Basement post-cast strip waterproof structure

Abstract

The basement post-cast strip waterproof structure comprises a cushion layer, a basement bottom plate and a post-cast strip. The post-cast strip is located between the two adjacent basement bottom plates, the cushion layer is located below the basement bottom plates and the post-cast strip, and the two sides of the post-cast strip are connected with the basement bottom plates through the double-layer water stop steel plates; the double-layer water stop steel plate comprises a first water stop plate, a second water stop plate and a positioning piece; the positioning piece is arranged between the first water stop plate and the second water stop plate, the first water stop plate and the second water stop plate are fixedly connected through the positioning piece, the positioning piece is located in a gap face between the basement bottom plate and the post-cast strip, and one end of the first water stop plate is anchored into the basement bottom plate and provided with a first bent part. The other end of the first water stop plate is anchored into the post-cast strip and is provided with a second bending part; one end of the second water stop plate is anchored into the basement bottom plate and provided with a third bent part, and the other end of the second water stop plate is anchored into the post-cast strip and provided with a fourth bent part.

Description

Technical Field

[0001] This application relates to the field of post-pouring strip technology, and in particular to a waterproof structure for post-pouring strips in basements. Background Technology

[0002] A post-cast strip refers to a temporary strip-shaped joint left during construction in a cast-in-place reinforced concrete structure, as needed for the project. It serves to absorb settlement and shrinkage deformation. After a period of time, it is then filled with concrete to form a continuous, monolithic structure. Existing waterproofing structures for basement post-cast strips can be referenced in CN211006775U, which describes a water-stop structure for a basement floor slab with a post-cast strip. This structure includes a cushion layer, a waterproof membrane layer, a waterproof protective layer, a water-resistant board, a pre-cast floor slab, and a post-cast strip. In this case, only one water-stop steel plate perpendicular to the joint is installed at the center of the joint on both sides between the pre-cast floor slab and the post-cast strip. However, in this existing technology, a single water-stop steel plate cannot guarantee its waterproof performance over long-term use. If subjected to high water pressure, the water-stop steel plate is prone to localized damage, leading to leakage at the joint between the basement floor slab and the post-cast strip, thus affecting the use of the basement. Summary of the Invention

[0003] In view of this, this application proposes a waterproof structure for a basement post-pouring strip, comprising: a subbase, a basement floor slab, and a post-pouring strip;

[0004] The post-pouring strip is located between two adjacent basement floor slabs, and the subbase is located below the basement floor slab and the post-pouring strip. Both sides of the post-pouring strip are connected to the basement floor slab by double-layer water-stop steel plates.

[0005] The double-layer waterstop steel plate includes a first waterstop plate, a second waterstop plate, and a positioning component. The positioning component is located between the first and second waterstop plates, and the first and second waterstop plates are fixedly connected by the positioning component. The positioning component is located within the gap between the basement floor slab and the post-cast strip.

[0006] One end of the first waterstop plate is anchored into the basement floor slab and has a first bend at that end; the other end of the first waterstop plate is anchored into the post-pouring strip and has a second bend at that end.

[0007] The surface of the second waterstop is parallel to the surface of the first waterstop. One end of the second waterstop is anchored into the basement floor slab and has a third bend. The other end of the second waterstop is anchored into the post-cast strip and has a fourth bend.

[0008] In one possible implementation, the surface of the positioning element is perpendicular to the surface of the first waterstop plate, and the positioning element is located in the middle of the first waterstop plate.

[0009] In one possible implementation, the width of both the first and second waterstop plates is 350 mm.

[0010] In one possible implementation, a first preset angle α is provided between the length direction of the first bend and the length direction of the first waterstop plate.

[0011] In one possible implementation, a second preset angle β is provided between the second bend and the first waterstop plate, and the second preset angle β is the same as the first preset angle α.

[0012] In one possible implementation, the basement floor slab is provided with a first support bar and a second support bar;

[0013] The length direction of the first supporting rib is parallel to the length direction of the second supporting rib.

[0014] In one possible implementation, two or more first transverse reinforcing bars are provided on the side of the first supporting bar facing the second supporting bar;

[0015] Two or more first transverse reinforcing bars are equidistantly arranged along the length of the first supporting bar.

[0016] In one possible implementation, two or more second transverse reinforcing bars are provided on the side of the second support bar facing the second support bar;

[0017] Two or more transverse reinforcing bars are equidistantly arranged along the length of the second supporting bar.

[0018] In one possible implementation, a waterproof layer is provided between the subbase and the post-cast strip.

[0019] Beneficial effects of this application

[0020] Compared to the single waterstop steel plate in existing technologies, the double-layer waterstop steel plate provides a double waterproof defense, improving the reliability of waterproofing. During long-term use, even if the first waterstop plate is damaged or seeps in, the second waterstop plate provides protection, reducing the risk of basement water seepage. At the same time, groundwater must bypass the double-layer waterstop steel plate to enter the basement through the joint between the post-cast strip and the basement floor slab. This significantly increases the length of the seepage path compared to bypassing a single waterstop steel plate, thus effectively enhancing the waterproofing effect.

[0021] The two ends of the positioning component are fixedly connected to the first waterstop plate and the second waterstop plate, respectively. The positioning component is located in the gap between the basement floor slab and the post-pouring strip, and the positioning component is located in the middle of the first waterstop plate. By setting the positioning component, it is ensured that the two ends of the first waterstop plate are anchored into the basement floor slab and the post-pouring strip with the same length, so that the first waterstop plate and the second waterstop plate can evenly cover the area that needs to be waterproofed, avoiding waterproofing gaps caused by installation deviations, such as one side not having a double-layer waterstop steel plate or the double-layer waterstop steel plate being too short.

[0022] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0024] Figure 1 This application shows a sectional view of the waterproof structure of the basement post-pouring strip;

[0025] Figure 2 A cross-sectional view of the double-layer waterstop steel plate of this application is shown. Detailed Implementation

[0026] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0027] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0030] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0031] This application proposes a waterproof structure for post-cast strips in basements, such as... Figure 1 , Figure 2 As shown, the system includes a foundation layer 300, a basement slab 100, a post-cast strip 200, and a double-layer waterstop steel plate 400. The post-cast strip 200 is located between two adjacent basement slabs 100. The foundation layer 300 is located below the basement slab 100 and the post-cast strip 200, and both sides of the post-cast strip 200 are connected to the basement slab 100 via the double-layer waterstop steel plate 400. The double-layer waterstop steel plate 400 includes a first waterstop plate 410, a second waterstop plate 420, and a positioning element 430. The positioning element 430 is disposed between the first waterstop plate 410 and the second waterstop plate 420, and the first waterstop plate 410 and the second waterstop plate 420 are connected by the positioning element 430. 0. Fixed connection, and the positioning member 430 is located in the gap between the basement floor slab 100 and the post-pouring strip 200; one end of the first waterstop 410 is anchored into the basement floor slab 100 and the end is provided with a first bend 411, and the other end of the first waterstop 410 is anchored into the post-pouring strip 200 and the end is provided with a second bend 412; the surface of the second waterstop 420 is parallel to the surface of the first waterstop 410, one end of the second waterstop 420 is anchored into the basement floor slab 100 and the end is provided with a third bend 421, and the other end of the second waterstop 420 is anchored into the post-pouring strip 200 and the end is provided with a fourth bend 422.

[0032] It should be noted that the subbase 300 provides foundation support for the basement slab 100 and the post-cast strip 200. Simultaneously, the subbase 300 prevents groundwater from rising to the plane containing the basement slab 100 and the post-cast strip 200, thus avoiding groundwater erosion of the basement structure. Since the basement slab 100 shrinks during the hardening process, large areas of the slab are prone to shrinkage cracks if poured in one go. The design of the post-cast strip 200 divides the large area of ​​the basement slab 100 into smaller areas, allowing for some shrinkage space after initial pouring, effectively reducing the occurrence of shrinkage cracks. The double-layer water-stop steel plate 400 effectively prevents groundwater from seeping into the basement through the gap between the post-cast strip 200 and the basement slab 100, ensuring the basement's dryness and safety. The double-layer water-stop steel plate 400 firmly connects the post-cast strip 200 and the basement slab 100, enhancing the overall stability and durability of the basement structure.

[0033] like Figure 1 , Figure 2 As shown, the first waterstop 410 is used to prevent groundwater from seeping into the joint between the post-cast strip 200 and the basement floor slab 100. When the first waterstop 410 is damaged and seeps in, the second waterstop 420 can promptly prevent water from seeping further into the basement. The second waterstop 420 and the first waterstop 410 work together to extend the seepage path of the groundwater and increase the difficulty of seepage. The two ends of the positioning member 430 are fixedly connected to the first waterstop 410 and the second waterstop 420 respectively, and the positioning member 430 is located in the gap between the basement floor slab 100 and the post-cast strip 200. The design of the positioning member 430 avoids relative displacement of the first waterstop 410 and the second waterstop 420, ensuring that the first waterstop 410 and the second waterstop 420 maintain the correct installation position between the basement floor slab 100 and the post-cast strip 200.

[0034] Compared with the single waterstop steel plate in the existing technology, the double-layer waterstop steel plate 400 provides a double waterproof defense, which improves the reliability of waterproofing. During long-term use, even if the first waterstop plate 410 is damaged or seeps in, the second waterstop plate 420 is there as a guarantee, reducing the risk of basement water seepage. At the same time, if groundwater wants to enter the basement through the joint between the post-pouring strip 200 and the basement floor slab 100, it must bypass the double-layer waterstop steel plate 400. This greatly increases the length of the seepage path compared to bypassing a single waterstop steel plate, thus effectively enhancing the waterproofing effect.

[0035] like Figure 1 , Figure 2 As shown, both the first bend 411 and the second bend 412 are inclined and face one side of the foundation 300. The first bend 411 increases the connection area between the first waterstop 410 and the basement floor slab 100, allowing the first waterstop 410 to be better anchored into the interior of the basement floor slab 100, thus enhancing the anchoring effect. At the same time, the design of the first bend 411 ensures a tight connection between the basement floor slab 100 and the first waterstop 410, reducing the amount of groundwater flowing from the first waterstop 410 to the basement floor slab 100. The second bend 412 increases the connection area between the first waterstop 410 and the post-pouring strip 200, allowing the first waterstop 410 to be better anchored into the interior of the post-pouring strip 200, thus enhancing the anchoring effect. At the same time, the design of the second bend 412 makes the post-pouring strip 200 and the first waterstop 410 form a tight connection, reducing the possibility of groundwater seeping from the connection between the first waterstop 410 and the post-pouring strip 200, thereby improving the waterproofing effect.

[0036] like Figure 1 , Figure 2As shown, the first bend 411 and the second bend 412 are both oriented towards one side of the cushion layer 300 and are inclined. When groundwater comes into contact with the first waterstop plate 410, due to the inclined arrangement of the first bend 411 and the second bend 412, the groundwater will flow along the inclined direction of the first bend 411 and the second bend 412, which makes the groundwater need to bypass the first bend 411 or the second bend 412 before it can continue to infiltrate, greatly increasing the difficulty of groundwater infiltration.

[0037] like Figure 1 , Figure 2 As shown, both the third bend 421 and the fourth bend 422 are oriented towards the side away from the first waterstop 410 and are inclined. The third bend 421 increases the connection area between the second waterstop 420 and the basement floor slab 100, allowing the second waterstop 420 to be better anchored into the interior of the basement floor slab 100, thus enhancing the anchoring effect. At the same time, the design of the third bend 421 ensures a tight connection between the basement floor slab 100 and the second waterstop 420, preventing gaps between them and improving the waterproofing effect. Similarly, the fourth bend 422 increases the connection area between the second waterstop 420 and the post-pouring strip 200, allowing the second waterstop 420 to be better anchored into the interior of the post-pouring strip 200, thus enhancing the anchoring effect. At the same time, the design of the fourth bend 422 ensures a tight connection between the post-pouring strip 200 and the second waterstop 420, preventing gaps between them and improving the waterproofing effect.

[0038] In one possible implementation, such as Figure 2 As shown, a first preset angle α is provided between the length direction of the first bend 411 and the length direction of the first waterstop 410. The design of the first preset angle α increases the length of the first waterstop 410 anchored into the basement floor slab 100, enhances the anchoring effect, extends the path of groundwater seepage, and improves the waterproofing effect.

[0039] Furthermore, the range of the first preset angle α is 90°-180°, and preferably, the value of the first preset angle α is 135°.

[0040] In one possible implementation, the first bend 411, the second bend 412, and the first waterstop 410 are integrally formed.

[0041] In one possible implementation, such as Figure 2 As shown, a second preset angle β is provided between the second bending portion 412 and the first waterstop plate 410, and the second preset angle β is the same as the first preset angle α.

[0042] It should be noted that the design of the second preset angle β increases the length of the first waterstop 410 anchored into the post-pouring strip 200, enhances the anchoring effect, extends the path of groundwater seepage, and improves the waterproofing effect. The design of the second preset angle β being the same as the first preset angle α makes the first waterstop 410 present a symmetrical structure at the first bend 411 and the second bend 412 at both ends, thereby enabling the first waterstop 410 to exert a more balanced waterproofing effect when blocking groundwater from seeping in from both ends; thus enhancing the waterproofing performance of the entire basement post-pouring strip 200 waterproofing structure.

[0043] In one possible implementation, the third bend 421, the fourth bend 422, and the second waterstop 420 are integrally formed.

[0044] In one possible implementation, the width of both the first waterstop plate 410 and the second waterstop plate 420 is 350mm.

[0045] In one possible implementation, such as Figure 1 , Figure 2 As shown, the surface of the positioning element 430 is perpendicular to the surface of the first waterstop plate 410, and the positioning element 430 is located in the middle of the first waterstop plate 410. It should be noted that the design of the positioning element 430 being located in the middle of the first waterstop plate 410 ensures that the two ends of the first waterstop plate 410 are anchored into the basement floor slab 100 and the post-pouring strip 200 with the same length, so that the first waterstop plate 410 and the second waterstop plate 420 can evenly cover the area that needs to be waterproofed, avoiding waterproofing gaps caused by installation deviations, such as one side lacking the double-layer waterstop steel plate 400 or the double-layer waterstop steel plate 400 being too short.

[0046] In one possible implementation, such as Figure 1 As shown, the basement floor slab 100 is provided with a first supporting rib 111 and a second supporting rib 112; the length direction of the first supporting rib 111 is parallel to the length direction of the second supporting rib 112. It should be noted that the parallel design of the first supporting rib 111 and the second supporting rib 112 effectively enhances the load-bearing capacity of the basement floor slab 100; when the basement floor slab 100 is subjected to load, the first supporting rib 111 and the second supporting rib 112 can share the load, thereby preventing the basement floor slab 100 from deforming or being damaged.

[0047] In one possible implementation, the first support bar 111 has two or more first transverse steel bars 121 on the side facing the second support bar 112; the two or more first transverse steel bars 121 are equidistant from each other along the length direction of the first support bar 111; the length directions of the two or more first transverse steel bars 121 are parallel to each other, and the two or more first transverse steel bars 121 are all fixedly connected to the first through support bar.

[0048] Furthermore, two or more second transverse steel bars 122 are provided on one side of the second support bar 112 facing the second support bar 112; the two or more transverse steel bars are equidistantly arranged along the length direction of the second support bar 112; the length directions of the two or more second transverse steel bars 122 are parallel to each other, and the two or more second transverse steel bars 122 are all fixedly connected to the second support bar 112.

[0049] Specifically, the first transverse steel bar 121 and the second transverse steel bar 122 are symmetrically arranged between the first support bar 111 and the second support bar 112. Since there are two or more sets of adjacent first support bars 111 and second support bars 112 in the basement floor slab 100, the first transverse steel bar 121 and the second transverse steel bar 122 are laid on the first support bar 111 (or the second support bar 112) along their length direction. The first support bar 111, the second support bar 112, the first transverse steel bar 121, and the second transverse steel bar 122 together form a stable grid-like steel frame. The basement floor slab 100 is fixedly set on the steel frame by casting. The grid-like steel frame can make the load on the basement floor slab 100 more evenly distributed in the entire structure, thereby making the stress on the entire basement floor slab 100 more uniform and improving the load-bearing capacity and durability of the basement floor slab 100.

[0050] In one possible implementation, such as Figure 1 As shown, a waterproof layer 310 is provided between the foundation layer 300 and the post-pouring strip 200. A groove is provided on the side of the foundation layer 300 facing the bottom edge of the basement. The waterproof layer 310 is laid in the groove of the foundation layer 300, forming an effective waterproof barrier to prevent groundwater from penetrating the foundation layer 300 and directly contacting the post-pouring strip 200. The waterproof layer 310 extends in a direction away from the post-pouring strip 200 to the space between the foundation layer 300 and the basement floor slab 100, preventing groundwater from directly seeping into the basement through the gap between the basement floor slab 100 and the post-pouring strip 200, thus enhancing the waterproof performance of the basement.

[0051] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A waterproof structure for post-cast strips in basements, characterized in that, include: Subbase, basement floor slab, and post-cast strip; The post-pouring strip is located between two adjacent basement floor slabs, the cushion layer is located below the basement floor slab and the post-pouring strip, and both sides of the post-pouring strip are connected to the basement floor slab by double-layer water-stop steel plates. The double-layer waterstop steel plate includes a first waterstop plate, a second waterstop plate, and a positioning component; the positioning component is disposed between the first waterstop plate and the second waterstop plate, the first waterstop plate and the second waterstop plate are fixedly connected by the positioning component, and the positioning component is located within the gap surface between the basement floor slab and the post-pouring strip. One end of the first waterstop is anchored into the basement floor slab and is provided with a first bend; the other end of the first waterstop is anchored into the post-pouring strip and is provided with a second bend. The surface of the second waterstop is parallel to the surface of the first waterstop. One end of the second waterstop is anchored into the basement floor slab and has a third bend. The other end of the second waterstop is anchored into the post-cast strip and has a fourth bend.

2. The waterproof structure for post-cast strips in basements according to claim 1, characterized in that, The surface of the positioning element is perpendicular to the surface of the first waterstop plate, and the positioning element is located in the middle of the first waterstop plate.

3. The waterproof structure for post-cast strips in basements according to claim 1, characterized in that, The width of both the first and second waterstop plates is 350mm.

4. The waterproof structure for post-cast strips in basements according to claim 1, characterized in that, A first preset angle α is provided between the length direction of the first bending part and the length direction of the first waterstop plate.

5. The waterproof structure for post-cast strips in basements according to claim 4, characterized in that, A second preset angle β is provided between the second bend and the first waterstop plate, and the second preset angle β is the same as the first preset angle α.

6. The waterproof structure for post-cast strips in basements according to claim 1, characterized in that, The basement floor slab is provided with a first support bar and a second support bar. The length direction of the first supporting rib is parallel to the length direction of the second supporting rib.

7. The waterproof structure for post-cast strips in basements according to claim 6, characterized in that, The first supporting bar has two or more first transverse reinforcing bars on the side facing the second supporting bar; Two or more of the first transverse reinforcing bars are equidistant from each other along the length of the first supporting bar.

8. The waterproof structure for post-cast strips in basements according to claim 6, characterized in that, The second supporting bar has two or more second transverse reinforcing bars on one side facing the second supporting bar; Two or more of the transverse reinforcing bars are equidistantly arranged along the length of the second supporting bar.

9. The waterproof structure for post-cast strips in basements according to claim 1, characterized in that, A waterproof layer is provided between the padding layer and the post-cast strip.

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