Structure for repairing inner side of material blocking wall by using steel plate lining
By adding a steel plate lining to the inside of the retaining wall and connecting it with the original steel reinforcement, the problem of weak bonding between new and old concrete in traditional repair methods is solved, thus achieving reinforcement and service life extension of the retaining wall and reducing maintenance costs.
Patent Information
- Application Number
- CN202422750619.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-12
AI Technical Summary
Traditional methods for repairing damaged inner sides of reinforced concrete retaining walls result in weak bonding between new and old concrete, leading to a short service life and potential safety hazards.
The steel plate lining structure is adopted. By adding a steel plate lining to the inside of the retaining wall, and connecting it with the original steel bars using short steel bars, anchor bars and tie bars, and fixing it with fine stone concrete, an integral structure is formed.
It significantly extends the service life of the retaining wall, reduces maintenance costs, and improves the safety and stability of the structure.
Smart Images
Figure CN223577602U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a material blocking wall repairing structure, in particular to a structure using steel plate lining to realize the repairing of the inner side of the material blocking wall. BACKGROUND
[0002] The reinforced concrete material blocking wall is a common structure form in modern industry, which is widely used in mining, non-ferrous metallurgy, coal and other industries, and is mainly used for storing bulk materials and block materials, and can be divided into cantilever type material blocking wall or plate type material blocking wall with supporting columns according to the stress form. The material blocking wall is usually not independently configured, and a single-layer bent frame plant is usually built on it to form a storage warehouse. A crown block capable of running longitudinally to take and drop materials is arranged in the plant, a roof is arranged on the top of the plant, and a wall is arranged on the side of the plant to avoid the influence of weather on the materials. Figure 2 As shown in the figure, it is a typical storage plant configuration with a material blocking wall: the two sides are reinforced concrete material blocking walls, and the upper part is a steel structure single-layer plant. In order to save investment and maximize the storage capacity, the columns of the single-layer bent frame plant are usually not provided with a foundation, and the column feet of the steel columns are directly arranged on the top of the material blocking wall.
[0003] Since the material blocking wall is made of reinforced concrete, the inner wall near the material storage side will be damaged and peeled due to repeated impact and wear of the materials in long-term use, which will expose the stress reinforcement of the inner material blocking wall and seriously affect the service life of the material blocking wall, and also cause structural safety hazards to the plant supported on the upper part of the material blocking wall. The traditional treatment method is to simply pour new concrete on the exposed inner steel reinforcement, but since the concrete has poor wear resistance and the bonding between the new and old concrete is not firm enough, damage will occur again in a short period of time, and the effect is not good. SUMMARY
[0004] The utility model discloses a structure using steel plate lining to realize the repairing of the inner side of the material blocking wall. The utility model can effectively reinforce the inner side of the material blocking wall, effectively prolong the single-use cycle of the material blocking wall after adding the steel plate lining, and greatly reduce the maintenance cost.
[0005] The technical scheme of the utility model discloses a structure using steel plate lining to realize the repairing of the inner side of the material blocking wall, which comprises a steel plate lining, the steel plate lining is arranged in parallel and at intervals on the inner side of the original material blocking wall, the vertical steel reinforcement and the horizontal steel reinforcement of the original material blocking wall are exposed after the steel reinforcement protection layer of the original material blocking wall is removed, wherein the vertical steel reinforcement and the steel plate lining are respectively provided with short steel reinforcement and anchor reinforcement which horizontally extend towards each other, the top and the bottom of the steel plate lining are further fixedly connected with the vertical steel reinforcement through the tie reinforcement, and fine stone concrete is poured between the inner side of the original material blocking wall and the steel plate lining.
[0006] The short steel bars are welded on the exposed vertical steel bars at intervals along the height direction of the vertical steel bars, and the vertical distance between two adjacent short steel bars is 500-600 mm, and the length of the short steel bars is 95-105 mm.
[0007] The anchor bars are arranged in a rectangular array in the steel lining, and are staggered with the short steel bars, and the distance between two adjacent anchor bars in the same row or column is 400 mm, and the length of the anchor bars is 75-85 mm.
[0008] The two end portions of the tie steel bars are vertically bent, and two rows of tie steel bars are arranged at the top and bottom of the steel lining, and the distance between two adjacent tie steel bars in the same row is the same as the distance between the vertical steel bars.
[0009] The steel lining is arranged in multiple blocks in the vertical direction, each block of the steel lining has a height of 0.8-1.2 m and a thickness of 6-8 mm, and a mounting gap is reserved between the upper and lower steel linings, and the steel lining and the upper and lower steel linings are fixedly connected at the mounting gap.
[0010] The distance between the steel lining and the inner wall of the original material retaining wall before the steel bar protective layer is removed is greater than or equal to 100 mm.
[0011] Compared with the prior art, the utility model discloses a new processing structure, that is, a steel lining is additionally arranged, and the utility model structure can effectively reinforce the inner side of the material retaining wall, and the operation is also relatively simple, and practice proves that the effect is very remarkable. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a structural schematic view of the utility model;
[0013] Figure 2 It is a structural schematic view of the utility model;
[0014] Reference Signs: 1-original material retaining wall, 2-vertical steel bar, 3-horizontal steel bar, 4-short steel bar, 5-steel lining, 6-anchor bar, 7-tie steel bar, 8-steel plate, 9-fine stone concrete. Detailed Implementation
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.
[0016] An embodiment of this utility model: a structure for repairing the inner side of a retaining wall using a steel plate lining, such as... Figure 1 As shown, it includes a steel plate liner 5, which is installed parallel and spaced on the inner side of the original retaining wall 1 to be repaired. After the protective layer of the reinforcing steel on the inner side of the original retaining wall 1 is removed, the vertical reinforcing steel 2 and horizontal reinforcing steel 3 on the inner side are exposed. The vertical reinforcing steel 2 and the steel plate liner 5 are each provided with short reinforcing steel 4 and anchor bars 6 extending horizontally toward each other. That is, the vertical reinforcing steel 2 is provided with short reinforcing steel 4 extending horizontally toward the steel plate liner 5, and the steel plate liner 5 is provided with anchor bars 6 extending horizontally toward the original retaining wall 1. The top and bottom of the steel plate liner 5 are also fixedly connected to the vertical reinforcing steel 2 by tie bars 7. Fine stone concrete 9 is poured between the inner side of the original retaining wall 1 and the steel plate liner 5.
[0017] In the above structure, the steel plate lining 5 and the vertical steel bar 2 are first fixedly connected by the tie bar 7, thereby fixing the steel plate lining 5. The short steel bar 4 can improve the connection effect between the vertical steel bar 2 and the fine stone concrete 9 poured later. The anchor bar 6 can improve the connection effect between the steel plate lining 5 and the poured fine stone concrete 9, so that the fine stone concrete 9, the steel plate lining 5 and the original retaining wall 1 are better connected to form a whole, ensuring a firm bond between the new and old concrete.
[0018] The structure of this utility model can be implemented according to the following steps during construction:
[0019] First, roughen the inner concrete part of the original retaining wall 1 where the problem occurred, so that the vertical steel bars 2 and horizontal steel bars 3 on the inner side of the original retaining wall 1 are fully exposed. Then, brush a layer of neat cement slurry on the roughened inner surface of the original retaining wall 1.
[0020] Second, short steel bars 4 for anchoring are welded onto the exposed vertical steel bars 2. The short steel bars 4 can be φ8 to 10. The spacing of the short steel bars in the vertical and horizontal directions can be taken as @500 to 600mm according to the spacing of the vertical steel bars 2 in the original retaining wall 1, and the length is about 100mm.
[0021] Third, the pre-made steel lining 5 and vertical reinforcement 2 are effectively connected by welding the two ends of the tie reinforcement 7. The steel lining 5 should be made in sections to avoid being too long to install. The length L of each section is preferably about 1.0 m. The thickness of the steel lining is preferably 6-8 mm. Anchor bars 6 should be welded to the steel lining 5 before installation. The anchor bars 6 are φ8@400 mm and are arranged at a position offset from the short reinforcement 4, with a length of about 80 mm. In addition, to facilitate the positioning and temporary fixing of the steel lining 5 before pouring concrete, φ10 tie reinforcement 7 should be provided at both ends of each section of the steel lining 5. The tie reinforcement 7 should be point-welded to the vertical reinforcement 2 at the same intervals as the vertical reinforcement 2. The ends of the tie reinforcement 7 are vertically bent to increase the welding area with the vertical reinforcement 2, thereby fixing the steel lining 5 in place.
[0022] Fourth, the second layer of steel lining 5 is installed and fixed in the above-mentioned manner, with a staggered joint of about 50-80 mm from the first layer of steel lining 5. The purpose of the staggered joint is to leave space for welding the tie reinforcement 7 at the bottom end of the second layer of steel lining 5 to the vertical reinforcement 2.
[0023] Fifth, after the second layer of steel lining 5 is fixed in place, a 70-100 mm wide and 6 mm thick steel plate 8 is used to seal the above-mentioned reserved joint. The steel plate 8 can be welded using continuous single fillet welds.
[0024] Sixth, after completing the above steps, fine aggregate concrete 9 with a grade of not less than C25 can be poured into the gap between the newly added steel lining 5 and the inner wall of the original retaining wall 1. To ensure pouring quality, 2-3 layers of steel lining 5 are installed before pouring the fine aggregate concrete 9, to ensure that the new concrete is vibrated and compacted, and the pouring quality is ensured. The distance between the newly added steel lining 5 and the inner wall of the original retaining wall 1, i.e. the value of a in the figure, should not be less than 100 mm. The steel lining 5 is installed in sections from bottom to top according to the above steps until the top of the original retaining wall 1. After the newly added fine aggregate concrete 9, steel lining 5, newly added short reinforcement 4, and anchor bars 6 form an integral whole, the work of adding steel lining 5 is completed, and the original problem is well solved. In actual use, the steel lining 5 can be added entirely according to the damage of the original retaining wall 1, or partially.
Claims
1. A structure for repairing the inner side of a retaining wall using a steel plate lining, characterized in that: It includes a steel plate lining (5), which is set parallel and spaced on the inside of the original retaining wall (1). After the protective layer of the steel reinforcement on the inside of the original retaining wall (1) is removed, the vertical steel reinforcement (2) and horizontal steel reinforcement (3) are exposed. The vertical steel reinforcement (2) and the steel plate lining (5) are each provided with short steel reinforcement (4) and anchor bars (6) extending horizontally towards each other. The top and bottom of the steel plate lining (5) are also fixedly connected to the vertical steel reinforcement (2) by tie bars (7). Fine stone concrete (9) is poured between the inside of the original retaining wall (1) and the steel plate lining (5). The anchor bars (6) are arranged in a rectangular pattern in the inner lining (5) of the steel plate and are staggered from the short steel bars (4). The spacing between adjacent anchor bars (6) in the same row or column is 400 mm and the length is 75-85 mm. The tie bars (7) have vertically bent ends. There are two rows of tie bars (7) at the top and bottom of the steel plate lining (5). The spacing between adjacent tie bars (7) in the same row is the same as the spacing between vertical bars (2). The steel plate lining (5) is provided in multiple pieces in the vertical direction. Each steel plate lining (5) has a height of 0.8 to 1.2 m and a thickness of 6 to 8 mm. An installation gap is reserved between the upper and lower steel plate linings (5). A steel plate (8) is provided at the installation gap and is fixedly connected to the upper and lower steel plate linings (5).
2. The structure for repairing the inner side of a retaining wall using a steel plate lining according to claim 1, characterized in that: Each exposed vertical steel bar (2) has multiple short steel bars (4) welded at intervals along its height direction. The vertical spacing between two adjacent short steel bars (4) is 500-600mm, and the length of the short steel bars (4) is 95-105mm.
3. The structure for repairing the inner side of a retaining wall using a steel plate lining as described in claim 1, characterized in that: The distance between the steel plate lining (5) and the inner wall of the original retaining wall (1) before the steel reinforcement protective layer was removed is ≥100mm.