Anti-seepage post-cast strip structure of basement roof

Abstract

The utility model relates to the technical field of post-cast strip construction, in particular to an anti-seepage post-cast strip structure of a basement roof, which comprises a sparse soil layer, a cushion layer and a plurality of concrete blocks formed by concrete pre-casting which are sequentially arranged from bottom to top, a sinking groove for laying the cushion layer is pre-formed in the loose soil layer, cross-shaped reserved grooves for pouring the post-pouring belt are reserved between the concrete blocks, and pouring water-collecting wells for depositing accumulated water and sundries are formed in the cross-shaped positions of the cross-shaped reserved grooves. The basement post-cast strip reserved groove has the advantages that the problem that sundries are prone to being deposited in the basement post-cast strip reserved groove is solved, and the post-cast strip construction quality is improved.

Description

Technical Field

[0001] This application relates to the technical field of post-cast strip construction, and in particular to a leak-proof post-cast strip structure for the basement top slab. Background Art

[0002] With the rapid development of urban economy and the relatively scarce land resources, most main buildings need to be equipped with basements to ensure the maximum space utilization rate and the parking demand of household cars. The basements of the main urban buildings have become a necessary project, and the requirements for basement construction are gradually increasing. In order to improve the urban space utilization rate, the basement area is generally designed to be large. To ensure the overall structural stability, post-cast strips need to be set on the basement top slab to divide the entire slab into regions, thus resulting in the construction of post-cast strip nodes.

[0003] A post-cast strip is a concrete strip left at the corresponding positions of the foundation top slab, wall, and beam according to the design or construction specification requirements to prevent harmful cracks that may occur in the reinforced concrete structure due to uneven self-shrinkage or settlement. The post-cast strip belongs to secondary casting. If the quality control is not good during the construction process, it is easy to cause potential hazards such as water seepage and leakage.

[0004] Therefore, attention should be paid to the quality of the surrounding concrete during the construction of the concrete around the post-cast strip to ensure that a whole structure can be formed with the surrounding concrete blocks after the post-cast strip is poured, and to avoid the post-cast strip becoming a weak stress point. During the construction process, sundries and floating slurry are likely to accumulate in the reserved grooves of the post-cast strip, and there is still room for improvement. Utility Model Content

[0005] In order to improve the problem that sundries are likely to accumulate in the reserved grooves of the basement post-cast strip and improve the construction quality of the post-cast strip, this application provides a leak-proof post-cast strip structure for the basement top slab.

[0006] A leak-proof post-cast strip structure for the basement top slab provided by this application adopts the following technical solution:

[0007] A leak-proof post-cast strip structure for the basement top slab includes a soil drainage layer, a cushion layer, and a number of concrete blocks pre-cast from concrete, which are arranged in an array from bottom to top. The soil drainage layer is pre-opened with a sinking groove for laying the cushion layer. A cross-shaped reserved groove for pouring the post-cast strip is left between each concrete block, and a pouring sump for accumulating water and sundries is opened at the cross position of the cross-shaped reserved groove.

[0008] By adopting the above technical solution, a pouring sump is arranged at the intersection of the cross-shaped reserved grooves, so that sundries can gather in the pouring sump, which is convenient for quickly collecting and cleaning the sundries deposited at the post-cast strip of the basement before pouring. Compared with cleaning the four cross-shaped reserved grooves at least four times, cleaning the pouring sump alone is simple and fast, reducing the construction period delayed due to cleaning sundries and improving the construction efficiency. Thus, during the pouring of the post-cast strip, the influence of these pollutants on the concrete quality can be avoided, significantly reducing the sundries and accumulated water in the post-cast strip area before pouring, improving the bonding strength and integrity between the post-cast strip and the surrounding concrete, being easy to construct and being able to reduce potential hazards such as water seepage and leakage, improving the anti-pollution ability of the post-cast strip, greatly improving the economy and safety of the project construction, enhancing the management quality of the basement construction operation, improving the construction efficiency and improving the overall construction quality.

[0009] Further, the cross-shaped reserved grooves are inclined downward towards the pouring sump for guiding accumulated water and sundries into the pouring sump.

[0010] By adopting the above technical solution, the inclined setting of the cross-shaped reserved grooves can naturally guide the accumulated water and sundries in the post-cast strip area into the pouring sump, improving the drainage efficiency, avoiding the retention and deposition of accumulated water and sundries in the post-cast strip and the reserved grooves, reducing the difficulty of cleaning work, keeping the post-cast strip area dry and clean by timely cleaning the accumulated water and sundries, thus reducing problems such as water seepage and leakage and preventing concrete quality problems caused by accumulated water and sundries.

[0011] Further, the pouring sump is provided with an advanced water stop belt at the bottom for preventing water seepage.

[0012] By adopting the above technical solution, the advanced water stop belt, as a physical barrier, can effectively prevent groundwater from seeping into the basement roof through the bottom of the sump, thus ensuring the dryness and stability of the basement and enhancing the overall waterproofing ability of the structure.

[0013] Further, a water stop steel plate for guiding underground seepage water to flow into the cross-shaped reserved grooves is embedded on one side of the concrete block facing the cross-shaped reserved grooves, and the water stop steel plate protrudes from the concrete block and is located at the central position of the concrete block in the height direction.

[0014] By adopting the above technical solution, the water stop steel plate can enhance the waterproof performance of the basement roof. The water stop steel plate protrudes from the concrete block and is located at the central position in its height direction, which can effectively guide the underground seepage water to flow into the cross-shaped reserved grooves along a predetermined path, and then flow into the pouring sump, reducing the disorderly flow of seepage water between the concrete blocks and reducing the influence of seepage water on the structure.

[0015] Further, a drainage groove for guiding underground seepage water to flow into the casting sump is provided on the top side of the cross-shaped reserved groove, and the drainage groove is communicated with the casting sump.

[0016] By adopting the above technical solution, the opening of the drainage groove can accelerate the discharge of underground seepage water, enabling the seepage water to flow into the sump in a timely manner, and keeping the concrete block and the basement roof dry and stable. The drainage groove can direct the underground seepage water to flow into the casting sump along a predetermined path, avoiding the disorderly flow of underground seepage water, reducing the pressure of seepage water on the basement roof and surrounding structures, and preventing structural damage and deformation caused by seepage water.

[0017] Further, the drainage groove includes a main groove body and a plurality of auxiliary groove bodies arranged on both sides of the main groove body and communicated with the main groove body.

[0018] By adopting the above technical solution, the auxiliary groove bodies cover the areas on both sides of the main groove body, and together with the main groove body, form a fishbone-shaped drainage structure. The combination of the main groove body and the auxiliary groove bodies makes the seepage water collection range wider, ensuring that the generated seepage water is collected in a timely manner and guided to the main groove body. The added auxiliary groove bodies reduce the possibility of seepage water leakage. Even if the seepage water flows inside the concrete block and deviates from the direction of the main groove body, it is captured by the auxiliary groove bodies and redirected to the correct drainage path, reducing the disorderly flow of seepage water.

[0019] Further, a grille is provided above the casting sump.

[0020] By adopting the above technical solution, the grille can effectively block large solid debris such as gravel from entering the sump, but the water flow can pass through smoothly, which is equivalent to playing a filtering role and will not affect the drainage efficiency due to the blockage of debris. At the same time, the grille is also convenient for cleaning debris. Only by cleaning the upper part of the grille can the solid debris be collected and cleaned.

[0021] Further, a step for clamping and fixing the grille is provided on the upper side edge of the cross-shaped reserved groove.

[0022] By adopting the above technical solution, the step provides a clear installation position for the grille, enabling the grille to be accurately clamped into the upper side edge of the reserved groove. Through the fixing effect of the step, the grille is not easily displaced during the subsequent debris cleaning process, avoiding debris falling into the casting sump during the cleaning process. The coordinated setting of the step and the grille can continue to bear the supporting role during the casting of the post-cast strip after the debris and accumulated water are cleaned, thereby enhancing the load-bearing capacity of the lower structure of the post-cast strip.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting a casting sump at the intersection of the cross-shaped reserved grooves, rapid centralized collection and cleaning of sundries and accumulated water can be achieved. Compared with traditional methods, it can reduce the number and difficulty of cleaning, significantly shorten the construction period, improve construction efficiency, and also avoid the impact of sundries and accumulated water on the casting quality of the post-cast strip, improve the bonding strength and integrity between the post-cast strip and the surrounding concrete, thereby enhancing the overall construction quality.

[0025] 2. As a physical barrier, the waterstop steel plate can enhance the waterproof performance of the basement roof slab and block the penetration of groundwater. The cross-shaped reserved grooves are inclinedly designed to naturally guide the accumulated water to the sump by gravity, improving the drainage efficiency. The drainage groove is arranged through the cooperation of the main groove body and the auxiliary groove body to jointly form a more efficient fishbone-shaped drainage network, increasing the range of seepage water collection and reducing the retention and leakage of accumulated water.

[0026] 3. The combined use of the grille and the steps not only blocks solid sundries from entering the sump but also facilitates the cleaning of sundries. At the same time, it ensures the stability of the grille and avoids displacement during the cleaning process. It not only improves the drainage and cleaning efficiency during construction but also plays a supporting role during the subsequent casting of the post-cast strip, enhancing the load-bearing capacity of the lower structure of the post-cast strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a sectional structure schematic diagram of the anti-seepage post-cast strip structure of the basement roof slab in Embodiment 1 of the present application.

[0028] Figure 2 is an overall structure schematic diagram of the anti-seepage post-cast strip structure of the basement roof slab in Embodiment 1 of the present application.

[0029] Figure 3 is an exploded structure schematic diagram of the anti-seepage post-cast strip structure of the basement roof slab in Embodiment 1 of the present application.

[0030] Figure 4 is an overall structure schematic diagram of the anti-seepage post-cast strip structure of the basement roof slab in Embodiment 2 of the present application.

[0031] Figure 5 is an exploded structure schematic diagram of the anti-seepage post-cast strip structure of the basement roof slab in Embodiment 2 of the present application.

[0032] Figure 6 is Figure 5 a magnified structure schematic diagram of the grille and the steps at part A in

[0033] Figure 7 is a sectional structure schematic diagram of the anti-seepage post-cast strip structure of the basement roof slab in Embodiment 2 of the present application.

[0034] Figure 8 is Figure 7Schematic enlarged view of the main trough body and auxiliary trough body of the drainage trough in part B

[0035] Explanation of reference numerals: 1, permeable soil layer; 11, sinking trough; 2, cushion layer; 3, concrete block; 4, cross-shaped reserved groove; 5, pouring sump; 51, advanced water stop belt; 52, step; 6, water stop steel plate; 7, drainage trough; 71, main trough body; 72, auxiliary trough body; 8, grid Specific implementation mode

[0036] In order to make the purpose, technical solution and advantages of the present application clearer, the following further describes the present application in detail with reference to Embodiment 1, Embodiment 2 and the attached Figure 1-8 ,

[0037] Embodiment 1

[0038] The embodiment of the present application discloses a leak-proof post-cast strip structure for a basement roof. Referring to Figure 1 and Figure 2 , the leak-proof post-cast strip structure of the basement roof includes a permeable soil layer 1, a cushion layer 2 and concrete blocks 3. The permeable soil layer 1, the cushion layer 2 and the concrete blocks 3 are arranged in sequence from bottom to top. Combining Figure 3 , the permeable soil layer 1 is pre-opened with a sinking trough 11 for laying the cushion layer 2

[0039] The number of the concrete blocks 3 is several and they are arranged in an array above the cushion layer 2. For the convenience of display, only four adjacent concrete blocks 3 are shown in this embodiment. The concrete blocks 3 are pre-cast with concrete, and a cross-shaped reserved groove 4 for post-cast strip pouring is left between adjacent concrete blocks 3

[0040] Referring to Figure 1 , in this embodiment, a pouring sump 5 is opened at the cross position of the cross-shaped reserved groove 4, and the pouring sump 5 can deposit the accumulated water and sundries in the cross-shaped reserved groove 4. An advanced water stop belt 51 for preventing groundwater seepage is laid at the bottom of the pouring sump 5

[0041] The cross-shaped reserved groove 4 is inclined downward towards the pouring sump 5. In this embodiment, the inclination angle of the cross-shaped reserved groove 4 is 2°. The inclined downward groove is convenient for guiding the accumulated water and sundries into the pouring sump 5

[0042] A water stop steel plate 6 is embedded on one side of the concrete block 3 facing the cross-shaped reserved groove 4. Before the post-cast strip is poured, the water stop steel plate 6 protrudes from the concrete block 3 and is located at the central position of the concrete block 3 along the height direction. The water stop steel plate 6 can guide the underground seepage water in the concrete block 3 into the lower cross-shaped reserved groove 4. After the post-cast strip is poured, the water stop steel plate 6 can also form an additional support at the middle position of the post-cast strip, providing a better integral connection effect between the post-cast strip and the concrete block 3

[0043] The implementation principle of the anti-seepage post-cast strip structure for the basement top slab in the embodiments of the present application is as follows: By sequentially arranging the permeable soil layer 1, cushion layer 2, and concrete blocks 3 from bottom to top, a multi-layer anti-seepage structure is formed. The permeable soil layer 1 provides a stable foundation, the cushion layer 2 serves as a waterproof barrier, and the concrete blocks 3 constitute the main load-bearing and enclosure structure. A cross-shaped reserved groove 4 is reserved between the concrete blocks 3 to provide a pouring space for the post-cast strip. A pouring sump 5 is opened at the intersection position, and the cross-shaped reserved groove 4 is inclined downward. By using the gravity effect, the accumulated water and sundries are naturally guided into the sump. On the one hand, it reduces the retention and deposition of accumulated water and sundries in the cross-shaped reserved groove 4, reducing the risk of water seepage. On the other hand, when pouring the post-cast strip, only the sundries in the pouring sump 5 need to be cleaned before subsequent work, improving the cleaning work efficiency.

[0044] A waterstop steel plate 6 is embedded on one side of the concrete block 3 facing the cross-shaped reserved groove 4. Before pouring, the waterstop steel plate 6 protrudes from the concrete block 3 and is located at the central position in its height direction, which can guide the underground seepage water to flow into the cross-shaped reserved groove 4 along a predetermined path, and then drain into the pouring sump 5. After the post-cast strip is poured, the waterstop steel plate 6 forms an additional support at the middle position of the post-cast strip, enhancing the integral connection effect between the post-cast strip and the concrete block 3, and improving the integrity and stability of the structure.

[0045] Embodiment 2

[0046] Refer to Figure 4 and Figure 5 The difference between the anti-seepage post-cast strip structure for the basement top slab disclosed in the embodiments of the present application and that in Embodiment 1 is as follows: In this embodiment, a drainage groove 7 is opened on the top side of the cross-shaped reserved groove 4. The drainage groove 7 is interconnected with the pouring sump 5, so that the underground seepage water in the cross-shaped reserved groove 4 can be quickly guided into the pouring sump 5 by the drainage groove 7.

[0047] Refer to Figure 7 and Figure 8 The drainage groove 7 includes a main groove body 71 and several sub-groove bodies 72. The sub-groove bodies 72 are arranged on both sides of the main groove body 71 and are interconnected with the main groove body 71, jointly forming a fishbone-shaped drainage structure with the main groove body 71. The combination of the main groove body 71 and the sub-groove bodies 72 makes the seepage water collection range wider, ensuring that the generated seepage water is collected in time and guided to the main groove body 71.

[0048] Refer to Figure 6 A grille net 8 is covered above the pouring sump 5, and a step 52 is opened on the upper side edge of the cross-shaped reserved groove 4. The step 52 can be used for the grille net 8 to be snapped in and fixed.

[0049] The implementation principle of a leak-proof post-cast strip structure for a basement top slab in an embodiment of this application is as follows: The main trough 71 is used to guide the underground seepage water in the cross-shaped reserved groove 4 into the pouring sump 5. The added secondary trough 72 reduces the possibility of seepage water leakage. When the seepage water flows inside the concrete block 3 and deviates from the direction of the main trough 71, it is also captured by the secondary trough 72 and redirected to the correct drainage path, reducing the disorderly flow of the seepage water.

[0050] The grille 8 blocks large solid debris such as gravel from entering the sump, but allows water to flow through smoothly, facilitating the cleaning of debris before the post-cast strip is poured. The operation only requires sweeping above the grille 8 to collect and clean the solid debris. Placing the grille 8 on the step 52 can achieve a certain fixing effect, preventing displacement during the cleaning process, thereby avoiding solid debris from entering the pouring sump 5.

[0051] When the post-cast strip is being poured, the grille 8 can also continue to bear the supporting role, thereby enhancing the load-bearing capacity of the lower structure of the post-cast strip.

[0052] The above are all preferred embodiments of this application. Without restricting the protection scope of this application accordingly, therefore: All equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A leak - proof post - casting belt structure for a basement roof slab, comprising a soil - draining layer (1), a cushion layer (2), and a number of concrete blocks (3) pre - cast with concrete, which are arranged in an array. The soil - draining layer (1) is pre - opened with a sunken groove (11) for laying the cushion layer (2). A cross - shaped reserved groove (4) for post - casting belt pouring is left between each of the concrete blocks (3). It is characterized in that: The cross reserved groove (4) is provided with a pouring water collection well (5) at the cross intersection position for the accumulation of water and debris.

2. The anti-seepage post-cast strip structure of the basement roof slab according to claim 1, characterized in that: The cross reserved groove (4) is opened obliquely downward in the direction of the pouring water collection well (5) to guide the accumulated water and debris into the pouring water collection well (5).

3. The anti-seepage post-cast strip structure of the basement roof slab according to claim 2, wherein: The pouring water collection well (5) is provided with an advance water stop strip (51) at the bottom for preventing water seepage.

4. The anti-seepage post-cast strip structure of the basement top slab according to claim 2, characterized in that: The concrete block (3) is pre-buried with a water-stopping steel plate (6) on one side facing the cross reserved groove (4) for guiding underground seepage water to flow into the cross reserved groove (4); the water-stopping steel plate (6) protrudes from the concrete block (3) and is located at the center of the concrete block (3) in the height direction.

5. The anti-seepage post-cast strip structure of the basement roof slab according to claim 2, characterized in that: The cross reserved groove (4) is provided with a drainage groove (7) on the top side for guiding underground seepage water to flow into the pouring water collection well (5), and the drainage groove (7) and the pouring water collection well (5) are interconnected.

6. The anti-seepage post-cast strip structure of the basement top slab according to claim 5, characterized in that: The drainage trough (7) comprises a main trough body (71) and a plurality of auxiliary trough bodies (72) arranged on both sides of the main trough body (71) and interconnected with the main trough body (71).

7. The anti-seepage post-cast strip structure of the basement roof slab according to claim 2, characterized in that: A grille net (8) is provided above the pouring water collection well (5).

8. The anti-seepage post-cast strip structure of the basement top slab according to claim 7, characterized in that: The cross reserved groove (4) is provided with a step (52) on the upper side edge for the grille net (8) to be inserted and fixed.

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