Basement bottom plate post-pouring belt drainage structure
By installing semi-circular drainage pipe shells and waterproof membrane at the gaps, combined with an inspection chamber and suction pipe system, the problem of leakage in the post-cast strip of the basement floor slab was solved, achieving convenient drainage and maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG JINSHENG CONSTR CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, the gaps between the basement floor slab and the post-cast strip are prone to leakage, and the drainage system is difficult to construct, costly, and inconvenient to maintain.
A semi-circular drainage pipe shell is installed at the gap, and waterproof membrane is provided. Combined with an inspection room and suction pipe system, this enables regular drainage and maintenance of water in the basement.
It effectively prevents leakage through gaps, reduces construction difficulty and cost, facilitates maintenance, and ensures the long-term stability of the drainage system.
Smart Images
Figure CN224549175U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage structure for post-cast strips in basement slabs, and more specifically, to a drainage structure for post-cast strips in basement slabs. Background Technology
[0002] The basement floor slab and post-cast strip are an important part of the construction process, as they directly affect the functionality of the completed project. Therefore, the drainage treatment of the basement floor slab and post-cast strip is particularly important.
[0003] Currently, the main method for drainage treatment of basement floor slabs and post-cast strips is to add some water-stopping and waterproof structures to the post-cast strips to achieve a waterproof effect; however, problems such as easy leakage in the post-cast strips and water accumulation in the basement floor slabs still exist; these are all things that those skilled in the art do not want to see.
[0004] The invention, with publication number CN118756733A, relates to the field of building construction technology, and in particular to a drainage structure and construction method for a post-cast strip of a basement floor slab. The structure involves creating a drainage ditch on the upper surface of the basement floor slab that connects to a sump, and connecting multiple parallel drainage pipes between the joint between the post-cast strip and the basement floor slab and the drainage ditch near the joint. A gravel drainage layer and a plastic moisture-proof layer are then installed on top of the basement floor slab and the post-cast strip, thereby preventing water seepage from spreading on the basement floor slab and providing better drainage. This ensures the basement floor slab is waterproof, saving on material and labor costs associated with rework.
[0005] Since the post-cast strip and the basement floor slab are formed by post-casting, the gaps at their connection are prone to seepage. The aforementioned patent does not provide adequate waterproofing for the gaps, which can easily lead to leakage. Furthermore, the drainage system uses multiple horizontal and vertical pipes, which makes construction difficult and costly. The connection between the pipes and the drainage channels is dense and multi-point, making them prone to breakage and leakage during drainage, and making subsequent maintenance inconvenient. Utility Model Content
[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a drainage structure for the post-cast strip of the basement floor slab. This structure utilizes semi-circular drainage guide pipes installed at two gaps for drainage, with waterproof membrane installed at the bottom to prevent leakage at the gaps. During drainage, water is discharged externally. A pre-set inspection chamber allows water from the basement to be drained into a steel cylinder for periodic maintenance. The water is then pumped upwards through a suction pipe and discharged to the ground surface. Maintenance is convenient, and leakage during drainage is prevented.
[0007] To solve the above problems, the present invention adopts the following technical solution.
[0008] A drainage structure for a basement floor slab with a post-cast strip includes a basement and a rammed earth layer. A floor slab is formed on the surface of the rammed earth layer, and a post-cast strip is formed between the floor slabs. The surface of the rammed earth layer is covered with a first waterproof membrane. A cement partition strip is provided at the bottom of the gap between the floor slab and the post-cast strip. The surfaces of the floor slab and the post-cast strip are covered with a second waterproof membrane. A semi-circular drainage guide pipe shell is provided on the upper inner surface of the gap between the floor slab and the post-cast strip. A drain is fixed on one side of the semi-circular drainage guide pipe shell. A pipe is installed, and an inspection room is set up on one side of the basement. A steel cylinder is buried at the bottom of the inspection room, and the discharge pipe extends to the inside of the steel cylinder. A water suction pipe is fixedly installed on the inner surface of the steel cylinder. Drainage is carried out by setting semi-circular drainage guide shells at two gaps. The bottom is covered with waterproof membrane to prevent leakage at the gaps. When draining, the water is discharged to the outside. The inspection room can drain water from the basement into the steel cylinder. The room is maintained regularly, and the water is then pumped up to the ground surface through the suction pipe. Maintenance is convenient and leakage will not occur during drainage.
[0009] Furthermore, a baffle is placed on the inner surface of the semi-circular drainage guide pipe shell, and a strip-shaped water inlet is opened on the surface of the baffle.
[0010] Furthermore, the baffles are evenly distributed and installed on the inner surface of the semi-circular drainage guide pipe shell, and the inner side of the semi-circular drainage guide pipe shell is provided with a convex edge, and the baffles are placed on the surface of the inner convex edge of the semi-circular drainage guide pipe shell.
[0011] Furthermore, a baffle plate is fixedly connected to the inner surface of the steel cylinder, and the surface of the baffle plate is covered with a sand and gravel filter layer (the sand and gravel filter layer is usually composed of multiple layers of sand and gravel with different particle sizes. When water flows through, larger particles are intercepted by the coarser sand and gravel in the upper layer, while finer particles are adsorbed by the finer sand and gravel in the lower layer).
[0012] Furthermore, the first waterproof membrane covers the surface of the cement partition strip.
[0013] Furthermore, the semi-circular drainage guide pipe shell is made of stainless steel.
[0014] Furthermore, the water pumping pipe is fixedly connected to the inner surface of the barrier plate, and extends to the bottom of the steel cylinder.
[0015] Compared with existing technologies, the advantages of this utility model are:
[0016] (1) Drainage is carried out by setting semi-circular drainage diversion pipe shells at two gaps, and waterproof membrane is installed at the bottom to prevent leakage at the gaps. When draining, the water is discharged to the outside. An inspection room is set up so that the water in the basement can be discharged into the steel cylinder. The room is regularly maintained, and then the water is pumped up through the suction pipe to the ground surface. Maintenance is convenient and there will be no leakage when draining. Attached Figure Description
[0017] Figure 1 This is a schematic cross-sectional view of the overall structural distribution of this utility model;
[0018] Figure 2 This is a side view of the overall structural distribution of this utility model;
[0019] Figure 3 This is a schematic diagram showing the distribution relationship between the semi-circular drainage guide pipe shell and the baffle plate of this utility model.
[0020] Figure 4 This is a partial structural diagram of the semi-circular drainage guide pipe shell of this utility model;
[0021] Figure 5 This is an enlarged view of section A of this utility model.
[0022] Explanation of the labels in the diagram:
[0023] 1. Basement; 2. Basement rammed earth layer; 30. Post-pouring strip; 4. First waterproof membrane; 6. Second waterproof membrane; 7. Semi-circular drainage diversion pipe shell; 9. Discharge pipe; 100. Inspection room; 10. Steel cylinder; 11. Pumping pipe; 8. Barrier plate; 80. Strip water inlet; 70. Raised edge; 12. Mesh barrier plate; 13. Sand and gravel filter layer. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Example 1
[0026] Please see Figure 1-5A drainage structure for a basement floor slab with a post-cast strip includes a basement 1, a rammed earth layer 2, a floor slab 3 on the surface of the rammed earth layer 2, a post-cast strip 30 between the floor slabs 3, a first waterproof membrane 4 covering the surface of the rammed earth layer 2, a cement partition strip 5 at the bottom of the gap between the floor slab 3 and the post-cast strip 30, a second waterproof membrane 6 covering the surface of the floor slab 3 and the post-cast strip 30, and a semi-circular drainage guide pipe shell 7 on the upper inner surface of the gap between the floor slab 3 and the post-cast strip 30, with a drain fixed on one side of the semi-circular drainage guide pipe shell 7. Pipe 9 is installed, and an inspection room 100 is set on one side of the basement 1. A steel cylinder 10 is buried at the bottom of the inspection room 100. The discharge pipe 9 extends to the inside of the steel cylinder 10, and a water pumping pipe 11 is fixedly installed on the inner surface of the steel cylinder 10. Drainage is carried out by setting semi-circular drainage guide shells at two gaps. The bottom is covered with waterproof membrane to prevent leakage at the gaps. When draining, the water is discharged to the outside. The inspection room can be pre-set so that the water in the basement can be discharged into the steel cylinder. The room is maintained regularly, and then the water is pumped up through the suction pipe to the ground surface. Maintenance is convenient and there will be no leakage when draining.
[0027] A baffle plate 8 is placed on the inner surface of the semi-circular drainage guide pipe shell 7, and a strip-shaped water inlet 80 is opened on the surface of the baffle plate 8. When in use, water can be introduced through the strip-shaped air inlet 80 on the surface of the baffle plate 8, which can block large debris.
[0028] The baffles 8 are evenly distributed and installed on the inner surface of the semi-circular drainage guide pipe shell 7. The inner side of the semi-circular drainage guide pipe shell 7 is provided with a protruding edge 70, and the baffles 8 are placed on the surface of the inner protruding edge 70 of the semi-circular drainage guide pipe shell 7; this makes it easy for the baffles 8 to be snapped into the surface of the protruding edge 70 for positioning, and its placement is stable.
[0029] A baffle plate 12 is fixedly connected to the inner surface of the steel cylinder 10. The surface of the baffle plate 12 is covered with a sand and gravel filter layer 13 (the sand and gravel filter layer is usually composed of multiple layers of sand and gravel with different particle sizes. When water flows through, larger particles are intercepted by the coarser sand and gravel in the upper layer, while finer particles are adsorbed by the finer sand and gravel in the lower layer). This is used to filter some impurities through the sand and gravel filter layer 13 when water is entering.
[0030] The first waterproof membrane 4 covers the surface of the cement partition strip 5; it can waterproof and seal the bottom gap between the base slab layer 3 and the post-pouring strip 30 to prevent upward leakage.
[0031] The semi-circular drainage guide pipe shell 7 is made of stainless steel; it is corrosion-resistant and durable.
[0032] The water pumping pipe 11 is fixedly connected to the inner surface of the barrier plate 12, and the water pumping pipe 11 extends to the bottom of the steel cylinder 10; it can extend to the bottom for suction, which facilitates the suction of water flowing into the steel cylinder 10.
[0033] In use, a base slab layer 3 is set on the surface of the rammed earth layer 2 of the basement, and a post-pouring strip 30 is set between the base slab layers 3. The surface of the rammed earth layer 2 of the basement is covered with a first waterproof membrane 4. A cement partition strip 5 is set at the bottom of the gap between the base slab layer 3 and the post-pouring strip 30, and the first waterproof membrane 4 covers the surface of the cement partition strip 5. This can waterproof and seal the bottom gap between the base slab layer 3 and the post-pouring strip 30 to prevent upward leakage. The surface of the base slab layer 3 and the post-pouring strip 30 is covered with a second waterproof membrane 6, which can seal and waterproof the gaps on the surface to prevent leakage. A semi-circular drainage guide pipe shell 7 is set on the upper inner surface of the gap between the base slab layer 3 and the post-pouring strip 30. A discharge pipe 9 is fixed on one side of the semi-circular drainage guide pipe shell 7, and the basement 1 is located on one side. An inspection chamber 100 is provided, with a steel cylinder 10 buried at the bottom. A discharge pipe 9 extends to the inside of the steel cylinder 10, and a water suction pipe 11 is fixedly installed on the inner surface of the steel cylinder 10. When draining water, it can be introduced into the discharge pipe 9 through a semi-circular drainage guide pipe shell 7, and water is introduced into the steel cylinder 10 through the discharge pipe 9. The water suction pipe 11 extends upward to the ground surface, and a suction pump installed on the ground surface is used for suction. The suction pump is existing technology and can suck and discharge the water stored in the steel cylinder 10. The inspection chamber 100 is set up separately for inspection and maintenance, which is convenient and easy to use. A baffle plate 12 is fixedly connected to the inner surface of the steel cylinder 10, and the surface of the baffle plate 12 is covered with a sand and gravel filter layer 13. When water enters, some impurities can be filtered through the sand and gravel filter layer 13.
[0034] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A drainage structure for a post-cast strip in a basement floor slab, comprising a basement (1) and a rammed earth layer of the basement (2), characterized in that: The rammed earth layer (2) of the basement is provided with a base slab layer (3), and a post-pouring strip (30) is provided between the base slab layers (3). The surface of the rammed earth layer (2) of the basement is covered with a first waterproof membrane (4). A cement partition strip (5) is provided at the bottom of the gap between the base slab layer (3) and the post-pouring strip (30). The surface of the base slab layer (3) and the post-pouring strip (30) is covered with a second waterproof membrane (6). A semi-circular drainage guide pipe shell (7) is provided on the upper inner surface of the gap between the base slab layer (3) and the post-pouring strip (30). A discharge pipe (9) is fixed on one side of the semi-circular drainage guide pipe shell (7). An inspection room (100) is provided on one side of the basement (1). A steel cylinder (10) is buried at the bottom of the inspection room (100). The discharge pipe (9) extends to the inside of the steel cylinder (10). A water pumping pipe (11) is fixed on the inner surface of the steel cylinder (10).
2. The drainage structure of the post-cast strip in the basement floor slab according to claim 1, characterized in that: A baffle plate (8) is placed on the inner surface of the semi-circular drainage guide pipe shell (7), and a strip-shaped water inlet (80) is opened on the surface of the baffle plate (8).
3. The drainage structure of the post-cast strip in the basement floor slab according to claim 2, characterized in that: The baffles (8) are evenly distributed and installed on the inner surface of the semi-circular drainage guide pipe shell (7). The inner side of the semi-circular drainage guide pipe shell (7) is provided with a protruding edge (70), and the baffles (8) are placed on the surface of the inner protruding edge (70) of the semi-circular drainage guide pipe shell (7).
4. The drainage structure of the post-cast strip in the basement floor slab according to claim 1, characterized in that: A mesh plate (12) is fixedly connected to the inner surface of the steel cylinder (10), and the surface of the mesh plate (12) is covered with a sand and gravel filter layer (13).
5. The drainage structure of the post-cast strip in the basement floor slab according to claim 1, characterized in that: The first waterproof membrane (4) covers the surface of the cement partition strip (5).
6. The drainage structure of the post-cast strip in the basement floor slab according to claim 1, characterized in that: The semi-circular drainage guide pipe shell (7) is made of stainless steel.
7. A drainage structure for post-cast strips in basement floor slabs according to claim 4, characterized in that: The water pumping pipe (11) is fixedly connected to the inner surface of the barrier plate (12), and the water pumping pipe (11) extends to the bottom of the steel cylinder (10).