Bottom plate waterproof joint and structure
By adding an upper reinforcement layer and anti-seepage coating to the bottom plate, the cracking and leakage problems of the foundation base plate in areas with high groundwater levels are solved, and multiple waterproof protection of the bottom plate is realized, the stiffness and bearing capacity of the bottom plate are enhanced, and leakage and deformation are reduced.
Patent Information
- Application Number
- CN202421577088.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-07-05
AI Technical Summary
Due to the problem of cracking and leakage of foundation base plates in areas with high groundwater levels, existing sealing technology is difficult to effectively prevent the re-cracking and leakage of the base plates from being cracked and leaked in the long run.
Add an upper reinforcement layer to the bottom plate, including the upper reinforcement layer of steel bars and concrete, seal cracks, and install horizontal hole fillers in the vertical components, combining anti-seepage coating and external anti-seepage zone to form multiple waterproof measures to improve the stiffness and bearing capacity of the bottom plate.
Effectively reduce leakage of the bottom plate, enhance the overall stiffness and out-of-plane bending bearing capacity of the bottom plate, reduce deformation and cracking, and provide multiple waterproof protection.
Smart Images
Figure CN223135200U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of waterproofing, and particularly relates to a waterproof node and structure for a floor slab. Background Art
[0002] China is vigorously developing underground space. In areas with a relatively high groundwater level, cracking and leakage of the foundation floor slab are common phenomena. To address this problem, pressure grouting is usually carried out at the crack locations of the foundation floor slab to block the intrusion of groundwater. However, after the grouting, the floor slab often continues to crack and leak under the action of groundwater after a period of time. Content of the Utility Model
[0003] The utility model provides a waterproof node and structure for a floor slab, which solves the problem of continuous cracking and leakage after pressure grouting of the floor slab.
[0004] To achieve the above object, the utility model adopts the following technical solutions.
[0005] A waterproof node for a floor slab, the enhanced waterproof structure node for the floor slab includes a floor slab, an upper strengthening layer, a vertical member, and a crack; the upper strengthening layer includes upper strengthening layer steel bars and upper strengthening layer concrete; the upper strengthening layer steel bars include upper strengthening layer longitudinal bars and upper strengthening layer transverse bars; there is a crack in the floor slab; the upper strengthening layer concrete seals the crack. The vertical member has a horizontal hole; the ends of the upper strengthening layer steel bars extend into the horizontal hole; there is a filling material in the horizontal hole.
[0006] Preferably, the floor slab includes floor slab steel bars and floor slab concrete; the floor slab steel bars include floor slab longitudinal bars and floor slab transverse bars; the crack is filled with a sealing material; the joint surface between the floor slab and the upper strengthening layer is a rough surface; the inner surface of the horizontal hole is a rough surface.
[0007] Preferably, there is an anti-seepage coating between the floor slab and the upper strengthening layer, or there is an anti-seepage coating between the floor slab and the upper strengthening layer and there is an external anti-seepage area at the bottom side of the crack.
[0008] Preferably, the vertical member is an external wall, and the depth of the horizontal hole does not exceed 80% of the thickness of the external wall. The inner surface of the horizontal hole is coated with an anti-seepage material.
[0009] Preferably, the vertical member is an intermediate column or an internal wall, and the horizontal hole penetrates the vertical member; the upper strengthening layer steel bars are continuous in the horizontal hole.
[0010] Preferably, the vertical member is an intermediate column or an internal wall, and the horizontal hole does not penetrate the intermediate beam or the internal wall; the upper strengthening layer steel bars are discontinuous in the horizontal hole.
[0011] An enhanced waterproof structure for a floor slab, at least two sides of the upper strengthening layer steel bars are fixedly connected to the wall of the vertical member.
[0012] Preferably, the upper strengthening layer longitudinal bars and the upper strengthening layer transverse bars are in two layers, and are arranged at intervals for each layer.
[0013] Preferably, there is a drainage layer on the upper surface of the upper strengthening layer, and the building surface layer is on the drainage layer.
[0014] Compared with the prior art, the utility model has the following characteristics and beneficial effects.
[0015] 1. Provide a waterproof node for the bottom slab with an upper strengthening layer to reduce the leakage of the bottom slab.
[0016] 2. Add an anti-seepage coating on the bottom slab and / or an external anti-seepage area to form multiple enhanced waterproof measures and reduce leakage.
[0017] 3. Provide a waterproof structure for the bottom slab with an upper strengthening layer to increase the overall stiffness and out-of-plane bending bearing capacity of the bottom slab, and reduce the deformation, cracking and leakage of the bottom slab.
[0018] 4. Set an upper drainage layer to provide a weight load and reduce the deformation and cracking caused by water buoyancy. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The following further describes the present utility model in detail with reference to the drawings.
[0020] Figure 1 Schematic cross-section of the waterproof node of the bottom slab Figure 1
[0021] Figure 2 Schematic cross-section of the waterproof node of the bottom slab Figure 2
[0022] Figure 3 Schematic cross-section of the waterproof node of the bottom slab Figure 3
[0023] Figure 4 Schematic cross-section of the enhanced waterproof structure of the bottom slab Figure 4
[0024] Figure 5 Schematic cross-section of the enhanced waterproof structure of the bottom slab Figure 5
[0025] Reference numerals: A - basement bottom slab, B - upper strengthening layer, 1 - bottom slab reinforcement, 1.1 - bottom slab longitudinal reinforcement, 1.2 - bottom slab transverse reinforcement, 2 - bottom slab concrete, 3 - crack, 4 - filler, 5 - upper strengthening layer reinforcement, 5.1 - upper strengthening layer longitudinal reinforcement, 5.2 - upper strengthening layer transverse reinforcement, 6 - upper strengthening layer sealing material, 7 - transverse hole, 8 - filler, 9 - anti-seepage coating, 10 - external anti-seepage area DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] In order to better understand the purpose, technical solution and functions of the present utility model, the following further describes the present utility model in detail with reference to the drawings. Herein, the illustrative embodiments of the present utility model and their descriptions are used to explain the present utility model, but not to limit the present utility model.
[0027] In the description of the present utility model, it is to be understood that the terms "include / comprise", "consist of..." or any other variations thereof are intended to cover non-exclusive inclusion, so that a product, device, process or method including a series of elements includes not only those elements, but also other elements not explicitly listed when necessary, or also includes elements inherent to such product, device, process or method. In the absence of further restrictions, the elements defined by the phrases "include / comprise..." or "consist of..." do not exclude the presence of other identical elements in the product, device, process or method including the elements.
[0028] In the present utility model, unless otherwise clearly specified and limited, the term "fixed connection" should be understood in a broad sense, for example: it can be a sleeve connection, a lap joint, a welding connection, a bolt connection, or a combination of the above connections; the terms "installation", "connection", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components; the term "through-length steel bar" means that the steel bar is continuous without disconnection, or the steel bar is disconnected but the disconnected steel bars are fixedly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0029] The following is a detailed description of the implementation of the present invention using preferred implementation methods in conjunction with the accompanying drawings.
[0030] To achieve the above purpose, the utility model adopts the following technical solutions.
[0031] like Figure 1 As shown, a bottom plate waterproof node, a reinforced bottom plate waterproof structure node includes a bottom plate A, an upper reinforcement layer B, a vertical member C and a crack 3, the bottom plate A includes a bottom plate steel bar 1 and a bottom plate concrete 2, the bottom plate steel bar 1 includes a bottom plate longitudinal bar 1.1 and a bottom plate transverse bar 1.2, the upper reinforcement layer B includes an upper reinforcement layer steel bar 5 and an upper reinforcement layer concrete 6, the upper reinforcement layer steel bar 5 includes an upper reinforcement layer longitudinal bar 5.1 and an upper reinforcement layer transverse bar 5.2, the crack 3 is located in the bottom plate A, and the upper reinforcement layer concrete 6 blocks the crack 3; the vertical member C has a transverse hole 7, the end of the upper reinforcement layer steel bar 5 extends into the transverse hole 7, and the transverse hole 7 has a filling material 8.
[0032] Under the action of groundwater, cracking and leakage of the foundation slab are common phenomena. The inventor of the present utility model found that one of the main reasons for leakage is that existing plugging technologies usually only plug the cracks. Under the action of water pressure, the out-of-plane stiffness or out-of-plane bearing capacity of the slab may be insufficient, resulting in cracking. For such cracks, it is difficult to achieve results simply by using traditional grouting plugging. After a period of time, it usually cracks again. The present utility model adds a strengthening layer on the upper part of the slab, and there are steel bars in the strengthening layer to form a reinforced concrete structural layer. The strengthening layer increases the stiffness and bearing capacity of the slab, and at the same time adds an anti-seepage defense line to improve its anti-cracking and anti-seepage performance.
[0033] During specific implementation, the thickness of the upper strengthening layer should not be less than 40 mm, preferably greater than 80 mm, and can be 80 mm to 800 mm, and preferably greater than 8% of the thickness of the slab. The upper strengthening layer is made of concrete and has a certain self-weight, which can offset part of the deformation and cracking caused by the water buoyancy.
[0034] During specific implementation, as Figure 2 shown, the crack 3 is filled with a plugging material 4. The joint surface between the slab A and the upper strengthening layer B is a rough surface, and the inner surface of the transverse hole 7 is a rough surface. Function: Plug the cracks in the original slab to reduce its leakage path; adopt a rough surface to make the newly created strengthening layer and the original slab form an integral body, improve the shear resistance of its joint surface, increase the overall stiffness and bearing capacity, and reduce cracking and leakage. The inner surface is a rough surface to improve the anchoring effect of the steel bars in the strengthening layer.
[0035] During specific implementation, as Figure 3 shown, there is an anti-seepage coating 9 between the slab A and the upper strengthening layer B, and there is an outer anti-seepage area 10 outside the crack 3. Function: Form multiple waterproof barriers.
[0036] During specific implementation, there is only an anti-seepage coating 9 between the slab A and the upper strengthening layer B. The anti-seepage coating should be 0.1 mm to 2 mm, and the thickness does not exceed 3 mm. It is composed of inorganic anti-seepage materials, organic anti-seepage materials, or anti-seepage materials combined with organic and inorganic materials; among them, the anti-seepage material has a certain strength, and its strength is not less than 25% of the strength of the filler in the strengthening layer. Function: It can prevent seepage and transfer shear force at the same time. When the slab leaks, the water pressure is often relatively large, so more effective waterproof strengthening measures are adopted.
[0037] During specific implementation, for the waterproof node of the slab, the vertical member C is an exterior wall, and the depth of the transverse hole 7 does not exceed 80% of the thickness of the exterior wall. The inner surface of the transverse hole 7 is coated with an anti-seepage material. Function: Prevent water from seeping in from the exterior wall.
[0038] During specific implementation, for the waterproof node of the slab, the vertical member C is an intermediate column or an interior wall, and the transverse hole 7 penetrates the vertical member C; the steel bars in the upper strengthening layer are continuous in the transverse hole 7. When waterproof treatment is required for the slabs on both sides of the intermediate column / wall, this solution reduces the anchoring, the steel bars in the strengthening layer are continuous, improves its force transfer effect, and increases its out-of-plane bearing capacity and stiffness.
[0039] In specific implementation, the vertical member C is an intermediate column or an interior wall, and the transverse hole 7 does not penetrate the intermediate column or the interior wall; the upper strengthening layer steel bars are disconnected at the transverse hole 7. Function: When waterproof treatment is required for the bottom slab on one side of the intermediate column / interior wall, this solution reduces the amount of reinforcement work and improves its out-of-plane bearing capacity and stiffness.
[0040] In specific implementation, at least two sides of the upper strengthening layer steel bars 5 are fixedly connected to the wall of the vertical member C to form a strengthened bottom slab waterproof structure. The specific implementation method is that two opposite sides are fixedly connected to the wall, or three sides are fixedly connected to the wall, or four sides are fixedly connected to the wall. Function: Improve the out-of-plane stiffness and bearing capacity of the bottom slab, reduce cracking, and improve the anti-leakage performance.
[0041] In specific implementation, the upper strengthening layer longitudinal bars 5.1 and the upper strengthening layer transverse bars 5.2 are two layers, and are arranged at intervals for each layer. Function: Further improve the out-of-plane stiffness and bearing capacity of the bottom slab, reduce cracking, and improve the anti-leakage performance.
[0042] In specific implementation, there is a drainage layer on the upper surface of the upper strengthening layer B, and a building surface layer is on the drainage layer. The drainage layer is composed of crushed stones, crushed concrete blocks, crushed cement mortar blocks, etc. The pores can drain water, and at the same time, the self-weight is used to balance the water buoyancy, reducing the deformation and cracking of the bottom slab. The thickness of the drainage layer is not less than 80 mm. The building surface layer can provide self-weight, reduce the dampness in the basement, and at the same time, use the self-weight to balance the water buoyancy, reducing the deformation and cracking of the bottom slab.
[0043] The above embodiments only represent several implementation manners of this patent. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of this patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of this utility model, several deformations and improvements can still be made, and these all belong to the protection scope of this utility model. Therefore, the protection scope of this utility model patent shall be subject to the appended claims.
Claims
1. A waterproof joint of the bottom plate, characterized in that: The floor slab waterproof joint includes a floor slab (A), an upper strengthening layer (B), and a vertical member (C); the upper strengthening layer (B) includes upper strengthening layer steel bars (5) and upper strengthening layer concrete (6); the upper strengthening layer steel bars (5) include upper strengthening layer longitudinal bars (5.1) and upper strengthening layer transverse bars (5.2); the floor slab (A) has cracks (3); the upper strengthening layer concrete (6) seals the cracks (3); the vertical member (C) has a horizontal hole (7); the ends of the upper strengthening layer steel bars (5) extend into the horizontal hole (7); and there is a filling material (8) in the horizontal hole (7).
2. The floor waterproofing joint according to claim 1, characterized in that: The floor slab (A) includes floor slab steel bars (1) and floor slab concrete (2); the floor slab steel bars (1) include floor slab longitudinal bars (1.1) and floor slab transverse bars (1.2); the cracks (3) are filled with a sealing material (4); the joint surface between the floor slab (A) and the upper strengthening layer (B) is a rough surface; and the inner surface of the horizontal hole (7) is a rough surface.
3. The floor waterproofing joint according to claim 1, wherein: There is a waterproof coating (9) between the floor slab (A) and the upper strengthening layer (B), or there is a waterproof coating (9) between the floor slab (A) and the upper strengthening layer (B) and there is an external waterproof area (10) at the bottom side of the cracks (3).
4. The floor waterproofing joint according to claim 1, characterized in that: The vertical member (C) is an external wall, and the depth of the horizontal hole (7) does not exceed 80% of the thickness of the external wall; and the inner surface of the horizontal hole (7) is coated with a waterproof material.
5. The floor slab waterproofing joint according to claim 1, characterized in that: The vertical member (C) is an intermediate column or an internal wall, the horizontal hole (7) penetrates through the vertical member (C); and the upper strengthening layer steel bars are continuous in the horizontal hole (7).
6. The waterproof joint of the bottom plate according to claim 1, characterized in that: The vertical member (C) is an intermediate column or an internal wall, the horizontal hole (7) does not penetrate through the intermediate column or the internal wall; and the upper strengthening layer steel bars are disconnected in the horizontal hole (7).
7. An enhanced waterproof structure for the bottom plate, characterized in that: Including the floor slab waterproof joint described in claim 1, at least two sides of the upper strengthening layer steel bars (5) are fixedly connected to the wall of the vertical member (C).
8. The enhanced bottom plate waterproof structure according to claim 7, characterized in that: The upper strengthening layer longitudinal bars (5.1) and the upper strengthening layer transverse bars (5.2) are in two layers, and are arranged at intervals in each layer.
9. The enhanced floor waterproof structure according to claim 7, characterized in that: There is a drainage layer on the upper part of the upper strengthening layer (B), and there is a building surface layer on the drainage layer.