Reinforced concrete surface layer reinforcing structure
By setting up reinforced concrete surface layers of grating mesh structures on both sides of the exterior wall, using the combination of anchor rods, steel bars and telescopic rods, the crack resistance problem of old brick-concrete structure buildings after aging is solved, and a better reinforcement effect is achieved.
Patent Information
- Application Number
- CN202510571116.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2025-08-15
AI Technical Summary
The strength of the exterior walls of old brick-concrete structure buildings decreases after aging, and the existing reinforced concrete surface reinforcement method is difficult to further improve its crack resistance.
A reinforced concrete surface layer is set on both sides of the exterior wall, and a grating mesh structure is adopted. Through the combination of anchor rods, steel bars, tie rods and telescopic rods, a multi-directional prestressed connection is formed to enhance the tensile resistance of the exterior wall.
Effectively prevent exterior walls from cracking, improve the overall strength and reinforcement effect of the building, and enhance the compressive and tensile resistance of the exterior walls.
Smart Images
Figure CN120486776A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of building reinforcement structures, and in particular relates to a reinforced concrete surface layer reinforcement structure. Background Art
[0002] At present, there are many old buildings with brick walls as their exterior walls. The brickwork of these brick walls has begun to age due to factors such as backward technology in the production era. These old buildings are usually not frame structures, but brick-concrete structures. The exterior walls are load-bearing walls. When they age, the overall strength of the building decreases and cracks appear on the exterior walls. Therefore, reinforcement is needed. The usual reinforcement method is to add a reinforced concrete surface layer on the outside of the original exterior wall, and use multiple anchor rods to combine the surface layer with the exterior wall, which increases the strength of the exterior wall and makes the exterior wall less likely to crack. However, this reinforcement method still has room for further enhancement. Summary of the Invention
[0003] The purpose of the present invention is to provide a reinforced concrete surface layer reinforcement structure. The present invention has the advantage of good reinforcement effect.
[0004] The technical solution of the present invention: a reinforced concrete surface layer reinforcement structure includes an outer wall, and reinforced concrete surface layers are provided on both sides of the outer wall. The reinforced concrete surface layers are composed of multiple reinforcement units. The reinforcement units include a square frame, and the frame is formed by a first steel beam, a second steel beam, a third steel beam and a fourth steel beam connected end to end. Anchor rods passing through the outer wall are provided between the frames on both sides of the outer wall. A plurality of parallel steel bars are provided in the frame, and the two ends of the steel bars are respectively connected to the first steel beam and the third steel beam. A plurality of tie rods are provided between adjacent steel bars. The plurality of steel bars and the plurality of tie rods constitute a grid mesh, and one side of the grid mesh is connected to the second steel beam, and the other side of the grid mesh is connected to the fourth steel beam through a plurality of telescopic rods.
[0005] In the aforementioned reinforced concrete surface reinforcement structure, the steel bars on one side of the exterior wall are vertically oriented, while the steel bars on the other side of the exterior wall are horizontally oriented.
[0006] In the aforementioned reinforced concrete surface layer reinforcement structure, both ends of the steel bars are rotatably connected to the frame, and the steel bars pass through the ends of the pull rods.
[0007] In the aforementioned reinforced concrete surface layer reinforcement structure, both ends of the steel bar are wound to form a first hook, and a first pin column fixed to the frame is provided in the first hook.
[0008] In the aforementioned reinforced concrete surface layer reinforcement structure, both ends of the pull rod are wound into second pull hooks, and the steel bars pass through the second pull hooks.
[0009] In the aforementioned reinforced concrete surface layer reinforcement structure, the end of the anchor rod passes through the corresponding frame and is provided with a first nut.
[0010] In the aforementioned reinforced concrete surface reinforcement structure, the telescopic rod includes a screw rod, one end of which is rotatably connected to the fourth steel beam, the other end of the screw rod is provided with a screw sleeve passed by the steel bar, and the screw rod is provided with a second nut.
[0011] Compared with the prior art, the present invention has the following advantages:
[0012] 1) Reinforced concrete surface layers are set on the inner and outer sides of the exterior wall to provide support for both sides of the exterior wall and better strengthen the exterior wall.
[0013] 2) There are multiple frames in the reinforced concrete surface layer, and multiple steel bars in the frames. The steel bars and tie rods form a grid network. The grid network is connected to the frame through a telescopic rod. By shortening the length of the telescopic rod, the steel bars and tie rods can be prestressed and tightened, giving tension to the exterior wall in advance, better avoiding cracking of the exterior wall, and further improving the reinforcement effect.
[0014] 3) When the telescopic rod tightens the grid mesh, multiple bends will be formed on the steel bar, which will increase the bonding strength between the steel bar and the cured concrete, thereby improving the structural strength of the reinforced concrete surface layer and thus improving the reinforcement effect.
[0015] 4) In reinforced concrete structures, concrete is characterized by good compressive strength and low tensile strength, while steel is characterized by good tensile strength and low compressive strength. Preventing exterior wall cracking primarily utilizes the tensile strength of steel, using the tensile force of the steel to prevent cracking. In the present invention, because the steel bars on either side of the exterior wall run in different, perpendicular directions, cracking in any direction of the exterior wall is effectively restrained, thereby enhancing the reinforcement effect.
[0016] 5) Due to the movable connection between the steel bars and the frame, the movable connection between the pull rod and the steel bars, the movable connection between the telescopic rod and the frame, and the movable connection between the telescopic rod and the steel bars, when the grid mesh is tightened, each connection point can withstand the tension better, and each connection point is not easy to disconnect, thereby improving the strength of the reinforced concrete surface layer, which also improves the reinforcement effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a front view schematic diagram of the reinforcement unit on one side of the exterior wall.
[0018] Figure 2 This is a schematic front view of the reinforcement unit on the other side of the exterior wall.
[0019] Figure 3 This is a schematic cross-section of the exterior wall.
[0020] Figure 4 It is a structural diagram of the end of the steel bar.
[0021] Figure 5 It is a structural diagram of the pull rod. Figure 6 It is a structural diagram of the telescopic rod.
[0022] The marks in the accompanying drawings are: 1-exterior wall, 2-first steel beam, 3-second steel beam, 4-third steel beam, 5-fourth steel beam, 6-anchor rod, 7-rebar, 8-pull rod, 9-telescopic rod, 10-first hook, 11-first pin, 12-second hook, 13-first nut, 14-screw, 15-screw sleeve, 16-second nut. DETAILED DESCRIPTION
[0023] The present invention will be further described below with reference to the accompanying drawings and examples, but they are not intended to limit the present invention.
[0024] Example 1: Reinforced concrete surface reinforcement structure, such as Figure 1 As shown, it includes an outer wall 1, and both sides of the outer wall 1 are provided with reinforced concrete surface layers, and the reinforced concrete surface layers are composed of multiple reinforcement units, and adjacent reinforcement units are fixed together.
[0025] The reinforcement unit includes a square frame, which is formed by connecting the first steel beam 2, the second steel beam 3, the third steel beam 4 and the fourth steel beam 5 end to end. The first steel beam 2, the second steel beam 3, the third steel beam 4 and the fourth steel beam 5 are made of angle steel. Anchor rods 6 passing through the outer wall 1 are provided between the frames on both sides of the outer wall 1. A plurality of parallel steel bars 7 are provided in the frame. The two ends of the steel bars 7 are respectively connected to the first steel beam 2 and the third steel beam 4. A plurality of tie rods 8 are provided between adjacent steel bars 7. The plurality of steel bars 7 and the plurality of tie rods 8 constitute a grid net. One side of the grid net is connected to the second steel beam 3, and the other side of the grid net is connected to the fourth steel beam 5 through a plurality of telescopic rods 9.
[0026] The steel bars 7 on one side of the exterior wall 1 are vertically oriented, while the steel bars 7 on the other side of the exterior wall 1 are horizontally oriented. This is equivalent to rotating the reinforcement unit on the outside of the exterior wall 1 by 90 degrees to become the reinforcement unit on the inside of the exterior wall 1.
[0027] Both ends of the steel bar 7 are wound more than twice to form a first hook 10, and a first pin 11 fixed to the frame is provided in the first hook 10. Both ends of the pull rod 8 are wound into a second hook 12, and the steel bar 7 passes through the second hook 12.
[0028] The end of the anchor rod 6 passes through the corresponding frame and is provided with a first nut 13 .
[0029] The telescopic rod 9 includes a screw rod 14 , one end of which passes through the fourth steel beam 5 and is provided with a hexagonal head 17 , the other end of which is provided with a screw sleeve 15 passed by the steel bar 7 , and a second nut 16 is provided on the screw rod 14 .
[0030] Example 2: Construction process of reinforced concrete surface layer reinforcement structure: comprising the following steps:
[0031] 1) A plurality of wall holes distributed in a rectangular array are punched on the outer wall 1 , and anchor rods 6 are passed through the wall holes. The diameter of the wall holes is about 3 mm larger than the diameter of the anchor rods 6 .
[0032] 2) Fill the wall hole with castable material. The castable material can be unsaturated polyester resin or epoxy resin, which is used to connect the anchor rod 6 to the outer wall 1 as a whole and eliminate the gap between the anchor rod 6 and the wall hole. The threaded parts at both ends of the anchor rod 6 are kept outside the wall hole. When filling the castable material, tape can be wrapped around the threaded part or a sheath can be set to prevent the castable material from entering the screw groove.
[0033] 3) Angle steels are laid on the inner and outer sides of the exterior wall, and anchor rods 6 are inserted into the prefabricated holes of the angle steels to preliminarily fix the positions of the angle steels. A grid structure composed of angle steels is formed on the exterior wall. A single grid is a frame, and the angle steels around the frame are respectively recorded as the first steel beam 2, the second steel beam 3, the third steel beam 4 and the fourth steel beam 5.
[0034] 4) Adjacent angle steels are welded and fixed.
[0035] 5) Tighten the first nuts 13 at both ends of the anchor rod 6, so that the frame and the outer wall 1 are fixed, and the frames inside and outside the outer wall 1 are also connected into one.
[0036] 6) Rotate and connect the two ends of the steel bars 7 to the first steel beam 2 and the third steel beam 4 respectively, and pass a plurality of tie rods 8 through the adjacent steel bars 7. The plurality of steel bars 7 and the plurality of tie rods 8 form a grid.
[0037] 7) The steel bars 7 on one side of the grid are connected to the frame, and the steel bars 7 on the other side of the grid are connected to the frame via telescopic rods 9.
[0038] 8) Tightening the screw 14 forms multiple bends on the steel bar 7 and prestresses the tie rods 8. The tie rods 8 play a major role in preventing the exterior wall 1 from cracking. Since the tie rods 8 on one side of the exterior wall 1 are vertical and the tie rods 8 on the other side are horizontal, cracking in any direction of the exterior wall is restrained.
[0039] 9) Formwork is set up on both the inside and outside of the exterior wall, and concrete is poured layer by layer. The frame is buried in the concrete layer. After the concrete solidifies, the formwork is removed to complete the reinforcement work. Subsequently, watering and maintenance are carried out for a period of time depending on the situation.
[0040] In the description of the embodiments, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation.
Claims
1. Reinforced concrete surface reinforcement structure, characterized by: The invention comprises an outer wall (1), wherein both sides of the outer wall (1) are provided with reinforced concrete surface layers, wherein the reinforced concrete surface layers are composed of a plurality of reinforcement units, wherein the reinforcement units include a square frame, wherein the frame is formed by connecting a first steel beam (2), a second steel beam (3), a third steel beam (4) and a fourth steel beam (5) end to end, wherein anchor rods (6) passing through the outer wall (1) are provided between the frames on both sides of the outer wall (1), wherein a plurality of mutually parallel steel bars (7) are provided in the frame, wherein the two ends of the steel bars (7) are respectively connected to the first steel beam (2) and the third steel beam (4), wherein a plurality of tie rods (8) are provided between adjacent steel bars (7), wherein the plurality of steel bars (7) and the plurality of tie rods (8) constitute a grid network, wherein one side of the grid network is connected to the second steel beam (3), and the other side of the grid network is connected to the fourth steel beam (5) via a plurality of telescopic rods (9).
2. The reinforced concrete surface reinforcement structure according to claim 1, characterized in that: The steel bars (7) on one side of the outer wall (1) are oriented vertically, and the steel bars (7) on the other side of the outer wall (1) are oriented horizontally.
3. The reinforced concrete surface reinforcement structure according to claim 1, characterized in that: Both ends of the steel bar (7) are rotatably connected to the frame, and the steel bar (7) passes through the end of the pull rod (8).
4. The reinforced concrete surface reinforcement structure according to claim 3, characterized in that: Both ends of the steel bar (7) are wound to form a first hook (10), and a first pin (11) fixed to the frame is provided in the first hook (10).
5. The reinforced concrete surface reinforcement structure according to claim 3, characterized in that: Both ends of the pull rod (8) are wound into second pull hooks (12), and the steel bar (7) passes through the second pull hooks (12).
6. The reinforced concrete surface reinforcement structure according to claim 1, characterized in that: The end of the anchor rod (6) passes through the corresponding frame and is provided with a first nut (13).
7. The reinforced concrete surface reinforcement structure according to claim 1, characterized in that: The telescopic rod (9) includes a screw rod (14), one end of which is rotatably connected to the fourth steel beam (5), the other end of which is provided with a screw sleeve (15) passed through by the steel bar (7), and a second nut (16) is provided on the screw rod (14).