Reinforcing method for newly adding hole in vertical wall of constructed pool or pit
By adding reinforced mesh sleeves to the openings of the pool or vertical wall of the pit and pouring shrinkage grouting material, the problems of structural safety and waterproofness at the openings are solved, and better waterproofing effect and structural connection are achieved.
Patent Information
- Application Number
- CN202510225013.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-04-08
AI Technical Summary
When adding a larger opening or adding an original reserved opening to the vertical wall of a completed pool or pit that has been constructed, how to ensure structural safety and waterproofness?
Add reinforced mesh sleeves to the inner and outer sides of the newly added holes to make them firmly connected with the original vertical wall steel bars, and pour a shrink-free grouting material to extend the waterproof path and enhance structural connection.
It effectively solves the problem of connecting new and old concrete, extends the waterproof path, improves the safety and waterproof effect at the new holes, and is especially suitable for pools and pits that have strict waterproofing requirements.
Smart Images
Figure CN119777618A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a reinforcement method for adding a new hole on a vertical wall of a completed pool or pit, belonging to the technical field of engineering construction methods. Background Art
[0002] Whether in electrolytic aluminum, alumina or carbon process configuration, water storage, water treatment systems and underground transportation systems occupy an indispensable position. In water storage, water treatment and underground transportation systems, various functional pools and belt pits are generally reinforced concrete structures, which mainly rely on the compactness of the concrete structure itself to enhance the waterproof, anti-seepage and anti-freeze capabilities. The vertical walls of the pool and pit are usually pre-buried with waterproof casings and reserved openings according to the needs of the main professional. Therefore, when designing the pool and pit, the vertical wall must be reinforced in advance at the opening position and corresponding waterproof measures must be taken. However, during the construction of the pool and pit, due to design errors or construction omissions, or the need for equipment installation after the construction is completed, it is necessary to add large openings (D≥800mm) or enlarge the original reserved openings on the vertical walls of the pool and pit. Therefore, for the newly added large openings, how to do a good job of reinforcing the openings in the vertical wall has become the key to the safety and waterproofness of the structure itself. Summary of the invention
[0003] The purpose of the present invention is to provide a reinforcement method for a newly added hole on the vertical wall of a completed pool or pit. A steel mesh sleeve is added to the inner and outer sides of the newly opened hole in the vertical wall to firmly connect it with the original vertical wall steel bars, and then non-shrinkage grouting material is poured, which not only solves the connection problem between the new and old concrete, but also extends the waterproof path at the newly added hole, effectively ensuring the safety and waterproof requirements of the newly added hole on the completed vertical wall, and is particularly suitable for pools and pits with strict waterproofing requirements.
[0004] The technical solution of the present invention is a method for reinforcing a newly added hole on the vertical wall of a completed pool or pit, comprising the following steps: S1: When the radius of the newly added opening is R, first determine the center elevation of the newly added opening, then chisel away the concrete of the circular hole with a radius of R+350mm on the vertical wall to expose the original vertical wall steel bars, cut off the original vertical wall steel bars and bend them outwards; S2: Inner ring steel bars and outer ring steel bars are added to the inner and outer sides of the vertical wall outside the newly added opening, and connected together through radial stirrups. The inner ring steel bars, outer ring steel bars and radial stirrups are connected to the original vertical wall steel bars; S3: Add a double-layer orthogonal steel mesh inside and outside the vertical wall within a certain width and thickness range outside the newly added opening, and connect the additional double-layer orthogonal steel mesh with the original vertical wall steel bars and radial stirrups to form a reinforced concrete mesh sleeve. After the steel bars are firmly connected and the waterproof sleeve is installed, the connection between the new and old concrete is flushed and coated with an interface agent, and then non-shrinkage grouting material is poured; S4: After the concrete curing of the newly added part is completed and the concrete strength reaches the design requirements, backfill the soil and stone in time.
[0005] In the aforementioned reinforcement method for adding a new opening on the vertical wall of a completed pool or pit, in S2, inner annular steel bars, outer annular steel bars and radial stirrups are added inside and outside the vertical wall within a range of 300 mm wide and 200 mm thick outside the newly added opening, and the diameter and spacing of the added inner annular steel bars, outer annular steel bars and radial stirrups are the same as those of the original vertical wall steel bars.
[0006] In the aforementioned reinforcement method for a newly added opening on the vertical wall of a completed pool or pit, in S3, a double-layer orthogonal steel mesh is added inside and outside the vertical wall within a range of 800mm to 1000mm wide and 200mm thick outside the newly added opening. The additional double-layer orthogonal steel mesh is formed by vertical steel bars and transverse steel bars connected to each other, and the diameter and spacing of the vertical steel bars and the transverse steel bars are the same as those of the original vertical wall steel bars.
[0007] In the aforementioned reinforcement method for adding a new hole on the vertical wall of a completed pool or pit, in S3, an expansion agent should be added to the non-shrinkage grouting material.
[0008] Beneficial effects of the present invention: Compared with the prior art, the method of the present invention extends the waterproof path by adding a reinforced concrete mesh sleeve outside the newly added hole, and has a better waterproof effect; and the reinforced concrete mesh sleeve adopts an orthogonal steel mesh, so the construction is simpler whether it is the binding of steel bars, the connection with the original vertical wall steel bars, or the use of a rectangular template for pouring concrete. Furthermore, the use of non-shrinkage grouting material makes the connection between new and old concrete tighter.
[0009] In summary, the present invention adds reinforced concrete meshes on the inner and outer sides of the newly opened hole in the vertical wall to make it firmly connected with the original vertical wall steel bars, and then pours non-shrinkage grouting material, which not only solves the connection problem between new and old concrete, but also extends the waterproof path at the newly added hole, effectively ensuring the safety and waterproofing requirements of the newly added hole on the completed vertical wall, and is particularly suitable for pools and pits with strict requirements on waterproofing. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 Cross-sectional view of .
[0011] Figure numerals: 1-vertical wall, 2-reinforced concrete mesh, 3-original vertical wall steel bars, 4-inner annular steel bars, 5-outer annular steel bars, 6-radial stirrups, 7-vertical steel bars, 8-transverse steel bars. DETAILED DESCRIPTION
[0012] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.
[0013] An embodiment of the present invention: A reinforcement method for adding a new hole to a vertical wall of a completed pool or pit comprises the following steps: S1: When the radius of the newly added opening is R, first determine the center elevation of the newly added opening, then chisel away the concrete of the circular hole with a radius of R+350mm on the vertical wall 1 to expose the original vertical wall steel bars 3, and then cut the original vertical wall steel bars 3 from the middle position and bend them outwards; S2: Add inner ring steel bars 4 and outer ring steel bars 5 to the inner and outer sides of the vertical wall 1 with a width of 300 mm and a thickness of 200 mm outside the newly added opening. Figure 2 It can be seen that the annular reinforcement 4 and the outer annular reinforcement 5 are arranged in the annular space of the vertical wall 1 where the concrete is chiseled out (excluding the size of the newly added opening 9), and the annular reinforcement 4 and the outer annular reinforcement 5 are further extended 200mm outside the vertical wall 1, that is, the width of the reinforcement ring formed by the entire annular reinforcement 4 and the outer annular reinforcement 5 is 300mm, and the thickness is the thickness of the vertical wall 1 + 400mm. The inner annular reinforcement 4 and the outer annular reinforcement 5 are connected together by radial stirrups 6, and the inner annular reinforcement 4 and the outer annular reinforcement 5 and the radial stirrups 6 are tied or welded to the original vertical wall reinforcement 3; S3: Add double-layer orthogonal steel mesh inside and outside the vertical wall 1 within the range of 800mm~1000mm wide and 200mm thick outside the newly added opening, that is, take the diameter of the newly added opening 2R+(1600~2000)mm as the side length of the square, make a cube with a thickness of 200mm with the center of the newly added opening as the center, and arrange double-layer orthogonal steel mesh within the range of the cube (excluding the range of the newly added opening). The additional double-layer orthogonal steel mesh is formed by connecting vertical steel bars 7 and transverse steel bars 8 to each other. The diameter and spacing of the vertical steel bars 7 and transverse steel bars 8 are the same as the original vertical wall steel bars 3. The additional double-layer orthogonal steel mesh is tied or welded with the original vertical wall steel bars 3 and radial stirrups 6 to form a reinforced concrete mesh sleeve 2. After the steel bars are firmly connected and the waterproof sleeve is installed, the vertical wall surface at the connection between the new and old concrete is roughened, flushed and coated with interface agent, and then non-shrinkage grouting material is poured. Expansion agent should be added to the non-shrinkage grouting material to ensure full grouting. The newly poured concrete includes the concrete area where a circular hole with a radius of R+350mm is chiseled out on the vertical wall 1 and the concrete on both sides of the vertical wall 1. The concrete in the hole area and the concrete on both sides of the vertical wall 1 are poured as a whole to form a whole. S4: After the concrete curing of the newly added part is completed and the concrete strength reaches the design requirements, backfill the soil and stone in time.
Claims
1. A reinforcement method for adding a new opening to the vertical wall of a completed pool or pit, characterized in that: The following steps are included: S1: When the radius of the newly added opening is R, first determine the center elevation of the newly added opening, then chisel away the concrete of the circular hole with a radius of R+350 mm on the vertical wall (1) to expose the original vertical wall steel bars (3), and then cut off the original vertical wall steel bars (3) and bend them outwards; S2: additional inner annular steel bars (4) and outer annular steel bars (5) are added to the inner and outer sides of the vertical wall (1) outside the newly added opening, and connected together via radial stirrups (6); the inner annular steel bars (4) and the outer annular steel bars (5) as well as the radial stirrups (6) are connected to the original vertical wall steel bars (3); S3: Adding double-layer orthogonal steel mesh inside and outside the vertical wall (1) within a certain width and thickness range outside the newly added opening, connecting the additional double-layer orthogonal steel mesh with the original vertical wall steel bars (3) and radial stirrups (6) to form a reinforced concrete mesh sleeve (2), after the steel bars are firmly connected and the waterproof sleeve is installed, flushing the connection between the new and old concrete and applying an interface agent, and then pouring non-shrinkage grouting material; S4: After the concrete curing of the newly added part is completed and the concrete strength reaches the design requirements, backfill the soil and stone in time.
2. The reinforcement method for adding a new hole on the vertical wall of a completed pool or pit according to claim 1, characterized in that: In the above-mentioned S2, inner annular steel bars (4), outer annular steel bars (5) and radial stirrups (6) are added inside and outside the vertical wall (1) within a range of 300 mm wide and 200 mm thick outside the newly added opening. The diameter and spacing of the added inner annular steel bars (4), outer annular steel bars (5) and radial stirrups (6) are the same as those of the original vertical wall steel bars (3).
3. The reinforcement method for adding a new hole on the vertical wall of a completed pool or pit according to claim 1, characterized in that: In the S3, a double-layer orthogonal steel mesh is added inside and outside the vertical wall (1) within a range of 800 mm to 1000 mm wide and 200 mm thick outside the newly added opening. The additional double-layer orthogonal steel mesh is formed by vertical steel bars (7) and transverse steel bars (8) connected to each other. The diameter and spacing of the vertical steel bars (7) and the transverse steel bars (8) are the same as those of the original vertical wall steel bars (3).
4. The reinforcement method for adding a new hole on the vertical wall of a completed pool or pit according to claim 1, characterized in that: In S3, an expansion agent should be added to the non-shrinkage grouting material.