CN218970730U

CN218970730U - Strong pressure plugging structure for construction joint

Info

Publication number: CN218970730U
Application number: CN202223278620.0U
Authority: CN
Inventors: 蔺进财
Original assignee: Dalian Xintian Housing Repair Engineering Co ltd
Current assignee: Dalian Xintian Housing Repair Engineering Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-05-05
Anticipated expiration: 2032-12-07

Abstract

The utility model provides a construction joint strong-pressure plugging structure, which belongs to the technical field of constructional engineering, wherein a groove-shaped opening is formed in the indoor side of a wall body at a position corresponding to the construction joint, a V-shaped notch is formed in the bottom of the opening, and the V-shaped notch is communicated with the construction joint; the middle position of the construction joint is provided with a pre-buried water stop, and one side of the construction joint, facing the indoor, of the pre-buried water stop is provided with a grouting part; a mortar blocking part is arranged in the V-shaped notch; a grouting nozzle is arranged in the wall body, one end of the grouting nozzle is positioned at the grouting part, and the other end of the grouting nozzle is positioned at the bottom of the break; and a plugging plate, a waterproof layer and a mortar leveling layer are sequentially arranged in the crack in the direction from the bottom of the groove to the indoor side. According to the scheme, the two sides of the construction joint are chiseled with the break and the V-shaped notch, and the laminated structure formed by the mortar plugging part, the plugging plate, the waterproof layer and the mortar leveling layer is arranged in the break and the V-shaped notch, so that the strong pressure plugging is realized, the plugging construction effect is ensured, and the secondary leakage is avoided.

Description

Strong pressure plugging structure for construction joint

Technical Field

The utility model belongs to the technical field of constructional engineering, and particularly relates to a construction joint strong-pressure plugging structure.

Background

The construction joint refers to a joint formed between the concrete poured in advance and the concrete poured in the post because of design requirements or construction needs to be poured in sections in the concrete pouring process. The concrete aggregate at the construction joint is concentrated, the concrete is loose, the new and old concrete joints are obvious, and the water leakage condition is easy to occur along the joint. The existing plugging mode is, for example, that a construction joint leakage part is chiseled along a joint, cleaned up, grouting holes are drilled, chemical grouting is carried out, a basement plugging layer of 5mm-10mm is manufactured, basement plugging slurry of 2mm-3mm and basement plugging mortar of 10mm-15mm are smeared in layers for two times. The existing scheme only depends on slurry to perform plugging, certain risks exist in reliability, and particularly, the situation of secondary leakage in a short time is easy to occur under the condition of high outdoor underground water pressure.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the strong-pressure plugging structure for the construction joint is provided, a more effective plugging effect is achieved, and the situation that leakage occurs again after construction is avoided.

According to the technical scheme, the utility model provides a construction joint strong-pressure plugging structure, a groove-shaped opening is formed in the indoor side of a wall body at a position corresponding to the construction joint, a V-shaped notch is formed in the bottom of the opening, and the V-shaped notch is communicated with the construction joint; the middle position of the construction joint is provided with a pre-buried water stop, and one side of the construction joint, facing the indoor, of the pre-buried water stop is provided with a grouting part; a mortar blocking part is arranged in the V-shaped notch; a grouting nozzle is arranged in the wall body, one end of the grouting nozzle is positioned at the grouting part, and the other end of the grouting nozzle is positioned at the bottom of the break; and a plugging plate, a waterproof layer and a mortar leveling layer are sequentially arranged in the crack in the direction from the bottom of the groove to the indoor side.

Further, the construction joint is positioned at the center of the break.

Further, the indoor side of the wall body is provided with first positioning holes at two sides of the V-shaped notch, the plugging plate is provided with second positioning holes corresponding to the first positioning holes, and expansion bolts are inserted into the first positioning holes and the second positioning holes.

Further, one end of the grouting nozzle is close to the first positioning hole.

Further, a gap is formed between the plugging plate and two side walls of the break, and the waterproof layer covers the plugging plate and the gap.

Further, the indoor side of the mortar leveling layer is flush with the peripheral wall.

Further, a facing layer is arranged on the indoor side of the mortar leveling layer and the wall body.

Further, an original filling part is arranged on one side of the construction joint, facing the outside, of the embedded water stop belt.

Preferably, the width of the break is 200mm and the depth is 50mm; the width of the V-shaped notch is 30mm, and the depth is 20mm; the plugging plate is a stainless steel plate with the width of 150mm and the thickness of 3 mm.

Preferably, the distance between two adjacent first positioning holes on either side of the V-shaped notch is 200mm.

Compared with the prior art, the utility model has the following beneficial technical effects:

the scheme is characterized in that the construction joint is provided with a break and a V-shaped notch at two sides except for the existing grouting process, and a laminated structure consisting of a mortar plugging part, a plugging plate, a waterproof layer and a mortar leveling layer is arranged in the break and the V-shaped notch, so that strong pressure plugging is realized, a large enough connecting acting force is formed between the mortar plugging part and a wall body, and therefore, the underground water pressure on the outdoor side can be resisted, the plugging construction effect is ensured, and leakage is avoided.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model.

Fig. 2 is a partial enlarged view of fig. 1.

Reference numerals in the drawings illustrate:

1. a wall body;

2. a construction joint;

3. a break;

4. a V-shaped notch;

5. a pre-buried water stop;

6. a grouting part;

7. a mortar blocking part;

8. grouting nozzle;

9. a plugging plate;

10. a waterproof layer;

11. a mortar leveling layer;

12. an expansion bolt;

13. a facing layer;

14. and an original filling part.

Detailed Description

The utility model provides a construction joint strong-pressure plugging structure, which realizes more effective plugging effect to resist stronger underground water pressure and avoids the condition of leakage after construction.

Referring to fig. 1 and 2, the present utility model is applicable to an existing conventional construction joint structure, wherein a construction joint 2 is transverse and is located in a wall 1 of a building, a longitudinal embedded water stop 5 is disposed in the middle of the construction joint 2, and an original filling portion 14 is disposed on a side of the construction joint 2, facing outdoors, of the embedded water stop 5. After the building is used for a long time, cracks or holes may occur in the original filling part 14 and/or the embedded water stop 5 and the construction joint 2, so that leakage is generated under the action of external underground water pressure. According to the construction joint strong-pressure plugging structure, the groove-shaped break 3 is formed in the indoor side of the wall body 1 at the position corresponding to the construction joint 2. The construction joint 2 is preferably located in the center of the break 3, i.e. the break 3 is symmetrical on both sides of the construction joint 2. The width of the break 3 is, for example, 200mm and the depth is, for example, 50mm.

The V-shaped notch 4 is arranged at the middle position of the groove bottom of the break 3 (namely, the break 3 is recessed on one surface of the indoor side surface of the wall body 1), the width of the V-shaped notch 4 gradually decreases from the indoor side to the indoor side, for example, the depth is 20mm, and the width at the widest part is 30mm. One end of the V-shaped notch 4 close to the outside is communicated with the construction joint 2. The V-shaped notch 4 is filled with a mortar blocking portion 7, for example, high-strength quick-drying repair mortar. And a grouting part 6 is arranged between one side of the embedded water stop 5 facing the indoor space and the mortar plugging part 7 in the construction joint 2, and the grouting part 6 is preferably made of an acrylic acid salt waterproof liquid. A grouting nozzle 8 is arranged in the wall body 1, one end of the grouting nozzle 8 is positioned at the grouting part 6, and the other end of the grouting nozzle 8 is positioned at the bottom of the break 3.

A plugging plate 9 is arranged at the bottom of the groove close to the break 3. In a specific embodiment, the plugging plate 9 is a stainless steel plate with a width of 150mm and a thickness of 3mm, the indoor side surface of the wall body 1 is provided with a plurality of first positioning holes at two sides of the V-shaped notch 4, and the interval distance between two adjacent first positioning holes at any side of the V-shaped notch 4 is, for example, 200mm. The plugging plate 9 is provided with a second positioning hole corresponding to the first positioning hole, and expansion bolts 12 are inserted into the first positioning hole and the second positioning hole, so that the plugging plate 9 is firmly connected with the wall body 1 at the bottom of the break 3. Preferably, one end of the grouting nozzle 8 is close to or positioned in the first positioning hole, so that construction is facilitated, and compaction and plugging of the plugged plate 9 can be guaranteed.

A waterproof layer 10 and a mortar leveling layer 11 are arranged in a sequentially and closely adjacent manner in the direction from the blocking plate 9 to the indoor side. The waterproof layer 10 is preferably prepared by adopting the existing poly-nano film-cloth three-coating process, wherein the poly-nano film refers to a waterproof material formed by uniformly dispersing nano-scale superfine powder in polymer liquid, such as nano-scale acrylic acid polymer cement anti-corrosion waterproof paint; "one cloth three coating" refers to a waterproof process of a layer of non-woven fabric or alkali-resistant grid cloth with three additional waterproof material layers. The mortar leveling layer 11 is preferably made of high-strength quick-drying repair mortar. The mortar leveling layer 11 fills the rest space of the break 3, the indoor side surface of the mortar leveling layer 11 is flush with the wall body 1 around the mortar leveling layer 11, the indoor sides of the mortar leveling layer 11 and the wall body 1 are provided with the facing layers 13, and the facing of the indoor side of the wall body 1 is restored.

More specifically, in the above embodiment, the width of the plugging plate 9 is smaller than the width of the break 3 ("width" is represented by the vertical distance in fig. 1 and 2), and a gap is formed between the plugging plate 9 and the two side walls of the break 3, and the waterproof layer 10 covers the plugging plate 9 and the gap, and further the mortar leveling layer 11 covers the waterproof layer 10 (and the gap remaining at the groove bottom, if any) to form a tightly laminated waterproof plugging structure.

The construction mode of the preferred plugging structure is as follows:

1. chiseling: chiseling out a break 3 with the width of about 200mm and the depth of 50mm on two sides of a construction joint 2, and chiseling out a V-shaped notch 4 with the width of about 30mm and the depth of 20mm at the position of the construction joint 2 in the break 3;

2. plugging: filling Gao Jiangsu dry repair mortar into the V-shaped notch 4, and sealing and compacting to form a mortar sealing part 7;

3. and (3) water stopping: positioning and drilling holes at 200mm intervals on two sides of the construction joint 2 to form a first positioning hole, embedding a grouting nozzle 8 close to the first positioning hole, penetrating the grouting nozzle 8 into the construction joint 2, and injecting acrylic acid salt grouting liquid by a high-pressure pump for multiple times to form a grouting part 6, wherein the gap in the construction joint 2 is filled, and the construction joint is suitable for being saturated without clear water overflow;

4. and (3) pressing: positioning and drilling holes on two sides of the V-shaped notch 4 to form a second positioning hole, embedding an expansion bolt 12, fixing the expansion bolt by adopting a stainless steel plate with the width of 150mm and the thickness of 3mm as a plugging plate 9, screwing the expansion bolt 12 to enable the plugging plate 9 to be pressed, and plugging and compacting mortar of a mortar plugging part 7 higher than the bottom of the break 3 and a grouting nozzle 8;

5. and (3) waterproof construction: the waterproof layer 10 with the thickness of 3mm is coated in the break 3, and the coating is uniformly covered;

6. leveling: filling 50mm thick high-strength quick-drying repair mortar into the break 3, sealing, compacting and leveling to form a mortar leveling layer 11, and maintaining for 3-5 days;

7. and (3) facing: the finishing layer 13 is restored on the indoor side according to the original finishing material.

To sum up, in addition to the existing grouting process, the two sides of the construction joint 2 are chiseled with the break 3 and the V-shaped notch 4, and the laminated structure formed by the mortar blocking part 7, the blocking plate 9, the waterproof layer 10 and the mortar leveling layer 11 is arranged in the construction joint, so that strong pressure leakage blocking is realized, a large enough connecting acting force is formed between the reinforced pressure leakage blocking and the wall 1, thereby being capable of resisting the underground water pressure on the outer side, ensuring the leakage blocking construction effect and avoiding leakage.

Claims

1. The construction joint strong-pressure leakage blocking structure is characterized in that a groove-shaped break (3) is formed in the indoor side of a wall body (1) corresponding to a construction joint (2), a V-shaped notch (4) is formed in the groove bottom of the break (3), and the V-shaped notch (4) is communicated with the construction joint (2); a pre-buried water stop (5) is arranged in the middle of the construction joint (2), and a grouting part (6) is arranged on one side, facing the indoor, of the pre-buried water stop (5) in the construction joint (2); a mortar blocking part (7) is arranged in the V-shaped notch (4); a grouting nozzle (8) is arranged in the wall body (1), one end of the grouting nozzle (8) is positioned at the grouting part (6), and the other end of the grouting nozzle (8) is positioned at the bottom of the break (3); a plugging plate (9), a waterproof layer (10) and a mortar leveling layer (11) are sequentially arranged in the crack (3) from the bottom of the tank to the indoor side.

2. The construction joint strong-pressure plugging structure according to claim 1, wherein the construction joint (2) is located at the central position of the break (3).

3. The construction joint strong-pressure plugging structure according to claim 1, wherein the indoor side surface of the wall body (1) is provided with first positioning holes at two sides of the V-shaped notch (4), the plugging plate (9) is provided with second positioning holes corresponding to the first positioning holes, and expansion bolts (12) are penetrated into the first positioning holes and the second positioning holes.

4. A construction joint strong pressure plugging structure according to claim 3, wherein one end of the grouting nozzle (8) is close to the first positioning hole.

5. The construction joint strong-pressure plugging structure according to claim 1, wherein a gap is formed between the plugging plate (9) and two side walls of the break (3), and the waterproof layer (10) covers the plugging plate (9) and the gap.

6. Construction joint strong pressure plugging structure according to claim 1, characterized in that the indoor side of the mortar leveling layer (11) is flush with the surrounding wall (1).

7. The construction joint strong-pressure plugging structure according to claim 6, wherein a facing layer (13) is arranged on the mortar leveling layer (11) and the indoor side of the wall body (1).

8. The construction joint strong-pressure plugging structure according to any one of claims 1 to 7, wherein an original filling portion (14) is provided in the construction joint (2) at a side of the pre-buried water stop (5) facing outdoors.

9. Construction joint strong pressure plugging structure according to any of claims 1-7, wherein the width of the break (3) is 200mm and the depth is 50mm; the width of the V-shaped notch (4) is 30mm, and the depth is 20mm; the plugging plate (9) is a stainless steel plate with the width of 150mm and the thickness of 3 mm.

10. The construction joint strong-pressure plugging structure according to claim 3 or 4, wherein the distance between two adjacent first positioning holes on either side of the V-shaped notch (4) is 200mm.