A pre-water-stopping structure for post-cast strips of basement floor and its construction method

Abstract

The present application relates to the technical field of waterproofing of post-cast strips of basement floors, and discloses an advance pre-water-stopping structure for post-cast strips of basement floors and a construction method thereof. The advance pre-water-stopping structure for post-cast strips of basement floors comprises: a lower retaining net provided with two rows; a water-stopping steel plate installed above the lower retaining net; a lower support bar fixedly installed on the upper edge of the lower retaining net, with the water-stopping steel plate and the lower support bar fitting together; a guide assembly installed on the lower retaining net for guiding the water-stopping steel plate to slide horizontally on the lower support bar along its own width direction; an upper retaining net installed above the water-stopping steel plate; an upper support bar fixedly installed on the lower edge of the upper retaining net, and when the water-stopping steel plate is reset, the upper support bar is fixedly connected to the upper surface of the water-stopping steel plate. The present application can make the concrete at the angle between the water-stopping steel plate and the lower retaining net vibrated more fully, effectively reduce the hidden danger of water seepage, and improve the waterproofing performance of the post-cast strip.

Description

Technical Field

[0001] The present application relates to the technical field of waterproofing of a post-cast strip of a basement floor, and in particular to an advance pre-waterstop structure of a post-cast strip of a basement floor and a construction method thereof. Background Art

[0002] With the acceleration of urbanization, the development and utilization of underground space is becoming increasingly widespread. As a key component in underground projects, the waterproofing performance of post-cast strips directly impacts the quality and service life of the entire project. Waterstop steel plates serve as the primary waterstop component in post-cast strips, and their edges are curved. The principle behind the waterstop steel plates is that the joints between new and old concrete are a weak link in concrete waterproofing. After adding the waterstop steel plates, water that penetrates along the gap between the new and old concrete joints is unable to penetrate further when it encounters the waterstop steel plates. The waterstop steel plates act to cut off the water's infiltration path. Even if water penetrates along the gap between the waterstop steel plate and the concrete, the water's width extends the water's infiltration path.

[0003] As long as the width of the waterstop plate meets the requirements, the water penetration path is the same whether the notch of the waterstop plate is facing up or down. However, if the notch of the waterstop plate is facing down, the concrete will easily accumulate water or bubbles at the bend, making it difficult to vibrate and compact. Therefore, aligning the notch of the waterstop plate with the direction of concrete feed and vibration can improve the degree of vibration and compaction.

[0004] Regarding the relevant technologies mentioned above, it was found that the length of the post-cast strip was relatively long. When large-area concrete was poured on both sides of the post-cast strip, half of the water-stop steel plate extended out of the post-cast strip in the width direction. When vibrating the concrete, due to the obstruction of part of the post-cast strip, the vibrating equipment was generally straight up and down. The concrete at the angle between the post-cast strip and the dense-pore steel mesh was not easy to vibrate completely, and there was a great risk of water seepage. Summary of the Invention

[0005] In order to improve the waterproof effect of the basement, the present application provides an advance pre-water-stopping structure of the post-cast strip of the basement floor and a construction method thereof.

[0006] In the first aspect, the present application provides a pre-waterstop structure for a post-cast strip of a basement floor, which adopts the following technical solution:

[0007] A pre-water-stopping structure for a post-cast strip of a basement floor, comprising:

[0008] The lower retaining net is provided in two rows, and the distance between the two rows of the lower retaining net forms the width of the post-casting strip;

[0009] A water-stop steel plate is installed above the lower retaining net, with two edges of the water-stop steel plate bent and a notch facing upwards;

[0010] The lower support bar is fixedly installed on the upper edge of the lower retaining net, and the water stop steel plate is in contact with the lower support bar;

[0011] A guide assembly is installed on the lower retaining net and is used to guide the water-stop steel plate to slide horizontally on the lower support bar along its own width direction;

[0012] An upper retaining net is installed above the water-stop steel plate;

[0013] The upper support bar is fixedly installed on the lower edge of the upper baffle. When the waterstop steel plate is reset, the upper support bar and the upper surface of the waterstop steel plate are fixedly connected.

[0014] By adopting the above technical solution, the spacing between the two lower retaining nets forms the width of the post-casting strip, and the combination of the lower retaining net, the water-stop steel plate and the upper retaining net forms the height of the post-casting strip. The water-stop steel plate is used to cut off the water infiltration path of the gap between the new and old concrete joints. During construction, the lower retaining net, the lower support bar and the guide assembly are installed first. The design of the lower support bar and the guide assembly enables, when pouring concrete on both sides of the post-casting strip, when the concrete height does not exceed the height of the lower retaining net, the guide assembly can guide the water-stop steel plate along the lower support bar toward the post-casting strip, making it convenient for the vibrating equipment to vibrate the concrete near the lower retaining net, avoiding incomplete vibration due to the obstruction of the water-stop steel plate; when the concrete is about to be higher than the height of the lower retaining net, the water-stop steel plate is guided to move horizontally back to its original position, so that the concrete at the angle between the water-stop steel plate and the lower retaining net is vibrated more fully, effectively reducing the hidden dangers of water seepage and improving the waterproof performance of the post-casting strip.

[0015] Optionally, it further includes a positioning block fixedly installed on the lower surface of the waterstop steel plate. When the positioning block is in contact with the lower support bar or the lower retaining net, at least half of the waterstop steel plate along the width direction is located in the post-casting zone.

[0016] By adopting the above technical solution and adding a positioning block, when the positioning block is in contact with the lower support bar, at least half of the waterstop steel plate along the width direction is located in the post-cast strip. This design clarifies the position of the waterstop steel plate in the post-cast strip, ensuring that the waterstop steel plate can accurately play its water-stopping role, making the waterproofing effect of the post-cast strip more stable and reliable.

[0017] Optionally, the guide assembly includes a guide rod and a guide block, the guide block is installed on the lower baffle, one end of the guide rod is connected to the positioning block, the other end of the guide rod passes through the guide block, and the end of the guide rod away from the positioning block is fixedly connected to the limiting part.

[0018] By adopting the above technical solution and adding a positioning block, when the positioning block is in contact with the lower support bar, half of the waterstop steel plate along the width direction is located in the post-cast strip. This design clarifies the position of the waterstop steel plate in the post-cast strip, ensuring that the waterstop steel plate can accurately play its water-stopping role, making the waterproofing effect of the post-cast strip more stable and reliable.

[0019] Optionally, a horizontal rod is installed on the positioning block, the guide rod and the horizontal rod are rotatably connected, the length of the horizontal rod is shorter than the length of the guide rod, and the guide block is provided with a movable groove for the guide rod to rotate.

[0020] By adopting the above technical solution, when the waterstop steel plate starts to slide, the horizontal rod and the guide block contact, and the waterstop steel plate slides smoothly. When the waterstop steel plate is reset, the guide rod that rotates with the horizontal rod moves along with the movement of the waterstop steel plate. The horizontal position and height position of the guide rod will change, which can increase the mixing effect of the concrete. In addition, the guide rod rotates in the movable groove, and there is a distance between the guide rod and the movable groove. Although a small amount of concrete enters the post-casting strip through the movable groove, the guide rod keeps moving, and then the horizontal rod seals the movable groove. A small amount of concrete flows into the post-casting strip and solidifies on the lower retaining net. When concrete is poured in the post-casting strip, the new concrete wraps a small amount of old concrete. The presence of the old concrete makes the junction of the new and old concrete uneven, which can also prolong the seepage effect.

[0021] Optionally, the notch of the movable groove away from the post-cast strip is larger than the notch toward the post-cast strip, the horizontal rod wall and the inner wall of the notch of the movable groove toward the post-cast strip form a fitting relationship, and when the bent portion of the waterstop steel plate contacts the upper support bar, the limiting portion blocks the notch of the movable groove away from the post-cast strip.

[0022] By adopting this technical solution, when the bent portion of the waterstop steel plate contacts the upper support bar, the limiter blocks the movable groove from moving away from the notch of the post-cast strip, restricting the waterstop steel plate from further movement. It also provides support for the waterstop steel plate extending into the post-cast strip, keeping the waterstop steel plate horizontal and ensuring its stable position within the post-cast strip. When the waterstop steel plate returns to its original position, the horizontal bar seals the movable groove, preventing concrete from entering the movable groove and continuing to flow into the post-cast strip.

[0023] Optionally, the limiting portion is a spherical structure.

[0024] By adopting the above technical solution, when the waterstop steel plate moves and blocks the movable groove, the contact with the surrounding structure is smoother, reducing stress concentration.

[0025] Optionally, the limiting portion is connected to a push rod, the push rod is vertically arranged, and a plurality of push rods are arranged at intervals.

[0026] By adopting the above technical solution, during the resetting process of the waterstop steel plate, the push rod can further enhance the mixing effect of the concrete as the guide rod moves, making the concrete more uniform and dense, and improving the quality and waterproof performance of the post-cast strip.

[0027] Optionally, a first guide rail is installed on the lower baffle, and the first guide rail is bent and progressively along the length direction of the lower baffle. A second guide rail is installed on the lower surface of the waterstop steel plate, and the extension direction and extension path of the second guide rail are the same as those of the first guide rail. The first guide rail and the second guide rail are arranged parallel to each other, and the guide assembly is arranged at intervals along the extension direction of the first guide rail. The positioning block is installed on the second guide rail, and the positioning block and the guide assembly correspond one to one, and the guide rod is connected to the corresponding positioning block.

[0028] By adopting the above technical solution, the setting of the first guide rail and the second guide rail enables the guide assembly to be distributed in a winding and progressive manner along the lower retaining net, and multiple guide rods are arranged at intervals and at different heights along the length direction of the lower retaining net. On the one hand, it can increase the mixing effect of concrete and make the concrete denser; on the other hand, when the concrete solidifies, the guide rods are located in the concrete and have the same effect as steel bars, reinforcing the concrete and improving the overall strength and stability of the post-cast strip. In addition, when the water-stop steel plate is basically located in the post-cast strip, multiple guide rods can provide stable support for the extra-long water-stop steel plate.

[0029] In a second aspect, the present application provides a construction method for a pre-waterstop structure of a post-cast strip of a basement floor, which adopts the following technical solution:

[0030] A construction method for a pre-cast water-stopping structure of a basement floor, wherein the construction is carried out according to the pre-cast water-stopping structure of a basement floor.

[0031] S1. Prepare materials. The lower retaining net and the first guide rail are prefabricated. The guide block is sequentially installed on the first guide rail, and the positioning block is sequentially installed on the second guide rail. The positioning block and the horizontal rod are integrally formed. The positioning block, the second guide rail, and the water stop steel plate are fixedly connected.

[0032] S2. Determine the position and size of the post-casting strip according to the design requirements, install the two lower retaining nets in parallel and at intervals, the spacing between the two lower retaining nets forming the width of the post-casting strip, and the spacing between the upper retaining net and the lower retaining net forming the depth of the post-casting strip;

[0033] S3. Fix the lower support bar on the edge of the lower retaining net near the installation position of the water-stop steel plate;

[0034] S4. Place the water-stop steel plate on the support bar. One end of the guide rod passes through the guide block and is then rotated and connected to the horizontal rod of the positioning block.

[0035] S5. Pour concrete on both sides of the post-casting strip and vibrate the concrete in multiple layers. When the concrete pouring height is lower than the height of the lower retaining net, the water-stop steel plate slides into the post-casting strip. When the concrete pouring height is higher than the height of the lower retaining net, the water-stop steel plate is reset.

[0036] S6. Fix the upper support bar and upper retaining net on the waterstop steel plate, weld the upper support bar and the surface of the waterstop steel plate, and continue pouring concrete;

[0037] S7. Casting of post-casting joints.

[0038] By adopting the above-mentioned technical solution, when pouring concrete on both sides of the post-cast strip, the presence of the water-stop steel plate in the traditional structure may block part of the concrete, resulting in the inability of the vibrating equipment to fully vibrate the concrete near the lower retaining net, thereby forming a hidden danger of water seepage. In this technical solution, when the concrete pouring height is lower than the height of the lower retaining net, the water-stop steel plate slides toward the post-cast strip under the guidance of the guide assembly, so that the vibrating equipment can vibrate the concrete near the lower retaining net more directly and effectively. When the concrete is about to be higher than the height of the lower retaining net, the water-stop steel plate is reset, ensuring that the concrete at the angle between the water-stop steel plate and the lower retaining net can also be fully vibrated, significantly improving the vibration density of the concrete, reducing the hidden danger of water seepage caused by incomplete vibration, and thus improving the waterproof performance of the post-cast strip;

[0039] During the sliding reset of the waterstop plate, the guide rod, which rotates with the horizontal rod, moves with the plate, changing both its horizontal and vertical position. Furthermore, multiple guide rods are spaced at varying heights along the length of the lower retaining net. These features enhance the mixing effect of the concrete, resulting in a more uniform and dense concrete, reducing voids and air bubbles within the concrete, thereby improving its quality and strength. This is crucial for enhancing the overall stability and durability of the post-cast strip.

[0040] In summary, this application has at least one of the following beneficial effects:

[0041] 1. When the concrete pouring height is lower than the height of the lower retaining net, the waterstop steel plate can slide toward the post-casting strip, thereby exposing the concrete near the lower retaining net, making it easier for the vibrating equipment to fully vibrate and improve the waterproof performance of the post-casting strip;

[0042] 2. During the sliding and resetting process of the waterstop steel plate, the guide rod moves along with the movement of the waterstop steel plate, and its horizontal and height positions will change, thereby increasing the mixing effect of the concrete; when the concrete solidifies, the guide rod is located in the concrete, playing a reinforcement role similar to that of steel bars; in addition, the setting of the first guide rail and the second guide rail enables the guide assembly to be distributed in a winding and progressive manner along the lower retaining net, further enhancing the reinforcement effect and enhancing the overall strength and stability of the post-cast strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a cross-sectional view of the overall structure of the post-cast zone advance pre-water-stopping structure according to an embodiment of the present application;

[0044] Figure 2 This is a schematic diagram of the overall structure of the lower retaining net and the water-stop steel plate in the embodiment of the present application;

[0045] Figure 3 yes Figure 1 A magnified schematic diagram of point A;

[0046] Figure 4 This is a schematic diagram of an embodiment of the present application showing that the limiting portion blocks the movable groove when pouring on both sides of the post-casting strip;

[0047] Figure 5 This is a schematic diagram of the waterstop steel plate reset process according to an embodiment of the present application;

[0048] Figure 6 is a schematic diagram of a first guide rail and a second guide rail according to an embodiment of the present application;

[0049] Figure 7 yes Figure 6 A magnified schematic diagram of point B;

[0050] Figure 8 It is a flow chart of the construction method of the post-cast strip advance water-stopping structure according to an embodiment of the present application.

[0051] Explanation of the accompanying reference numerals: 10, lower retaining net; 20, water-stop steel plate; 21, positioning block; 22, horizontal rod; 30, upper retaining net; 40, lower support bar; 41, support rod; 50, guide assembly; 51, guide rod; 52, guide block; 53, limiting portion; 54, movable groove; 60, upper support bar; 70, first guide rail; 80, second guide rail; 90, cross bar; 91, push rod; 100, post-casting strip. DETAILED DESCRIPTION

[0052] The following is combined with Figure 1 -Attached Figure 8 This application is described in further detail.

[0053] In a first aspect, an embodiment of the present application discloses an advance pre-water-stopping structure for a post-cast strip of a basement floor.

[0054] Reference Figure 1, a pre-water-stopping structure for the post-cast strip of the basement floor mainly includes a lower retaining net 10, a water-stopping steel plate 20, an upper retaining net 30, a guide assembly 50 and other parts. The upper retaining net 30 and the lower retaining net 10 are dense-pore steel wire meshes, and the dense pores of the lower retaining net 10 and the upper retaining net 30 in the accompanying drawings are not shown. The lower retaining net 10 is provided in two rows, and the two rows of lower retaining nets 10 are installed in parallel and at intervals. The spacing between them accurately forms the width of the post-cast strip 100, providing a clear boundary for subsequent construction. The upper retaining net 30 is arranged corresponding to the lower retaining net 10 and is installed above the water-stopping steel plate 20. The upper retaining net 30, the lower retaining net 10 and the water-stopping steel plate 20 together constitute the height of the post-cast strip 100. The water-stop steel plate 20 is installed between the upper retaining net 30 and the lower retaining net 10. The two edges of the water-stop steel plate 20 are bent and the notches are set upward. This design is conducive to cutting off the water infiltration path in the gap between the new and old concrete joints. The upward inclination of the bent part can also better prevent the accumulation of moisture or bubbles in the concrete at the bend.

[0055] Specifically, refer to Figure 2 A lower support bar 40 is fixedly mounted on the upper edge of the lower retaining net 10 near the upper edge of the waterstop steel plate 20. The lower support bar 40 extends along the length of the lower retaining net 10. Support rods 41 are fixedly connected to both ends of the lower support bar 40 in the longitudinal direction. The waterstop steel plate 20 is slidably mounted on the lower support bar 40 in the horizontal direction, providing a foundation for the subsequent movement of the waterstop steel plate 20.

[0056] Reference Figure 3 When pouring concrete on both sides of the post-cast strip 100, when the concrete height is higher than the water-stop steel plate 20, the upper support bar 60 is welded to the lower edge of the upper retaining net 30, and the upper support bar 60 is welded to the upper surface of the water-stop steel plate 20.

[0057] Reference Figure 3 A positioning block 21 is installed below the waterstop steel plate 20. When the positioning block 21 contacts the lower support bar 40 or the lower retaining net 10 during sliding, half of the width of the waterstop steel plate 20 is located within the post-cast strip 100, ensuring that the waterstop steel plate 20 can accurately perform its water-stopping function. The design of the positioning block 21 clearly defines the position of the waterstop steel plate 20 within the post-cast strip 100.

[0058] Reference Figure 3 and Figure 4The guide assembly 50 is installed between the lower retaining net 10 and the water-stopping steel plate 20, and is used to guide the water-stopping steel plate 20 to move horizontally along the lower support bar 40. The guide assembly 50 specifically includes a guide rod 51 and a guide block 52. The guide block 52 is installed on the lower retaining net 10. One end of the guide rod 51 is connected to the positioning block 21 fixedly installed on the lower surface of the water-stopping steel plate 20, and the other end passes through the guide block 52. The end away from the positioning block 21 is fixedly connected to the limiting portion 53. The positioning block 21 is fixedly connected to the side facing the lower retaining net 10 with a horizontal rod 22. The guide rod 51 and the horizontal rod 22 are connected for vertical rotation.

[0059] Reference Figure 4 When pouring concrete on both sides of the post-casting strip 100, if the concrete height does not exceed the height of the lower retaining net 10, the guide assembly 50 will guide the water-stop steel plate 20 to move along the lower support bar 40 toward the post-casting strip 100, making it easier for the vibrating equipment to vibrate the concrete near the lower retaining net 10, avoiding the problem of incomplete vibration caused by the water-stop steel plate 20 blocking the concrete. When the concrete is about to exceed the height of the lower retaining net 10, the guide assembly 50 will guide the water-stop steel plate 20 to move horizontally back to its original position, so that the concrete at the angle between the water-stop steel plate 20 and the lower retaining net 10 can be vibrated more fully, effectively reducing the risk of water seepage.

[0060] Reference Figure 4 and Figure 5 The horizontal rod 22 is shorter than the guide rod 51, and the guide block 52 is further provided with a movable groove 54 for the rotation of the guide rod 51. When the waterstop steel plate 20 slides back to its original position, the guide rod 51, which rotates with the horizontal rod 22, moves along with the movement of the waterstop steel plate 20, and its horizontal and height positions change, thereby enhancing the mixing effect of the concrete.

[0061] The opening of the movable groove 54 facing away from the post-cast strip 100 is larger than the opening facing the post-cast strip 100. The wall of the horizontal rod 22 forms a fitting relationship with the inner wall of the opening of the movable groove 54 facing the post-cast strip 100. When the bent portion of the waterstop steel plate 20 contacts the upper support bar 60, the stopper 53 (a spherical structure in this embodiment) blocks the opening of the movable groove 54 facing away from the post-cast strip 100, restricting further movement of the waterstop steel plate 20 and providing support for the waterstop steel plate 20 extending into the post-cast strip 100, maintaining a horizontal position. When the waterstop steel plate 20 returns to its original position, the horizontal rod 22 re-blocks the movable groove 54, preventing concrete from entering the movable groove 54 and continuing to flow into the post-cast strip 100.

[0062] Reference Figure 5During the sliding return of the water-stop steel plate 20, a gap is left between the guide rod 51 and the movable groove 54, allowing a small amount of concrete to flow out of the movable groove 54 and into the lower retaining net 10 of the post-casting strip 100. When concrete is poured into the post-casting strip 100, the new concrete wraps around a small amount of old concrete. The presence of the old concrete makes the junction between the new and old concrete uneven, which also helps to prolong the water seepage effect.

[0063] Reference Figure 6 A first guide rail 70 is mounted on the lower retaining net 10 and is bent and progressively extended along the length of the lower retaining net 10. A second guide rail 80 is mounted on the lower surface of the waterstop steel plate 20. The second guide rail 80 extends in the same direction and along the same path as the first guide rail 70. The first and second guide rails 70 and 80 are arranged parallel to each other. The guide assemblies 50 are arranged at intervals along the extension direction of the first guide rail 70. The positioning blocks 21 are mounted on the second guide rail 80 and correspond one-to-one with the guide assemblies 50. The guide rods 51 are connected to the corresponding positioning blocks 21. Such a design enables the guide assembly 50 to be distributed in a winding and progressive manner along the lower retaining net 10. Multiple guide rods 51 are arranged at intervals and at different heights along the length direction of the lower retaining net 10. On the one hand, it increases the mixing effect of the concrete and makes the concrete denser; on the other hand, when the concrete solidifies, the guide rods 51 are located in the concrete, playing the same effect as steel bars, reinforcing the concrete and improving the overall strength and stability of the post-cast strip 100. Moreover, when the water-stop steel plate 20 is basically located in the post-cast strip 100, the multiple guide rods 51 can provide stable support for the water-stop steel plate 20.

[0064] Reference Figure 7 Furthermore, the portion of the stopper 53 away from the post-cast strip 100 is connected to a crossbar 90, on which are mounted vertical push rods 91, multiple push rods 91 being spaced apart. During the reset of the waterstop steel plate 20, the push rods 91, along with the movement of the guide rods 51, further enhance the mixing effect of the concrete, making the concrete more uniform and dense, and improving the quality and waterproof performance of the post-cast strip 100.

[0065] The implementation principle of the advanced pre-water-stopping structure of the post-cast strip of the basement floor in the embodiment of the present application is as follows:

[0066] When pouring concrete on both sides of the post-casting strip 100, when the concrete pouring height is lower than the height of the lower retaining net 10, the guide assembly 50 on the lower retaining net 10 guides the water-stop steel plate 20 to slide horizontally along the lower support bar 40 toward the post-casting strip 100, and plays a stable supporting role for the water-stop steel plate 20 in the post-casting strip 100, so that the concrete near the lower retaining net 10 is exposed, which is convenient for the vibrating equipment to fully vibrate and avoid incomplete vibration caused by the obstruction of the water-stop steel plate 20; when the concrete is about to be higher than the height of the lower retaining net 10, the whole row of water-stop steel plates 20 are pushed to move horizontally and reset, and the guide assembly 50 guides the water-stop steel plates 20 to move horizontally back to their original position to ensure that the concrete is not blocked. The concrete at the angle between the water-stop steel plate 20 and the lower retaining net 10 is fully vibrated to reduce the hidden danger of water seepage; during the sliding and resetting process of the water-stop steel plate 20, the guide rod 51 that rotates with the horizontal rod 22 moves along with it, and the horizontal and height positions change, thereby enhancing the mixing effect of the concrete. In addition, multiple guide rods 51 spaced apart and at different heights along the length direction of the lower retaining net 10 play a reinforcing role similar to that of steel bars when the concrete solidifies, thereby improving the overall strength and stability of the post-cast strip 100. At the same time, a small amount of concrete enters the lower retaining net 10 of the post-cast strip 100 through the movable groove 54, and the new concrete wraps the old concrete, making the junction uneven and extending the water seepage path.

[0067] In a second aspect, an embodiment of the present application discloses a construction method for a pre-water-stopping structure of a post-cast strip of a basement floor.

[0068] A construction method for an advanced pre-water-stopping structure of a post-cast strip of a basement floor is disclosed. The method is based on the advanced pre-water-stopping structure in the first embodiment, ensuring construction quality and waterproofing effect.

[0069] Reference Figure 8 A construction method for a pre-cast water-stop structure of a basement floor comprises the following construction steps:

[0070] S1. Prepare materials. The lower retaining net 10 and first guide rail 70 are prefabricated components. The lower retaining net 10 is positioned along the first guide rail 70 to ensure component precision and quality. The guide blocks 52 are sequentially installed on the first guide rail 70, and the positioning blocks 21 are sequentially installed on the second guide rail 80. The positioning blocks 21 and horizontal rods 22 are integrally formed. The positioning blocks 21, second guide rail 80, and waterstop steel plate 20 are fixedly connected, fully preparing for subsequent construction.

[0071] S2. Determine the position and size of the post-casting strip 100 according to the design requirements. Install the two rows of lower retaining nets 10 in parallel and at intervals, ensuring that the spacing between the two lower retaining nets 10 accurately forms the width of the post-casting strip 100. After the lower retaining nets 10 and the upper retaining nets 30 are installed, the depth of the post-casting strip 100 is determined.

[0072] S3, on the edge of the lower retaining net 10 near the installation position of the water-stop steel plate 20, fix the lower support bar 40. The installation position of the lower support bar 40 should be accurate to ensure that the water-stop steel plate 20 can slide along its horizontal direction.

[0073] S4. Place the waterstop steel plate 20 on the support bar. One end of the guide rod 51 passes through the guide block 52 and is rotatably connected to the horizontal rod 22 of the positioning block 21 to ensure that the guide assembly 50 can work properly and guide the waterstop steel plate 20 to move horizontally along the lower support bar 40.

[0074] S5. Pour concrete on both sides of the post-cast strip 100. Perform multi-layer vibration on the concrete to ensure the density of the concrete. When the concrete pouring height is lower than the height of the lower retaining net 10, the water-stop steel plate 20 slides into the post-cast strip 100 under the guidance of the guide assembly 50, making it convenient for the vibrating equipment to vibrate the concrete near the lower retaining net 10. When the concrete pouring height is about to exceed the height of the lower retaining net 10, the water-stop steel plate 20 is reset under the guidance of the guide assembly 50, so that the concrete at the angle between the water-stop steel plate 20 and the lower retaining net 10 can be vibrated more fully.

[0075] S6. Securely install the upper support bar 60 and upper retaining net 30 on the waterstop steel plate 20. Weld the upper support bar 60 and the surface of the waterstop steel plate 20 firmly together to ensure that the upper retaining net 30, lower retaining net 10, and waterstop steel plate 20 together form the height of the post-casting strip 100. Continue pouring concrete until the design height is reached.

[0076] S7. Casting of post-cast strip 100. After the concrete on both sides of post-cast strip 100 is completely dry, concrete is poured inside post-cast strip 100 to ensure the concrete's density and strength. During the pouring process, attention should be paid to vibrating and curing the concrete to ensure the waterproof performance and overall stability of post-cast strip 100.

[0077] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A pre-water-stopping structure for the post-cast strip of a basement floor, characterized in that: include: The lower retaining net (10) is provided with two rows, and the spacing between the two rows of the lower retaining nets (10) forms the width of the post-casting strip (100); the water-stopping steel plate (20) is installed above the lower retaining net (10), the two edges of the water-stopping steel plate (20) are bent, and the notch of the water-stopping steel plate (20) is set upward; the lower support bar (40) is fixedly installed on the upper edge of the lower retaining net (10), and the water-stopping steel plate (20) and the lower support bar (40) are in contact; the guide assembly (50) is installed on the lower retaining net (10) and is used to guide the water-stopping steel plate (20) to slide horizontally on the lower support bar (40) along its own width direction; the upper retaining net (30) is installed above the water-stopping steel plate (20); The upper support bar (60) is fixedly mounted on the lower edge of the upper retaining net (30). When the water-stopping steel plate (20) is reset, the upper support bar (60) is fixedly connected to the upper surface of the water-stopping steel plate (20).

2. The pre-water-stopping structure for the post-cast strip of the basement floor according to claim 1 is characterized in that: It also includes a positioning block (21) fixedly mounted on the lower surface of the waterstop steel plate (20), and when the positioning block (21) contacts the lower support bar (40) or the lower retaining net (10), at least half of the waterstop steel plate (20) along the width direction is located within the post-casting strip (100).

3. The pre-water-stopping structure for the post-cast strip of the basement floor according to claim 2 is characterized in that: The guide assembly (50) comprises a guide rod (51) and a guide block (52). The guide block (52) is mounted on the lower baffle (10). One end of the guide rod (51) is connected to the positioning block (21). The other end of the guide rod (51) passes through the guide block (52). One end of the guide rod (51) away from the positioning block (21) is fixedly connected to a limiting portion (53).

4. The pre-water-stopping structure for the post-cast strip of the basement floor according to claim 3 is characterized in that: A horizontal rod (22) is mounted on the positioning block (21), the guide rod (51) and the horizontal rod (22) are rotatably connected, the length of the horizontal rod (22) is shorter than the length of the guide rod (51), and the guide block (52) is provided with a movable groove (54) for the guide rod (51) to rotate.

5. The pre-water-stopping structure for the post-cast strip of the basement floor according to claim 4 is characterized in that: The notch of the movable groove (54) away from the post-cast strip (100) is larger than the notch toward the post-cast strip (100), and the rod wall of the horizontal rod (22) and the inner wall of the notch of the movable groove (54) toward the post-cast strip (100) form a fitting relationship. When the bent portion of the water-stop steel plate (20) contacts the upper support bar (60), the limiting portion (53) blocks the notch of the movable groove (54) away from the post-cast strip (100).

6. The pre-water-stopping structure for the post-cast strip of the basement floor according to claim 5 is characterized in that: The limiting portion (53) is a spherical structure.

7. The pre-water-stopping structure for the post-cast strip of the basement floor according to claim 6 is characterized in that: The limiting portion (53) is connected to a push rod (91), the push rod (91) is vertically arranged, and a plurality of push rods (91) are arranged at intervals.

8. The pre-water-stopping structure for the post-cast strip of the basement floor according to claim 4 is characterized in that: A first guide rail (70) is installed on the lower baffle (10), and the first guide rail (70) is bent and progressively extended along the length direction of the lower baffle (10). A second guide rail (80) is installed on the lower surface of the water-stop steel plate (20), and the extension direction and extension path of the second guide rail (80) are the same as those of the first guide rail (70). The first guide rail (70) and the second guide rail (80) are arranged parallel to each other, and the guide assembly (50) is arranged at intervals along the extension direction of the first guide rail (70). The positioning block (21) is installed on the second guide rail (80), and the positioning block (21) and the guide assembly (50) correspond one to one. The guide rod (51) is connected to the corresponding positioning block (21).

9. A construction method for a pre-waterstop structure of a post-cast strip of a basement floor, characterized in that: According to claim 8, a pre-waterstop structure for a post-cast strip of a basement floor is constructed. S1, prepare materials, the lower retaining net (10) and the first guide rail (70) are prefabricated, the guide block (52) is sequentially installed on the first guide rail (70), the positioning block (21) is sequentially installed on the second guide rail (80), the positioning block (21) and the horizontal rod (22) are integrally formed, and the positioning block (21), the second guide rail (80) and the waterstop steel plate (20) are fixedly connected; S2. Determine the position and size of the post-casting strip (100) according to the design requirements, install the two lower retaining nets (10) in parallel and at intervals, the spacing between the two lower retaining nets (10) forms the width of the post-casting strip (100), and the depth of the post-casting strip (100) is formed between the upper retaining net (30) and the lower retaining net (10); S3. Fix the lower support bar (40) on the edge of the lower retaining net (10) near the installation position of the water-stop steel plate (20); S4. Place the water-stop steel plate (20) on the support bar, and one end of the guide rod (51) passes through the guide block (52) and is rotatably connected to the horizontal rod (22) of the positioning block (21); S5. Concrete is poured on both sides of the post-casting strip (100) and the concrete is vibrated in multiple layers. When the concrete pouring height is lower than the height of the lower retaining net (10), the water-stop steel plate (20) slides into the post-casting strip (100). Before the concrete pouring height is higher than the height of the lower retaining net (10), the water-stop steel plate (20) is reset. S6. The upper support bar (60) and the upper retaining net (30) are fixedly installed on the water-stop steel plate (20), and the upper support bar (60) and the water-stop steel plate (20) are welded to the surface, and the concrete pouring continues. S7. The post-casting strip (100) is poured.

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