproof coating and crack-resistant waterproof tape;

[0020] Figure 4 This is a schematic diagram of the overall structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the special-shaped steel-edged rubber waterstop of the utility model.

[0022] Description of reference numerals:

[0023] 1-Old concrete structure; 2-New concrete structure; 3-Special-shaped steel-edged rubber waterstop; 3-1-Waterstop body; 3-2-Rigid part; 3-3-U-shaped groove; 3-4-Fixed plate; 4-Grouting pipe; 5-First layer of waterproof coating; 6-Crack-resistant waterproof sticker; 7-Second layer of waterproof coating. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] As Figures 1 to 5 The utility model relates to a kind of waterproof construction structure at new and old concrete joint, a kind of waterproof construction structure at new and old concrete joint, the waterproof construction structure includes special-shaped steel side rubber waterstop 3 and grouting pipe 4, grouting pipe 4 is set up in pair, special-shaped steel side rubber waterstop 3 and grouting pipe 4 are fixedly set on the joint surface of old concrete structure 1, the joint of old concrete structure 1 and new concrete structure 2 is filled with first waterproof layer, crack-resistant waterproof paste 6 and second waterproof layer in sequence, special-shaped steel side rubber waterstop 3 includes waterstop body 3-1, rigid piece 3-2, U-shaped groove 3-3 and fixed plate 3-4, rigid piece 3-2 is set in one end of waterstop body 3-1, U-shaped groove 3-3 is set in the other end of waterstop body 3-1, fixed plate 3-4 is connected with U-shaped groove 3-3 and the joint surface of old concrete structure 1 simultaneously, first waterproof layer is first layer waterproof paint 5, and second waterproof layer is second layer waterproof paint 7.

[0029] The above-mentioned waterproof construction structure at new and old concrete joint, by installing special-shaped steel side rubber waterstop 3, pre-burying grouting pipe 4, filling first layer waterproof paint 5, crack-resistant waterproof paste 6 and second layer waterproof paint 7 etc. Effective combination, reach excellent waterproof effect, the setting of U-shaped groove 3-3 in special-shaped steel side rubber waterstop 3 relieves stress concentration, enhances the effect of waterstop waterproof, the setting of rigid piece 3-2 realizes the connection of old concrete structure 1 and new concrete structure 2, to ensure the rigidity and strength of connection, even in the case of concrete creep, shear deformation etc., the waterproof construction structure can still effectively guarantee the waterproof performance of the joint of old concrete structure 1 and new concrete structure 2;This structure has the advantages of rapid, convenient construction, lower cost and remarkable effect, can effectively prevent the occurrence of leakage phenomenon, guarantee the waterproof construction of weak part of old concrete structure 1 and new concrete structure 2, simultaneously, the method simplifies construction process, reduces construction time, improves construction efficiency, effectively reduces engineering cost, speeds up engineering progress, by avoiding subsequent manual leak stoppage treatment caused by leakage, saves later maintenance cost.

[0030] As Figures 1 to 5As shown, in the embodiment, the waterproof construction structure further comprises a bolt, the bolt is connected with the joint surface of the fixed plate 3-4 and the old concrete structure 1; the bolt connection can provide higher bearing capacity, ensure the stability and safety of the fixed installation of the special-shaped steel edge rubber waterstop 3, improve the waterproof capacity, at the same time, the cost of the bolt connection is lower, which helps to reduce the cost of construction, in addition, the bolt connection is suitable for a variety of materials, such as steel, aluminum and concrete materials, which can be widely used in different engineering fields, so the bolt connection is suitable for the connection between the special-shaped steel edge rubber waterstop 3 and the joint surface of the old concrete structure 1, in the embodiment, the nominal diameter of the bolt is 8mm, and the length of the bolt is 200mm, in addition, the nominal diameter and length of the bolt can be adjusted according to the actual construction requirements.

[0031] As shown in the figure, Figures 1 to 5 In the embodiment, the waterproof construction structure further comprises a steel plate pressing strip, which is arranged at the connection between the bolt and the fixed plate 3-4; the steel plate pressing strip is arranged at the connection between the bolt and the fixed plate 3-4, which helps to enhance the reliability and stability of the connection between the bolt and the special-shaped steel edge rubber waterstop 3, and thus increase the waterproof performance of the structure, in the embodiment, the length of the steel plate pressing strip is 30mm, the width of the steel plate pressing strip is 30mm, and the thickness of the steel plate pressing strip is 5mm, in addition, the length, width and thickness of the steel plate pressing strip can be adjusted accordingly according to the actual construction requirements.

[0032] As shown in the figure, Figures 1 to 5 In the embodiment, the waterproof construction structure further comprises an adhesive tape, which is arranged at the connection between the fixed plate 3-4 and the joint surface of the old concrete structure 1; the adhesive tape is arranged at the connection between the fixed plate 3-4 and the joint surface of the old concrete structure 1, which helps to increase the reliability and stability of the connection between the special-shaped steel edge rubber waterstop 3 and the joint surface of the old concrete structure 1, and thus help to improve the waterproof performance of the structure, in the embodiment, the thickness of the adhesive tape is 1.5mm, in addition, the thickness of the adhesive tape can be adjusted accordingly according to the actual construction requirements.

[0033] As shown in the figure, Figures 1 to 5 In the embodiment, the waterproof construction steps at the new and old concrete joint are as follows:

[0034] Step one, the surface of the old concrete structure 1 is treated, the special-shaped steel edge rubber waterstop 3 and the grouting pipe 4 are installed; before the construction of the new concrete structure 2, the joint surface of the old concrete structure 1 at the joint position is cleaned, then the special-shaped steel edge rubber waterstop 3 is installed, the remaining part of the joint position is chiseled, and two grouting pipes 4 are installed;

[0035] Step 2: pouring and curing of the new concrete structure 2; before pouring the new concrete structure 2, fully moisten the joint surface of the old concrete structure 1, and check the fixation of the special-shaped steel edge rubber waterstop 3 and the grouting pipe 4. After confirming that they are fixed correctly, pour the new concrete structure 2. During the pouring process, the concrete needs to be fully vibrated and watered and covered for curing in accordance with the specifications and design requirements;

[0036] Step three, grouting of the pre-buried grouting pipe 4 is performed; after the curing time of the new concrete structure 2 meets the requirements, grouting is performed through the pre-buried grouting pipe 4 to fill the cracks at the joints of the old concrete structure 1 and the new concrete structure 2 caused by the shrinkage of the new concrete structure 2. Grouting should be performed at least twice and fully filled. After the grouting is completed, the exposed part of the grouting pipe 4 is cut off to avoid water leakage in the later stage;

[0037] Step 4: Apply waterproof coating to the joint of the old concrete structure 1 and the new concrete structure 2; after the grouting process of step 3 is completed, apply the first layer of waterproof coating 5 to the top plate of the joint of the old concrete structure 1 and the new concrete structure 2. The first layer of waterproof coating 5 should be applied in layers in a cross direction and applied at least twice until the first layer of waterproof coating 5 no longer leaks into the joint of the old concrete structure 1 and the new concrete structure 2. The application process is terminated;

[0038] Step five, pre-laying crack-resistant waterproof stickers 6 at the joints of the old concrete structure 1 and the new concrete structure 2; in order to prevent uneven settlement between the old concrete structure 1 and the new concrete structure 2, which may cause the waterproof measures to break and fail, artificially pre-laying crack-resistant waterproof stickers 6 before the first layer of waterproof coating 5 applied for the last time is temporarily air-dried, the crack-resistant waterproof stickers 6 have a certain tensile tear strength, good waterproof and wear resistance, high and low temperature resistance, and exposure resistance, and have strong adhesion. The crack-resistant waterproof stickers 6 are laid along the direction of the joints of the old concrete structure 1 and the new concrete structure 2, and the width of the single side from the joint gap is not less than 200mm. The crack-resistant waterproof stickers 6 should be tightly combined with the first layer of waterproof coating 5. When laying the crack-resistant waterproof stickers 6, the gap between the crack-resistant waterproof stickers 6 and the first layer of waterproof coating 5 should be emptied to avoid subsequent water leakage.

[0039] Step six, after the crack-resistant waterproof sticker 6 is laid in step five, the second layer of waterproof coating 7 is finally filled and applied, and the second layer of waterproof coating 7 completely covers the crack-resistant waterproof sticker 6.

[0040] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A waterproof construction structure for the joints between new and old concrete, characterized in that: The waterproof construction structure comprises a special-shaped steel-edge rubber waterstop (3) and a grouting pipe (4), wherein the grouting pipe (4) is arranged in pairs, and the special-shaped steel-edge rubber waterstop (3) and the grouting pipe (4) are both fixedly arranged on the joint surface of the old concrete structure (1), and the joint between the old concrete structure (1) and the new concrete structure (2) is filled with a first waterproof layer, a crack-resistant waterproof tape (6) and a second waterproof layer in sequence, and the special-shaped steel-edge rubber waterstop (3) comprises a waterstop body (3-1), a rigid part (3-2), a U-shaped groove (3-3) and a fixing plate (3-4), wherein the rigid part (3-2) is arranged at one end of the waterstop body (3-1), the U-shaped groove (3-3) is arranged at the other end of the waterstop body (3-1), and the fixing plate (3-4) is simultaneously connected to the U-shaped groove (3-3) and the joint surface of the old concrete structure (1).

2. A waterproof construction structure for the joint between new and old concrete according to claim 1, characterized in that: The waterproof construction structure also includes bolts, which are connected to the joint surface of the fixing plate (3-4) and the old concrete structure (1) at the same time.

3. A waterproof construction structure for the joint between new and old concrete according to claim 2, characterized in that: The waterproof construction structure further comprises a steel plate pressure strip, which is arranged at the connection between the bolt and the fixing plate (3-4).

4. The waterproof construction structure for the joint between new and old concrete according to claim 1, characterized in that: The waterproof construction structure also includes an adhesive tape, which is arranged at the connection between the fixing plate (3-4) and the joint surface of the old concrete structure (1).

5. The waterproof construction structure for the joint between new and old concrete according to claim 2, characterized in that: The nominal diameter of the bolt is 8 mm.

6. The waterproof construction structure for the joint between new and old concrete according to claim 2, characterized in that: The length of the bolt is 200 mm.

7. The waterproof construction structure for the joint between new and old concrete according to claim 3, characterized in that: The length of the steel plate layer is 30 mm.

8. The waterproof construction structure for the joint between new and old concrete according to claim 3, characterized in that: The width of the steel plate layer is 30 mm.

9. The waterproof construction structure for the joint between new and old concrete according to claim 3, characterized in that: The thickness of the steel plate layer is 5 mm.

10. The waterproof construction structure for the joint between new and old concrete according to claim 4, characterized in that: The thickness of the adhesive tape is 1.5 mm.

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