Advanced water stop post-cast strip structure of basement
By adopting multi-layer waterproofing measures and component structures in the advanced water-stopping post-pouring belt in the basement, the problem of easy cracking and leakage of the post-pouring belt is solved, and a higher anti-seepage effect and concrete quality are achieved.
Patent Information
- Application Number
- CN202420246581.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-01
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-02-01
AI Technical Summary
The basement water stopping after-water drainage is prone to cracking and leakage, the construction quality is difficult to guarantee, and the later maintenance cost is high.
It adopts a structure including cushion layer, waterproof protective layer, first steel layer, rubber waterstop, polypropylene plastic plate, waterstop steel plate, steel mesh, cement-based penetrating crystal coating and non-cured asphalt waterproof reinforcement layer. The anti-leakage effect of the post-cast tape is ensured layer by layer and the connection density of the concrete is increased.
It significantly improves the anti-seepage effect of the post-cast belt, enhances the durability and service life of the concrete, improves the construction quality, and reduces later maintenance costs.
Smart Images
Figure CN222375515U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to a basement advanced water-stop post-casting strip structure. Background Art
[0002] Post-cast strips are concrete strips with a certain width reserved in beams, slabs (including foundation slabs), walls and other structures to adapt to factors such as environmental temperature changes, concrete shrinkage, and uneven structural settlement. They are poured after a certain period of time. In order to prevent uneven building settlement from causing cracks in the main structure, most projects set up post-cast strips between parts with large height differences in the building structure, such as between the garage and the main building, and between the podium and the main building. Generally, the post-cast strip concrete needs to be poured after the main structure is completed and the settlement is basically stable.
[0003] When the foundation of a building is below the groundwater level, a traditional settlement post-casting strip is used, and the concrete pouring of the post-casting strip must be closed a certain period of time after the main structure is completed. This requires continuous dewatering of the basement to ensure that the groundwater level remains below the foundation. Dewatering can only be stopped after the main structure is completed and the post-casting strip concrete is poured. The function of the advance waterstop is to play a local waterproofing role before the post-casting strip is constructed, so it is necessary to construct the advance waterstop before the post-casting strip is constructed. The setting of the advance waterstop post-casting strip on the exterior wall of the basement is conducive to the full utilization of the underground space, meeting the requirements of the extra length and width of the building, releasing the stress of uneven settlement of the building structure, ensuring structural safety, and facilitating segmented construction.
[0004] However, in production practice, the basement advance water-stop post-cast joints generally have problems such as easy cracking and leakage of the outer wall, difficulty in ensuring construction quality, and high subsequent maintenance costs. Utility Model Content
[0005] The utility model aims to provide a basement advanced water-stop post-casting strip structure, which has the advantages of excellent anti-seepage effect and high casting quality, and solves the problems in the prior art.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A basement advance water-stop post-cast strip structure comprises a cushion layer, a waterproof protective layer is arranged above the cushion layer, a symmetrical first steel bar layer is bound and connected on both sides of the advance water-stop above the waterproof protective layer, a rubber water-stop is installed horizontally in the middle position of the advance water-stop, a polypropylene plastic plate is also arranged vertically in the middle position of the advance water-stop, a bottom layer of a bottom plate bidirectional steel bar is arranged above the first steel bar layer, a water-stop steel plate is arranged in the center position of the post-cast strip, a bottom layer of a bottom plate bidirectional steel bar is arranged above the water-stop steel plate, a steel wire mesh is arranged on both sides of the post-cast strip, two layers of concrete are poured on the side of the steel wire mesh away from the post-cast strip, a cement-based penetrating crystallization coating is arranged on the side of the two layers of concrete facing the post-cast strip, three layers of concrete are filled in the post-cast strip, and a non-solidified asphalt waterproof reinforcement layer is arranged on the boundary line between the two layers of concrete and the three layers of concrete.
[0008] Preferably, a waterproof additional layer with a width of not less than 250 mm is attached to the corners on both sides of the cushion layer.
[0009] Preferably, a layer of concrete is poured on both sides of the polypropylene plastic plate, and the first steel bar layer is buried in the layer of concrete.
[0010] Preferably, the groove of the waterstop steel plate faces the water-facing surface and penetrates into the post-cast zone by 150 mm.
[0011] Preferably, the thickness of the polypropylene plastic plate is 50 mm.
[0012] Preferably, the width of the post-cast strip is 800 mm.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] The utility model provides water-stop steel plates and steel wire meshes, adds additional waterproof layers at the inner and outer corners, applies cement-based penetrating crystalline materials on both sides of the advance water-stop before pouring the post-cast strip, and adds a non-solidified asphalt waterproof reinforcement layer before waterproofing the post-cast strip, thereby ensuring the anti-leakage effect of the post-cast strip layer by layer, making the connection between the concrete poured before and after more closely connected, which is beneficial to anti-seepage, and at the same time improving the durability of the cement-based material and extending its service life; therefore, the pouring quality of the post-cast strip is improved, and rework due to quality problems at a later stage is avoided. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is the first construction schematic diagram of the utility model;
[0016] Figure 2 It is a second construction schematic diagram of the utility model;
[0017] Figure 3 This is a third construction schematic diagram of the utility model;
[0018] Figure 4This is a fourth construction schematic diagram of the utility model;
[0019] In the figure: 1. cushion layer; 2. waterproof protective layer; 3. first steel bar layer; 4. rubber waterstop; 5. polypropylene plastic board; 6. bottom layer of base plate bidirectional steel bars; 7. bottom layer of base plate bidirectional steel bars; 8. waterstop steel plate; 9. second layer of concrete; 10. cement-based penetrating crystallization coating; 11. third layer of concrete; 12. non-curing asphalt waterproof reinforcement layer; 13. first layer of concrete. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] In order to solve the problems of cracking and leakage of the basement advanced water-stop post-casting belt in the prior art and the unguaranteed construction quality, the following technical solutions are provided. Please refer to Figure 1-4 ;
[0022] A basement advance water-stop post-cast strip structure, comprising a cushion layer 1, a waterproof protective layer 2 is provided above the cushion layer 1, a symmetrical first steel bar layer 3 is bound and connected on both sides of the advance water-stop above the waterproof protective layer 2, a rubber water-stop 4 is installed horizontally in the middle position of the advance water-stop, a polypropylene plastic plate 5 is also vertically arranged in the middle position of the advance water-stop, a bottom layer bidirectional steel bar 6 of the bottom plate is provided above the first steel bar layer 3, a water-stop steel plate 8 is provided in the center position of the post-cast strip, a bottom layer bidirectional steel bar 7 is provided above the water-stop steel plate 8, a steel wire mesh is provided on both sides of the post-cast strip, two layers of concrete 9 are poured on the side of the steel wire mesh away from the post-cast strip, a cement-based penetrating crystallization coating 10 is provided on the side of the two layers of concrete 9 facing the post-cast strip, three layers of concrete 11 are filled in the post-cast strip, and a non-solidified asphalt waterproof reinforcement layer 12 is provided on the boundary line between the two layers of concrete 9 and the three layers of concrete 11.
[0023] Specifically, the cement-based penetrating crystallization coating 10 is used to make the three layers of concrete 11 and the second layer of concrete 9 after the post-cast strip is poured more tightly, which is beneficial to anti-seepage, while improving the durability of the cement-based material and extending its service life; the non-solidified asphalt waterproof reinforcement layer 12 has good bonding properties, which can well seal the pores and cracks of the base layer, and further enhance the anti-seepage ability of the structure; the rubber waterstop 4 needs to be kept straight when placed and cannot be twisted.
[0024] A waterproof additional layer with a width of not less than 250mm is attached to the corners on both sides of the cushion layer 1; a layer of concrete 13 is poured on both sides of the polypropylene plastic plate 5, and the first steel bar layer 3 is buried in the layer of concrete 13; the groove of the water-stop steel plate 8 faces the water-facing surface and penetrates 150mm into the post-cast strip; the thickness of the polypropylene plastic plate 5 is 50mm; the width of the post-cast strip is 800mm.
[0025] Specifically, in order to achieve the above purpose, the utility model specifically implements the following steps:
[0026] Step 1: pour the cushion layer 1. Before waterproofing construction, paste a waterproof additional layer with a width of not less than 250mm at the corners on both sides of the cushion layer 1, carry out waterproofing construction of the base plate, lay the waterproof membrane, and pour the waterproof protective layer 2 on the waterproof membrane.
[0027] Step 2: Tie the first steel bar layer 3 on one side of the advance waterstop, install the rubber waterstop 4 in the middle position of the advance waterstop, first pour a layer of concrete 13 on one side of the advance waterstop, place a polypropylene plastic plate 5 next to the poured one side of the advance waterstop, then tie the first steel bar layer 3 on the other side of the advance waterstop, and pour a layer of concrete 13 on the other side.
[0028] Step three, tie the bottom bidirectional steel bars 6 of the bottom slab above a layer of concrete 13, position the water-stop steel plate 8 at the center of the bottom bidirectional steel bars 6 of the bottom slab, i.e., the post-cast strip, tie the bottom slab surface bidirectional steel bars 7 above the water-stop steel plate 8, set steel mesh on both sides of the post-cast strip and pour two layers of concrete 9.
[0029] Step 4: Clean and roughen both sides of the poured post-cast strip, apply a layer of cement-based penetrating crystal coating 10, and after the cement-based penetrating crystal coating 10 is completely attached to the surface of the second layer of concrete 9, pour three layers of concrete 11 in the post-cast strip.
[0030] Step 5: After the post-cast strip is cured, a layer of non-curing asphalt waterproof reinforcement layer 12 is laid on its surface.
[0031] Working principle: pour the cushion layer 1, post the waterproof additional layer on both sides of the cushion layer 1, lay the waterproof membrane, pour the waterproof protective layer 2 on the waterproof membrane, tie the first steel bar layer 3 on one side of the advance water stop, install the rubber water stop strip 4 in the middle of the advance water stop, first pour a layer of concrete 13 on one side of the advance water stop, place a polypropylene plastic plate 5 next to the advanced water stop on the poured side, then tie the first steel bar layer 3 on the other side and pour a layer of concrete 13, tie the bottom bidirectional steel bar 6 of the bottom plate above the layer of concrete 13, and The water-stop steel plate 8 is positioned at the center of the bottom bidirectional steel bar 6, that is, the post-cast strip, and the bottom plate surface bidirectional steel bar 7 is tied above the water-stop steel plate 8. Steel meshes are set on both sides of the post-cast strip and two layers of concrete 9 are poured. The two sides of the post-cast strip are cleaned and roughened, and a layer of cement-based penetrating crystallization coating 10 is applied. After the cement-based penetrating crystallization coating 10 is completely attached to the surface of the two layers of concrete 9, three layers of concrete 11 are poured in the post-cast strip. Finally, a layer of non-solidified asphalt waterproof reinforcement layer 12 is laid on the boundary line between the second layer of concrete 9 and the third layer of concrete 11.
[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A basement advanced water-stop post-casting strip structure, comprising a cushion layer (1), characterized in that: A waterproof protective layer (2) is provided above the cushion layer (1), and a symmetrical first steel bar layer (3) is bound and connected on both sides of the advanced water stop above the waterproof protective layer (2), a rubber water stop strip (4) is installed horizontally in the middle of the advanced water stop, and a polypropylene plastic plate (5) is also vertically arranged in the middle of the advanced water stop, a bottom bidirectional steel bar (6) of the bottom plate is provided above the first steel bar layer (3), a water stop steel plate (8) is provided at the center of the post-cast strip, and a bottom bidirectional steel bar (7) of the surface layer of the bottom plate is provided above the water stop steel plate (8), a steel wire mesh is provided on both sides of the post-cast strip, two layers of concrete (9) are poured on the side of the steel wire mesh away from the post-cast strip, and a cement-based penetrating crystallization coating (10) is provided on the side of the two layers of concrete (9) facing the post-cast strip, and three layers of concrete (11) are filled in the post-cast strip, and a non-solidified asphalt waterproof reinforcement layer (12) is provided on the boundary line between the two layers of concrete (9) and the three layers of concrete (11).
2. The basement advanced water-stop post-casting strip structure according to claim 1 is characterized in that: A waterproof additional layer with a width of not less than 250 mm is attached to the positive and negative corners on both sides of the cushion layer (1).
3. The basement advanced water-stop post-casting strip structure according to claim 1 is characterized in that: A layer of concrete (13) is poured on both sides of the polypropylene plastic plate (5), and the first steel bar layer (3) is buried in the layer of concrete (13).
4. The basement advanced water-stop post-casting strip structure according to claim 1 is characterized in that: The groove of the water-stop steel plate (8) faces the water-facing surface and penetrates into the post-casting zone by 150 mm.
5. The basement advanced water-stop post-casting strip structure according to claim 1 is characterized in that: The thickness of the polypropylene plastic plate (5) is 50 mm.
6. The basement advanced water-stop post-casting strip structure according to claim 1 is characterized in that: The width of the post-casting strip is 800 mm.