Waterproof expansion joint structure for basement exterior wall
By installing expansion joints and vertical reinforcement bars in the basement exterior walls, the problem of water leakage caused by concrete shrinkage and temperature changes was solved, achieving both high-efficiency waterproofing and improved construction efficiency.
Patent Information
- Application Number
- CN202423154526.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Cracks in the basement exterior walls caused by concrete drying shrinkage and temperature changes lead to water leakage and seepage, affecting building safety and economic benefits.
Expansion joints are installed at intervals in the concrete walls of the basement, with expansion-type waterstops installed inside. Vertical reinforcement bars are installed on both sides of the expansion joints to ensure that the expansion-type waterstops do not deform or become unstable during the concrete pouring process, thus forming an integral structure.
It improves the waterproofing effect of basement exterior walls, reduces construction complexity, shortens the construction period, is suitable for various basement exterior walls, avoids water leakage and seepage, and ensures the durability and usability of the walls.
Smart Images
Figure CN223780885U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of waterproof structures for basement exterior walls, and particularly relates to an expansion joint structure for waterproofing basement exterior walls. Background Technology
[0002] There are many reasons for cracking in the concrete exterior walls of basements. The cracks are mainly caused by the drying shrinkage of concrete and temperature changes. In summary, the main factors are as follows: raw materials and mix proportions, excessive concrete slump, large temperature difference between the inside and outside of the wall, poor curing, etc. When cracks occur in the exterior walls of basements below the groundwater level, water leakage and seepage will occur, thus affecting the safety and use of the building structure.
[0003] Therefore, an expansion joint structure is needed to solve the problem of water leakage and seepage caused by the expansion and contraction of basement exterior walls, as well as the safety, building stability, and economic benefits issues arising from this problem. Summary of the Invention
[0004] This utility model provides an expansion joint structure for waterproofing basement exterior walls. This expansion joint structure involves setting expansion joints at intervals in the basement concrete wall, installing an expansion-type waterstop within each expansion joint, and placing vertical reinforcement bars on both sides of the expansion joint. The vertical reinforcement bars ensure that the expansion-type waterstop does not deform or become unstable during concrete pouring, allowing the expansion-type waterstop and the concrete wall to be poured as a whole. After the basement exterior wall concrete has fully shrunk and deformed, the waterproofing effect is excellent.
[0005] To solve the above-mentioned technical problems, this utility model provides an expansion joint structure for waterproofing basement exterior walls, comprising a concrete wall and vertically spaced expansion joints on the concrete wall. An integrally formed expansion-type waterstop is installed within the expansion joint. The expansion-type waterstop includes a vertical main body, inwardly folded portions on both sides of the vertical main body, outwardly folded portions at the end of the inwardly folded portions away from the vertical main body, and wings at the end of the outwardly folded portions away from the inwardly folded portions. Horizontal and vertical stress tendons are evenly distributed within the concrete wall. Vertical reinforcement is evenly distributed on both sides of the vertical main body within the concrete wall, and the vertical reinforcement is connected to the horizontal and vertical stress tendons.
[0006] Furthermore, the expansion-type waterstop is configured in an Ω shape.
[0007] Furthermore, the wing portion and the vertical main body portion are arranged in parallel.
[0008] Furthermore, a horizontal interrupted bar is provided between the adjacent horizontal stress tendons, and the port position of the horizontal interrupted bar corresponds to the expansion joint.
[0009] Furthermore, the width of the expansion-type waterstop is the same as the spacing between the vertical stress tendons on both sides of the concrete wall.
[0010] Furthermore, the expansion joint located outside the wing is filled with waterproof sealant.
[0011] Furthermore, the expansion joint interval is set to 20-30m.
[0012] The beneficial effects of this utility model are as follows:
[0013] 1. This utility model discloses an expansion joint structure for waterproofing basement exterior walls. It involves setting expansion joints at intervals in the basement concrete wall, installing an expansion-type waterstop within the expansion joint, and installing vertical reinforcement bars on both sides of the expansion joint. The vertical reinforcement bars ensure that the expansion-type waterstop does not deform or become unstable during concrete pouring, so that the expansion-type waterstop and the concrete wall are poured as a whole. After the basement exterior wall concrete has completely shrunk and deformed, the waterproofing effect is good.
[0014] 2. The expansion joint structure for waterproofing basement exterior walls of this utility model has the following advantages:
[0015] (1) The expansion-type waterstop is manufactured by the factory, which can ensure its processing quality and reduce the shortcomings of manual on-site processing;
[0016] (2) The expansion type waterstop is lightweight, easy to transport and fix, and saves complex installation processes such as welding and anchoring, which saves time and effort and improves efficiency.
[0017] (3) The expansion-type waterstop is Ω-shaped, which can greatly increase the waterproof effect;
[0018] (4) The concrete on both sides of the expansion-type waterstop can be poured at the same time. For the ultra-long basement exterior wall, the concrete pouring surface can be expanded by adding expansion cracks, which can greatly shorten the construction period of the basement exterior wall.
[0019] (5) It can be applied to the treatment of seepage prevention and expansion joints of various basement exterior walls, and is not affected by narrow working surface or insufficient operating space, and can be widely promoted and used.
[0020] (6) By treating the expansion cracks, the possibility of water leakage and seepage is avoided, which saves money and ensures the durability and usability of the wall.
[0021] (7) It can be applied to the treatment of expansion joints for waterproofing of various basement exterior walls. It is not affected by narrow working surfaces or insufficient operating space, and can be widely promoted and used. By treating expansion cracks, the possibility of water leakage and seepage is avoided. It can save money and ensure the durability and usability of the wall. Attached Figure Description
[0022] Figure 1 This is a pouring state diagram of an expansion joint structure for waterproofing basement exterior walls according to this utility model;
[0023] Figure 2 This utility model discloses a steel reinforcement distribution diagram in an expansion joint structure for waterproofing basement exterior walls.
[0024] Figure 3 This is a structural schematic diagram of an expansion joint structure for waterproofing basement exterior walls according to this utility model;
[0025] Figure 4 This is a schematic diagram of an expansion joint structure for waterproofing basement exterior walls, based on the present invention.
[0026] Reference numerals: 1. Expansion-type waterstop; 2. Vertical reinforced reinforcement; 3. Concrete wall; 4. Waterproof sealant; 5. Horizontal interrupted reinforcement; 6. Vertical stress reinforcement; 7. Horizontal stress reinforcement; 8. Expansion joint; 11. Vertical main body; 12. Inward fold; 13. Outward fold; 14. Wing. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0028] like Figure 1-4 This is a schematic diagram of an expansion joint structure for waterproofing basement exterior walls proposed in this utility model. The expansion joint structure for waterproofing basement exterior walls includes a concrete wall 3 and vertically spaced expansion joints 8 on the concrete wall 3. An integrally formed expansion-type waterstop 1 is provided in the expansion joint 8. The expansion-type waterstop 1 includes a vertical main body 11, inwardly folded portions 12 located on both sides of the vertical main body, an outwardly folded portion 13 located at the end of the inwardly folded portion away from the vertical main body, and a wing portion 14 located at the end of the outwardly folded portion away from the inwardly folded portion. Horizontal stress tendons 7 and vertical stress tendons 6 are evenly distributed in the concrete wall 3. Vertical reinforcement ribs 2 are evenly distributed on both sides of the vertical main body 11 in the concrete wall 3. The vertical reinforcement ribs 2 are connected to the horizontal stress tendons 7 and the vertical stress tendons 6.
[0029] In this embodiment, expansion joints 8 are set at intervals in the concrete wall 3 of the basement, and an expansion-type waterstop 1 is set in the expansion joint 8. Vertical reinforcement bars are set on both sides of the expansion joint 8. The vertical reinforcement bars ensure that the expansion-type waterstop does not deform or become unstable during the concrete pouring process, so that the expansion-type waterstop and the concrete wall are poured into a whole. After the concrete of the basement exterior wall has completely shrunk and deformed, the waterproofing effect is good.
[0030] In a preferred embodiment, the expandable waterstop 1 is configured as an Ω shape. The Ω-shaped structure of the expandable waterstop 1 can significantly increase the waterproofing effect of the expandable waterstop 1.
[0031] In the preferred embodiment, the wing 14 and the vertical main body 11 are arranged in parallel. This structure facilitates the installation and arrangement of the vertical reinforcement bars and can prevent the expansion waterstop from deforming during the concrete pouring process.
[0032] In a preferred embodiment, a horizontal interrupted bar 5 is provided between adjacent horizontal stress tendons 7, and the ends of the horizontal interrupted bars are positioned corresponding to the expansion joint 8. In this embodiment, this structure is beneficial for the stress of the wall to be relatively concentrated at the expansion joint, which is beneficial for improving the waterproof effect of the concrete wall 3.
[0033] In a preferred embodiment, the width of the expansion-type waterstop is the same as the spacing between the vertical stress tendons on both sides of the concrete wall, the width of the expansion-type waterstop is the same as the spacing between the vertical steel bars of the external wall, the thickness of the waterproof sealant is the same as the thickness of the steel bar protective layer, and the expansion-type waterstop is sealed on both sides of the inner and outer wall surfaces with waterproof sealant, which can improve the waterproofing effect.
[0034] In a preferred embodiment, the expansion joint 8 is filled with waterproof sealant 4 at the outer part of the wing 14. After the waterproof structure of this embodiment is finally completed, the construction structure at the expansion joint from the inside out is waterproof sealant - expansion-type waterstop - waterproof sealant, which better meets the waterproof requirements of the expansion joint.
[0035] In the preferred embodiment, the interval between expansion joints 8 is set to 20-30m. In this embodiment, an expansion-type waterstop is used as the dividing material for the expansion joint, which avoids cracking and leakage of the exterior wall due to concrete expansion and contraction. The waterstop is lightweight and easy to fix, and can be directly fixed to the horizontal reinforcement or formwork, saving welding, anchoring, etc. With the use of vertical waterstop, the concrete on both sides of the waterstop can be poured at the same time, reducing the construction interval time. For ultra-long basement exterior walls, an expansion joint can be set every 20m-30m along the wall.
[0036] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. An expansion joint structure for waterproofing basement exterior walls, characterized in that: The system includes a concrete wall and vertically spaced expansion joints on the concrete wall. An integrally formed expansion-type waterstop is installed within each expansion joint. The expansion-type waterstop includes a vertical main body, inwardly folded portions on both sides of the vertical main body, outwardly folded portions at the end of the inwardly folded portions away from the vertical main body, and wings at the end of the outwardly folded portions away from the inwardly folded portions. Horizontal and vertical stress tendons are evenly distributed within the concrete wall. Vertical reinforced reinforcement is evenly distributed on both sides of the vertical main body within the concrete wall, and the vertical reinforced reinforcement is connected to the horizontal and vertical stress tendons.
2. The expansion joint structure for waterproofing basement exterior walls according to claim 1, characterized in that: The expansion-type waterstop is configured in an Ω shape.
3. The expansion joint structure for waterproofing basement exterior walls according to claim 1, characterized in that: The wing and the vertical main body are arranged in parallel.
4. An expansion joint structure for waterproofing basement exterior walls according to any one of claims 1 to 3, characterized in that: A horizontal interrupted bar is provided between the adjacent horizontal stress tendons, and the end position of the horizontal interrupted bar is set corresponding to the expansion joint.
5. The expansion joint structure for waterproofing basement exterior walls according to claim 1, characterized in that: The width of the expansion-type waterstop is the same as the spacing between the vertical stress tendons on both sides of the concrete wall.
6. The expansion joint structure for waterproofing basement exterior walls according to claim 5, characterized in that: The expansion joint located outside the wing is filled with waterproof sealant.
7. The expansion joint structure for waterproofing basement exterior walls according to claim 1, characterized in that: The interval between expansion joints is set to 20-30m.