A building wall restoration system and method of restoration thereof

Abstract

This invention belongs to the field of wall repair, specifically relating to a building wall repair system and method. The building wall repair system includes: a first pressure strip extending along and covering a first direction joint, its width direction spanning the first direction joint to connect the walls on both sides; the first pressure strip is fixed to the wall by a first fixing component and has a first connecting portion thereon; and a second pressure strip extending along and covering a second direction joint, its width direction spanning the second direction joint to connect the walls on both sides; the second pressure strip is fixed to the wall by a second fixing component and has a second connecting portion thereon; the first connecting portion and the second connecting portion can connect to each other at the intersection of the first and second pressure strips. This invention achieves multi-directional coordinated force and phased, progressive wall repair.

Description

Technical Field

[0001] This invention belongs to the field of wall repair, specifically relating to a building wall repair system and its repair method. Background Technology

[0002] The walls of existing buildings are mostly composed of prefabricated wall panels, with intersecting first-direction and second-direction joints between adjacent panels. As the years of use increase, due to factors such as foundation settlement, temperature changes, material aging, and external loads, the joints become weak points in the wall structure. Problems such as relative misalignment of the wall panels on both sides of the joint and joint opening and deformation are common, seriously affecting the integrity, load-bearing safety, and functionality of the wall.

[0003] For the repair of building wall joints, existing technologies mainly employ reinforcement by pasting strips or panels along the joint in a single direction. This involves anchoring the strips on both sides of the joint and covering the joint surface to suppress deformation. Some repair solutions also involve covering the entire wall surface with a protective layer, such as the reinforcement device disclosed in Chinese patent CN216198137U, which uses fasteners such as connecting sleeves, threaded rods, and pins to fix a reinforcing steel plate to the wall surface; this falls under the category of fastening or connecting technologies for fixing building components. These solutions can alleviate joint defects to some extent and restore the local load-bearing capacity of the wall.

[0004] However, existing repair technologies still have the following shortcomings in practical applications: First, the reinforcement effect is limited to one direction, and the overall load-bearing capacity of the wall under bidirectional loads is only slightly improved, making it difficult to cope with complex stress conditions; Second, the long-term reliability of surface layer repair is poor, and stress concentration and surface layer peeling are prone to occur under continuous loads or deformation; Third, the repair mode is mostly a one-time intervention, lacking design considerations for phased implementation, and subsequent upgrade repairs are complex and costly.

[0005] Therefore, there is an urgent need for a building wall repair solution that takes into account both multi-directional synergistic stress and phased, progressive implementation, so as to improve the overall load-bearing capacity in both directions, facilitate subsequent repair and upgrades, and reduce the total life-cycle repair cost. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a building wall repair system and repair method. By interconnecting a first strip extending along a first direction joint and a second strip extending along a second direction joint at their intersection through a first connecting part and a second connecting part, a grid-like reinforcing structure spanning all joints is formed, realizing multi-directional synergistic force bearing and phased progressive wall repair.

[0007] This invention provides a building wall repair system for repairing building walls having a first-direction joint and a second-direction joint, wherein the first-direction joint and the second-direction joint intersect, and at least one of them has at least two joints, comprising: A first pressure strip extends along the first direction joint and covers the joint, and its width direction spans the first direction joint to connect the walls on both sides. The first pressure strip is fixed to the wall by a first fixing component and has a first connecting part thereon. The second pressure strip extends along the second direction joint and covers the joint. Its width direction spans the second direction joint to connect the walls on both sides. The second pressure strip is fixed to the wall by a second fixing component and has a second connecting part. The first connecting part and the second connecting part can be connected to each other at the intersection of the first pressure strip and the second pressure strip. In this configuration, the first pressure strip has two ends that intersect with two adjacent second pressure strips along its own extension direction and are connected to the second pressure strips through the first connecting part, and / or the second pressure strip has two ends that intersect with two adjacent first pressure strips along its own extension direction and are connected to the second connecting part through the first connecting part, so that the first pressure strip and the second pressure strip form a grid-like reinforcing structure on the wall surface.

[0008] In one embodiment, the first fixing component includes bolts that pass through the first pressure strip and are anchored in the walls on both sides of the first directional joint; And / or, the second fixing component includes bolts that pass through the second pressure strip and are anchored in the wall on both sides of the second directional joint.

[0009] In one embodiment, grout is filled between the first strip and the wall and / or between the second strip and the wall, and the grout, after curing, bonds the strip and the wall together as a whole.

[0010] In one embodiment, the first pressure strip has a first rubber pressure strip extending along its edge on the side facing the wall, and / or the second pressure strip has a second rubber pressure strip extending along its edge on the side facing the wall, the first rubber pressure strip and / or the second rubber pressure strip being pressed between the pressure strip and the wall to form a sealed space between the pressure strip and the wall for accommodating the grout.

[0011] In one embodiment, the first connecting portion and the second connecting portion are mutually cooperating overlapping limiting structures, and / or, the first connecting portion and the second connecting portion include mutually cooperating bolt connection structures.

[0012] In one embodiment, the first pressure strip is composed of multiple strips connected in series along the same first direction joint, or the second pressure strip is composed of multiple strips connected in series along the same second direction joint; when the wall is a planar structure, adjacent pressure strips are connected to each other through a connecting structure; when the wall is a ring structure, the first direction joint or the second direction joint is a ring joint, and multiple first pressure strips or second pressure strips connected in series along the same ring joint abut each other end to end.

[0013] In one embodiment, the number of the first pressure strip is at least two, the number of the second pressure strip is at least two, and adjacent first pressure strips and second pressure strips form at least one closed cavity on the wall surface; It also includes a pressure plate that covers the enclosed cavity and is fixedly connected to the first pressure strip and / or the second pressure strip and / or the wall to form a planar reinforcement structure.

[0014] In one embodiment, the pressure plate is connected to the wall by bolts and / or grout.

[0015] The present invention also provides a method for repairing building walls, using the above-described building wall repair system with a grid-like reinforcement structure, comprising the following steps: The first strip extends along the first direction joint and covers the joint, so that its width direction spans the first direction joint to connect the walls on both sides, and the first strip is fixed to the wall by the first fixing component. The second strip extends along the second direction joint and covers the joint, so that its width direction spans the second direction joint to connect the walls on both sides, and the second strip is fixed to the wall by the second fixing component; The first pressure strip and the second pressure strip are connected to each other at their intersection through the first connecting part and the second connecting part, such that at least one first pressure strip is connected to two adjacent second pressure strips at both ends along its own extension direction, and / or at least one second pressure strip is connected to two adjacent first pressure strips at both ends along its own extension direction, thereby forming a grid-like reinforcing structure.

[0016] The present invention also provides a method for repairing building walls, using the above-described building wall repair system for surface reinforcement structures, comprising the following steps: The first strip extends along the first direction joint and covers the joint, so that its width direction spans the first direction joint to connect the walls on both sides, and the first strip is fixed to the wall by the first fixing component. The second strip extends along the second direction joint and covers the joint, so that its width direction spans the second direction joint to connect the walls on both sides, and the second strip is fixed to the wall by the second fixing component; The first pressure strip and the second pressure strip are connected to each other at their intersection through the first connecting part and the second connecting part, so that at least two first pressure strips and at least two second pressure strips form at least one closed cavity on the wall surface. The pressure plate is used to cover the enclosed cavity, and the pressure plate is fixedly connected to the first pressure strip and / or the second pressure strip and / or the wall.

[0017] The beneficial effects of this invention are: The building wall repair system provided in this embodiment achieves a multi-layered, progressive wall repair effect through the cooperation of the first pressure strip 1 and the second pressure strip 2 and their connecting structure, specifically in the following aspects: First, the single-strip independent repair effect. The first strip 1 extends independently along the joint 101 in the first direction and is fixed to the walls 10 on both sides of the joint by the first fixing component 11, thus forming a repair strip extending along the first direction. When used independently, the single strip can effectively suppress the relative misalignment and opening deformation of the walls on both sides of the joint in that direction, restoring the overall continuity of the wall along that direction. Similarly, the second strip 2 extends independently along the joint 102 in the second direction, forming a repair strip extending along the second direction independently. The installation of the repair strip does not require waiting for the completion of the strips in other directions; it can perform structural repair functions in advance, giving the system a flexible repair capability that can be implemented on demand and achieve results step by step.

[0018] Secondly, it features a reserved grid construction capability. The first pressure strip 1 has first connecting parts 4 at both ends along its extension direction. These first connecting parts 4 are reserved when the pressure strip is used independently and do not affect the normal function of the repair strip. When the wall damage further develops and a higher level of repair is required, a second pressure strip 2 can be connected to the already installed first pressure strip 1. Through the interconnection of the first connecting parts 4 and the second connecting parts 5, the originally independently functioning repair strips in each direction are interconnected into a spatial grid-like reinforced structure. This grid structure couples the forces in the first and second directions, allowing external forces to be efficiently transferred and distributed between the bidirectional pressure strips, avoiding stress concentration.

[0019] Most importantly, compared to independent and unconnected repair strips, the bidirectional synergistic stiffness of the grid structure is not simply the sum of the stiffnesses of individual repair strips. In the independent repair strip scheme, each strip only bears the local load at the covered joint, and the load is transmitted linearly along the single strip direction. Repair strips in different directions work independently and cannot form an effective load sharing. However, in the grid structure, the first connecting part 4 and the second connecting part 5 lock the longitudinal and transverse strips at the nodes, and the load transmission path changes from linear to grid-like. Loads in any direction can be diffused and transmitted to strips in other directions through the nodes, enabling all components in the entire structural system to participate in the stress collaboratively, and significantly improving the structural load-bearing efficiency. This grid coupling effect results in a multiplied increase in the overall deformation stiffness of the repair system under bidirectional loads, significantly improving the collaborative load-bearing capacity of the wall under complex stress conditions. This effect is not achieved by traditional independent repair strips or direct overall coverage of the repair surface.

[0020] Furthermore, when both ends of the first pressure strip 1 are connected to the second pressure strip 2, and both ends of the second pressure strip 2 are connected to the first pressure strip 1, the resulting H-shaped or even grid-like mesh structure exhibits superior mechanical closure compared to T-shaped or L-shaped intersecting structures with only one end connected. T-shaped or L-shaped connections only form local node constraints; after the load is transferred to the node, it continues to be transmitted in a single direction, without forming a closed loop, resulting in an open force transmission path. In contrast, in an H-shaped or grid-like mesh, at least one pressure strip is constrained at both ends by adjacent pressure strips, and the longitudinal and transverse pressure strips are mutually locked at multiple nodes, forming a closed force flow loop. The load can be circulated and self-distributed along multiple paths within the mesh. When a node or pressure strip experiences excessive local stress, adjacent pressure strips share the load through the dual constraints of the nodes at both ends, effectively avoiding single-point stress concentration and significantly enhancing the redundancy and robustness of the structure. This grid coupling effect results in a multiplied increase in the overall deformation stiffness of the repair system under bidirectional loads, significantly improving the collaborative bearing capacity of the wall under complex stress conditions. This effect is not achieved by traditional independent repair strips or direct overall coverage of the repair surface.

[0021] Third, it provides a foundation for surface reinforcement. The grid structure formed by the interconnection of the first pressure strip 1 and the second pressure strip 2 encloses multiple closed grid-shaped areas on the wall surface. This grid structure itself can serve as the basic framework for subsequent surface reinforcement layers, providing structured overlapping support and positioning references for panels, pressure plates, or surface repair components covering the entire wall area. Surface reinforcement components can be directly attached to the grid structure, forming a continuous and uniform support surface within the grid, ensuring uniform stress and reliable connection of the surface reinforcement layer. This achieves a progressive and complete repair path from "from strip to grid" to "from grid to surface," with repair components nested and superimposed layer by layer. Lower-stage components can directly support higher-stage repair components without removal, realizing component reuse and phased incremental repair. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the first angle structure of the first pressure strip in this invention; Figure 2 This is a schematic diagram of the second angle structure of the first pressure strip in this invention; Figure 3 This is a top view of the first pressure strip in this invention; Figure 4 This is a schematic diagram of the installation of the first pressure strip in this invention; Figure 5 This is a schematic diagram of the first angle structure of the second pressure strip in this invention; Figure 6 This is a schematic diagram of the second angle structure of the second pressure strip in this invention; Figure 7 This is a front view of the second pressure strip in this invention; Figure 8 This is a side view of the second pressure strip in this invention; Figure 9 This is a schematic diagram of the installation of the first and second pressure strips in this invention; Figure 10 This is a schematic diagram of the first angle structure of the pressure plate in this invention; Figure 11 This is a schematic diagram of the second angle structure of the pressure plate in this invention; Figure 12 This is a top view of the pressure plate in this invention; Figure 13 This is a schematic diagram showing the installation of the first pressure strip, the second pressure strip, and the pressure plate in this invention; Figure 14 for Figure 13 A magnified view of a portion of the image.

[0023] In the figure, 1-first pressure strip; 11-first fixing component; 2-second pressure strip; 21-second fixing component; 3-bolt; 4-first connecting part; 41-stepped overlapping joint; 42-first connecting hole; 5-second connecting part; 51-overlapping surface; 52-second connecting hole; 6-first rubber pressure strip; 7-second rubber pressure strip; 8-pressure plate; 10-wall; 101-first direction joint; 102-second direction joint. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0026] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0029] like Figures 1-14 As shown, the present invention discloses a building wall repair system for repairing building walls having a first direction joint 101 and a second direction joint 102. The first direction joint 101 and the second direction joint 102 intersect, and at least one of them has at least two joints. For example, the building wall is spliced ​​together from multiple prefabricated wall panels, and a first direction joint 101 and a second direction joint 102 are formed between adjacent wall panels. The two types of joints intersect each other, and at least one type of joint has at least two joints. For example, the wall 10 has two parallel first direction joints 101 and one intersecting second direction joint 102.

[0030] This building wall repair system includes a first pressure strip 1 and a second pressure strip 2: A first pressure strip 1 extends along and covers the first direction joint 101, and its width direction spans across the first direction joint 101 to connect the walls 10 on both sides. The first pressure strip 1 is fixed to the wall 10 by a first fixing component 11, for example, by a plurality of first fixing components 11 spaced apart along the length direction of the pressure strip to press the pressure strip to the wall surface. The first pressure strip 1 is provided with a first connecting part 4, which is used to establish a connection with the second pressure strip 2.

[0031] The second pressure strip 2 extends along and covers the second direction joint 102, and its width crosses the second direction joint 102 to connect the two side walls 10. The second pressure strip 2 is fixed to the wall 10 by the second fixing component 21, and is provided with a second connecting part 5. The first connecting part 4 and the second connecting part 5 can be connected to each other at the intersection of the first pressure strip 1 and the second pressure strip 2. The intersection refers to the position where the first pressure strip 1 and the second pressure strip 2 cross and overlap on the wall surface. The first pressure strip 1 can be laid on the second pressure strip 2, or the second pressure strip 2 can be laid on the first pressure strip 1, or the first pressure strip 1 and the second pressure strip 2 can abut against each other. The two are structurally interconnected at this point through the connecting part.

[0032] Specifically, the first pressure strip 1 has two ends that intersect with two adjacent second pressure strips 2 along its own extension direction and are connected to the second connection part 5 through the first connection part 4, and / or the second pressure strip 2 has two ends that intersect with two adjacent first pressure strips 1 along its own extension direction and are connected to the second connection part 5 through the first connection part 4, so that the first pressure strip 1 and the second pressure strip 2 form a grid-like reinforcing structure on the surface of the wall 10; the grid-like reinforcing structure spans the first direction joint 101 and the second direction joint 102, connecting each wall panel into an integral load-bearing system.

[0033] The building wall repair system provided in this embodiment achieves a multi-layered, progressive wall repair effect through the cooperation of the first pressure strip 1 and the second pressure strip 2 and their connecting structure, specifically in the following aspects: First, the single-strip independent repair effect. The first strip 1 extends independently along the joint 101 in the first direction and is fixed to the walls 10 on both sides of the joint by the first fixing component 11, thus forming a repair strip extending along the first direction. When used independently, the single strip can effectively suppress the relative misalignment and opening deformation of the walls on both sides of the joint in that direction, restoring the overall continuity of the wall along that direction. Similarly, the second strip 2 extends independently along the joint 102 in the second direction, forming a repair strip extending along the second direction independently. The installation of the repair strip does not require waiting for the completion of the strips in other directions; it can perform structural repair functions in advance, giving the system a flexible repair capability that can be implemented on demand and achieve results step by step.

[0034] Secondly, it features a reserved grid construction capability. The first pressure strip 1 has first connecting parts 4 at both ends along its extension direction. These first connecting parts 4 are reserved when the pressure strip is used independently and do not affect the normal function of the repair strip. When the wall damage further develops and a higher level of repair is required, a second pressure strip 2 can be connected to the already installed first pressure strip 1. Through the interconnection of the first connecting parts 4 and the second connecting parts 5, the originally independently functioning repair strips in each direction are interconnected into a spatial grid-like reinforced structure. This grid structure couples the forces in the first and second directions, allowing external forces to be efficiently transferred and distributed between the bidirectional pressure strips, avoiding stress concentration.

[0035] Most importantly, compared to independent and unconnected repair strips, the bidirectional synergistic stiffness of the grid structure is not simply the sum of the stiffnesses of individual repair strips. In the independent repair strip scheme, each strip only bears the local load at the covered joint, and the load is transmitted linearly along the single strip direction. Repair strips in different directions work independently and cannot form an effective load sharing. However, in the grid structure, the first connecting part 4 and the second connecting part 5 lock the longitudinal and transverse strips at the nodes, and the load transmission path changes from linear to grid-like. Loads in any direction can be diffused and transmitted to strips in other directions through the nodes, enabling all components in the entire structural system to participate in the stress collaboratively, and significantly improving the structural load-bearing efficiency. This grid coupling effect results in a multiplied increase in the overall deformation stiffness of the repair system under bidirectional loads, significantly improving the collaborative load-bearing capacity of the wall under complex stress conditions. This effect is not achieved by traditional independent repair strips or direct overall coverage of the repair surface.

[0036] Furthermore, when both ends of the first pressure strip 1 are connected to the second pressure strip 2, and both ends of the second pressure strip 2 are connected to the first pressure strip 1, the resulting H-shaped or even grid-like mesh structure exhibits superior mechanical closure compared to T-shaped or L-shaped intersecting structures with only one end connected. T-shaped or L-shaped connections only form local node constraints; after the load is transferred to the node, it continues to be transmitted in a single direction, without forming a closed loop, resulting in an open force transmission path. In contrast, in an H-shaped or grid-like mesh, at least one pressure strip is constrained at both ends by adjacent pressure strips, and the longitudinal and transverse pressure strips are mutually locked at multiple nodes, forming a closed force flow loop. The load can be circulated and self-distributed along multiple paths within the mesh. When a node or pressure strip experiences excessive local stress, adjacent pressure strips share the load through the dual constraints of the nodes at both ends, effectively avoiding single-point stress concentration and significantly enhancing the redundancy and robustness of the structure. This grid coupling effect results in a multiplied increase in the overall deformation stiffness of the repair system under bidirectional loads, significantly improving the collaborative bearing capacity of the wall under complex stress conditions. This effect is not achieved by traditional independent repair strips or direct overall coverage of the repair surface.

[0037] Third, it provides a foundation for surface reinforcement. The grid structure formed by the interconnection of the first pressure strip 1 and the second pressure strip 2 encloses multiple closed grid-shaped areas on the wall surface. This grid structure itself can serve as the basic framework for subsequent surface reinforcement layers, providing structured overlapping support and positioning references for panels, pressure plates, or surface repair components covering the entire wall area. Surface reinforcement components can be directly attached to the grid structure, forming a continuous and uniform support surface within the grid, ensuring uniform stress and reliable connection of the surface reinforcement layer. This achieves a progressive and complete repair path from "from strip to grid" to "from grid to surface," with repair components nested and superimposed layer by layer. Lower-stage components can directly support higher-stage repair components without removal, realizing component reuse and phased incremental repair.

[0038] In one embodiment, the first fixing component 11 includes bolts 3. Specifically, a plurality of bolt holes are spaced apart along the length of the first pressure strip 1, and the bolts 3 pass through the bolt holes and are anchored in the walls 10 on both sides of the first direction joint 101. The bolts 3 are respectively arranged on both sides of the joint, pressing the first pressure strip 1 against the wall surface, so that a reliable shear-resistant connection is established between the first pressure strip 1 and the wall 10, effectively suppressing the relative misalignment of the walls on both sides of the joint along the first direction.

[0039] And / or, the second fixing component 21 includes bolts 3. Bolts 3 pass through the second pressure strip 2 and are anchored in the wall 10 on both sides of the second direction joint 102, pressing the second pressure strip 2 against the wall surface, realizing a shear-resistant connection between the second pressure strip 2 and the wall 10, and suppressing the relative misalignment of the walls on both sides of the joint along the second direction.

[0040] In this embodiment, the first fixing component 11 and the second fixing component 21 can be used individually or in combination. When only the first pressure strip 1 or the second pressure strip 2 is installed for independent single-strip repair, the corresponding fixing component can meet the anchoring requirements of the pressure strip; when the two are combined to form a grid structure, the first fixing component 11 and the second fixing component 21 work together to provide comprehensive anchoring support for the grid structure. The bolt connection construction process is mature and the quality control is simple. Drilling, implantation and fastening operations can be completed quickly under operating conditions with minimal disturbance to the original wall structure.

[0041] In one embodiment, grout is used to fill the gap between the first pressure strip 1 and the wall 10 and / or between the second pressure strip 2 and the wall 10. After curing, the grout bonds the pressure strip and the wall 10 together. Specifically, after the first pressure strip 1 is installed and initially fixed by the first fixing component 11, grout is injected into the gap between the first pressure strip 1 and the wall 10. The grout cures under curing conditions, bonding the lower surface of the first pressure strip 1 to the surface of the wall 10 as a single load-bearing section. Through the bonding effect of the grout, uniform force transmission is achieved across the entire contact surface between the first pressure strip 1 and the wall 10, compensating for local voids caused by uneven wall surfaces and significantly increasing the effective connection area between the pressure strip and the wall.

[0042] And / or, grout may also be used to fill the gap between the second pressure strip 2 and the wall 10. After the second pressure strip 2 is installed in place, grout is injected into the gap between the second pressure strip 2 and the wall 10, and after curing, the second pressure strip 2 and the wall 10 are bonded together as a whole.

[0043] In this embodiment, grout filling and bolt connection can be used in conjunction to form a dual connection mechanism of mechanical anchoring and chemical bonding. Bolts provide immediate mechanical anchoring force and installation positioning, while the cured grout provides continuous and uniform bonding force and load transfer path. The two work together to ensure that the strip and the wall have both immediate load-bearing capacity during construction and reliable durability for long-term use. When both the first strip 1 and the second strip 2 are filled with grout, a large-area integral bond is formed between the entire grid-like reinforcing structure and the wall 10. Each level of strip and the wall together form a composite load-bearing system, further improving the overall stiffness and seismic performance of the structure.

[0044] In one embodiment, the first pressure strip 1 has a first rubber pressure strip 6 extending along its edge on the side facing the wall 10, and / or the second pressure strip 2 has a second rubber pressure strip 7 extending along its edge on the side facing the wall 10. The first rubber pressure strip 6 and / or the second rubber pressure strip 7 are pressed between the pressure strip and the wall 10 to form a sealed space between the pressure strip and the wall 10 for accommodating the grouting material. Specifically, the first rubber pressure strip 6 is continuously arranged along the two long edges of the first pressure strip 1. When the first pressure strip 1 is fastened to the wall 10 by the first fixing component 11, the first rubber pressure strip 6 is compressed and pressed tightly against the surface of the wall 10, using the elastic deformation of the rubber material to fill the tiny gaps between the edge of the pressure strip and the wall, forming a reliable sealing boundary at the edge of the pressure strip. The sealing boundary, together with the bottom surface of the first pressure strip 1 and the surface of the wall 10, forms a closed receiving space. Grouting material can be injected into this space through the preset grouting hole on the first pressure strip 1. The grouting material flows and fills the sealed space fully and will not overflow or leak from the edge of the pressure strip.

[0045] Similarly, the second rubber strip 7 is continuously arranged along the two long edges of the second strip 2. Its structure and sealing principle are the same as those of the first rubber strip 6. When the second strip 2 is tightened, it is pressed between the strip and the wall 10 to form a sealed space for grouting material.

[0046] This embodiment offers the following technical advantages through the use of rubber strips: First, the rubber strips can adapt to local unevenness on the wall surface when compressed, eliminating the need for fine leveling of the existing wall and simplifying the construction process. Second, the sealed space provides a closed filling environment for the grout, ensuring that the grout can fully and densely fill all gaps between the strip and the wall after injection, avoiding voids caused by grout leakage and guaranteeing bonding quality. Third, after the grout has cured, the rubber strips and the grout together form a composite interface layer between the strip and the wall, possessing both the rigid bonding force of the grout and retaining the flexible sealing function of the rubber strip. This allows it to adapt to minor deformations and temperature stresses during long-term use, improving the durability of the repaired structure. When both the first strip 1 and the second strip 2 are equipped with rubber strips and interconnected at their intersections, the sealed spaces beneath each strip can be grouted independently or collaboratively as needed, further enhancing construction flexibility and overall repair quality.

[0047] In one embodiment, the first connecting part 4 and the second connecting part 5 are overlapping and limiting structures that cooperate with each other, and / or the first connecting part 4 and the second connecting part 5 include bolted connection structures that cooperate with each other.

[0048] Specifically, when the first connecting part 4 and the second connecting part 5 adopt an overlapping limiting structure, a stepped overlapping interface 41 can be provided at the end of the first pressure strip 1, and a corresponding overlapping surface 51 can be provided at the end of the second pressure strip 2. The two overlap and limit each other at the intersection through the stepped surfaces, realizing the positioning constraint of the first pressure strip 1 and the second pressure strip 2 at the intersection node; or, a groove can be provided at the end of the first pressure strip 1, and a protrusion that can be embedded in the groove can be provided at the end of the second pressure strip 2, realizing the overlapping interlocking of the two through the concave-convex fit. The overlapping limiting structure can quickly complete the on-site alignment and installation of the first pressure strip 1 and the second pressure strip 2 without additional fasteners, making construction simple and efficient. At the same time, the overlapping surface itself can transmit the shear force between the pressure strips, enhancing the load transfer capacity at the grid node.

[0049] When the first connecting part 4 and the second connecting part 5 adopt a bolted connection structure, a first connecting hole 42 penetrating the thickness direction can be opened at the end of the first pressure strip 1, and a corresponding second connecting hole 52 penetrating the thickness direction can be opened at the end of the second pressure strip 2. The bolt 3 passes through the first connecting hole 42 and the second connecting hole 52 on the first pressure strip 1 and the second pressure strip 2 in sequence and the nut is tightened, so that the first pressure strip 1 and the second pressure strip 2 are vertically pressed and interlocked at the intersection. The bolted connection structure can provide reliable preload force to ensure that the first pressure strip 1 and the second pressure strip 2 remain tightly connected during long-term use and avoid loosening of the joint due to vibration or deformation. At the same time, the bolt 3, as a detachable connector, facilitates the replacement or upgrading of local pressure strips according to the development of wall damage.

[0050] In this embodiment, the overlapping limiting structure and the bolted connection structure can be used alone or in combination. When the overlapping limiting structure is used alone, the installation process is the simplest and quickest, suitable for repair scenarios with minor damage and low requirements for node connection force; when the bolted connection structure is used alone, the node connection strength is high and the reliability is good, suitable for repair scenarios that need to transfer large loads or have high requirements for seismic performance; when the two are used in combination, the overlapping limiting structure provides installation positioning and initial shear resistance, while the bolted connection structure provides continuous clamping force and node stiffness. The two work together to form a rigid connection between the first pressure strip 1 and the second pressure strip 2 at the intersection node. External forces can be efficiently transmitted and distributed between the first and second directions through this node, further improving the overall stress performance of the grid-like reinforced structure.

[0051] In one embodiment, the first pressure strip 1 is composed of multiple strips connected in series along the same first direction joint 101, or the second pressure strip 2 is composed of multiple strips connected in series along the same second direction joint 102. When the wall 10 is a planar structure, adjacent pressure strips are connected to each other through a connecting structure. When the wall 10 is a ring structure, the first direction joint 101 or the second direction joint 102 is a ring joint, and the multiple first pressure strips 1 or second pressure strips 2 connected in series along the same ring joint abut each other end to end.

[0052] Specifically, when the wall 10 is a planar structure and the length of the first direction joint 101 is relatively large, the length of a single first pressure strip 1 may be limited by material specifications, transportation conditions, or construction operation space. In this case, multiple first pressure strips 1 can be arranged in series along the same first direction joint 101, with each first pressure strip 1 covering a section of the joint. The ends of adjacent first pressure strips 1 are connected to each other through a connecting structure, which can be a bolt connection, lap joint, or welding, to connect multiple pressure strips into a continuous integral repair strip extending along the joint direction. Similarly, the second direction joint 102 can also be arranged in series with multiple second pressure strips 2, with the ends of adjacent second pressure strips 2 connected through a connecting structure to form a repair strip extending continuously along the second direction joint.

[0053] When the wall 10 is a ring structure, such as a circular silo wall, a circular pool wall, or a tunnel lining wall, the first directional joint 101 or the second directional joint 102 is a ring joint extending in the circumferential direction. In this case, multiple first pressure strips 1, connected in series along the same ring joint, are connected end-to-end. The starting end of the first pressure strip and the ending end of the last pressure strip abut against each other at the closing point of the ring joint, forming a closed repair ring around the wall. Similarly, when the second directional joint 102 is a ring joint, multiple second pressure strips 2 are connected in series along the ring joint and abut against each other end-to-end to form a closed repair ring. The end-to-end abutment method eliminates the need for additional connectors at the closing point; the circumferential continuous force transmission of the pressure strip system can be achieved by utilizing the geometric closure of the ring structure itself.

[0054] This embodiment uses multiple pressure strips connected in series to enable the repair system to adapt to the actual working conditions of building walls of different scales: In planar walls, the series connection structure ensures continuous force between each pressure strip segment, avoids interruption of force due to segmented construction, and ensures the overall stiffness and load transfer capacity of the repair strip along the joint direction; In annular walls, the series connection method with the ends abutting each other forms a complete closed loop of circumferential force flow at the closing point, effectively constraining the overall deformation of the annular wall under radial load, giving full play to the circumferential constraint effect of the pressure strip system, and significantly improving the load-bearing stability of the annular wall structure.

[0055] In one embodiment, the number of the first pressure strip 1 is at least two, the number of the second pressure strip 2 is at least two, and adjacent first pressure strips 1 and second pressure strips 2 form at least one closed cavity on the surface of the wall 10. It also includes a pressure plate 8, which covers the enclosed cavity and is fixedly connected to the first pressure strip 1 and / or the second pressure strip 2 and / or the wall 10 to form a surface-reinforced structure.

[0056] Specifically, at least two first pressure strips 1 extend and cover the wall surface along parallel first direction joints 101, and at least two second pressure strips 2 extend and cover the wall surface along parallel second direction joints 102. At their intersection, they are connected by a first connecting part 4 and a second connecting part 5, thereby dividing the wall surface 10 into multiple enclosed cavity areas bound by the pressure strips. The pressure plate 8 is a planar component with a certain area, its outline matching the enclosed cavity. During installation, it covers the enclosed cavity, with its periphery overlapping the edges of the first and second pressure strips 1 and 2 that form the cavity. It is then fixedly connected to the first pressure strip 1 and / or the second pressure strip 2 and / or the wall 10 by bolts, adhesive, or grouting. Thus, the first pressure strip 1, the second pressure strip 2, and the pressure plate 8 together form a continuous planar reinforcement structure covering the wall surface, integrating the originally dispersed repair strips and repair nodes into a unified "repair surface."

[0057] The beneficial effects of this embodiment are as follows: the mesh reinforcement structure formed by the connection of the first pressure strip 1 and the second pressure strip 2 provides stable and continuous peripheral support and force transmission path for the pressure plate 8. Compared with conventional unconnected independent frames, in this embodiment, the first pressure strip 1 and the second pressure strip 2 achieve rigid interlocking through the connection part at the intersection node. The node can not only effectively transmit shear force, but also coordinate the pressure strips in two directions to share the force, making the mesh itself a whole skeleton with bidirectional stiffness. When the pressure plate 8 covers the closed cavity and is fixedly connected to the peripheral pressure strips, the out-of-plane load on the pressure plate 8 is efficiently transferred to the entire mesh structure through the peripheral pressure strips, avoiding local deformation and stress concentration caused by weak or missing frame nodes. At the same time, the internal cavity of the mesh provides a positioning reference and installation support surface for the pressure plate 8. The pressure plate 8 can be accurately embedded in the mesh area without the need for additional drilling or positioning on the wall, simplifying the construction process.

[0058] In one embodiment, the pressure plate 8 is connected to the wall 10 by bolts 3 and / or grout.

[0059] Specifically, when the pressure plate 8 is connected to the wall 10 via bolts 3, multiple bolt holes can be made on the pressure plate 8. After the bolts 3 pass through the bolt holes, they are anchored in the wall 10, pressing the pressure plate 8 tightly against the surface of the wall 10 corresponding to the closed cavity. The bolts 3 can be arranged along the periphery of the pressure plate 8 or in an array to ensure that the connection force between the pressure plate 8 and the wall 10 is evenly distributed. When the pressure plate 8 is connected to the wall 10 via grout, after the pressure plate 8 covers the closed cavity, grout can be injected into the gap between the pressure plate 8 and the wall 10. After the grout cures, it bonds the lower surface of the pressure plate 8 to the surface of the wall 10 to form an integral load-bearing section.

[0060] When the pressure plate 8 is connected using both bolts 3 and grout, a dual connection mechanism of mechanical anchoring and chemical bonding is formed: bolts 3 provide immediate clamping force and installation positioning, ensuring the stability of the pressure plate 8 before the grout cures; after the grout cures, it provides continuous and uniform bonding force, bonding the pressure plate 8, the first pressure strip 1, the second pressure strip 2, and the wall 10 into a spatial composite load-bearing whole. At this time, the mesh-like reinforcing skeleton formed by the first pressure strip 1 and the second pressure strip 2 is embedded in the grout layer between the pressure plate 8 and the wall 10. The skeleton undertakes the main structural reinforcement function, the pressure plate 8 provides surface coverage and load distribution functions, and the grout layer serves as an intermediate medium to achieve comprehensive bonding and integration of all components. This multi-layered composite structure significantly improves the out-of-plane bending stiffness, impact resistance, and overall synergistic load-bearing capacity of the wall repair system, achieving a progressive structural performance leap from "mesh reinforcement" to "comprehensive surface reinforcement." Furthermore, the installation of the pressure plate 8 relies entirely on the existing mesh structure foundation, requiring no removal or destructive operation of the already installed first pressure strip 1 and second pressure strip 2, thus realizing the complete reuse of components and phased incremental repair.

[0061] The present invention also provides a method for repairing building walls, using the above-described building wall repair system with a grid-like reinforcement structure, comprising the following steps: The first pressure strip 1 extends along the first direction joint 101 and covers the joint, so that its width direction spans the first direction joint 101 to connect the walls 10 on both sides. The first pressure strip 1 is fixed to the wall 10 by the first fixing component 11. Specifically, the surface of the building wall 10 to be repaired is first cleaned to ensure that the surface of the wall 10 on both sides of the first direction joint 101 is flat and free of loose materials. Then, the first pressure strip 1 is laid along the extension direction of the first direction joint 101 to cover the entire joint. The width direction of the first pressure strip 1 spans both sides of the joint, ensuring that the edges of the pressure strip are located on the walls 10 on both sides of the joint. The first pressure strip 1 is fixed to the wall 10 by the first fixing component 11. When fixing, force is applied at intervals along the length direction of the first pressure strip 1 to make the pressure strip evenly adhere to the wall surface.

[0062] The second pressure strip 2 extends along the second direction joint 102 and covers the joint, so that its width direction spans the second direction joint 102 to connect the walls 10 on both sides. The second pressure strip 2 is fixed to the wall 10 by the second fixing component 21. Specifically, the installation method of the second pressure strip 2 is similar to that of the first pressure strip 1. The second pressure strip 2 is laid along the extension direction of the second direction joint 102, so that its width direction spans the walls 10 on both sides of the joint. The second pressure strip 2 is evenly fixed to the surface of the wall 10 by the second fixing component 21. When installing the second pressure strip 2, attention should be paid to the overlapping relationship between the second pressure strip 2 and the already installed first pressure strip 1 at the intersection. The second pressure strip 2 can be overlapped on the first pressure strip 1, or the first pressure strip 1 can be overlapped on the second pressure strip 2, to ensure that the two are tightly fitted at the intersection.

[0063] The first pressure strip 1 and the second pressure strip 2 are connected to each other at their intersection via the first connecting part 4 and the second connecting part 5, such that at least one end of the first pressure strip 1 along its own extension direction is connected to two adjacent second pressure strips 2, and / or at least one end of the second pressure strip 2 along its own extension direction is connected to two adjacent first pressure strips 1, thereby forming a grid-like reinforcing structure. Specifically, after fixing the first pressure strip 1 and the second pressure strip 2, the first connecting part 4 and the second connecting part 5 at each intersection node are connected accordingly, locking the overlapping two-way pressure strips together. When an overlapping limiting structure is used, the overlapping surface at the end of the first pressure strip 1 is aligned with the overlapping surface at the end of the second pressure strip 2 and pressed tightly; when a bolt connection structure is used, the bolts are passed through the connecting holes on the first pressure strip 1 and the second pressure strip 2 and tightened; when both are used in combination, the overlapping positioning is completed first, and then the bolts are tightened. After all the intersecting nodes are connected one by one, the first pressure strip 1 and the second pressure strip 2 form a grid-like reinforcing structure on the surface of the wall 10 that spans all the first direction joints 101 and the second direction joints 102, connecting each wall panel into an integral load-bearing system.

[0064] This method features clear and defined construction steps, with each stage of construction being independent and segmented. The installation of the first pressure strip 1 can be completed independently, forming a repair strip along the first direction, allowing it to perform preliminary repair functions without waiting for the second pressure strip 2. Subsequent installation of the second pressure strip 2 and joint connections can be superimposed on the existing first pressure strip 1 without removing already installed components, achieving a phased and progressive repair process. Throughout the entire construction process, the installation and positioning of both the first and second pressure strips 1 and 2 are based on existing joints, eliminating the need for on-site measurement and layout. This method offers high construction accuracy, ease of operation, and suitability for rapid repair work on existing building walls.

[0065] The present invention also provides a method for repairing building walls, using the above-described building wall repair system for surface reinforcement structures, comprising the following steps: The first pressure strip 1 is extended along the first direction joint 101 and covers the joint, so that its width direction spans the first direction joint 101 to connect the walls 10 on both sides. The first pressure strip 1 is fixed to the wall 10 by the first fixing component 11. Specifically, after cleaning the surface of the wall 10, the first pressure strip 1 is laid along the extension direction of the first direction joint 101. The length of the first pressure strip 1 covers the entire length of the joint or is connected in series with the adjacent first pressure strip. Its width direction spans both sides of the joint, ensuring that the two long edges of the pressure strip are located on the walls 10 on both sides of the joint. The first fixing component 11 is used to fix the pressure strip by applying force at intervals along the length direction of the pressure strip, so that the first pressure strip 1 is evenly attached to the wall surface, initially suppressing the relative misalignment of the walls on both sides of the first direction joint.

[0066] The second pressure strip 2 extends along the second direction joint 102 and covers the joint, so that its width direction spans the second direction joint 102 to connect the walls 10 on both sides. The second pressure strip 2 is fixed to the wall 10 by the second fixing component 21. Specifically, the installation method of the second pressure strip 2 is similar to that of the first pressure strip 1. It is laid along the second direction joint 102 and spans the walls 10 on both sides of the joint in the width direction, and is evenly fixed by the second fixing component 21. During this process, attention should be paid to the overlapping relationship between the second pressure strip 2 and the already installed first pressure strip 1 at the intersection node. Usually, the pressure strip installed later overlaps the pressure strip installed earlier, so that the two fit tightly at the intersection, preparing for subsequent node connection and cavity enclosure.

[0067] The first pressure strip 1 and the second pressure strip 2 are connected to each other at their intersections via the first connecting part 4 and the second connecting part 5, so that at least two first pressure strips 1 and at least two second pressure strips 2 form at least one closed cavity on the surface of the wall 10. Specifically, the first connecting part 4 and the second connecting part 5 at each intersection node are connected one by one, using overlapping and limiting, bolt fastening, or a combination of both, to lock and interconnect the overlapping two-way pressure strips. After all nodes are connected, two adjacent first pressure strips 1 and two adjacent second pressure strips 2 form a closed quadrilateral cavity on the surface of the wall 10. Multiple cavities are continuously arranged along the wall surface, forming a grid-like skeleton system. This closed cavity provides precise accommodating space and peripheral support boundaries for the installation of the pressure plate 8.

[0068] The pressure plate 8 is used to cover the enclosed cavity, and the pressure plate 8 is fixedly connected to the first pressure strip 1 and / or the second pressure strip 2 and / or the wall 10. Specifically, a corresponding pressure plate 8 is selected according to the size of the enclosed cavity, and the pressure plate 8 is placed on the cavity, with its periphery overlapping the edges of the first pressure strip 1 and the second pressure strip 2 that form the cavity. The pressure plate 8 is fixed to the first pressure strip 1 and the second pressure strip 2 with bolts, or directly anchored to the wall 10, or grout is injected into the gap between the pressure plate 8 and the wall 10, or a double fixation is achieved using both bolts and grout. After the pressure plates for all cavities are installed, the first pressure strip 1, the second pressure strip 2, and multiple pressure plates 8 together form a continuous planar reinforcement structure covering the wall surface.

[0069] This method involves a phased, progressive construction process. After the installation and node connection of the first and second pressure strips 1 and 2, a bidirectional rigid mesh-like reinforcing framework is formed, providing initial overall reinforcement. The subsequent installation of the pressure plate 8 relies entirely on the existing mesh structure. The closed cavity provides precise positioning and stable peripheral support for the pressure plate 8, eliminating the need for additional measurements, layout, or drilling on the wall. This results in high construction efficiency and controllable quality. Furthermore, the installation of the pressure plate 8 does not require the removal or disturbance of the already installed first and second pressure strips 1 and 2. The layered and nested construction of components at each level achieves a complete progressive repair path from "strip" to "mesh" to "surface." Components are fully reusable, allowing for flexible, phased incremental construction and significantly reducing the overall life-cycle repair cost of building walls.

[0070] The above description is merely an embodiment and does not constitute any limitation on the present invention. Any person skilled in the art can make many possible variations, modifications, or alterations to the technical solutions of the present invention without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A building wall repair system, characterized in that, For repairing building walls having a first directional joint (101) and a second directional joint (102), wherein the first directional joint (101) and the second directional joint (102) intersect, and at least one of them has not less than two joints, including: The first pressure strip (1) extends along the first direction joint (101) and covers the joint. Its width direction spans the first direction joint (101) to connect the walls (10) on both sides. The first pressure strip (1) is fixed to the wall (10) by the first fixing component (11) and has a first connecting part (4). The second pressure strip (2) extends along the second direction joint (102) and covers the joint. Its width direction spans the second direction joint (102) to connect the walls (10) on both sides. The second pressure strip (2) is fixed to the wall (10) by the second fixing component (21). It is provided with a second connecting part (5). The first connecting part (4) and the second connecting part (5) can be connected to each other at the intersection of the first pressure strip (1) and the second pressure strip (2). There exists a first pressure strip (1) whose two ends along its own extension direction intersect with two adjacent second pressure strips (2) respectively, and are connected to the second connection part (5) through the first connection part (4), and / or there exists a second pressure strip (2) whose two ends along its own extension direction intersect with two adjacent first pressure strips (1) respectively, and are connected to the second connection part (5) through the first connection part (4), so that the first pressure strip (1) and the second pressure strip (2) form a grid-like reinforcing structure on the surface of the wall (10).

2. The building wall repair system according to claim 1, characterized in that, The first fixing component (11) includes a bolt (3) that passes through the first pressure strip (1) and is anchored in the wall (10) on both sides of the first directional joint (101); And / or, the second fixing component (21) includes a bolt (3) that passes through the second pressure strip (2) and is anchored in the wall (10) on both sides of the second directional joint (102).

3. The building wall repair system according to claim 1 or 2, characterized in that, Grouting material is filled between the first pressure strip (1) and the wall (10) and / or between the second pressure strip (2) and the wall (10). After the grouting material is cured, it will bond the pressure strip and the wall (10) into a whole.

4. The building wall repair system according to claim 3, characterized in that, The first pressure strip (1) has a first rubber pressure strip (6) extending along its edge on the side facing the wall (10), and / or the second pressure strip (2) has a second rubber pressure strip (7) extending along its edge on the side facing the wall (10), the first rubber pressure strip (6) and / or the second rubber pressure strip (7) are pressed between the pressure strip and the wall (10) to form a sealed space between the pressure strip and the wall (10) for accommodating the grout.

5. The building wall repair system according to claim 1, characterized in that, The first connecting part (4) and the second connecting part (5) are overlapping and limiting structures that cooperate with each other, and / or the first connecting part (4) and the second connecting part (5) include bolted connection structures that cooperate with each other.

6. The building wall repair system according to claim 1, characterized in that, The first pressure strip (1) is a series of multiple strips connected in series along the same first direction joint (101), or the second pressure strip (2) is a series of multiple strips connected in series along the same second direction joint (102); when the wall (10) is a planar structure, adjacent pressure strips are connected to each other through a connecting structure; when the wall (10) is a ring structure, the first direction joint (101) or the second direction joint (102) is a ring joint, and the multiple first pressure strips (1) or second pressure strips (2) connected in series along the same ring joint abut each other end to end.

7. The building wall repair system according to any one of claims 1-6, characterized in that, The number of the first pressure strip (1) is at least two, the number of the second pressure strip (2) is at least two, and the adjacent first pressure strip (1) and second pressure strip (2) form at least one closed cavity on the surface of the wall (10); It also includes a pressure plate (8) that covers the closed cavity and is fixedly connected to the first pressure strip (1) and / or the second pressure strip (2) and / or the wall (10) to form a surface-reinforced structure.

8. The building wall repair system according to claim 7, characterized in that, The pressure plate (8) is connected to the wall (10) by bolts (3) and / or grout.

9. A method for repairing building walls, characterized in that, Using the building wall repair system as described in any one of claims 1-6 includes the following steps: The first pressure strip (1) is extended along the first direction joint (101) and covers the joint, so that its width direction spans the first direction joint (101) to connect the walls (10) on both sides, and the first pressure strip (1) is fixed to the wall (10) by the first fixing component (11). The second pressure strip (2) is extended along the second direction joint (102) and covers the joint, so that its width direction spans the second direction joint (102) to connect the walls (10) on both sides, and the second pressure strip (2) is fixed to the wall (10) by the second fixing component (21). The first pressure strip (1) and the second pressure strip (2) are connected to each other at their intersection through the first connecting part (4) and the second connecting part (5), so that at least one first pressure strip (1) is connected to two adjacent second pressure strips (2) at both ends along its own extension direction, and / or at least one second pressure strip (2) is connected to two adjacent first pressure strips (1) at both ends along its own extension direction, thereby forming a grid-like reinforcing structure.

10. A method for repairing building walls, characterized in that, Using the building wall repair system as described in claim 7 or 8 includes the following steps: The first pressure strip (1) is extended along the first direction joint (101) and covers the joint, so that its width direction spans the first direction joint (101) to connect the walls (10) on both sides, and the first pressure strip (1) is fixed to the wall (10) by the first fixing component (11). The second pressure strip (2) is extended along the second direction joint (102) and covers the joint, so that its width direction spans the second direction joint (102) to connect the walls (10) on both sides, and the second pressure strip (2) is fixed to the wall (10) by the second fixing component (21). The first pressure strip (1) and the second pressure strip (2) are connected to each other at the intersection through the first connecting part (4) and the second connecting part (5), so that at least two first pressure strips (1) and at least two second pressure strips (2) form at least one closed cavity on the surface of the wall (10); The pressure plate (8) is used to cover the closed cavity, and the pressure plate (8) is fixedly connected to the first pressure strip (1) and / or the second pressure strip (2) and / or the wall (10).

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