Basement ground drainage structure
By using non-metallic or corrosion-resistant metal materials to make drainage pipes, combined with permeable filter layers and isolation layers, the problem of metal corrosion and expansion is solved, ensuring the unobstructed flow and durability of drainage channels and improving the waterproofing effect of underground structures.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA HUASHI ENTERPRISES CO LTD (SICHUAN)
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-12
AI Technical Summary
Metal components in existing underground drainage channels are prone to corrosion and expansion, which can damage the structural integrity of the drainage channels and affect their waterproofing effect and durability.
The drainage pipe is made of non-metallic or corrosion-resistant metallic materials, and a permeable filter layer is wrapped around the outside of the drainage pipe. A water-conducting filling layer is filled in, and an isolation layer is laid on top of it to form a drainage channel to prevent rust and blockage.
It effectively prevents structural damage to drainage pipes caused by corrosion and expansion, maintains the unobstructed flow and durability of drainage channels, and improves the waterproof performance of underground structures.
Smart Images
Figure CN224227945U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering technology, specifically to a basement floor drainage structure. Background Technology
[0002] In construction projects, underground structures such as basements are often exposed to groundwater or other water sources, making their foundations, walls, and other parts, especially weak points like construction joints and post-cast strips, susceptible to water leakage. To effectively prevent and resolve leakage problems in underground structures and ensure their safety and functionality, it is usually necessary to pre-install drainage systems or implement drainage measures in these critical areas.
[0003] Currently, drainage channels are installed within underground structures to collect water that may seep into the structure and guide it in an organized manner to designated locations such as collection wells for discharge. However, some existing drainage channel designs and constructions may use or be adjacent to components containing metal materials, such as using the structural steel reinforcement as a fixing support, or the drainage channel itself containing metal components.
[0004] In damp underground environments, these metal components, whether existing structural steel reinforcement or newly added metal parts to the drainage system, are prone to corrosion. After corrosion, the volume of the corroded material usually expands significantly. This expansion force may compress and damage the surrounding concrete structure or the drainage channel itself. Over time, this may lead to damage to the structural integrity of the drainage channel, deformation and cracking, or even complete loss of its intended drainage function, thereby affecting the waterproofing effect and durability of the entire underground structure. Utility Model Content
[0005] The technical problem to be solved by this utility model is how to improve the durability and reliability of the pre-set drainage channels in underground structures and avoid functional failure caused by the corrosion and expansion of metal components. The purpose is to provide a drainage structure for basement floors that can more effectively prevent water seepage and dampness in basement floors, thereby improving the basement's usage environment and enhancing the overall quality and durability of the building.
[0006] This utility model is achieved through the following technical solution:
[0007] A basement floor drainage structure, comprising:
[0008] The basement floor slab has a drainage groove on its upper surface.
[0009] The basement floor layer covers the area on the upper surface of the basement floor slab where the drainage groove is not provided;
[0010] A hydrophobic channel is disposed within the hydrophobic groove, and the hydrophobic channel includes:
[0011] Drainage pipes; and
[0012] A water-conducting filling layer that fills the hydrophobic groove and is located around the hydrophobic tube.
[0013] Optionally, the hydrophobic tube is made of a non-metallic material or a corrosion-resistant metallic material;
[0014] The drainage pipe is provided with through-holes.
[0015] Optionally, the hydrophobic channel further includes a water-permeable filter layer wrapped around the periphery of the hydrophobic tube.
[0016] Optionally, an isolation layer is provided between the upper surface of the water-conducting filling layer and the basement floor layer.
[0017] Optionally, the drainage pipe is a corner plastic strip, which is fixed to the upper steel reinforcement of the basement floor slab at a set interval; the corner plastic strip is covered with a water-permeable non-woven fabric.
[0018] Optionally, the outer surface of the reinforcing bars in the hydrophobic groove is coated with anti-rust paint.
[0019] Optionally, the water-conducting filling layer is made of graded crushed stone with a suitable particle size.
[0020] Optionally, the drainage channel extends to a sump.
[0021] Optionally, a concrete retaining wall is provided between the drainage groove and the water collection pit, and the drainage pipe of the drainage channel extends into the water collection pit.
[0022] Optionally, a filter screen is provided at the inlet where the drainage pipe flows into the water collection pit.
[0023] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0024] This invention utilizes non-metallic materials or metallic materials with excellent corrosion resistance to fabricate the drainage pipes, fundamentally avoiding the problem of the drainage pipes themselves expanding and cracking due to metal corrosion. By wrapping the drainage pipes with a permeable filter layer, it effectively prevents impurities such as mud and sand from entering the drainage pipes and causing blockages, ensuring smooth water flow and maintaining drainage efficiency. By filling the drainage grooves with a highly permeable water-conducting filling layer and laying an isolation layer on top before constructing the basement floor, it not only provides an effective collection and diversion path for potential water leakage, but also prevents materials such as cement mortar from seeping into the water-conducting filling layer during floor construction, thus protecting the pore structure and water-conducting performance of the water-conducting filling layer and ensuring the continuous unobstructed flow of the drainage channels. Attached Figure Description
[0025] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and are included in and constitute a part of this specification, but do not constitute a limitation on the embodiments of the present invention.
[0026] Figure 1 This is a schematic diagram of a basement floor drainage structure according to the present invention.
[0027] Attached reference numerals: 1-Basement floor slab, 2-Basement ground floor, 3-Drainage groove, 4-Drainage pipe, 5-Water-conducting filling layer, 6-Permeable filter layer, 7-Isolation layer. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.
[0029] It should also be noted that, for ease of description, only the parts relevant to this utility model are shown in the accompanying drawings.
[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0032] Where there is no conflict, the embodiments and features of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0033] Example 1
[0034] like Figure 1 As shown, this embodiment constructs a concealed channel on the basement floor slab to collect and guide any potential water accumulation or seepage, thereby ensuring smooth drainage and structural durability. A basement floor drainage structure is provided, comprising: a basement floor slab 1, a basement floor 2, and a drainage channel.
[0035] A drainage groove 3 is provided on the upper surface of the basement floor slab 1; that is, a drainage groove 3 is pre-set or excavated on the upper surface of the basement floor slab 1 (i.e., the structural floor slab of the basement). The drainage groove 3 can also be reserved in the formwork above the construction joint (the post-pouring strip is actually two construction joints, which can be reserved as two independent construction joints respectively; or they can be combined into one groove, and drainage pipes 4 and top cover plates are laid separately according to the construction joint position later). The drainage groove 3 serves as the foundation of the entire drainage system and provides space for the subsequent installation of drainage channels.
[0036] The drainage channel is set in the drainage groove 3. The drainage channel includes a drainage pipe 4, a water-conducting filling layer 5, and a water-permeable filter layer 6.
[0037] As the main channel for water flow, the drainage pipe 4 has specific requirements in terms of material selection. It is made of non-metallic materials (such as engineering plastics) or corrosion-resistant metallic materials (such as stainless steel or metals with special anti-corrosion treatment) to prevent damage to the pipe body due to rust, thereby ensuring the long-term stable operation of the drainage system. In addition, the drainage pipe 4 has through-holes in its wall, which allow water from the surrounding area to permeate into the interior of the pipe body.
[0038] On the outer surface of the drainage pipe 4, a permeable filter layer 6 is wrapped. The permeable filter layer 6 is usually made of a material with good permeability and filtration function (such as non-woven geotextile). Its function is to allow water to pass through and enter the drainage pipe 4, while preventing fine particles such as mud and sand from entering and preventing pipe blockage.
[0039] Within the drainage groove 3, around the drainage pipe 4, a water-conducting filling layer 5 is filled. This filling layer is typically made of a material with a large porosity (such as graded crushed stone), and its function is to quickly collect water that seeps in or drips from the surrounding area and guide it to the drainage pipe 4.
[0040] On the upper surface of the water-conducting filling layer 5, there is an isolation layer 7. The isolation layer 7 is often made of materials such as geotextile. Its main function is to separate the upper floor material from the lower water-conducting filling layer 5, preventing cement mortar and other materials from seeping into the water-conducting filling layer 5 during floor construction and blocking its gaps, thereby ensuring the permeability of the water-conducting filling layer 5.
[0041] Finally, on the areas of the isolation layer 7 and the basement floor slab 1 where the drainage grooves 3 are not provided, the basement floor layer 2 (such as concrete, tiles, flooring, etc.) is laid, and the entire drainage structure is concealed under the ground, without affecting the normal use of the ground.
[0042] When water (such as groundwater seepage, condensation, or accidental water accumulation) appears near the basement floor slab, this moisture first seeps into the water-conducting filling layer 5 within the drainage groove 3. The water-conducting filling layer 5 quickly collects the moisture and directs it to the drainage pipe 4. The moisture passes through the permeable filter layer 6 wrapped around the outside of the drainage pipe 4 (this process filters out impurities) and enters the interior of the drainage pipe 4 through permeable holes in the pipe wall. Once the water enters the drainage pipe 4, it flows along the pipe and is eventually guided to a designated drainage location (such as a sump).
[0043] Example 2
[0044] This embodiment describes the specific form, fixing method, related auxiliary facilities, and connection method with other drainage facilities of the drainage pipe 4.
[0045] The drainage pipe 4 is a corner plastic strip, which is a relatively common product at present. That is, two plastic strips are connected at a certain angle. In this embodiment, the opening of the plastic strip is placed downward in the drainage groove 3, and it is best that the corner plastic strip is in contact with the ground of the drainage groove 3.
[0046] The corner plastic strips are fixed to the upper steel bars of the basement floor slab 1 at set intervals. The original upper steel bars in the basement floor slab structure are used as anchor points. The corner plastic strips are securely installed in the predetermined positions in the drainage grooves 3 by cable ties. At the same time, the corner plastic strips are wrapped with water-permeable non-woven fabric, which allows water to seep into the channels formed by the corner plastic strips and filters out larger impurities.
[0047] The outer surface of the reinforcing bars within the drainage groove 3 is coated with anti-rust paint, serving as a pretreatment for the existing reinforcing bars exposed or near the drainage environment within the drainage groove 3 (i.e., the "upper reinforcing bars" mentioned above used to fix the corner plastic strips). By applying anti-rust paint, the corrosion process of these reinforcing bars can be slowed down, thereby indirectly protecting the long-term stability of the entire drainage structure and the surrounding concrete.
[0048] The water-conducting filling layer 5 uses graded crushed stone with an appropriate particle size. Graded crushed stone refers to crushed stone material that has undergone specific screening and has a reasonable mix of particle sizes. Using this material as the water-conducting filling layer 5 can ensure that the filling layer has sufficient porosity to facilitate rapid water penetration and lateral guidance, while the interlocking between its particles can also provide a certain degree of structural stability.
[0049] The purpose of the entire drainage system is to drain the collected water. Therefore, the drainage channel extends to the sump, which is a common structure in basement engineering used to collect and temporarily store water to be drained.
[0050] A concrete retaining wall is installed between the drainage groove 3 and the collection pit, and the drainage pipe 4 of the drainage channel extends into the collection pit. At the end of the drainage channel and before entering the collection pit, a low concrete wall is usually built as a separation and guide, and the corner plastic strip itself passes through this retaining wall or goes around it from above / side, eventually draining the water it collects into the collection pit.
[0051] To prevent larger debris from entering the sump or clogging subsequent drainage equipment, a filter screen is installed at the inlet of the drainage pipe 4 where it flows into the sump.
[0052] Example 3
[0053] From a structural stress perspective, reinforced concrete slabs primarily rely on steel reinforcement to withstand tensile forces and on concrete to withstand compressive forces. Creating grooves in the upper part of the slab objectively reduces the concrete cross-section in that area, thus theoretically affecting the compressive strength of the upper region of the slab to some extent.
[0054] However, in actual engineering projects, locations such as post-cast strips and construction joints are often tension zones rather than primary compression zones on the upper part of the base slab, depending on the structural design characteristics. This means that while setting up drainage grooves 3 in these typically tension zones locally reduces the amount of concrete, the impact on the overall load-bearing performance of the entire base slab system is relatively small because these areas do not primarily bear compressive loads.
[0055] Taking into account the minimal impact of this design on the structural stress, its benefits in terms of effective drainage, prevention of leakage risks, and improved structural durability, it has significant advantages in terms of economic and social benefits.
[0056] The specific construction steps are as follows:
[0057] (1) Reserved drainage groove 3:
[0058] When constructing the basement floor slab structure, especially in the area above the planned construction joint, the drainage channel groove required by the design is reserved by locally using suspended formwork.
[0059] For the post-pouring strip (which can essentially be regarded as two construction joints), there are two ways to handle it: it can be treated as two independent construction joints with pre-reserved grooves; or the areas of the two construction joints can be merged into a unified groove. However, when laying the drainage pipe 4 and the top cover plate later, it is still necessary to treat them separately according to the original construction joint position.
[0060] The reserved grooves need to be directed to nearby sump pits according to the area plan to facilitate drainage.
[0061] When pouring concrete in the groove area, the pouring height should be controlled, and the concrete should only be poured to a certain distance below the upper reinforcing bars in the area to ensure that sufficient operating space is reserved so that the reinforcing bars in the groove can be coated with anti-rust paint later.
[0062] (2) Installation of drainage facilities and filling:
[0063] After the structural concrete on both sides of the construction joint is poured and before the upper floor layer is constructed, the drainage pipe 4 is continuously laid along the direction of the drainage groove 3. This drainage pipe 4 uses corner plastic strips wrapped with permeable non-woven fabric on the outside as a channel for pressurized water seepage.
[0064] Use cable ties to fix the laid corner plastic strips to the upper steel bars of the base slab structure at certain intervals.
[0065] Next, use appropriately sized graded crushed stone to fill the remaining space around the corner plastic strip in the hydrophobic groove 3 until it is compacted.
[0066] At the end of the drainage channel leading to the sump, a filter screen or other structure needs to be installed. The purpose of this structure is to ensure that water can flow smoothly into the sump while sealing off the end of the channel.
[0067] (3) Treatment of the sump joint:
[0068] At the connection point between the drainage channel and the sump, it is recommended to use a more durable concrete retaining wall structure. Only the corner plastic strip wrapped with non-woven fabric (i.e., drainage pipe 4) should extend into or pass through the retaining wall, ultimately draining the water into the sump.
[0069] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.
[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0071] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above-described invention, and these changes or modifications still fall within the scope of the present invention.
Claims
1. A basement floor drainage structure, characterized in that, include: The basement floor slab (1) has a drainage groove (3) on its upper surface. The basement floor layer (2) covers the area on the upper surface of the basement floor slab layer (1) where the drainage groove (3) is not provided; A hydrophobic channel is disposed within the hydrophobic groove (3), and the hydrophobic channel includes: Drainage pipe (4); as well as A water-conducting filling layer (5) is filled in the hydrophobic groove (3) and located around the hydrophobic tube (4).
2. The basement floor drainage structure according to claim 1, characterized in that, The drainage pipe (4) is made of non-metallic material or corrosion-resistant metallic material; The drainage pipe (4) is provided with a through-hole.
3. The basement floor drainage structure according to claim 1, characterized in that, The hydrophobic channel also includes a water-permeable filter layer (6) wrapped around the periphery of the hydrophobic tube (4).
4. The basement floor drainage structure according to claim 1, characterized in that, An isolation layer (7) is provided between the upper surface of the water-conducting filling layer (5) and the basement floor layer (2).
5. A basement floor drainage structure according to claim 1, characterized in that, The drainage pipe (4) is a corner plastic strip, which is fixed to the upper steel bar of the basement floor slab (1) at a set interval; the corner plastic strip is wrapped with a water-permeable non-woven fabric.
6. A basement floor drainage structure according to claim 5, characterized in that, The outer surface of the reinforcing bar in the hydrophobic groove (3) is coated with anti-rust paint.
7. A basement floor drainage structure according to claim 1, characterized in that, The water-conducting filling layer (5) is made of graded crushed stone with a suitable particle size.
8. The basement floor drainage structure according to claim 1, characterized in that, The drainage channel extends to the sump.
9. A basement floor drainage structure according to claim 8, characterized in that, A concrete retaining wall is provided between the drainage groove (3) and the water collection pit, and the drainage pipe (4) of the drainage channel extends into the water collection pit.
10. A basement floor drainage structure according to claim 8, characterized in that, A filter screen is provided at the inlet of the drainage pipe (4) into the water collection pit.