Pre-plugging structure of post-cast strip
By introducing a combination of cover plate layer, elastic sealing layer, waterproof layer and mortar layer into the post-cast strip pre-sealing structure, combined with reinforced concrete and grouting pipes, the problem of poor waterproof performance of the pre-sealing structure is solved, and a more efficient waterproof effect and construction quality are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-03-20
AI Technical Summary
The existing pre-sealed structure has poor waterproofing performance, which causes rainwater to seep into the post-pouring strip, affecting construction quality and safety.
The system employs a combination of a cover plate layer, an elastic sealing layer, a first waterproof layer, a second waterproof layer, and a second mortar layer, combined with a reinforced concrete structure and grouting pipes, to form a multi-layer waterproof system that enhances the waterproofing effect.
It significantly improves the waterproof performance of the pre-sealed structure, prevents rainwater from seeping in, and improves construction quality and efficiency, especially providing better protection during the backfilling of the basement roof.
Smart Images
Figure CN224016382U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of post-pouring belt construction, in particular to the pre-plugging structure of post-pouring belt. BACKGROUND
[0002] In the high-rise building structure design, to solve the settlement difference problem, settlement post-pouring belt is usually arranged between the main building and the skirt building. According to the design specification requirement, settlement post-pouring belt needs to be poured after the main structure is completed and settlement is uniform, which seriously affects the waterproof and backfill construction, in addition to the security and quality hidden danger, cannot provide the site condition needed for masonry decoration and equipment installation in time, especially in the narrow site construction site, the contradiction is more prominent.
[0003] Through pre-plugging of the post-pouring belt, post-pouring belt pouring space is formed, and after subsequent pouring of the post-pouring belt, an integrated post-pouring belt structure is formed with the concrete, which solves the above technical problems. However, it is found in practice that the pre-plugging structure does not have good waterproof performance, which can easily cause rainwater to flow into the post-pouring belt, and the rainwater cannot be drained out during pouring of the post-pouring belt, which not only causes cracks and other defects in the post-pouring belt pouring structure, but also has a very adverse effect on the main construction quality. SUMMARY
[0004] The main purpose of the utility model is to provide a pre-plugging structure for post-pouring belt to solve the technical problem of poor waterproof performance of the pre-plugging structure in the prior art.
[0005] In order to achieve the above purpose, the utility model provides a pre-plugging structure for post-pouring belt, and the technical scheme is as follows:
[0006] The pre-plugging structure for post-pouring belt comprises: a cover plate layer having a reinforced concrete structure; the width of the cover plate layer is greater than the width of the post-pouring belt; the cover plate layer comprises prefabricated cover plates connected head to tail along the direction of the post-pouring belt; an elastic sealing layer is located on both sides of the post-pouring belt and is clamped between the bottom surface of the cover plate layer and the bottom surface of the poured concrete; a first waterproof layer is arranged on the upper surface of the cover plate layer; a first mortar layer is arranged on the upper surface of the first waterproof layer; a second waterproof layer is arranged on the upper surface of the first mortar layer; and a second mortar layer is wrapped on the upper surface of the second waterproof layer and the side of the pre-plugging structure.
[0007] In the pre-plugging structure for post-pouring belt described above, the cooperation of the elastic sealing layer, the first waterproof layer and the second waterproof layer can significantly improve the waterproof effect of the pre-plugging structure and effectively prevent rainwater from seeping into the post-pouring belt. The structure of each structure layer is simple and the construction is simple, and the construction efficiency of the pre-plugging structure is high.
[0008] As a further improvement of the pre-blocking structure of the post-pouring belt: the elastic sealing layer is an rubber-plastic sponge layer, and the thickness is 0.5-2 cm. The gap between the bottom surface of the cover plate layer and the bottom surface of the poured concrete is the main channel for rainwater to enter the post-pouring belt. The deformation of the elastic sealing layer can fill the uneven surface between the bottom surface of the cover plate layer and the bottom surface of the poured concrete, thereby significantly improving the waterproof effect.
[0009] As a further improvement of the pre-blocking structure of the post-pouring belt: the reinforced concrete structure includes a steel mesh; the first waterproof layer includes a steel plate connected at the head and tail along the direction of the post-pouring belt, and the steel plate is connected with a hook head bolt embedded and fixed on the steel mesh. In this way, the steel plate can be used as a water stop plate on one hand, and on the other hand, through its connection with the hook head bolt on the steel mesh, not only is it convenient, but also the strength of the pre-blocking structure can be significantly improved.
[0010] As a further improvement of the pre-blocking structure of the post-pouring belt: the steel plate is arranged in a staggered manner with the prefabricated cover plate. In this way, rainwater can be effectively prevented from entering from the joint of the prefabricated cover plate.
[0011] As a further improvement of the pre-blocking structure of the post-pouring belt: it further includes a grouting pipe penetrating through the pre-blocking structure, and the arrangement interval of the grouting pipe along the direction of the post-pouring belt is 3 m; the steel plate located at the grouting pipe has a circular arc-shaped notch matched with the shape of the grouting pipe. It is preferred that one grouting pipe is arranged every interval of one prefabricated cover plate, and the grouting pipe is arranged at the center of the prefabricated cover plate, so as to facilitate the distribution and processing of the steel plate. It is further preferred that a water stop ring is sleeved outside the grouting pipe to prevent rainwater from flowing into the post-pouring belt from the outer wall of the grouting pipe.
[0012] As a further improvement of the pre-blocking structure of the post-pouring belt: the second waterproof layer includes a waterproof roll material. In this way, it is convenient to obtain and construct.
[0013] As a further improvement of the pre-blocking structure of the post-pouring belt: the waterproof roll material wraps the side of the pre-blocking structure, and the wrapping end is lower than the lower surface of the first waterproof layer. In this way, the waterproof effect of the second waterproof layer is improved, and rainwater is prevented from entering from the gap between the structure layers.
[0014] As a further improvement of the pre-blocking structure of the post-pouring belt: the second mortar layer forms an inclined surface on the side of the pre-blocking structure. In this way, not only does it play a certain waterproof role, but also it can support the pre-blocking structure, especially in the backfill construction of the basement roof, it can prevent the soil pressure of the backfill soil from damaging the side surface of the pre-blocking structure.
[0015] As a further improvement of the pre-blocking structure of the post-pouring belt: the height difference between the second mortar layer and the poured concrete top surface is ≤3 mm. In this way, the construction quality of the structure above the poured concrete can be improved.
[0016] It can be seen that the pre-plugging structure of the post-cast strip has simple structure, low cost, convenient construction and good waterproof effect, effectively solves the technical problem of poor waterproof performance of the pre-plugging structure in the prior art, especially in the construction of the basement roof backfill, can significantly improve the construction efficiency, and has strong practicability.
[0017] The embodiments of the application provided in the specification will be further described below in combination with the drawings and specific embodiments. Additional aspects and advantages of the embodiments of the application provided in the specification will be partially given in the following description, partially become obvious from the following description, or be understood by the practice of the embodiments of the application provided in the specification. BRIEF DESCRIPTION OF DRAWINGS
[0018] The drawings constituting part of the embodiments of the application provided in the specification are used to assist the understanding of the embodiments of the application provided in the specification, and the content provided in the drawings and its related description in the embodiments of the application provided in the specification can be used to explain the embodiments of the application provided in the specification, but do not constitute improper limitation on the embodiments of the application provided in the specification.
[0019] Figure 1 It is a horizontal schematic view of the pre-plugging structure of the post-cast strip of the embodiment 1 of the utility model.
[0020] Figure 2 It is a longitudinal schematic view of the pre-plugging structure of the post-cast strip of the embodiment 1 of the utility model.
[0021] Figure 3 It is a top view schematic view of the grouting pipe in the pre-plugging structure of the post-cast strip of the embodiment 1 of the utility model.
[0022] Figure 4 It is a horizontal schematic view of the pre-plugging structure of the post-cast strip of the embodiment 2 of the utility model.
[0023] The related marks in the above drawings are:
[0024] 100-cover plate layer, 110-precast cover plate, 120-reinforcing mesh, 130-hook bolt, 200-elastic sealing layer, 300-first waterproof layer, 310-steel plate, 400-first mortar layer, 500-second waterproof layer, 600-second mortar layer, 700-grouting pipe, 810-cast concrete bottom surface, 820-cast concrete top surface. DETAILED DESCRIPTION
[0025] The embodiments of the invention provided in this specification will now be clearly and completely described in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the embodiments of the invention provided in this specification based on these descriptions. Before describing the embodiments of the invention provided in this specification in conjunction with the accompanying drawings, it should be particularly noted that:
[0026] The technical solutions and features provided in the embodiments of the invention provided in this specification, including the following description, can be combined with each other without conflict.
[0027] Furthermore, the embodiments of the inventions provided in this specification mentioned below are generally only a portion of the embodiments of the inventions provided in this specification, and not all of them. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the inventions provided in this specification without creative effort should fall within the scope of protection of the embodiments of the inventions provided in this specification.
[0028] Regarding the terminology and units in the embodiments of the invention provided in this specification: The terms "comprising," "including," "having," and any variations thereof in the description, claims, and related parts of the embodiments of the invention provided in this specification are intended to cover non-exclusive inclusion. Furthermore, other relevant terms and units in the embodiments of the invention provided in this specification can be reasonably interpreted based on the relevant content of the embodiments of the invention provided in this specification. Example 1
[0029] Figure 1 This is a horizontal schematic diagram of the pre-sealing structure of the post-cast strip in this embodiment. Figure 2 This is a longitudinal schematic diagram of the pre-sealing structure of the post-cast strip in this embodiment. Figure 3 This is a top view of the grouting pipe in the pre-sealing structure of the post-cast strip in this embodiment.
[0030] like Figures 1-3 The pre-sealing structure of the post-cast strip shown includes a cover plate layer 100, an elastic sealing layer 200, a first waterproof layer 300, a first mortar layer 400, a second waterproof layer 500, a second mortar layer 600, and a grouting pipe 700.
[0031] The cover plate layer 100 has a reinforced concrete structure, which includes a steel mesh 120, on which hook bolts 130 are pre-embedded and fixed; the width of the cover plate layer 100 is greater than the width of the post-cast strip; the cover plate layer 100 includes precast cover plates 110 connected end to end along the direction of the post-cast strip.
[0032] The elastic sealing layer 200 is located on both sides of the post-pouring belt and is clamped between the bottom surface of the cover plate layer 100 and the bottom surface 810 of the poured concrete; the elastic sealing layer 200 is an rubber-plastic sponge layer, and the thickness is 0.5-2 cm.
[0033] The first waterproof layer 300 is arranged on the upper surface of the cover plate layer 100; the first waterproof layer 300 includes a steel plate 310 connected at the head and tail along the direction of the post-pouring belt, and the steel plate 310 is connected with the hook head bolt 130 embedded and fixed on the reinforcing mesh 120; the steel plate 310 is arranged in a staggered manner with the prefabricated cover plate 110.
[0034] The first mortar layer 400 is arranged on the upper surface of the first waterproof layer 300.
[0035] The second waterproof layer 500 is arranged on the upper surface of the first mortar layer 400; the second waterproof layer 500 includes an SBS waterproof roll material.
[0036] The second mortar layer 600 is wrapped on the upper surface of the second waterproof layer 500 and the side of the pre-blocking structure; the second mortar layer 600 forms an inclined surface on the side of the pre-blocking structure; the height difference between the second mortar layer 600 and the top surface 820 of the poured concrete is ≤3 mm.
[0037] The grouting pipe 700 penetrates the pre-blocking structure, and the arrangement interval of the grouting pipe 700 along the direction of the post-pouring belt is 3 m; the steel plate 310 located at the grouting pipe 700 has a circular-arc-shaped notch matched with the shape of the grouting pipe 700; one grouting pipe 700 is arranged every interval of one prefabricated cover plate 110, and the grouting pipe 700 is arranged at the center of the prefabricated cover plate 110; a water stop ring is arranged outside the grouting pipe 700; in order to facilitate operation, an extension pipe can be tightly connected to the upper end of the grouting pipe 700 to guide the concrete during the subsequent pouring of the post-pouring belt. Embodiment 2
[0038] Figure 4 It is a lateral schematic view of the pre-blocking structure of the post-pouring belt of the present embodiment.
[0039] Compared with embodiment 1, the pre-blocking structure of the post-pouring belt of the present embodiment has the difference that, as shown in Figure 4 the waterproof roll material wraps the side of the pre-blocking structure, and the wrapping end is lower than the lower surface of the first waterproof layer 300.
[0040] After the pre-blocking of the post-pouring belt of the basement roof is completed, the earthwork backfill construction is first carried out, wherein the soil within 1 m around the grouting pipe 700 is backfilled by manual spading and layered tamping to prevent the pre-blocking structure from being deviated and causing the failure of waterproof performance.
[0041] After the main body is capped for 14 days, the post-pouring belt is poured, self-compacting micro-expansion concrete is poured through the grouting pipe 700 until the level of the backfill soil, and after the self-compacting micro-expansion concrete reaches the strength, the grouting pipe 700 above the level of the backfill soil is cut off, and SBS coiled material is used for sealing and waterproof treatment.
[0042] The above describes the embodiments of the application provided in the specification. Those skilled in the art can implement the embodiments of the application provided in the specification based on the above description. Based on the above description of the embodiments of the application provided in the specification, all other preferred embodiments and examples obtained by those skilled in the art without creative labor shall belong to the protection scope of the embodiments of the application provided in the specification.
Claims
1. A pre-sealing structure for post-cast strips, characterized in that: include: A cover plate layer (100) having a reinforced concrete structure; the width of the cover plate layer (100) is greater than the width of the post-cast strip; the cover plate layer (100) includes precast cover plates (110) connected end to end along the direction of the post-cast strip. An elastic sealing layer (200) is located on both sides of the post-cast strip and is sandwiched between the bottom surface of the cover plate layer (100) and the bottom surface of the cast concrete (810). The first waterproof layer (300) is disposed on the upper surface of the cover plate layer (100); The first mortar layer (400) is disposed on the upper surface of the first waterproof layer (300); The second waterproof layer (500) is disposed on the upper surface of the first mortar layer (400); The second mortar layer (600) covers the upper surface of the second waterproof layer (500) and the sides of the pre-sealed structure.
2. The pre-sealing structure of the post-cast strip as described in claim 1, characterized in that: The elastic sealing layer (200) is a rubber-plastic sponge layer with a thickness of 0.5 to 2 cm.
3. The pre-sealing structure of the post-cast strip as described in claim 1, characterized in that: The reinforced concrete structure includes a steel mesh (120); the first waterproof layer (300) includes a steel plate (310) connected end to end along the direction of the post-cast strip, and the steel plate (310) is connected to a hook bolt (130) pre-embedded and fixed on the steel mesh (120).
4. The pre-sealing structure for the post-cast strip as described in claim 3, characterized in that: The steel plate (310) and the prefabricated cover plate (110) are arranged in a staggered manner.
5. The pre-sealing structure for the post-cast strip as described in claim 3, characterized in that: It also includes grouting pipes (700) that penetrate the pre-sealing structure, the grouting pipes (700) being arranged at a spacing of 3m along the direction of the post-cast strip; the steel plate (310) located at the grouting pipe (700) has an arc-shaped notch that matches the shape of the grouting pipe (700).
6. The pre-sealing structure of the post-cast strip as described in claim 1, characterized in that: The second waterproof layer (500) comprises a waterproof membrane.
7. The pre-sealing structure for the post-cast strip as described in claim 6, characterized in that: The waterproof membrane covers the sides of the pre-sealed structure, with the covered end being lower than the lower surface of the first waterproof layer (300).
8. The pre-sealing structure of the post-cast strip as described in claim 1, characterized in that: The second mortar layer (600) forms a slope on the side of the pre-sealed structure.
9. The pre-sealing structure for the post-cast strip as described in claim 1, characterized in that: The height difference between the second mortar layer (600) and the top surface of the poured concrete (820) is ≤3mm.