Original wall integral reinforcing system and reinforcing method

Abstract

The invention relates to the technical field of building reinforcement, and discloses an original wall overall reinforcing system and a reinforcing method.The original wall overall reinforcing system comprises a reinforcing surface layer and a connecting structure; the reinforcing surface layer is arranged on the surface of an original wall. The reinforcing surface layer is connected with an original wall body through a connecting structure; the connecting structure is used for achieving reinforced connection of a wall surface area, an original wall body and floor plate connecting area and an original wall body corner area. The connection reliability and the overall performance of an original wall reinforcing system can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building reinforcement, in particular to a whole reinforcement system and method for original wall. BACKGROUND

[0002] In the field of construction, especially when renovating and reinforcing existing buildings, reinforcing the original wall is an important link. In the prior art, the original wall is usually reinforced by traditional reinforcement methods, such as steel reinforcement, carbon fiber cloth reinforcement, etc. Although these methods can improve the bearing capacity and durability of the original wall to some extent, they also have some shortcomings.

[0003] Firstly, traditional reinforcement methods often require a large amount of steel cutting and welding work on the construction site, which not only increases the construction difficulty and construction period, but also produces a lot of noise pollution, which adversely affects the surrounding environment. Secondly, these methods are relatively simple in the design of connecting structures, and are difficult to adapt to the reinforcement needs of different parts of the wall area, the intersection area of the original wall and the floor slab, and the corner area of the original wall, reducing the overall reinforcement effect.

[0004] These shortcomings of the prior art result in poor connection reliability of the original wall reinforcement system, which cannot meet the safety and durability requirements of building structures, and cannot effectively cope with complex and variable building environments and load conditions. SUMMARY

[0005] The purpose of the present application is to provide a whole reinforcement system and method for original wall, which can improve the connection reliability and overall performance of the original wall reinforcement system.

[0006] To solve the above technical problems, the present application provides a whole reinforcement system for original wall, comprising a reinforcement surface layer and a connecting structure; the reinforcement surface layer is arranged on the surface of the original wall; the reinforcement surface layer is connected to the original wall through the connecting structure; the connecting structure is used to realize the reinforcement connection of the wall area, the intersection area of the original wall and the floor slab, and the corner area of the original wall.

[0007] Further, the material of the reinforcement surface layer comprises a fiber reinforced cement-based composite material.

[0008] Further, the connecting structure comprises horizontal longitudinal reinforcement and wall-penetrating reinforcement; the reinforcement surface layer on both sides of the original wall is provided with the horizontal longitudinal reinforcement; the wall-penetrating reinforcement is in the shape of a Chinese character, the wall-penetrating reinforcement is perpendicular to the reinforcement surface layer, the wall-penetrating reinforcement penetrates through the original wall, and both ends are respectively connected to the horizontal longitudinal reinforcement on both sides of the original wall.

[0009] Furthermore, the connection structure includes horizontal longitudinal bars and through-wall bars; the horizontal longitudinal bars are located within the reinforced surface layer on one side of the original wall and on both sides of the floor slab; the through-wall bars are straight, parallel to the reinforced surface layer and located within the reinforced surface layer on one side of the original wall, and the through-wall bars pass through the floor slab with both ends connected to the horizontal longitudinal bars on both sides of the floor slab.

[0010] Furthermore, the connection structure includes horizontal longitudinal bars and through-wall bars; the horizontal longitudinal bars are provided in the reinforced surface layer on both sides of the original wall; the through-wall bars are U-shaped and have a first segment, a second segment, and a third segment connected in sequence; the second segment passes through the original wall, and its two ends are respectively tied to the horizontal longitudinal bars on both sides of the original wall; the first segment and the third segment are respectively located in the reinforced surface layer on both sides of the original wall, and the ends of the first segment and the third segment away from the second segment extend from the reinforced surface layer into the board joint.

[0011] Furthermore, the connection structure includes horizontal longitudinal bars and through-wall bars; in the corner area of ​​the original wall, the horizontal longitudinal bars are located within the reinforced surface layer on one side of the original wall; the through-wall bars are L-shaped, having a first segment and a second segment connected in sequence; one end of the second segment is located in the original wall, and the other end extends out of the original wall to be connected with the horizontal longitudinal bars; the first segment is located within the reinforced surface layer, and the end of the first segment away from the second segment extends from within the reinforced surface layer into the floor slab.

[0012] Furthermore, the connecting structure includes horizontal longitudinal bars and through-wall bars; the horizontal longitudinal bars are provided in the reinforced surface layer on both sides of the original wall; the through-wall bars are U-shaped, having a first segment, a second segment, a third segment, and a fourth segment connected in sequence; the second segment and the fourth segment are arranged in parallel and are both located in the original wall, with both ends of the second segment extending into the reinforced surface layer on both sides of the original wall and connecting to one end of the first segment and the third segment respectively; the first segment and the third segment are located in the reinforced surface layer on both sides of the original wall; both ends of the fourth segment extend into the reinforced surface layer on both sides of the original wall and connect to the other end of the first segment and the third segment respectively.

[0013] Furthermore, in the area where the original wall meets the floor slab, the first segment and the third segment are located within the reinforced surface layer on both sides of the original wall and pass through the floor slab.

[0014] Furthermore, this invention also proposes a method for overall reinforcement of existing walls, using the existing wall overall reinforcement system as described above, specifically including the following:

[0015] Different types of connection structures are installed on the existing walls depending on the different existing wall areas;

[0016] A reinforcing layer is installed on the surface of the existing wall, and the reinforcing layer is connected to the existing wall through the connecting structure.

[0017] Furthermore, the installation of different types of connection structures on the existing wall specifically includes: installing straight through-wall reinforcement bars and horizontal longitudinal reinforcement bars in the wall surface area; installing straight, U-shaped, or square-shaped through-wall reinforcement bars and horizontal longitudinal reinforcement bars in the area where the existing wall meets the floor slab; and installing L-shaped through-wall reinforcement bars and horizontal longitudinal reinforcement bars in the corner area of ​​the existing wall; wherein the ends of the through-wall reinforcement bars are tied and fixed to the horizontal longitudinal reinforcement bars.

[0018] The provision of a reinforcement layer on the surface of the existing wall specifically includes: preparing the reinforcement layer using fiber-reinforced cement-based composite material; and using reinforcement layers of different thicknesses on the existing walls of different floors according to the stress conditions of different floors of the building.

[0019] Through the above technical solution, the present invention has the following beneficial effects:

[0020] By setting up dedicated connection structures for wall areas, the junction areas between existing walls and floor slabs, and the corner areas of existing walls, and combining the reinforced surface layer with the existing walls to form an integrated collaborative working system, the overall performance and connection reliability of the existing wall reinforcement system can be improved, the stability and safety of the building structure can be enhanced, and the complex and ever-changing building environment and load conditions can be effectively coped with.

[0021] Furthermore, by using high-stability fiber-reinforced cementitious composite materials to prepare the reinforced surface layer, and by employing reinforced surface layers of varying thicknesses according to the stress conditions of different floors in the building, the strength and toughness of the reinforced material can be improved, reducing the risk of cracking in the reinforced surface layer. Simultaneously, combining different types of through-wall reinforcement (I-shaped, U-shaped, L-shaped, and square-shaped) with horizontal longitudinal reinforcement can enhance the connection strength between the original wall and the reinforced surface layer, improve overall collaborative performance, extend the building's service life, and reduce maintenance costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of both longitudinal and transverse walls in an embodiment of the present invention's original wall reinforcement system;

[0023] Figure 2 This is a schematic diagram of the structure of a single-sided longitudinal wall and double-sided transverse wall in an original wall reinforcement system according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of a single exterior wall of a longitudinal wall in an existing wall reinforcement system according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the transverse wall on both sides in an embodiment of the present invention's original wall reinforcement system;

[0026] Figure 5 This is a schematic diagram of the structure of a single side of a transverse wall in an existing wall reinforcement system according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the inner side of a single longitudinal wall in an existing wall reinforcement system according to an embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram of the structure of both sides of the wall where the opening is located in the original wall reinforcement system according to an embodiment of the present invention;

[0029] Figure 8 This is a structural schematic diagram of a single side of the wall where the opening is located in the original wall reinforcement system according to an embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the structure of the first type of roof layer in the original wall reinforcement system according to an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the structure of the second type of roof layer in the original wall reinforcement system according to an embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the structure of the third type of roof layer in the original wall reinforcement system according to an embodiment of the present invention;

[0033] Figure 12 This is a schematic diagram of the fourth type of roof layer in the original wall reinforcement system according to an embodiment of the present invention;

[0034] Figure 13 This is a schematic diagram of the structure of the first type of interior wall floor in the original wall reinforcement system according to an embodiment of the present invention;

[0035] Figure 14 This is a schematic diagram of the structure of the second type of interior wall floor in the original wall reinforcement system according to an embodiment of the present invention;

[0036] Figure 15 This is a schematic diagram of the third type of interior wall floor in the original wall reinforcement system according to an embodiment of the present invention;

[0037] Figure 16 This is a schematic diagram of the fourth type of interior wall floor in the original wall reinforcement system according to an embodiment of the present invention;

[0038] Figure 17 This is a schematic diagram of the structure of the first type of exterior wall floor in the original wall reinforcement system according to an embodiment of the present invention;

[0039] Figure 18 This is a schematic diagram of the structure of the second type of exterior wall floor in the original wall reinforcement system according to an embodiment of the present invention;

[0040] Figure 19 This is a schematic diagram of the third type of exterior wall floor in the original wall reinforcement system according to an embodiment of the present invention;

[0041] Figure 20 This is a schematic diagram of the fourth type of exterior wall floor in the original wall reinforcement system according to an embodiment of the present invention;

[0042] Figure 21 This is a schematic diagram of the fifth type of exterior wall floor with ring beam in the original wall reinforcement system according to an embodiment of the present invention;

[0043] Figure 22 This is a schematic diagram of the structure of the foundation exterior wall in an existing wall reinforcement system according to an embodiment of the present invention;

[0044] Figure 23 This is a schematic diagram of the structure of the foundation inner wall in an existing wall reinforcement system according to an embodiment of the present invention;

[0045] Figure 24 This is a schematic diagram of a structural system with caulking and square holes in an existing wall reinforcement system according to an embodiment of the present invention;

[0046] Figure 25 This is a schematic diagram of the floor structure in an existing wall reinforcement system according to an embodiment of the present invention;

[0047] Figure 26 This is a schematic diagram of the floor chamfer in an existing wall reinforcement system according to an embodiment of the present invention;

[0048] Figure 27 This is a schematic diagram of the structure of the strip-masonry composite structural column in the original wall reinforcement system according to an embodiment of the present invention;

[0049] Figure 28 This is a schematic diagram of the structure of the original wall reinforcement system after the joints are removed in one embodiment of the present invention;

[0050] Figure 29 This is a schematic diagram of the connection between the strip and the original wall ring beam in an existing wall reinforcement system according to an embodiment of the present invention.

[0051] Figure 30 This is a schematic diagram of the double-sided strip structure in an original wall reinforcement system according to an embodiment of the present invention;

[0052] Figure 31 This is a schematic diagram of a single-sided strip in an existing wall reinforcement system according to an embodiment of the present invention;

[0053] Figure 32 This is a schematic diagram of the overall structure of the original wall reinforcement system in one embodiment of the present invention;

[0054] Figure 33 This is a flowchart of an embodiment of the present invention for a method of overall reinforcement of the original wall.

[0055] In the diagram, 1 represents the existing wall; 2 represents the reinforced surface layer; 3 represents the horizontal longitudinal reinforcement; 4 represents the through-wall reinforcement; and 5 represents the strip. Detailed Implementation

[0056] Based on the teachings of this specification, those skilled in the art can form new technical solutions through cross-combination of different implementation methods without creating technical contradictions. Such variations should all be considered to fall within the protection scope of this invention.

[0057] The present invention will now be described in more detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. It should be understood that those skilled in the art can modify the invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the invention.

[0058] The invention is described more specifically by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0059] like Figures 1-32 As shown in the figure, this embodiment of the invention proposes an overall reinforcement system for existing walls, including a reinforcement surface layer 2 and a connecting structure.

[0060] Specifically, the reinforced surface layer 2 is disposed on the surface of the original wall 1; the reinforced surface layer 2 is connected to the original wall 1 through the connecting structure; the connecting structure is used to achieve reinforced connection of the wall area, the junction area between the original wall 1 and the floor slab, and the corner area of ​​the original wall 1. Through this dedicated connecting structure for different areas, the overall performance of the reinforcement system can be improved, enhancing the stability and seismic performance of the building structure.

[0061] Preferably, the material of the reinforced surface layer 2 includes fiber-reinforced cementitious composite material. In a specific example, as those skilled in the art will know, the thickness of the reinforced surface layer 2 can be set according to the load-bearing requirements and stress conditions of the original wall 1. In this embodiment, the reinforced surface layer 2 is prepared using fiber-reinforced cementitious composite material, which can improve the strength and toughness of the reinforced layer, reduce the risk of cracking of the reinforced surface layer 2, and thus enhance the overall reinforcement effect.

[0062] Among them, the fiber-reinforced cement-based composite material is a high-precision fiber-reinforced cement-based composite material. For details on its preparation and its application as the reinforcement layer 2, please refer to the paper published in December 2024 with the article number "1674-1900(2024)35-0031-04", titled "Technical Application of High-Elongation Fiber-Reinforced Cement-Based Composite Material in the Reinforcement of Masonry Houses".

[0063] In one embodiment, for the wall area, the connecting structure includes horizontal longitudinal reinforcement 3 and through-wall reinforcement 4. The horizontal longitudinal reinforcement 3 is provided within the reinforced surface layer 2 on both sides of the original wall 1; the through-wall reinforcement 4 is straight, perpendicular to the reinforced surface layer 2, passes through the original wall 1, and its two ends are respectively connected to the horizontal longitudinal reinforcement 3 on both sides of the original wall 1. Those skilled in the art will know that the diameter and spacing of the horizontal longitudinal reinforcement 3 and the through-wall reinforcement 4 can be adjusted according to actual engineering requirements. In this embodiment, the through-wall reinforcement 4 passes through the original wall 1, effectively connecting the horizontal longitudinal reinforcement 3 on both sides to form an integrated load-bearing system, which can improve the connection strength between the original wall 1 and the reinforced surface layer 2 and enhance the overall collaborative performance.

[0064] Preferably, for the area where the original wall 1 meets the floor slab, the connecting structure includes horizontal longitudinal reinforcement 3 and through-wall reinforcement 4. The horizontal longitudinal reinforcement 3 is located within the reinforced surface layer 2 on one side of the original wall 1 and on both sides of the floor slab. The through-wall reinforcement 4 is straight, parallel to the reinforced surface layer 2, and located within the reinforced surface layer 2 on one side of the original wall 1. The through-wall reinforcement 4 passes through the floor slab, and its two ends are respectively connected to the horizontal longitudinal reinforcement 3 on both sides of the floor slab. Specifically, the horizontal longitudinal reinforcement 3 is arranged parallel to each other within the reinforced surface layer 2 on both sides of the floor slab, forming continuous load-bearing components. The through-wall reinforcement 4 passes through the floor slab, connecting the horizontal longitudinal reinforcement 3 on both sides of the floor slab to form an integral reinforced structure. In this embodiment, this connecting structure can effectively enhance the integrity of the area where the original wall 1 meets the floor slab, and improve the building structure's resistance to deformation under earthquakes or other external forces.

[0065] In this embodiment, for another connection method at the junction area of ​​the original wall 1 and the floor slab, the connection structure includes horizontal longitudinal reinforcement 3 and through-wall reinforcement 4; the horizontal longitudinal reinforcement 3 is provided in the reinforced surface layer 2 on both sides of the original wall 1; the through-wall reinforcement 4 is U-shaped, with a first segment, a second segment, and a third segment connected in sequence; the second segment passes through the original wall 1, and its two ends are respectively connected to the horizontal longitudinal reinforcement 3 on both sides of the original wall 1; the first segment and the third segment are respectively located in the reinforced surface layer 2 on both sides of the original wall 1, and the ends of the first segment and the third segment away from the second segment extend from the reinforced surface layer 2 into the slab joint. In this embodiment, the U-shaped through-wall reinforcement 4 can not only connect the reinforced surface layer 2 on both sides of the original wall 1, but also strengthen the connection between the original wall 1 and the floor slab by extending into the slab joint, thereby improving the overall structural performance and effectively enhancing the seismic performance of the building structure.

[0066] In one embodiment, for the corner area of ​​the original wall 1, the connecting structure includes horizontal longitudinal reinforcement 3 and through-wall reinforcement 4. In the corner area of ​​the original wall 1, the horizontal longitudinal reinforcement 3 is located within the reinforced surface layer 2 on one side of the original wall 1. The through-wall reinforcement 4 is L-shaped, having a first segment and a second segment connected in sequence. One end of the second segment is located within the original wall 1, and the other end extends outside the original wall 1 to connect with the horizontal longitudinal reinforcement 3. The first segment is located within the reinforced surface layer 2, and the end of the first segment away from the second segment extends from within the reinforced surface layer 2 into the floor slab. In this embodiment, the L-shaped through-wall reinforcement 4 can effectively connect the reinforced surface layer 2 and the original wall 1 in the corner area of ​​the original wall 1. At the same time, by extending into the floor slab, it strengthens the connection between the original wall 1 and the floor slab, improves the integrity and stability of the corner area, and enhances the torsional resistance of the building structure under seismic action.

[0067] Preferably, for another connection method at the junction area of ​​the original wall 1 and the floor slab, the connection structure includes horizontal longitudinal bars 3 and through-wall bars 4; the horizontal longitudinal bars 3 are provided in the reinforced surface layer 2 on both sides of the original wall 1; the through-wall bars 4 are U-shaped, having a first segment, a second segment, a third segment and a fourth segment connected in sequence; the second segment and the fourth segment are arranged in parallel and are both located in the original wall 1, the two ends of the second segment extend into the reinforced surface layer 2 on both sides of the original wall 1 and are respectively connected to one end of the first segment and the third segment; the first segment and the third segment are respectively located in the reinforced surface layer 2 on both sides of the original wall 1; the two ends of the fourth segment extend into the reinforced surface layer 2 on both sides of the original wall 1 and are respectively connected to the other end of the first segment and the third segment. In this embodiment, the U-shaped through-wall reinforcement 4 forms a closed frame structure, which can provide connection and constraint in both horizontal and vertical directions, effectively improving the connection strength and integrity between the original wall 1 and the reinforced surface layer 2, and enhancing the seismic performance of the building structure.

[0068] In this embodiment, based on another connection method for the junction area between the original wall 1 and the floor slab, the first segment and the third segment are respectively located within the reinforced surface layer 2 on both sides of the original wall 1 and pass through the floor slab. In this embodiment, by allowing a portion of the through-wall reinforcement 4 to pass through the floor slab, the connection between the original wall 1 and the floor slab can be strengthened, the overall structural performance can be improved, and the seismic performance of the building structure under earthquake action can be effectively enhanced.

[0069] In addition, such as Figure 33 As shown, this embodiment also proposes a method for overall reinforcement of existing walls, using the existing wall overall reinforcement system as described above, specifically including the following steps:

[0070] S1. Based on different areas of the original wall 1, install different types of connection structures on the original wall 1;

[0071] S2. A reinforcing layer 2 is provided on the surface of the original wall 1, and the reinforcing layer 2 is connected to the original wall 1 through the connecting structure.

[0072] This embodiment uses different connection structures for different areas of the original wall 1, which can improve the targeting and effectiveness of the reinforcement system and enhance the overall reinforcement effect.

[0073] Preferably, the installation of different types of connection structures on the original wall 1 specifically includes: installing a straight through-wall reinforcement 4 and a horizontal longitudinal reinforcement 3 in the wall surface area; installing a straight, U-shaped, or square through-wall reinforcement 4 and a horizontal longitudinal reinforcement 3 in the area where the original wall 1 intersects with the floor slab; and installing an L-shaped through-wall reinforcement 4 and a horizontal longitudinal reinforcement 3 in the corner area of ​​the original wall 1; wherein the end of the through-wall reinforcement 4 is tied and fixed to the horizontal longitudinal reinforcement 3.

[0074] In a specific example, the connection between the through-wall reinforcement 4 and the horizontal longitudinal reinforcement 3 is typically secured by binding or welding to ensure reliable connection. Binding uses double-strand galvanized iron wire, while welding uses welding rods. Those skilled in the art will understand that the specific method of connection and fixation can be selected according to actual engineering needs, and other embodiments besides this one are also possible. In this embodiment, the effective connection between the through-wall reinforcement 4 and the horizontal longitudinal reinforcement 3 is a crucial element for the entire reinforcement system to function effectively; a reliable connection method can improve the overall performance of the reinforcement system.

[0075] In one embodiment, the provision of a reinforcing layer 2 on the surface of the existing wall 1 specifically includes: preparing the reinforcing layer 2 using a high-stability fiber-reinforced cementitious composite material; and using reinforcing layers 2 of different thicknesses for the existing walls 1 on different floors according to the stress conditions of different floors of the building. Specifically, on the lower floors of the building, where the load is greater, a thicker reinforcing layer 2 is usually used, and the thickness range can be set according to the actual situation; on the upper floors of the building, where the load is relatively smaller, a thinner reinforcing layer 2 is usually used, i.e., the thickness needs to be less than the thickness of the thicker reinforcing layer 2. In this embodiment, using reinforcing layers 2 of different thicknesses according to the stress conditions of different floors can optimize resource allocation and improve the reinforcement effect and economic benefits.

[0076] In this embodiment, thorough preparation work should be carried out before the reinforcement project begins. Specifically, priority should be given to unloading the original structural components except for their own weight. When the load on a component is mainly due to its own weight, a reaction frame should be used for unloading. The original building floor construction methods need to be removed, and the reinforcement should be completed before reconstructing according to the new construction methods. If cracks, corrosion, rust, aging, or inconsistencies with the drawings are found in the original structural components during the reinforcement project, the extent of the structural damage should be recorded and inspected, reported to the designer, and the relevant reinforcement and repair work can only continue after obtaining the designer's approval.

[0077] Preferably, the principles of overall reinforcement and its requirements should be fully understood before reinforcement construction. If partial structural demolition requires prior reinforcement, the demolition work can only proceed after the reinforced components have reached their design strength. In a specific example, proper treatment of the concrete pouring interface is essential during construction: roughening, thorough wetting, and grouting (or using other interface agents) to improve the quality and reliability of the connection surface. This treatment method can improve the bond strength between the old and new materials, enhancing the overall reinforcement effect.

[0078] In one embodiment, when constructing a brick wall reinforced with a high-stability fiber-reinforced cement-based composite material surface layer, the following sequence should be followed: First, perform base treatment, remove the original plaster layer, clean the mortar joints, brush away residual mortar with a wire brush, and blow away surface dust; perform joint preparation on the horizontal mortar joints of the wall to be reinforced, with the vertical spacing between adjacent joints not exceeding, for example, 300mm (the specific dimensions can be set according to the actual situation), and the joint depth not less than, for example, 15mm (the specific dimensions can be set according to the actual situation), and set shear-resistant square holes; thoroughly wet the wall surface with water, and proceed with construction after the surface of the component is moist but without standing water. Subsequently, set markers to ensure that the surface layer thickness meets the requirements. Before spraying / pressing the high-stability fiber-reinforced cement-based composite material surface layer, the wall surface should be moistened with water back and forth, and the pressing should be performed after the wall surface is slightly dry. The thickness of a single application / spraying of high-stability fiber-reinforced cementitious composite material should not exceed, for example, 15 mm (the specific dimensions can be set according to actual conditions). When the surface layer thickness is greater than, for example, 15 mm (the specific dimensions can be set according to actual conditions), it is advisable to apply it in layers. The time interval between the application of the first layer and subsequent layers should not exceed, for example, 4 hours (the specific time can be set according to actual conditions). In this embodiment, this layered construction method can improve the quality and performance of the reinforced surface layer 2 and enhance the bonding effect with the original wall 1.

[0079] Preferably, water curing should be carried out promptly after the final setting of the high-stability fiber-reinforced cementitious composite material, and the curing time should not be less than the first predetermined number of days, such as 7 days (the specific time can be set according to the actual situation). When the average daily temperature is lower than the predetermined temperature, such as 10°C, the curing time should not be less than, for example, 14 days. Sufficient curing is crucial for the strength development of the high-stability fiber-reinforced cementitious composite material and can improve the performance and durability of the reinforced surface layer 2.

[0080] In this embodiment, if the original concrete structure exhibits defects such as looseness, damage, or severe carbonation, repair treatment should be carried out. First, the defective area should be cleaned down to a solid base layer and thoroughly soaked with water before being repaired using Grade A adhesive. For large-volume defects, grouting can also be used for repair. If exposed rebar or rebar corrosion is present, the damaged concrete around the rebar should be removed first, the rebar should be derusted and cleaned, and then repaired using high-stability fiber-reinforced cementitious composite material. When rebar corrosion is severe or there is a large area of ​​exposed rebar or rebar corrosion, the design unit should be notified for handling. This repair treatment of defects in the original structure can improve the quality and performance of the original structure, providing a good foundation for subsequent reinforcement work.

[0081] Preferably, the protection of the reinforced surface layer 2 should be selected according to the environmental conditions. Steel-bonded or carbon fiber reinforced components in harsher environments should be protected with a 50mm thick concrete protective layer, the specific dimensions of which can be determined based on actual conditions. The protection of the reinforced portion must meet the relevant fire resistance rating requirements. Surface protection should only be applied after the adhesive has completely cured. This protective measure can improve the durability and safety of the reinforced structure and extend the service life of the reinforcement.

[0082] In a specific example, a concrete reinforcement method is demonstrated as follows:

[0083] 1. For cases involving both longitudinal and transverse walls, the reinforcement methods are as follows: Figure 1 A reinforced surface layer 2 is installed on both sides of the longitudinal and transverse walls.

[0084] 2. For cases with a single longitudinal wall and two transverse walls, the reinforcement method is as follows: Figure 2 Simply install a reinforcement layer 2 on one side of the longitudinal wall (the side with the transverse wall) and on both sides of the transverse wall.

[0085] 3. For cases involving a single exterior wall along a longitudinal direction, the reinforcement method is as follows: Figure 3 Only one side of the longitudinal wall needs to be reinforced with a surface layer 2.

[0086] 4. For cases with two sides of a transverse wall, the reinforcement method is as follows: Figure 4 Simply install a reinforced surface layer 2 on both sides of the transverse wall, wherein the reinforced surface layer 2 has a stepped structure.

[0087] 5. For cases involving only one side of a transverse wall, the reinforcement method is as follows: Figure 5 Only one side of the transverse wall needs to be reinforced with a layer 2, which has a stepped structure.

[0088] 6. For cases involving only the inner side of a longitudinal wall, the reinforcement method is as follows: Figure 6Simply install a reinforcing layer 2 on the inner side of one side of the longitudinal wall, wherein the reinforcing layer 2 has a stepped structure. The shape of the reinforcing layer 2 can be obtained by rotating it 90 degrees to obtain the shape of the reinforcing layer 2 mentioned in point 5 above.

[0089] 7. For situations where the opening is located on both sides of the wall, the reinforcement method is as follows: Figure 7 Simply install a reinforced surface layer 2 on all surfaces of the wall where the opening is located.

[0090] 8. For cases where the opening is located on only one side of the wall, the reinforcement method is as follows: Figure 8 All that is needed is to install a reinforcing layer 2 on one side of the wall where the opening is located, wherein the reinforcing layer 2 has an L-shaped structure.

[0091] 9. For roof situation one, the reinforcement method is as follows: Figure 9 A reinforcing surface layer 2 is provided on both sides of the original wall 1 (in this embodiment, the original wall 1 refers to the original wall 1). Horizontal longitudinal bars 3 are provided in the reinforcing surface layer 2 on both sides of the original wall 1. The through-wall bars 4 are in the shape of a straight line. The through-wall bars 4 are perpendicular to the reinforcing surface layer 2. The through-wall bars 4 pass through the original wall 1, and their two ends are respectively tied to the horizontal longitudinal bars 3 on both sides of the original wall 1.

[0092] 10. For the second scenario involving the roof, the reinforcement method is as follows: Figure 10 A reinforcing layer 2 is provided on both sides of the original wall 1, and horizontal longitudinal reinforcement 3 is provided in the reinforcing layer 2 on both sides of the original wall 1. The through-wall reinforcement 4 is U-shaped and has a first segment, a second segment and a third segment connected in sequence. The second segment passes through the original wall 1 and its two ends are respectively tied to the horizontal longitudinal reinforcement 3 on both sides of the original wall 1. The first segment and the third segment are respectively located in the reinforcing layer 2 on both sides of the original wall 1, and the ends of the first segment and the third segment away from the second segment extend from the reinforcing layer 2 into the board joint.

[0093] 11. For the third scenario involving the roof, the reinforcement method is as follows: Figure 11 A reinforcement layer 2 is provided on one side of the original wall 1, that is, in the corner area of ​​the original wall 1, the horizontal longitudinal reinforcement 3 is located in the reinforcement layer 2 on one side of the original wall 1; the through-wall reinforcement 4 is L-shaped, with a first segment and a second segment connected in sequence; one end of the second segment is located in the original wall 1, and the other end extends to the outside of the original wall 1 and is connected to the horizontal longitudinal reinforcement 3; the first segment is located in the reinforcement layer 2, and the end of the first segment away from the second segment extends from the reinforcement layer 2 into the floor slab.

[0094] 12. For roof situation four, the reinforcement method is as follows: Figure 12A reinforcing layer 2 is provided on both sides of the original wall 1, and horizontal longitudinal reinforcement 3 is provided in the reinforcing layer 2 on both sides of the original wall 1. The through-wall reinforcement 4 is U-shaped and has a first segment, a second segment, a third segment and a fourth segment connected in sequence. The second segment and the fourth segment are arranged in parallel and are both located in the original wall 1. The two ends of the second segment extend into the reinforcing layer 2 on both sides of the original wall 1 and are connected to one end of the first segment and the third segment respectively. The first segment and the third segment are located in the reinforcing layer 2 on both sides of the original wall 1. The two ends of the fourth segment extend into the reinforcing layer 2 on both sides of the original wall 1 and are connected to the other end of the first segment and the third segment respectively.

[0095] 13. For situations one and two regarding interior walls and floors, the reinforcement methods are as follows: Figure 13 and Figure 14 A reinforcing layer 2 is provided on both sides of the original wall 1, and horizontal longitudinal reinforcement 3 is provided in the reinforcing layer 2 on both sides of the original wall 1. The through-wall reinforcement 4 is U-shaped and has a first segment, a second segment, a third segment and a fourth segment connected in sequence. The second segment and the fourth segment are arranged in parallel and are both located in the original wall 1. The two ends of the second segment extend into the reinforcing layer 2 on both sides of the original wall 1 and are connected to one end of the first segment and the third segment respectively. The first segment and the third segment are located in the reinforcing layer 2 on both sides of the original wall 1. The two ends of the fourth segment extend into the reinforcing layer 2 on both sides of the original wall 1 and are connected to the other end of the first segment and the third segment respectively. The first segment and the third segment are located in the reinforcing layer 2 on both sides of the original wall 1 and pass through the floor slab.

[0096] 14. For the third scenario involving interior walls and floors, the reinforcement method is as follows: Figure 15 The reinforcement method can refer to the roof situation described above.

[0097] 15. For the fourth scenario involving interior walls and floors, the reinforcement method is as follows: Figure 16 For reinforcement methods, please refer to section four of the above-mentioned roof conditions.

[0098] 16. For exterior wall conditions one, two, and three, the reinforcement methods are as follows: Figures 17-19 Specifically, for the area where the original wall 1 meets the floor slab, the horizontal longitudinal reinforcement 3 is located in the reinforcement layer 2 on one side of the original wall 1 and on both sides of the floor slab; the through-wall reinforcement 4 is in the shape of a straight line, parallel to the reinforcement layer 2 and located in the reinforcement layer 2 on one side of the original wall 1, and the through-wall reinforcement 4 passes through the floor slab and its two ends are respectively tied to the horizontal longitudinal reinforcement 3 on both sides of the floor slab.

[0099] 17. For scenario four involving the exterior wall, the reinforcement method is as follows: Figure 20 The reinforcement method can be referred to in section three above for roof conditions. For section five for exterior walls, the reinforcement method is as follows:Figure 21 As shown. The reinforced surface layer 2 on both sides of the original wall 1 extends to both sides of the ring beam of the original wall 1.

[0100] 18. For the foundation reinforcement of the exterior wall, it can be as follows: Figure 22 and Figure 23 As shown, a reinforced surface layer 2 is installed on both sides of the original wall 1.

[0101] 19. The method for treating wall joint interfaces (i.e., joint sealing and setting of shear-resistant square holes) is as follows: Figure 24 As shown, the wall surface is thoroughly wetted with water, and construction begins after the surface of the component is moistened but without standing water. Markings are then placed to ensure the surface layer thickness meets requirements. Before spraying / applying the high-stability fiber-reinforced cement-based composite surface layer, the wall surface should be moistened with water back and forth, and appliquéd after it has slightly dried. The thickness of a single application / spraying of the high-stability fiber-reinforced cement-based composite material should not exceed, for example, 15mm (the specific dimensions can be set according to actual conditions). When the surface layer thickness is greater than, for example, 15mm (the specific dimensions can be set according to actual conditions), it is advisable to apply it in layers. The time interval between the application of the first layer and subsequent layers should not exceed, for example, 4 hours (the specific time can be set according to actual conditions). In this embodiment, this layered construction method can improve the quality and performance of the reinforced surface layer 2 and enhance the bonding effect with the original wall 1.

[0102] 20. Regarding the reinforcement methods for the floor surface, such as... Figure 25 and Figure 26 As shown, the ring beams, structural columns, diagonal braces, and ground ring beams on the floor are all made of high-stability fiber-reinforced cement-based composite materials, and are all reinforced surface layers 2.

[0103] 21. Regarding the reinforcement method for strip 5: the first method, such as... Figure 27 As shown, an L-shaped structural strip 5 is installed in the corner area of ​​the existing wall 1. The second method, as shown... Figure 28 As shown, the wall surface is adjusted with a tight joint across the entire width, and strip 5 is installed with horizontal tie bars. The third method, as... Figure 29 As shown, strip 5 extends to the floor slab ring beam (i.e., the original wall 1 ring beam), and a reliable connection is formed by shear pins. The fourth type, as... Figure 30 and Figure 31 As shown, strips 5 can be installed on one or both sides of the existing wall 1 as needed, and connected by through-wall nails to form an integral system. Among them, strips 5 are made of high-stability fiber-reinforced cement-based composite material, which is one form of reinforcement of surface layer 2.

[0104] In this embodiment, the original wall 1 is first comprehensively inspected and evaluated based on the actual condition of the building structure to determine the areas requiring reinforcement and the reinforcement plan. The surface of the original wall 1 is treated, including removing the plaster layer, cleaning the mortar joints, removing imperfections, and setting shear-resistant square holes, ensuring good mechanical interlocking between the reinforced surface layer 2 and the original wall 1. Then, appropriate connection structures are selected and installed according to different areas of the original wall 1: In the wall surface area, straight through-wall reinforcement bars 4 and horizontal longitudinal reinforcement bars 3 are installed, with the through-wall reinforcement bars 4 vertically passing through the original wall 1 to connect the horizontal longitudinal reinforcement bars 3 on both sides; in the area where the original wall 1 intersects with the floor slab, straight, U-shaped, or rectangular through-wall reinforcement bars 4 and horizontal longitudinal reinforcement bars 3 are installed, extending into the floor slab to enhance the connection; in the corner area of ​​the original wall 1, L-shaped through-wall reinforcement bars 4 and horizontal longitudinal reinforcement bars 3 are installed to form an effective corner connection.

[0105] After the connecting structure is installed, a reinforced surface layer 2 made of high-stability fiber-reinforced cementitious composite material is applied to the surface of the original wall 1 using spraying or troweling methods, forming an integrated load-bearing system with the connecting structure. For the original wall 1 on different floors, the thickness of the reinforced surface layer 2 is used according to the stress conditions; a thicker layer is typically used for lower floors, and a thinner layer for upper floors. Finally, thorough curing and protective treatment are performed to ensure that the reinforced surface layer 2 meets the design strength and durability requirements. The entire reinforcement system forms a tightly integrated and collaborative working system through the connecting structure, thereby improving the seismic performance, shear strength, and overall stability of the original wall 1.

[0106] In summary, the existing wall reinforcement system and method proposed in this invention have the following advantages:

[0107] By setting up dedicated connection structures for wall areas, the junction areas between existing walls and floor slabs, and the corner areas of existing walls, and combining the reinforced surface layer with the existing walls to form an integrated collaborative working system, the overall performance and connection reliability of the existing wall reinforcement system can be improved, the stability and safety of the building structure can be enhanced, and the complex and ever-changing building environment and load conditions can be effectively coped with.

[0108] Furthermore, by using high-stability fiber-reinforced cementitious composite materials to prepare the reinforced surface layer, and by employing reinforced surface layers of varying thicknesses according to the stress conditions of different floors in the building, the strength and toughness of the reinforced material can be improved, reducing the risk of cracking in the reinforced surface layer. Simultaneously, combining different types of through-wall reinforcement (I-shaped, U-shaped, L-shaped, and square-shaped) with horizontal longitudinal reinforcement can enhance the connection strength between the original wall and the reinforced surface layer, improve overall collaborative performance, extend the building's service life, and reduce maintenance costs.

[0109] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A system for integrally reinforcing existing walls, characterized in that, It includes a reinforced surface layer and a connecting structure; the reinforced surface layer is disposed on the surface of the original wall; the reinforced surface layer is connected to the original wall through the connecting structure; the connecting structure is used to achieve reinforced connection of the wall area, the junction area between the original wall and the floor slab, and the corner area of ​​the original wall.

2. The original wall reinforcement system as described in claim 1, characterized in that, The material of the reinforced surface layer includes fiber-reinforced cement-based composite material.

3. The original wall reinforcement system as described in claim 1, characterized in that, The connection structure includes horizontal longitudinal bars and through-wall bars; the horizontal longitudinal bars are provided in the reinforcement layer on both sides of the original wall; the through-wall bars are in the shape of a straight line, the through-wall bars are perpendicular to the reinforcement layer, the through-wall bars pass through the original wall, and both ends are connected to the horizontal longitudinal bars on both sides of the original wall.

4. The original wall reinforcement system as described in claim 1, characterized in that, The connection structure includes horizontal longitudinal bars and through-wall bars; the horizontal longitudinal bars are located within the reinforced surface layer on one side of the original wall and on both sides of the floor slab; the through-wall bars are straight, parallel to the reinforced surface layer and located within the reinforced surface layer on one side of the original wall, and pass through the floor slab with both ends connected to the horizontal longitudinal bars on both sides of the floor slab.

5. The original wall reinforcement system as described in claim 1, characterized in that, The connecting structure includes horizontal longitudinal bars and through-wall bars; the horizontal longitudinal bars are provided in the reinforced surface layer on both sides of the original wall; the through-wall bars are U-shaped and have a first segment, a second segment, and a third segment connected in sequence; the second segment passes through the original wall and its two ends are respectively tied to the horizontal longitudinal bars on both sides of the original wall; the first segment and the third segment are respectively located in the reinforced surface layer on both sides of the original wall, and the ends of the first segment and the third segment away from the second segment extend from the reinforced surface layer into the joint between the boards.

6. The original wall reinforcement system as described in claim 1, characterized in that, The connection structure includes horizontal longitudinal bars and through-wall bars; in the corner area of ​​the original wall, the horizontal longitudinal bars are located within the reinforced surface layer on one side of the original wall; the through-wall bars are L-shaped, having a first segment and a second segment connected in sequence; one end of the second segment is located in the original wall, and the other end extends out of the original wall to be connected with the horizontal longitudinal bars; the first segment is located within the reinforced surface layer, and the end of the first segment away from the second segment extends from within the reinforced surface layer into the floor slab.

7. The original wall reinforcement system as described in claim 1, characterized in that, The connecting structure includes horizontal longitudinal bars and through-wall bars; the horizontal longitudinal bars are provided in the reinforced surface layer on both sides of the original wall; the through-wall bars are U-shaped, having a first segment, a second segment, a third segment, and a fourth segment connected in sequence; the second segment and the fourth segment are arranged in parallel and are both located in the original wall, with both ends of the second segment extending into the reinforced surface layer on both sides of the original wall and connecting to one end of the first segment and the third segment respectively; the first segment and the third segment are located in the reinforced surface layer on both sides of the original wall; both ends of the fourth segment extend into the reinforced surface layer on both sides of the original wall and connect to the other end of the first segment and the third segment respectively.

8. The original wall reinforcement system as described in claim 7, characterized in that, In the area where the original wall meets the floor slab, the first and third segments are located within the reinforced surface layer on both sides of the original wall and pass through the floor slab.

9. A method for integrally reinforcing an existing wall, using the integral reinforcement system for existing walls as described in any one of claims 1-8, characterized in that, Specifically, it includes the following: Different types of connection structures are installed on the existing walls depending on the different existing wall areas; A reinforcing layer is installed on the surface of the existing wall, and the reinforcing layer is connected to the existing wall through the connecting structure.

10. The method for overall reinforcement of the existing wall as described in claim 9, characterized in that, The installation of different types of connection structures on the existing wall specifically includes: installing straight through-wall bars and horizontal longitudinal bars in the wall area; installing straight, U-shaped, or square-shaped through-wall bars and horizontal longitudinal bars in the area where the existing wall meets the floor slab; and installing L-shaped through-wall bars and horizontal longitudinal bars in the corner area of ​​the existing wall; wherein the ends of the through-wall bars are tied and fixed to the horizontal longitudinal bars. The provision of a reinforcement layer on the surface of the existing wall specifically includes: preparing the reinforcement layer using fiber-reinforced cement-based composite material; and using reinforcement layers of different thicknesses on the existing walls of different floors according to the stress conditions of different floors of the building.

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