Advanced water stop structure for basement exterior wall post-cast strip

Abstract

The utility model belongs to the technical field of constructional engineering, and particularly relates to an advanced water stop structure for a basement exterior wall post-cast strip. According to the advanced water stop structure for the basement outer wall post-cast strip, the bottom edge waterproof strips, the side edge waterproof strips and the fixing screw units are arranged on the cover plate units, so that the fixing mode of the advanced water stop structure has no structural requirement on a wall body, and the use convenience of the advanced water stop structure is improved; waterproof structures are arranged on the bottom edge and the two side edges of each cover plate unit, and it is guaranteed that water cannot enter the reserved seam of the post-cast strip easily.

Description

Technical Field

[0001] The utility model belongs to the technical field of building engineering, and particularly relates to an advanced water-stopping structure for a post-cast strip of a basement outer wall. Background Art

[0002] The exterior wall of the basement refers to the wall that is cast on the basement floor, and the outer side is the backfill soil layer of the foundation pit. The post-cast strip refers to the concrete structure that is cast and solidified in the interval between the concrete structures that are cast and solidified first. The function of the post-cast strip is to prevent harmful cracks in the reinforced concrete structure due to its own uneven shrinkage or settlement. Therefore, correspondingly, not only the wall has a post-cast strip, but also the floor, beam and other concrete structures need to be equipped with a post-cast strip.

[0003] In other words, the function of the above-mentioned interval is to accommodate, receive and allow the inevitable relative displacement occurring at the concrete structures on both sides. When the position and size of the concrete structures on both sides are stable, the post-cast strip is poured.

[0004] However, precisely because the post-cast strip needs to be poured "later", the interval left on the outer wall of the basement has at least the following two hazards:

[0005] First, the water in the foundation pit will enter the basement at this interval, affecting the normal construction of the basement;

[0006] Second, due to the existence of the above-mentioned gaps, the foundation pit soil layer cannot be backfilled to a large extent, otherwise the foundation pit soil will easily enter the basement, and ultimately indirectly delay the entire construction progress.

[0007] Therefore, the above-mentioned advanced water-stopping structure was later developed, and its function is to block the outside of the above-mentioned interval. Therefore, the advanced water-stopping structure needs to have at least the following two functions: first, sufficient waterproof sealing; second, sufficient lateral support strength.

[0008] After the advanced water-stop structure is set up, the foundation pit soil layer can be backfilled, and the post-cast strip can still be "delayed" poured, and it is not easy for water to enter the basement and the foundation pit soil.

[0009] For example, a Chinese utility model patent with authorization announcement number CN218204589U and authorization announcement date 2023.01.03 discloses an advance water-stopping structure for the post-cast strip of the exterior wall of a basement, including: a wall and a pad groove, the upper surface of the pad groove is provided with a waterproof coating, the upper surface of the waterproof coating is provided with a waterproof pad, the top of the waterproof pad is provided with a cement slurry layer, the upper surface of the cement slurry layer is cast with a wall, a post-cast strip is provided in the middle of the top of the wall, connecting main bars are installed on both sides of the top of the pad groove, the connecting main bars on both sides are connected to the inside of the wall, and supporting steel bars are installed near the bottom gap position of the connecting main bars on both sides.

[0010] The general structural principle and advantages of the advance water-stopping structure of the post-cast strip in this utility model patent are as follows: an aluminum alloy cover plate and water-swelling rubber are provided to achieve the effect of protecting the joint of the post-cast strip, so as to solve the problem that during the placement of the post-cast strip, debris and sewage penetrate into the joint and require secondary cleaning, thereby reducing the probability of secondary cleaning of the post-cast strip, thereby ensuring the subsequent use of the advance water-stopping structure.

[0011] However, the advanced water-stopping structure has at least the following two shortcomings in actual use on the post-casting strip, which are also the technical problems to be solved by the utility model, namely:

[0012] First, the fixing method of the aluminum alloy cover plate is to set embedded parts on the wall, set buckles on the cover plate, and finally buckle the two together. This fixing method has specific requirements on the structure of the walls on both sides, and needs to set embedded parts with matching quantity, position and size, which is troublesome and impractical.

[0013] Second, although water-swelling rubber is provided between the side of the aluminum alloy cover and the wall, providing adequate waterproof performance, there is a lack of waterproof structure between the bottom edge of the cover and the floor, making it relatively easy for water to enter.

[0014] Therefore, in summary, there is an urgent need for a new type of advanced water-stop structure with a simple installation method for the water-stop cover plate and sufficient waterproof performance on the bottom and sides of the cover plate, so as to be used in the post-cast strip of the basement outer wall. Utility Model Content

[0015] The utility model provides an advanced waterproofing structure for the post-cast strip of the outer wall of a basement, which can be achieved by arranging a bottom waterproofing strip, a side waterproofing strip, and fixing a screw unit on a cover plate unit, so that: 1. the fixing method of the advanced waterproofing structure has no structural requirements on the wall, thereby improving its convenience in use; 2. the bottom edge and two side edges of the cover plate unit are provided with waterproof structures, thereby ensuring that water is not easy to enter the reserved seam of the post-cast strip.

[0016] The technical solution adopted by the utility model to solve the above-mentioned problem is: an advanced water-stopping structure for the post-cast strip of the basement exterior wall, including a cover unit, a bottom waterproof strip arranged on the floor and used to support the cover unit, two side waterproof strips respectively arranged at both sides of the upper surface of the bottom waterproof strip and used to support the cover unit on the wall, and a fixed screw unit arranged on the cover unit and located between two walls and used to connect the opening formwork.

[0017] A further preferred technical solution is that the cover plate unit includes a rectangular plate body provided with the fixing screw unit.

[0018] A further preferred technical solution is that the cover plate unit also includes a waterproof strip thickness compensation plate which is arranged on the rectangular plate body, is provided with the fixing screw unit, and is used to clamp the two walls.

[0019] A further preferred technical solution is that the cover plate unit also includes an inverted L-shaped limiting plate arranged on the rectangular plate body and used for transversely clamping the bottom edge waterproof strip on the wall.

[0020] A further preferred technical solution is that the cover plate unit also includes elastic plates which are respectively arranged on two side edges of the rectangular plate body, fit the wall, and are used to set the waterproof coiled material.

[0021] A further preferred technical solution is that the side of the bottom waterproof strip used for clamping the wall is flush with the side of the side waterproof strip used for clamping the wall, and the width of the bottom waterproof strip is greater than that of the side waterproof strip.

[0022] A further preferred technical solution is that the fixed screw unit includes a transverse screw arranged on the cover unit, located between the two walls and used for inserting the hole template, and a fastening nut arranged on the transverse screw and used for clamping the hole template.

[0023] A further preferred technical solution is that the fixing screw rod unit further comprises a reinforcement hole which is arranged on the transverse screw rod and is used to pass through the wall to expose the steel bar.

[0024] A further preferred technical solution is that two of the fastening nuts are provided on a single transverse screw.

[0025] A further preferred technical solution is that the transverse screws are evenly spaced and arranged in a linear manner, with 1-2 rows and 4-10 screws in each row. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the utility model.

[0027] Figure 2 It is a schematic diagram of the usage of the utility model from a top view.

[0028] Figure 3 This is a schematic diagram of the position and shape of the bottom edge waterproof strip and the two side edge waterproof strips in the utility model.

[0029] Figure 4 It is a schematic diagram of the position and shape of the inverted L-shaped limiting plate in the utility model.

[0030] Figure 5 It is a schematic diagram of the use of the inverted L-shaped limiting plate in the utility model.

[0031] Figure 6 It is a schematic diagram of the use of the elastic plate in the utility model from a top view.

[0032] Figure 7 It is a schematic diagram of the shape of the hole template in the utility model.

[0033] Figure 8 It is a schematic diagram of the position structure of the fixed screw unit in the utility model.

[0034] In the figure, the meanings of the symbols are as follows:

[0035] Floor a, wall b, open formwork c, waterproofing membrane d, exposed steel bars in the wall e, backfill soil f;

[0036] Cover plate unit 1, bottom waterproof strip 2, side waterproof strip 3, fixing screw unit 4;

[0037] Rectangular plate body 101 , waterproof strip thickness compensation plate 102 , inverted L-shaped limit plate 103 , elastic plate 104 , transverse screw rod 401 , fastening nut 402 , reinforcement hole 403 . DETAILED DESCRIPTION

[0038] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0039] As attached Figure 1-8 As shown, an advance water-stopping structure for the post-cast strip of the basement exterior wall includes a cover unit 1, a bottom edge waterproof strip 2 arranged on a floor a and used to support the cover unit 1, two side waterproof strips 3 respectively arranged at both sides of the upper surface of the bottom edge waterproof strip 2 and used to support the cover unit 1 on the wall b, and a fixing screw unit 4 arranged on the cover unit 1 and located between the two walls b and used to connect the opening template c.

[0040] In this embodiment, the cover plate unit 1 and the fixing screw unit 4 are integrally formed, and the main body material is stainless steel or aluminum alloy. The bottom waterproof strip 2 and the two side waterproof strips 3 are integrally formed, and the material is common waterproof rubber, such as polyurethane rubber, chloroprene rubber or ethylene propylene rubber.

[0041] The main body of the cover unit 1 is a rectangle, with the wide side of the rectangle placed horizontally, the wide side size is larger than the width of the reserved seam of the post-casting strip, and the long side size is larger than the depth of the backfill soil f, and can be smaller than the vertical size of the wall b. In other words, in order to speed up the construction schedule, the post-casting strip can be poured in two times, and the upper surface of the post-casting strip after the first pouring is significantly higher than the upper surface of the backfill soil f, and there is no risk of water ingress.

[0042] In addition, the fixing screw unit 4 is used to tighten the hole template c, so that the hole template c and the cover unit 1 are fully pressed on the wall b, ensuring that the two side waterproof strips 3 have sufficient compression and waterproofing effects. Accordingly, the lateral width of the hole template c should also be greater than the width of the reserved seam of the post-casting belt.

[0043] Finally, the cover unit 1 relies on its own weight to press down the bottom waterproof strip 2, so that it is also fully pressed against the floor a, ensuring that the bottom edge of the cover unit 1 is also not easy to be penetrated by water.

[0044] The cover plate unit 1 includes a rectangular plate body 101 provided with the fixing screw unit 4 .

[0045] In the prior art, the upper surface height of the backfill soil f is generally lower than the upper surface height of the wall b. Therefore, the top edge height of the rectangular plate 101 only needs to be higher than the expected upper surface height of the backfill soil f. Of course, it cannot be just 1-2 cm higher, for example, because the possible accumulation of water due to rainfall at the construction site must also be taken into consideration.

[0046] At this point, the reserved joints of the post-casting belt will at least not enter the foundation pit soil.

[0047] The cover plate unit 1 further comprises a waterproof strip thickness compensation plate 102 which is arranged on the rectangular plate body 101 and is provided with the fixing screw unit 4 and is used for clamping the two walls b.

[0048] In this embodiment, when the side waterproof strip 3 is used under pressure, it still has a certain thickness, that is, the rectangular plate 101 cannot fit the wall b, so the waterproof strip thickness compensation plate 102 is provided, and its functions include at least:

[0049] First, the rectangular plate 101 is indirectly attached to the wall b, and the two are parallel to each other, so as to avoid the problem of inconsistent compression amplitude of the two side waterproof strips 3. As long as the waterproof strip thickness compensation plate 102 is attached to the wall b, the compression and waterproof effect of a single side waterproof strip 3 is sufficient and appropriate, and the compression and waterproof effect of the two side waterproof strips 3 is consistent;

[0050] Second, appropriately increase the weight of the cover unit 1 to fully compress the bottom waterproof strip 2 .

[0051] The bottom edge of the waterproof strip thickness compensation plate 102 is flush with the bottom edge of the rectangular plate body 101 , and the width of the waterproof strip thickness compensation plate 102 is greater than the width of the reserved seam of the post-casting belt and smaller than the width of the rectangular plate body 101 .

[0052] At this time, the fixing screw unit 4 is directly arranged on the waterproof strip thickness compensation plate 102 .

[0053] The cover plate unit 1 further includes an inverted L-shaped limiting plate 103 which is arranged on the rectangular plate body 101 and is used for transversely clamping the bottom edge waterproof strip 2 on the wall body b.

[0054] In this embodiment, the bottom edge waterproof strip 2 can only achieve adequate waterproof performance if it fully presses down the floor a vertically and fully clamps the wall b horizontally. The former can be achieved by relying on the weight of the cover unit 1 and the initial downward pressure applied by the operator when installing the cover unit 1, while the latter is relatively difficult to achieve, which is the purpose of setting the inverted L-shaped limit plate 103.

[0055] When the cover unit 1 is attached to the wall b, the inverted L-shaped limit plate 103 can fully compress the bottom waterproof strip 2 laterally, so that it is not easy to leak between the bottom waterproof strip 2 and the wall b. At this time, the inverted L-shaped limit plate 103 can be slightly deformed, that is, its vertical section bends outward.

[0056] It should be noted that the length of the inverted L-shaped limit plate 103 is greater than the width of the reserved seam of the post-casting strip. In other words, the relatively central part of the inverted L-shaped limit plate 103 is the "useless area" with relatively poor compaction effect, and the relatively side part of the inverted L-shaped limit plate 103 can be used to compact the "useful area" of the bottom waterproof strip 2.

[0057] The cover plate unit 1 further includes elastic plates 104 which are respectively arranged on two side edges of the rectangular plate body 101 and are in contact with the wall b and are used for setting the waterproof coiled material d.

[0058] In this embodiment, when the cover unit 1 is attached to the wall b, the elastic plate 104 bends itself and presses against the wall b. At this time, the waterproof roll d adheres the elastic plate 104 and the wall b, so that a new waterproof and mud-blocking structure can be established outside the side waterproof strip 3, further improving the water-stopping performance of the side waterproof strip 3.

[0059] It should be noted that the water-stopping performance obtained by the elastic plate 104 in cooperation with the waterproof membrane d is secondary and supplementary, and the bottom of the elastic plate 104 will still leak water inwards.

[0060] The bottom edge waterproof strip 2 is used to clamp the side of the wall b, and is flush with the side of the side waterproof strip 3 used to clamp the wall b. The width of the bottom edge waterproof strip 2 is greater than that of the side waterproof strip 3.

[0061] In this embodiment, the bottom waterproof strip 2 and the two side waterproof strips 3 clamp the wall b at the same time, ensuring that the entire side of the reserved seam of the post-casting strip is not easy to get water in. The length of the bottom waterproof strip 2 is greater than the width of the reserved seam of the post-casting strip, and it fully presses down the floor a. At this point, the reserved seam of the post-casting strip has complete water-stopping performance in principle.

[0062] The portion of the bottom waterproof strip 2 that is wider than the side waterproof strip 3 is used to vertically support the cover unit 1 so that the bottom waterproof strip 2 can obtain sufficient downward pressure.

[0063] The fixing screw unit 4 includes a transverse screw 401 disposed on the cover unit 1 and located between two walls b and used for inserting the perforated template c, and a fastening nut 402 disposed on the transverse screw 401 and used for clamping the perforated template c.

[0064] In this embodiment, one of the common fixing methods of the advanced water-stopping structure, namely the first method, is that the fastening nut 402 tightens the perforated template c so that the cover unit 1 is fully pressed against the wall b.

[0065] In addition, the second method is to set a frame on the indoor side of the wall b to lift the fastening nut 402 toward the indoor side, which can also fix the entire advanced water-stopping structure. When the foundation pit soil is fully backfilled, the soil layer itself can fully press the cover unit 1 on the wall b, and the frame can be removed at this time.

[0066] The advantage of the first method is that the perforated template c is needed when pouring the post-cast strip itself, and the fixed screw unit 4 can fix the pouring template, eliminating the trouble of first dismantling the frame, then re-setting the pouring template, and finally reinforcing the pouring template in the second method.

[0067] Therefore, the length of the transverse screw 401 is greater than the thickness of the wall b.

[0068] The fixing screw rod unit 4 further includes a reinforcement hole 403 which is arranged on the transverse screw rod 401 and is used to penetrate the wall to expose the steel bar e.

[0069] In this embodiment, the reinforcement hole 403 is used to connect the exposed steel bars e in the wall. The latter can first pass through the former and then be wound on the transverse screw 401 to ensure that the advanced water-stopping structure is installed more firmly.

[0070] On the other hand, the transverse screw rod 401 in the post-cast zone can play the same reinforcing role as reinforcing steel bars.

[0071] Two fastening nuts 402 are disposed on a single transverse screw rod 401 .

[0072] In this embodiment, the two fastening nuts 402 and the hole-opening template c are fully clamped together, so the difficulty of loosening the fastening nuts 402 can be greatly improved.

[0073] The transverse screws 401 are evenly spaced in a linear arrangement, with 1-2 rows and 4-10 screws in each row.

[0074] In this embodiment, the fixed screw unit 4 is located between the exposed steel bars e of the left and right groups of walls. Its function in the post-cast strip is similar to that of steel bars. Therefore, its number should not be too large, and its relative position should not be too concentrated. The multiple transverse screws 401 are evenly spaced in the horizontal and vertical directions, and the spacing distance is maximized to ensure that the transverse screws 401 tighten the effective area of ​​the cover unit 1 and cover the entire cover unit 1 as much as possible.

[0075] The above is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but the utility model is not limited to the above implementation. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the utility model. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the utility model.

Claims

1. An advanced water-stopping structure for the post-cast strip of the basement exterior wall, characterized in that: The invention comprises a cover unit (1), a bottom waterproof strip (2) arranged on a floor (a) and used to support the cover unit (1), two side waterproof strips (3) respectively arranged at two sides of the upper surface of the bottom waterproof strip (2) and used to support the cover unit (1) on a wall (b), and a fixing screw unit (4) arranged on the cover unit (1) and located between two walls (b) and used to connect a perforated template (c).

2. The advanced water-stopping structure for the post-cast strip of the basement exterior wall according to claim 1 is characterized by: The cover plate unit (1) comprises a rectangular plate body (101) provided with the fixing screw unit (4).

3. The advanced water-stopping structure for the post-cast strip of the basement exterior wall according to claim 2 is characterized by: The cover plate unit (1) also includes a waterproof strip thickness compensation plate (102) which is arranged on the rectangular plate body (101), is provided with the fixing screw unit (4), and is used to clamp the two walls (b).

4. The advanced water-stopping structure for the post-cast strip of the basement exterior wall according to claim 2 is characterized by: The cover plate unit (1) further comprises an inverted L-shaped limiting plate (103) arranged on the rectangular plate body (101) and used for transversely clamping the bottom edge waterproof strip (2) on the wall body (b).

5. The advanced water-stopping structure for the post-cast strip of the basement exterior wall according to claim 2 is characterized in that: The cover plate unit (1) further comprises elastic plates (104) respectively arranged on two side edges of the rectangular plate body (101), attached to the wall body (b), and used for arranging the waterproof coiled material (d).

6. The advanced water-stopping structure for the post-cast strip of the basement exterior wall according to claim 1 is characterized by: The side of the bottom waterproof strip (2) used for clamping the wall (b) is flush with the side of the side waterproof strip (3) used for clamping the wall (b), and the width of the bottom waterproof strip (2) is greater than that of the side waterproof strip (3).

7. The advanced water-stopping structure for the post-cast strip of the basement exterior wall according to claim 1 is characterized by: The fixing screw unit (4) comprises a transverse screw (401) arranged on the cover plate unit (1), located between two walls (b) and used for plugging the hole template (c), and a fastening nut (402) arranged on the transverse screw (401) and used for clamping the hole template (c).

8. The advanced water-stopping structure for the post-cast strip of the basement exterior wall according to claim 7 is characterized in that: The fixing screw rod unit (4) further comprises a reinforcement hole (403) arranged on the transverse screw rod (401) and used to penetrate the wall to expose the steel bar (e).

9. The advanced water-stopping structure for the post-cast strip of the basement exterior wall according to claim 7 is characterized in that: Two fastening nuts (402) are provided on a single transverse screw rod (401).

10. The advanced water-stopping structure for the post-cast strip of the basement exterior wall according to claim 7 is characterized in that: The transverse screws (401) are evenly spaced in a linear arrangement, with the number being 1-2 rows, and 4-10 screws in each row.

Images