CN210562702U

CN210562702U - Waterproof structure of precast concrete outer wall bottom seam

Info

Publication number: CN210562702U
Application number: CN201920861409.0U
Authority: CN
Inventors: 吴煜江
Original assignee: Jiangsu Zhusen Architectural Design Co Ltd
Current assignee: Jiangsu Zhusen Architectural Design Co Ltd
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-05-19
Anticipated expiration: 2029-06-10

Abstract

The utility model discloses a waterproof structure of precast concrete outer wall bottom seam belongs to the assembly type structure field. The utility model discloses a joint department of concrete beam and prefabricated wall body is located to waterproof structure, and the upper portion of concrete beam is equipped with waterproof boss, and the lower part of prefabricated wall body is equipped with the waterproof rabbet corresponding with waterproof boss position, and the width of waterproof rabbet is greater than the width of waterproof boss, forms width direction's fit-up clearance between waterproof boss and waterproof rabbet, installs the stagnant water strip that meets water inflation in the fit-up clearance, and the joint inside and outside of concrete beam and prefabricated wall body is equipped with outside caulking mortar and inboard caulking mortar respectively. The utility model discloses simple structure, shaping are easy, adopt grouting material, meet measures such as water inflation sealing rod, water proof coating, waterproofing membrane in self waterproof and the work progress through waterproof boss and waterproof tongue-and-groove, form "multiple water-proof measure", have avoided traditional mounting means clearance to form water channel, reduce the possibility that prefabricated outer wall bottom leaked.

Description

Waterproof structure of precast concrete outer wall bottom seam

Technical Field

The utility model relates to an assembled outer wall building structure, more specifically say, relate to a waterproof structure of precast concrete outer wall bottom seam.

Background

The assembly type building is a novel building form suitable for the national conditions of China, and is mainly characterized in that parts such as prefabricated columns, prefabricated beams, laminated slabs, prefabricated doors and windows and the like are prefabricated by a factory firstly, and then the prefabricated parts are transported to a construction site and assembled on the construction site. Compared with a cast-in-place structure, the fabricated building has the advantages of high production efficiency, high construction speed, small cast-in-place quantity of construction sites, energy conservation, environmental protection and the like.

The building waterproof quality is one of important indexes for judging the quality of a building, and poor waterproof effect not only can influence the service life of the building, but also can bring bad living experience to residents. Because the prefabricated components in the assembly type building are prefabricated in factories, the components have good leakage resistance and seepage resistance, but in the field assembly process, because the components need to be post-poured on site, the leakage resistance and the seepage resistance of the connecting parts are greatly influenced by the construction process and the construction quality, and the problems of water leakage and water seepage can exist. Wherein, the bottom of the pre-supporting outer wall is easy to cause the problems of water leakage, water seepage and the like because the grouting is not compact and the position is special on site.

Aiming at the waterproof problem of the outer wall of the fabricated building, many technical personnel also provide a coping scheme, such as a fabricated prefabricated outer wall joint structure and a fair-faced concrete outer wall construction method disclosed by Chinese patent application No. 201710176720.7, a novel fabricated building joint waterproof outer wall structure disclosed by Chinese patent application No. 201711427271.5, a fabricated shear wall outer wall joint waterproof structure disclosed by Chinese patent application No. 201811150169.X and the like. For example, patent 201710176720.7 discloses that steps and waterproof strips are arranged to prevent water, a drainage structure is additionally arranged in the interior, and after the waterproof strips on the outer side are broken through, the drainage structure is used to prevent further water seepage, but the drainage structure increases the design difficulty, and the drainage structure cannot completely prevent further water seepage, so that the waterproof effect is still to be further improved; patent 201711427271.5 realizes water resistance by matching the grooves and tenons on the upper and lower outer walls and arranging water-stop rubber rods in the grooves, and the mode has the defects that only one waterproof position is provided, and the groove and tenon structure increases the manufacturing difficulty when the upper and lower outer walls are prefabricated; patent 201811150169.X carries out water-proof treatment through breakwater, water bar, drainage channel, but it lacks the waterproof consideration of prefabricated wall body design initial stage, and the seam of upper and lower outer wall is the flush joint structure, and water-proof effects also awaits promoting.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to overcome the defects of the existing assembled outer wall bottom waterproof structure, and provides a precast concrete outer wall bottom seam waterproof structure, by adopting the technical scheme of the utility model, the leakage problem is considered in the design process, the waterproof boss is arranged on the concrete beam, the waterproof rabbet is arranged on the precast wall body, and the water-swelling water stop strip is arranged in the fit clearance between the waterproof boss and the waterproof rabbet, so that the effective water prevention of the bottom of the precast concrete outer wall is realized, and the structure is simple and the construction is convenient; simultaneously, waterproof coating and self-adhesive waterproof coiled material are arranged on the outer side of the joint of the concrete beam and the prefabricated wall body from inside to outside in sequence, grouting material is arranged inside the joint of the concrete beam and the prefabricated wall body, multiple waterproof measures are formed, a water channel formed by gaps in a traditional installation mode is avoided, the possibility of water leakage at the bottom of the prefabricated outer wall is reduced, and the waterproof effect is guaranteed.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a waterproof structure of precast concrete outer wall bottom seam locates the seam crossing of concrete beam and prefabricated wall body, the upper portion of concrete beam be equipped with waterproof boss, the lower part of prefabricated wall body be equipped with the corresponding waterproof rabbet of waterproof boss position, the width of waterproof rabbet be greater than the width of waterproof boss, form width direction's fit-up gap between waterproof boss and waterproof rabbet, fit-up gap in install and meet water inflation sealing rod, the seam inboard and outboard of concrete beam and prefabricated wall body be equipped with outside caulking mortar and inboard caulking mortar respectively.

Furthermore, a waterproof coating and a self-adhesive waterproof coiled material are sequentially arranged on the outer sides of the joints of the concrete beam and the prefabricated wall body from inside to outside.

Furthermore, the waterproof boss is arranged on one side of the concrete beam close to the indoor space, and the waterproof rabbet is correspondingly arranged on one side of the prefabricated wall body close to the indoor space.

Furthermore, the outer caulking mortar and the inner caulking mortar are arranged on the inner side and the outer side of a joint of the concrete beam and the prefabricated wall body through a mortar sitting method, a filling cavity formed by the upper surface of the concrete beam, a water swelling water stop bar, the lower surface of the prefabricated wall body and the outer caulking mortar is erected inside the joint of the concrete beam and the prefabricated wall body, the filling cavity is communicated with a grouting sleeve at the bottom of the prefabricated wall body, vertical reinforcing steel bars stretching into the grouting sleeve are pre-embedded in the concrete beam, and grouting materials are fully filled in the grouting sleeve and the filling cavity.

Furthermore, angle steel is embedded at the inner corner of the waterproof rabbet.

Furthermore, the cross-sectional dimension of the waterproof boss is 50 x 30mm²The section size of the waterproof rabbet is 70 multiplied by 30mm²。

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:

(1) the utility model discloses a waterproof structure of precast concrete outer wall bottom seam, it locates the seam crossing of concrete beam and precast wall body, in the design process promptly considering the seepage problem, set up waterproof boss on the concrete beam, set up waterproof rabbet on the precast wall body, and install the water swelling sealing rod in the fit clearance between waterproof boss and waterproof rabbet, realize the effective waterproof of precast concrete outer wall bottom, and simple structure, construction convenience;

(2) the utility model discloses a precast concrete outer wall bottom seam waterproof construction, the seam outside of its concrete beam and precast wall body is equipped with waterproof coating and self-adhesive waterproofing membrane from inside to outside in proper order, forms the twice waterproof measure in the seam outside, has improved the water-proof effects of bottom seam greatly;

(3) the utility model discloses a waterproof structure for the bottom joint of a precast concrete outer wall, a waterproof boss is arranged at one side of a concrete beam close to the indoor, a waterproof rabbet is correspondingly arranged at one side of a precast wall close to the indoor, outside caulking mortar and inside caulking mortar are arranged at the inner side and the outer side of the joint of the concrete beam and the precast wall through a mortar sitting method, the interior of a joint of the concrete beam and the prefabricated wall body is elevated to form a filling cavity communicated with a grouting sleeve at the bottom of the prefabricated wall body, vertical steel bars extending into the grouting sleeve are pre-embedded in the concrete beam, grouting materials are fully injected into the grouting sleeve and the filling cavity, and dense grouting at the joint is utilized to form multiple waterproof measures, so that the waterproof performance of the joint position is further improved, a water passage formed by gaps in the traditional installation mode is avoided, the possibility of water leakage at the bottom of the prefabricated outer wall is reduced, and the waterproof effect is ensured;

(4) the utility model discloses a waterproof structure of precast concrete outer wall bottom seam, the pre-buried angle steel that has of inboard corner of its waterproof tongue-and-groove, utilize the angle steel and meet the cooperation of water inflation sealing rod, the cooperation is inseparabler, has further prevented the infiltration of water.

Drawings

FIG. 1 is a schematic cross-sectional view of a waterproof structure for a bottom seam of a precast concrete outer wall according to the present invention;

fig. 2 is a partially enlarged view of the point K in fig. 1.

The reference numerals in the schematic drawings illustrate:

1. a concrete beam; 1-1, waterproof bosses; 2. prefabricating a wall body; 2-1, waterproof tongue-and-groove; 3. vertical reinforcing steel bars; 4. grouting a sleeve; 5. outside caulking mortar; 6. inner side caulking mortar; 7. a water-swelling sealing strip when meeting water; 8. angle steel; 9. grouting material; 10. a water-resistant coating; 11. self-adhesive waterproof coiled material.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

Examples

Referring to fig. 1 and 2, in the waterproof structure for the bottom joint of the precast concrete exterior wall of the embodiment, a waterproof boss 1-1 is arranged at the upper part of a concrete beam 1 and a precast wall body 2, a waterproof rabbet 2-1 corresponding to the waterproof boss 1-1 is arranged at the lower part of the precast wall body 2, the width of the waterproof rabbet 2-1 is larger than that of the waterproof boss 1-1, a fit gap in the width direction is formed between the waterproof boss 1-1 and the waterproof rabbet 2-1, a water-swelling water stop bar 7 is arranged in the fit gap, outer caulking mortar 5 and inner caulking mortar 6 are respectively arranged at the inner side and the outer side of the joint of the concrete beam 1 and the precast wall body 2, the outer caulking mortar 5 and the inner caulking mortar 6 are preferably non-shrinkage mortar, and the waterproof boss 1-1 is manufactured together when the concrete beam 1 is molded, the waterproof rabbet 2-1 is formed in the prefabrication process of the prefabricated wall body 2. According to the waterproof structure for the bottom joint of the precast concrete outer wall, in the design process, the leakage problem is considered, the waterproof boss 1-1 is arranged on the concrete beam 1, the waterproof groove 2-1 is arranged on the precast wall body 2, and the water-swelling water stop strip 7 is arranged in the fit clearance between the waterproof boss 1-1 and the waterproof groove 2-1, so that effective waterproofing of the bottom of the precast concrete outer wall is realized, the structure is simple, and the construction is convenient.

In addition, as shown in fig. 2, in order to further achieve waterproof on the outer side of the joint, a waterproof coating 10 and a self-adhesive waterproof roll 11 are sequentially arranged on the outer side of the joint of the concrete beam 1 and the prefabricated wall 2 from inside to outside, the setting width of the waterproof coating 10 at the joint is preferably 300mm, the setting width of the self-adhesive waterproof roll 11 at the joint is preferably 200mm, the self-adhesive waterproof roll 11 is arranged in the middle of the waterproof coating 10, the waterproof coating 10 can be made of a commercially available wall waterproof paint, and the self-adhesive waterproof roll 11 is a commercially available waterproof material. Two waterproof measures on the outer side of the seam are formed by the waterproof coating 10 and the self-adhesive waterproof roll 11, so that the waterproof effect of the bottom seam is greatly improved.

Referring to fig. 2, in the present embodiment, a waterproof boss 1-1 is provided on a side of a concrete beam 1 close to a room, and a waterproof rabbet 2-1 is correspondingly provided on a side of a prefabricated wall 2 close to the room. Specifically, the sectional size of the waterproof boss 1-1 may be designed to be 50 × 30mm²That is, the width is 50mm, the height is 30mm, and the section size of the waterproof groove 2-1 is 70 multiplied by 30mm²That is, the width is 70mm and the height is 30mm, and after the assembly and connection, the two can form a fitting gap of 20mm width in the width direction to mount the water-swellable seal 7, and the water-swellable seal 7 is also commercially availableThe product can expand and deform after meeting water, fills the whole fit clearance and achieves the waterproof effect. In addition, in the embodiment, the angle steel 8 is embedded in the inner corner of the waterproof rabbet 2-1, and the angle steel 8 is matched with the water-swelling water stop strip 7, so that the matching is tighter, and the water penetration is further prevented.

In addition, the waterproof structure of the bottom joint of the precast concrete outer wall of the embodiment is combined with an outer wall connecting structure organically, the outside caulking mortar 5 and the inside caulking mortar 6 are arranged on the inner side and the outer side of the joint of the concrete beam 1 and the precast wall body 2 through a mortar sitting method, the mortar sitting method is a conventional construction method in the building field, a filling cavity which is surrounded by the upper surface of the concrete beam 1, the water swelling water stop strip 7, the lower surface of the precast wall body 2 and the outside caulking mortar 5 can be formed by elevating the inside of the joint of the concrete beam 1 and the precast wall body 2 through a mortar sitting process, the filling cavity is communicated with the grouting sleeve 4 at the bottom of the precast wall body 2, the vertical reinforcing steel bars 3 extending into the grouting sleeve 4 are embedded in the concrete beam 1, and the grouting sleeve 4 and the filling cavity are filled with grouting material 9. Grouting material 9 is when connecting vertical reinforcing bar 3 and grout sleeve 4, can realize the closely knit grout of seam crossing, forms "multiple waterproof measure", has further improved the waterproof performance of seam position, has avoided traditional mounting means clearance to form water channel, reduces the possibility that prefabricated outer wall bottom leaked, has guaranteed water-proof effects.

Referring to fig. 1, in the waterproof structure for the bottom joint of the precast concrete exterior wall of the embodiment, when a precast wall 2 is precast, considering the influence of rainwater leakage, a waterproof rabbet 2-1 is arranged on the inner side of the lower part of the precast wall 2, and a waterproof boss 1-1 is arranged on a concrete beam 1 at the lower part of the precast wall 2, so as to form a precast concrete waterproof method; before the prefabricated wall body 2 is installed on site, the water-swelling water stop strip 7 is placed in place, then the prefabricated wall body 2 is installed by adopting a mortar setting method, the wall body grouting construction is completed, waterproof paint is coated to form a waterproof coating 10, and finally the self-adhesive waterproof coiled material 11 is paved.

The utility model discloses a precast concrete outer wall bottom seam waterproof construction, simple structure, shaping are easy, adopt grouting material, meet measures such as water inflation sealing rod, water proof coating, waterproofing membrane in self waterproof and the work progress through waterproof boss and waterproof tongue-and-groove, form "multiple water-proof measure", have avoided traditional mounting means clearance to form water channel, reduce the possibility that precast outer wall bottom leaked.

The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without creatively designing the similar structural modes and embodiments to the technical solutions, they should belong to the protection scope of the present invention.

Claims

1. The utility model provides a waterproof structure of precast concrete outer wall bottom seam, locates the seam crossing of concrete beam (1) and prefabricated wall body (2), its characterized in that: the waterproof concrete beam is characterized in that a waterproof boss (1-1) is arranged at the upper part of the concrete beam (1), a waterproof rabbet (2-1) corresponding to the waterproof boss (1-1) is arranged at the lower part of the prefabricated wall body (2), the width of the waterproof rabbet (2-1) is larger than that of the waterproof boss (1-1), a fit gap in the width direction is formed between the waterproof boss (1-1) and the waterproof rabbet (2-1), a water swelling water stop bar (7) is installed in the fit gap, and outer caulking mortar (5) and inner caulking mortar (6) are respectively arranged on the inner side and the outer side of a joint of the concrete beam (1) and the prefabricated wall body (2).

2. The precast concrete outer wall bottom joint waterproof construction of claim 1, characterized in that: the concrete beam (1) and the prefabricated wall body (2) are provided with a waterproof coating (10) and a self-adhesive waterproof coiled material (11) from inside to outside in sequence.

3. The precast concrete outer wall bottom joint waterproof construction as set forth in claim 1 or 2, wherein: the waterproof boss (1-1) is arranged on one side, close to the indoor, of the concrete beam (1), and the waterproof rabbet (2-1) is correspondingly arranged on one side, close to the indoor, of the prefabricated wall body (2).

4. The precast concrete outer wall bottom joint waterproof construction of claim 3, characterized in that: outside caulking mortar (5) and inboard caulking mortar (6) locate the seam inside and outside of concrete beam (1) and prefabricated wall body (2) through the setting method, set up the high filling chamber that forms by concrete beam (1) upper surface, water swelling sealing rod (7), prefabricated wall body (2) lower surface and outside caulking mortar (5) enclose inside the seam of concrete beam (1) and prefabricated wall body (2), this filling chamber communicates with each other with grout sleeve (4) of prefabricated wall body (2) bottom, concrete beam (1) in pre-buried vertical reinforcing bar (3) that stretch into in grout sleeve (4), grout sleeve (4) and filling intracavity fill grout material (9).

5. The precast concrete outer wall bottom joint waterproof construction of claim 4, characterized in that: and angle steel (8) is embedded at the inner corner of the waterproof rabbet (2-1).

6. The precast concrete outer wall bottom joint waterproof construction of claim 5, characterized in that: the cross section of the waterproof boss (1-1) is 50 multiplied by 30mm²The section size of the waterproof rabbet (2-1) is 70 multiplied by 30mm²。