Construction structure based on basement bottom plate post-cast strip pressure relief
By installing a combination structure of a waterproof layer, a gravel drainage layer, and drainage pipes on the basement floor slab, the problems of cracking and leakage caused by groundwater seepage were solved, ensuring the reliability of the basement's quality and the safety of the project.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR FOURTH ENG DIV CORP LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-29
Smart Images
Figure CN224300043U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building technology, and more specifically, to a construction structure based on the pressure relief of the post-cast strip of the basement floor slab. Background Technology
[0002] Currently, in the construction of super high-rise buildings in urban areas, post-cast strips in the basement are temporary construction joints set up to address issues such as uneven settlement between the main building and the podium, shrinkage deformation of reinforced concrete, and temperature stress in the concrete. Therefore, the market currently uses post-cast strips as a supporting measure for the foundation slab. However, the following problems still exist in practical applications:
[0003] (1) When the concrete is poured into the post-pouring strip of the base slab, it cannot be poured densely due to the pressure of groundwater. Groundwater can seep through cracks or micro-cracks in the post-pouring strip. During the rainy season, due to the large fluctuation of the groundwater level, the water pressure will directly hit the weak part of the post-pouring strip, causing local cracking, which will lead to a great hidden danger of water seepage and cracking in the entire base slab.
[0004] (2) Existing waterproofing technologies are not effective in dealing with high water pressure environments and cannot fully achieve waterproofing.
[0005] The above problems will cause extensive cracking and leakage in the foundation slab, greatly reducing the reliability of the basement and affecting the safety of subsequent construction.
[0006] Therefore, this utility model provides a construction structure based on the pressure relief of the post-pouring strip of the basement floor slab, which can ensure the reliability of the basement quality and guarantee the safety of subsequent projects. Utility Model Content
[0007] In order to overcome the shortcomings of the existing technology, this utility model provides a construction structure based on the pressure relief of the post-pouring strip of the basement floor slab. This structure can solve the problems of the existing technology, which easily causes a large number of cracks and leaks in the floor slab, greatly reducing the reliability of the basement quality and affecting the safety of subsequent projects. This structure can ensure the reliability of the basement quality and the safety of subsequent projects.
[0008] The technical solution adopted by this utility model to solve its technical problem is: a construction structure based on pressure relief of post-cast strips in basement slabs. The improvement lies in that the construction structure based on pressure relief of post-cast strips in basement slabs includes a basement waterproof layer, a gravel drainage layer, a drainage pipe, a pressure relief component, a basement slab, and a floor. The basement slab is laid between the floor and the underground waterproof layer, and the floor adheres to the top surface of the basement slab. The basement waterproof layer adheres to the bottom surface of the basement slab. A groove is provided in the middle of the top of the basement waterproof layer, and the gravel drainage layer is located in the groove. The drainage pipe is pre-embedded in the basement slab, with one end close to the floor and the other end inserted into the gravel drainage layer. The pressure relief component passes through the floor and is inserted into the basement slab, and is fixedly connected to the drainage pipe.
[0009] The pressure relief component includes a ball valve, a connecting rod, and a rotating wheel; the ball valve is fixedly connected to the drain pipe; one end of the connecting rod is rotatably connected to the ball valve, and the other end is fixedly connected to the rotating wheel.
[0010] In the above structure, the drainage pipe includes a first PVC pipe, a second PVC pipe, and a third PVC pipe; the first PVC pipe is horizontally positioned in the middle of the basement floor slab; the second and third PVC pipes are both vertically positioned in the basement floor slab, with one end of the second PVC pipe fixedly connected to one end of the first PVC pipe, and the other end of the second PVC pipe close to the ground level; one end of the third PVC pipe is fixedly connected to the other end of the first PVC pipe, and the other end of the third PVC pipe is inserted into the gravel drainage layer.
[0011] In the above structure, the drain pipe further includes a first adapter and a second adapter. The first adapter is fixedly connected between one end of the first PVC pipe and one end of the second PVC pipe; the second adapter is fixedly connected between one end of the first PVC pipe and the other end of the third PVC pipe.
[0012] In the above structure, the construction structure based on the pressure relief of the post-cast strip of the basement floor slab also includes crushed stone geotextile, which is wrapped around the other end of the third PVC pipe.
[0013] In the above structure, the crushed stone geotextile has evenly distributed circular holes, the diameter of which is between 5mm and 10mm.
[0014] In the above structure, the construction structure based on the pressure relief of the post-cast strip of the basement floor slab also includes non-woven fabric, which is placed between the basement floor slab layer and the gravel drainage layer.
[0015] In the above structure, the crushed stone guide layer is composed of graded crushed stone with a thickness of 8cm-12cm.
[0016] In the above structure, the particle size range of the graded crushed stone is between 2.36 mm and 25 mm, and 50%-70% of the graded crushed stone has a particle size range between 2.36 mm and 9.5 mm.
[0017] The beneficial effects of this utility model are as follows: This utility model prevents a large amount of groundwater from seeping into the basement waterproof layer through the basement waterproof layer; it guides the groundwater seepage between the basement waterproof layer and the basement floor slab to the gravel drainage layer through the groove, and then diverts the groundwater seepage in the groove to the drainage pipe through the gravel drainage layer, thereby reducing the buoyancy pressure of the groundwater seepage on the basement floor slab. Furthermore, by rotating the wheel to adjust the opening degree of the ball valve, it adapts to changes in groundwater level, further reducing the impact of the buoyancy pressure of the groundwater seepage on the basement floor slab. Therefore, this utility model can solve the problem in the prior art that easily causes a large number of cracks and leaks in the floor slab, which greatly reduces the reliability of the basement quality and affects the safety of subsequent projects, thereby ensuring the reliability of the basement quality and the safety of subsequent projects. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of a construction structure based on a post-cast strip for pressure relief in a basement floor slab, according to this utility model. Figure 1 ;
[0019] Figure 2 This is a schematic diagram of the overall structure of a construction structure based on a post-cast strip for pressure relief in a basement floor slab, according to this utility model. Figure 2 . Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.
[0022] Reference Figure 1 and Figure 2As shown, this utility model discloses a construction structure based on pressure relief of post-cast strips in basement slabs. The construction structure includes a basement waterproof layer 1, a gravel drainage layer 3, a drainage pipe 14, pressure relief components, a basement slab layer 2, and a floor slab 4. The basement slab layer 2 is laid between the floor slab 4 and the underground waterproof layer, and the floor slab 4 is attached to the top surface of the basement slab layer 2. The basement waterproof layer 1 is attached to the bottom surface of the basement slab layer 2. A groove 1 is provided in the middle of the top of the basement waterproof layer 1. 3. The crushed stone drainage layer 3 is located in the groove 13; the drainage pipe 14 is pre-embedded in the basement floor slab 2, with one end of the drainage pipe 14 close to the ground 4 and the other end inserted into the crushed stone drainage layer 3; the pressure relief component passes through the ground 4 and is inserted into the basement floor slab 2, and is fixedly connected to the drainage pipe 14; the pressure relief component includes a ball valve 12, a connecting rod 11, and a rotating wheel 10; the ball valve 12 is fixedly connected to the drainage pipe 14; one end of the connecting rod 11 is rotatably connected to the ball valve 12, and the other end is fixedly connected to the rotating wheel 10.
[0023] It should be noted that, in this embodiment, the basement waterproof layer 1 serves as the first waterproof barrier, preventing a large amount of groundwater at the bottom of the basement waterproof layer 1 from seeping into the basement floor slab 2. The groove 13 in the middle of the basement waterproof layer 1 is designed to concentrate the seepage water and prevent moisture from spreading on the surface of the waterproof layer. In a preferred embodiment, the basement waterproof layer 1 typically uses a polymer waterproof membrane (such as SBS or PVC) or a coating waterproof layer (such as polyurethane) to ensure overall sealing. The gravel drainage layer 3 is used to guide the seepage water to the drainage pipe 14. The drainage system is used to collect and drain the seepage water from the gravel drainage layer 3. The pressure relief component consists of a ball valve 12, a connecting rod 11, and a rotating wheel 10. The operator controls the opening degree of the ball valve 12 by rotating the rotating wheel 10 to adjust the drainage volume and achieve active pressure relief; the basement floor slab 2 serves as the structural load-bearing layer of the basement, used to bear the load on the top of the basement floor; the floor 4 provides a flat surface for the basement to facilitate vehicle or personnel passage; in the specific implementation of this utility model, firstly, a basement waterproof layer 1 needs to be set on the soil structure to prevent a large amount of groundwater from seeping to the top of the underground waterproof layer, and a groove 13 is set on the top of the basement waterproof layer 1 to guide and collect the groundwater seepage at the top of the basement waterproof layer 1; then, a uniform crushed stone guide layer 3 is laid in the groove 13 on the top of the underground waterproof layer, wherein the crushed stone guide layer 3 consists of 8cm- The basement consists of a 12cm thick layer of graded crushed stone; the particle size of the graded crushed stone ranges from 2.36mm to 25mm, with 50%-70% of the particle size ranging from 2.36mm to 9.5mm. Due to the large number of interconnected pores between the graded crushed stone particles, far exceeding those in dense concrete or natural clay, groundwater seepage preferentially flows along these pores under gravity, guiding the seepage into the drainage pipe 14. Next, drainage pipes 14 are pre-embedded at 15m-20m intervals in the basement floor slab 2, and pressure relief components are installed. Finally, concrete is poured in the basement floor slab 2 (layered pouring and vibration; the thickness of each layer should not exceed 300mm; during vibration, the vibrator should avoid contact with reinforcing bars, formwork, and drainage pipes 14). (Including waterstops, etc.), after the concrete hardens, the connecting rod 11 is cut off, the drainage pipe 14 is sealed, and the floor 4 is restored. During the concrete hardening process, the workers need to adjust the opening degree of the ball valve 12 by rotating the wheel 10 according to the actual water level of the underground seepage, so as to drain the groundwater in time and reduce the impact of the buoyancy of the underground seepage on the hardening of the basement floor concrete, so as to avoid the phenomenon of large-scale cracking and leakage of the basement floor concrete. Therefore, this embodiment can solve the problem that the existing technology is prone to causing large-scale cracking and leakage of the basement slab, which greatly reduces the reliability of the basement quality and affects the safety of subsequent projects, thereby ensuring the reliability of the basement quality and the safety of subsequent projects.
[0024] Reference Figure 1 and Figure 2 As shown, the drainage pipe 14 includes a first PVC pipe 5, a second PVC pipe 6, a third PVC pipe 7, a first adapter 8, and a second adapter 9. The first PVC pipe 5 is horizontally positioned in the middle of the basement floor slab 2. The second PVC pipe 6 and the third PVC pipe 7 are both vertically positioned in the basement floor slab 2, with one end of the second PVC pipe 6 fixedly connected to one end of the first PVC pipe 5, and the other end of the second PVC pipe 6 close to the floor 4. One end of the third PVC pipe 7 is fixedly connected to the other end of the first PVC pipe 5, and the other end of the third PVC pipe 7 is inserted into the gravel drainage layer 3. The drainage pipe 14 also includes a first adapter 8 fixedly connected between one end of the first PVC pipe 5 and one end of the second PVC pipe 6, and a second adapter 9 fixedly connected between one end of the first PVC pipe 5 and the other end of the third PVC pipe 7.
[0025] It should be noted that, in this embodiment, the first PVC pipe 5, the second PVC pipe 6, and the third PVC pipe 7 constitute a drainage channel for underground seepage. The first PVC pipe 5 is horizontally arranged in the middle of the basement floor slab 2, serving as the main drainage pipe. The lower end of the second PVC pipe 6 is connected to one end of the first PVC pipe 5 via a first adapter 8, and its upper end extends to the vicinity of the ground level 4, serving as a pressure relief outlet. The upper end of the third PVC pipe 7 is connected to the other end of the first PVC pipe 5 via a second adapter 9, and its lower end is inserted into the gravel drainage layer 3, serving as a water collection inlet. The first adapter 8 and... The second adapter 9 is used to ensure the sealing of the connection between the first PVC pipe 5, the second PVC pipe 6 and the third PVC pipe 7. In a specific implementation of this utility model, firstly, the underground seepage water in the vertical gravel guide layer is drawn by the third PVC pipe 7; then, the underground seepage water flows upward through the third PVC pipe 7 and enters the horizontal main pipe of the first PVC pipe 5 through the second adapter 9; finally, the underground seepage water flows along the first PVC pipe 5, enters the second PVC pipe 6 through the first adapter 8, rises to the top of the basement floor slab 2 and is discharged. In addition, the workers control the drainage rate by adjusting the opening degree of the ball valve 12.
[0026] Reference Figure 1 As shown, the construction structure based on the pressure relief of the post-cast strip of the basement floor slab also includes a crushed stone geotextile, which is wrapped around the other end of the third PVC pipe 7; the crushed stone geotextile has evenly distributed round holes, the diameter of which is between 5mm and 10mm.
[0027] It should be noted that in this embodiment, the gravel geotextile is designed to allow water to pass through, but to prevent fine particles in the gravel layer from entering the pipe, thus avoiding the failure of the drainage pipe 14 due to sediment deposition. In addition, the water flow rate is controlled by the evenly distributed round holes to prevent localized excessively rapid suction.
[0028] The construction structure based on the pressure relief of the post-cast strip of the basement floor slab also includes non-woven fabric, which is placed between the basement floor slab layer 2 and the gravel drainage layer 3.
[0029] It should be noted that, in this embodiment, the non-woven fabric serves as a sand-separating layer to separate the gravel backfill layer from the concrete of the top basement floor.
[0030] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. A construction structure based on pressure relief via post-cast strip in basement floor slab, characterized in that, The construction structure based on the pressure relief of the post-cast strip of the basement floor slab includes a basement waterproof layer, a gravel drainage layer, a drainage pipe, a pressure relief component, a basement floor slab, and a floor slab. The basement floor slab is laid between the floor slab and the underground waterproof layer, with the floor slab adhering to the top surface of the basement floor slab and the basement waterproof layer adhering to the bottom surface of the basement floor slab. A groove is provided in the middle of the top of the basement waterproof layer, and the gravel drainage layer is located in the groove. The drainage pipe is pre-embedded in the basement floor slab, with one end close to the floor slab and the other end inserted into the gravel drainage layer. The pressure relief component passes through the floor slab and is inserted into the basement floor slab, and is fixedly connected to the drainage pipe. The pressure relief component includes a ball valve, a connecting rod, and a rotating wheel; the ball valve is fixedly connected to the drain pipe; one end of the connecting rod is rotatably connected to the ball valve, and the other end is fixedly connected to the rotating wheel.
2. The construction structure based on the pressure relief of the post-cast strip in the basement floor slab according to claim 1, characterized in that, The drainage pipe includes a first PVC pipe, a second PVC pipe, and a third PVC pipe; the first PVC pipe is horizontally installed in the middle of the basement floor slab; the second and third PVC pipes are both vertically installed in the basement floor slab, with one end of the second PVC pipe fixedly connected to one end of the first PVC pipe and the other end of the second PVC pipe close to the ground; one end of the third PVC pipe is fixedly connected to the other end of the first PVC pipe and the other end of the third PVC pipe is inserted into the gravel drainage layer.
3. The construction structure based on the pressure relief of the post-cast strip in the basement floor slab according to claim 2, characterized in that, The drain pipe also includes a first adapter and a second adapter. The first adapter is fixedly connected between one end of the first PVC pipe and one end of the second PVC pipe; the second adapter is fixedly connected between one end of the first PVC pipe and the other end of the third PVC pipe.
4. A construction structure based on pressure relief via post-cast strip in basement floor slab according to claim 2, characterized in that, The construction structure based on the pressure relief of the post-cast strip of the basement floor slab also includes crushed stone geotextile, which is wrapped around the other end of the third PVC pipe.
5. A construction structure based on pressure relief of post-cast strip in basement floor slab according to claim 4, characterized in that, The crushed stone geotextile has evenly distributed round holes, the diameter of which is between 5mm and 10mm.
6. The construction structure based on the pressure relief of the post-cast strip in the basement floor slab according to claim 1, characterized in that, The construction structure based on the pressure relief of the post-cast strip of the basement floor slab also includes non-woven fabric, which is placed between the basement floor slab layer and the gravel drainage layer.
7. A construction structure based on pressure relief of post-cast strip in basement floor slab according to claim 1, characterized in that, The crushed stone guide layer consists of graded crushed stone with a thickness of 8cm-12cm.
8. A construction structure based on pressure relief of post-cast strip in basement floor slab according to claim 7, characterized in that, The particle size range of the graded crushed stone is between 2.36 mm and 25 mm, and 50%-70% of the graded crushed stone has a particle size range between 2.36 mm and 9.5 mm.