Fabricated prefabricated wall joint waterproof structure
By setting L-shaped embankments and inverted L-shaped exterior walls at the joints of precast walls, combined with waterproofing measures such as water-stop sealing strips, grouting cavities, and pressure-reducing cavities, the waterproofing problem at the joints of precast assembled buildings was solved, achieving a highly efficient waterproofing effect.
Patent Information
- Application Number
- CN202423083638.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2034-12-13
AI Technical Summary
The waterproofing effect at the assembly joints of prefabricated buildings is poor, which can easily become channels for water seepage and affect the building's functionality.
An L-shaped sill and an inverted L-shaped prefabricated exterior wall are set at the joint of the precast wall to form a tongue-and-groove joint that is higher on the inside and lower on the outside. A water-stop sealing strip is installed in the joint to separate it into an independent grouting cavity and a pressure-reducing cavity. Grout is injected and combined with multiple waterproofing measures such as water-proof eaves, waterproof coatings, and water-sensitive color-changing stickers.
It significantly improves the waterproofing quality at the joints of precast walls, reduces the possibility of leakage, lowers later maintenance costs, and ensures that water does not easily penetrate into the room.
Smart Images
Figure CN223813821U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of building construction, specifically relates to a prefabricated wall jointing stub place waterproof structure. BACKGROUND
[0002] The prefabricated wall is a form mostly used in the PC building in the domestic at present, because the prefabricated wall is assembled in blocks, the waterproof treatment problem of the assembled joint is inevitably encountered, and the prefabricated wall waterproof node processing work is always a very important link in the building construction in the waterproof engineering of the building, because the waterproof effect is directly related to whether the future use function of the building is perfect, and the house that often leaks cannot satisfy the demand of user's residence and use.
[0003] Because the water flow is very strong and is all-pervading, therefore the most important design concept of the traditional building waterproof is to block water, and the channel that all water flows can enter the indoor is blocked to play the waterproof effect, and the concept is used on the traditional cast-in-place structure building and can still achieve the ideal effect, but for the prefabricated assembly building, the effect may not be so ideal, because the on-site assembled component will leave a large number of assembled joints, and the joints are easily become the channel of water flow penetration, therefore the prefabricated assembly building actually has certain congenital weakness in waterproof. CONTENT OF THE UTILITY MODEL
[0004] The technical problem to be solved by the utility model is to provide a prefabricated wall jointing stub place waterproof structure to overcome the above-mentioned deficiencies in the prior art.
[0005] The technical scheme for solving the above-mentioned technical problem of the utility model is as follows:
[0006] A prefabricated wall jointing stub place waterproof structure, comprising:
[0007] The ridge and the prefabricated outer wall arranged above the ridge, the ridge is L-shaped, the prefabricated outer wall is inverted L-shaped, the ridge and the prefabricated outer wall form a rabbet joint with high inside and low outside at the jointing stub place, a waterstop sealing strip in the compressed state is arranged along the two edge lines of the outer convex segment of the ridge and along the two edge lines of the outer convex segment of the prefabricated outer wall in the rabbet joint, the internal space of the rabbet joint is divided into two grouting cavities and a decompression cavity which are independent of each other via the four waterstop sealing strips, the two grouting cavities are different in height and have high inside and low outside, the decompression cavity is distributed along the vertical direction and is between the two grouting cavities, and the grouting cavities are filled with grout.
[0008] On the basis of the above-mentioned technical scheme, the utility model can also be improved as follows.
[0009] Further, the material of the waterstop sealing strip is foamed rubber or compressible EVA.
[0010] Further, the width of the water stop sealing tape is 15mm-20mm.
[0011] Further, a water avoiding eave is arranged above the rabbet joint on the outer wall surface of the assembled outer wall.
[0012] Further, the water avoiding eave is integrally formed with the assembled outer wall, and the lower surface of the water avoiding eave is flush with the lower surface of the outer convex segment of the assembled outer wall.
[0013] Further, a waterproof coating layer is coated on the outer side of the rabbet joint.
[0014] Further, a water color changing sticker is pasted on the inner side of the rabbet joint.
[0015] Further, the sill has steel bars distributed along the vertical direction in the area where the grouting cavity is located.
[0016] The beneficial effects of the present application are:
[0017] 1) Through multiple waterproof measures, a waterproof structure at the joint of the assembled prefabricated wall is formed, which can greatly increase the waterproof quality of the joint of the assembled prefabricated wall, and minimize the possibility of seepage and maintenance cost in the later period;
[0018] 2) The water stop sealing tape is used as a cavity sealing means and is divided into two independent grouting cavities and one decompression cavity. The grouting cavities are in the form of independent individuals, which can solve the problem of seepage caused by the lack of sealing strength of the traditional grouting process. Under the condition of meeting certain waterproof requirements, the grouting quality can be guaranteed. The decompression cavity is used to drain water and air, which can solve the problem of water flowing through capillary action and breaking through the outer waterproof layer into the room, and achieve the effect of completely blocking the external water. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a sectional view of the waterproof structure at the joint of the assembled prefabricated wall.
[0020] Figure 2 It is a structure diagram of the remaining structure of the waterproof structure at the joint of the assembled prefabricated wall after removing the assembled outer wall.
[0021] In the drawings, the components represented by each reference numeral are listed as follows:
[0022] 1, sill, 110, steel bar, 2, assembled outer wall, 210, water avoiding eave, 3, rabbet joint, 4, water stop sealing tape, 5, decompression cavity, 6, grouting material, 7, waterproof coating layer, 8, water color changing sticker, 9, grouting cavity. DETAILED DESCRIPTION
[0023] The principles and characteristics of the present application are described below in conjunction with the accompanying drawings, and the examples are used to explain the present application and are not intended to limit the scope of the present application.
[0024] Example 1
[0025] As shown in Figure 1 , Figure 2 A kind of assembled prefabricated wall joint stub is prevented from being wet structure, comprising:
[0026] Kan platform 1 and assembled outer wall 2, assembled outer wall 2 is arranged above kan platform 1, kan platform 1 is L type, assembled outer wall 2 is inverted L type, kan platform 1 is concrete cast-in-place component, assembled outer wall 2 is prefabricated assembled component, a inner high outer low rabbet 3 is formed between kan platform 1 and assembled outer wall 2 at joint stub, to realize the inner high outer low rabbet 3, with 300mm thick kan platform 1 and assembled outer wall 2 as an example: the thickness of the outer convex section of kan platform 1 is 140mm, the thickness of the straight section of kan platform 1 is 160mm, the thickness of the straight section of assembled outer wall 2 is 160mm, the thickness of the outer convex section of assembled outer wall 2 is 140mm, when assembled outer wall 2 is arranged above kan platform 1, it can form an inner high outer low rabbet 3;
[0027] A waterstop sealing band 4 in compression state is arranged in the rabbet 3 along two edge lines of the outer convex section of kan platform 1, a waterstop sealing band 4 in compression state is arranged in the rabbet 3 along two edge lines of the outer convex section of assembled outer wall 2, that is, the entire scheme actually has four waterstop sealing bands 4, the waterstop sealing band 4 is higher than the rabbet 3 in initial state, when assembled outer wall 2 is pressed on the waterstop sealing band 4, the waterstop sealing band 4 will be flattened, and it still has a certain elasticity after being flattened, so that sealing can be realized, the waterstop sealing band 4 is placed on the corresponding position of kan platform 1 first, and then assembled outer wall 2 is hoisted;
[0028] The inner space of the rabbet joint 3 is divided into two grouting cavities 9 and a decompression cavity 5 by four water-stop sealing strips 4, the two grouting cavities 9 are at different heights, the decompression cavity 5 is vertically distributed between the two grouting cavities 9, and the width of the decompression cavity 5 is 20 mm in the case of the 300 mm thick sill 1 and the fabricated external wall 2, the grouting cavities 9 are filled with grouting material 6, the water-stop sealing strips 4 can isolate the cavities and prevent water from leaking, the water-stop sealing strips 4 are not water-absorbing, which can prevent shrinkage caused by absorbing water in the grouting cavities 9, the decompression cavity 5 can prevent water from flowing into the room through capillary action, the cavities can balance the air pressure inside and outside, reduce water flow, and block and collect water, and the grouting material 6 is filled into the grouting cavities 9 after the fabricated external wall 2 is hoisted and leveled, and the grouting material 6 can play a certain self-waterproofing role.
[0029] Embodiment 2
[0030] As shown in Figure 1 , Figure 2 , this embodiment is a further improvement based on embodiment 1, and the specific improvements are as follows:
[0031] The material of the water-stop sealing strip 4 is preferably foamed rubber or compressible EVA, for example, if the height of the rabbet joint 3 is 2 cm, the water-stop sealing strip 4 is compressed to 2 cm, and still has a certain elasticity.
[0032] Embodiment 3
[0033] As shown in Figure 1 , Figure 2 , this embodiment is a further improvement based on embodiment 1 or 2, and the specific improvements are as follows:
[0034] The width of the water-stop sealing strip 4 is not less than 15 mm, and is preferably 15 mm to 20 mm.
[0035] Embodiment 4
[0036] As shown in Figure 1 , this embodiment is a further improvement based on any one of embodiments 1 to 3, and the specific improvements are as follows:
[0037] A water-shedding eave 210 is arranged above the rabbet joint 3 on the outer wall surface of the fabricated external wall 2, which reduces the water source converging to the joint, in this embodiment, the water-shedding eave 210 is integrally formed with the fabricated external wall 2, only a recess is designed on the corresponding position of the mold to form the water-shedding eave 210, a simple and slight change makes the joint staggered, and the lower surface of the water-shedding eave 210 is flush with the lower surface of the outer convex segment of the fabricated external wall 2.
[0038] Embodiment 5
[0039] As shown in the drawings, the present embodiment is a further improvement on the basis of any one of Embodiments 1-4, and the specific improvements are as follows: Figure 1
[0040] A waterproof coating layer 7 is applied to the outside of the rabbet joint 3, which is the last waterproof process for the outermost joint after the hoisting and grouting construction of the external wall is completed.
[0041] Embodiment 6
[0042] As shown in the drawings, the present embodiment is a further improvement on the basis of any one of Embodiments 1-5, and the specific improvements are as follows: Figure 1
[0043] A water color-changing sticker 8 is attached to the inside of the rabbet joint 3, which uses water-soluble dyes and water-soluble resins to change color when it comes into contact with water, making it easier to determine whether the joint has leaked.
[0044] Embodiment 7
[0045] As shown in the drawings, the present embodiment is a further improvement on the basis of any one of Embodiments 1-6, and the specific improvements are as follows: Figure 2
[0046] The steel bars 110 are vertically distributed in the area where the grouting cavity 9 is located on the sill 1.
[0047] Implementation steps:
[0048] The size and shape of the sill 1 and the fabricated external wall 2 are determined according to the actual situation of the project. To ensure that the two can be accurately spliced together, the formwork setting size of the sill 1 is strictly controlled before concrete pouring;
[0049] After the sill 1 is poured, removed from the formwork, and chiseled, it should be ensured that the sill 1 and the fabricated external wall 2 have no obvious deformation or damage, and the shape and size meet the construction requirements. Four water stop sealing strips 4 are arranged on the sill 1 at the corresponding positions, and the height of the water stop sealing strips 4 meets the requirements of the joint height after the fabricated external wall 2 is hoisted and pressed (generally 20mm, depending on the specific material and engineering elevation requirements). After the water stop sealing strips 4 are arranged, the fabricated external wall 2 is hoisted and leveled;
[0050] After the fabricated external wall 2 is hoisted, the internal space of the rabbet joint 3 is divided into two independent grouting cavities 9 and one pressure-reducing cavity 5 by the four water stop sealing strips 4, i.e. three independent spaces. Then, the grouting material 6 is poured into the grouting cavities 9;
[0051] Finally, waterproof coating layer 7 is applied to the outside of the rabbet joint 3, and water-sensitive paper 8 is attached to the inside of the rabbet joint 3, thereby completing the assembled precast wall joint waterproof structure.
[0052] If the joint cannot meet the requirements of forming a closed space due to lack of edges and corners during construction, a sealing material can be used to assist in sealing the strip to complete the plugging. For rooms or buildings with particularly high waterproofing requirements, polyurethane waterproofing can be applied inside the sealing strip to enhance the reliability of the waterproofing.
[0053] By forming a rabbet joint 3 between the sill 1 and the assembled external wall 2 at the joint, the rabbet joint 3 can make it difficult for water flowing into the joint to flow back into the room, serving as the first waterproofing measure.
[0054] A pressure reduction cavity 5 is reserved inside the rabbet joint 3 to prevent water from entering the room through capillary action, serving as the second waterproofing measure.
[0055] The water stop sealing strip 4 is used as a gasket and an internal cavity formwork. The water stop sealing strip 4 not only serves as a formwork and gasket, but also forms multiple waterproof lines, serving as the third waterproofing measure.
[0056] The grout 6 filled in the grouting cavity 9 is dense and can provide a certain self-waterproofing effect, serving as the fourth waterproofing measure.
[0057] The water-avoiding eave 210 can prevent rainwater and sewage from reaching the joint, serving as the fifth waterproofing measure.
[0058] After installation, a waterproof coating layer 7 is applied to the outside of the rabbet joint 3, serving as the sixth waterproofing measure.
[0059] Water-sensitive paper 8 is attached to the inside of the rabbet joint 3 to monitor the waterproofing quality of the joint in real time.
[0060] The above six waterproofing measures constitute the assembled precast wall joint waterproof structure, which can greatly improve the waterproofing quality of the assembled precast wall joint, minimize the possibility of leakage at the joint, and reduce maintenance costs in the future.
[0061] The water stop sealing strip 4 is used as a cavity sealing means and is divided into two independent grouting cavities 9 and one pressure reduction cavity 5. The grouting cavities 9, being independent entities, solve the problem of leakage caused by insufficient grouting and cavity sealing strength in traditional processes when grouting, and can ensure the grouting quality under certain waterproofing requirements.
[0062] The pressure reduction cavity 5 is used to drain water and air, solving the problem of water entering the room through capillary action, and achieving the effect of completely blocking external water.
[0063] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.
Claims
1. A waterproof structure at a joint of fabricated prefabricated walls, characterized by, The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method.
2. The waterproof structure at the joint between prefabricated walls according to claim 1, characterized in that, The application relates to a kind of prefabricated outer wall and its construction method.
3. The waterproof structure at the joint between the prefabricated wall and the precast piece according to claim 1, characterized in that, The application relates to a kind of prefabricated outer wall and its construction method.
4. The waterproof structure at the joint between the prefabricated wall and the precast piece according to claim 1, characterized in that, The application relates to a kind of prefabricated outer wall and its construction method.
5. The waterproof structure at the joint between the prefabricated walls according to claim 4, characterized in that, The application relates to a kind of prefabricated outer wall and its construction method.
6. The waterproof structure at the joint between the prefabricated walls according to claim 1, characterized in that, The application relates to a kind of prefabricated outer wall and its construction method.
7. The waterproof structure at the joint between the prefabricated walls according to claim 1, characterized in that, The application relates to a kind of prefabricated outer wall and its construction method.
8. The waterproof structure at the joint between the prefabricated walls according to claim 1, characterized in that, The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction method. The application relates to a kind of prefabricated outer wall and its construction