A translucent buckling-restrained brace for structural seismic reinforcement and its construction method

Abstract

The present invention discloses a translucent buckling-resistance brace for seismic reinforcement of a structure and a construction method thereof, comprising an external prefabricated beam-column frame, an oblique translucent combined buckling-resistance brace, a prefabricated beam including a reinforcement beam and a concrete segment at the bottom of the oblique brace, which are directly assembled on site and connected to the original structure; the oblique translucent combined buckling-resistance brace comprises a middle translucent segment, an end concrete segment, sleeves at both ends, through-core prestressed tendons and pads at both ends, which does not affect the lighting performance of the original structure, meets the compression requirements through the rigid oblique brace, and achieves elastic tensile resistance through the through-core prestressed tendons, and each component is installed from bottom to top. The present invention, through the external prefabricated frame and the oblique translucent combined buckling-resistance brace, achieves the effect of strengthening the seismic performance of the structure while ensuring that the lighting performance of the original structure is not affected, and has strong post-earthquake repairability.

Description

Technical Field

[0001] The present invention relates to an anti-buckling brace technology, belonging to the technical field of civil engineering. Background Art

[0002] Seismic resistance is the biggest challenge currently facing masonry structures. Traditional structures are heavy, with low tensile, bending, and shear resistance, resulting in poor seismic performance. Compared to other structural forms, they experience greater damage rates and severity during earthquakes. Older masonry structures that lack standard seismic resistance measures are particularly susceptible to severe damage or even collapse during earthquakes. Structural reinforcement requires not only sufficient shear resistance and energy dissipation capacity, but also maximum protection against any loss of functionality.

[0003] Existing traditional structural reinforcement technologies in China include reinforced concrete surface reinforcement, reinforced mesh cement mortar surface reinforcement, external steel bonding, bonded fiber composite reinforcement, and external prestressed bracing. These methods offer limited reinforcement effectiveness, are costly, and can significantly impact the original structure's functionality. Reinforced concrete external bracing, a technique developed and applied in Japan after the 1995 Kobe Earthquake, provides sufficient lateral stiffness and dissipates energy during earthquakes, ensuring the safety of the original structure and improving post-earthquake repairs. However, these methods often compromise the original structure's lighting and aesthetics due to the large diagonal bracing. In these circumstances, effective solutions are needed not only to mitigate the impact on the original structure's functionality but also to control costs to accommodate the large number of buildings requiring reinforcement and retrofitting. Therefore, there is an urgent need to develop new technologies for reinforcing and retrofitting traditional structures that offer high lateral stiffness, light transmission, high ductility, ease of construction, and low cost to meet the increasingly pressing demand for structural seismic reinforcement. Summary of the Invention

[0004] Purpose of the invention: In order to solve the problems of traditional masonry structure reinforcement technology that seriously affects the lighting of the original structure, involves frequent wet operations on site, has a long construction period, and is difficult to repair after an earthquake, the present invention provides a translucent buckling-restrained brace for structural seismic reinforcement that has high lateral stiffness, light transmittance, high ductility, convenient construction, and low cost, and a construction method thereof, so as to meet the increasingly urgent demand for structural seismic reinforcement.

[0005] The technical solution adopted by the present invention is: a translucent anti-buckling brace for structural seismic reinforcement, which is a structure generally used for seismic reinforcement of masonry structures in 6-8 degree zones, including an original structural wall, an oblique translucent combined anti-buckling brace, an external additional reinforcement beam, an external additional reinforcement column and a post-cast area; the original structural wall is divided into a plurality of wall reinforcement units containing a window, each wall reinforcement unit is respectively provided with a horizontal external additional reinforcement beam and a vertical external additional reinforcement column at the floor height and between the windows; the oblique translucent combined anti-buckling brace is arranged inside an assembled frame composed of the external additional reinforcement beam and the external additional reinforcement column, and the connection between the oblique translucent combined anti-buckling brace and the original structural wall is a post-cast area; the oblique translucent combined anti-buckling brace and the external additional reinforcement beam and the external additional reinforcement column at the upper and lower floors are an integrated structure, together forming an external seismic reinforcement substructure;

[0006] The oblique translucent combined anti-buckling support includes concrete segments at both ends, a translucent segment in the middle, beam top or column side pads, sleeves, through-core prestressed tensile reinforcement and beam bottom pads; the concrete segments are cast together with the post-cast beam-column nodes to form a post-cast area, sleeves are provided at both ends of the translucent segment, the through-core prestressed tensile reinforcement runs through the entire oblique translucent combined anti-buckling support, the tensioning end of the through-core prestressed tensile reinforcement is anchored on the beam top or column side pad, and the fixed end is anchored on the beam bottom pad, the tensioning end anchor adopts a clip-type anchor, and the fixed end anchor adopts an extrusion-type anchor.

[0007] The oblique translucent combined anti-buckling support has a central translucent segment, which can provide sufficient compressive resistance while ensuring that the original structure's lighting is not affected during reinforcement. The tensile resistance requirement is borne by the through-core prestressed tendons, and a certain self-centering ability is provided.

[0008] Preferably, when the wall reinforcement unit is installed on the bottom layer of the original structural wall, the wall reinforcement unit includes an additional fixing beam outside the bottom layer and a bottom layer oblique translucent combined anti-buckling support. The bottom layer oblique translucent combined anti-buckling support is provided with a bottom layer through-hole prestressed anti-tension reinforcement, and the lower part of the bottom layer through-hole prestressed anti-tension reinforcement is arranged in the additional fixing beam outside the bottom layer through an anchoring hook.

[0009] Preferably, a gap should be left between the translucent segment in the middle of the oblique translucent combined anti-buckling support and the through-core prestressed tensile reinforcement and the sleeves at both ends, without bonding, to ensure that the combined support can exist stably in its position and that there is enough room for movement to prevent the parts from being squeezed and damaged by each other.

[0010] Preferably, the external seismic reinforcement substructure is fixed to the original structural wall by through-wall reinforcement arranged in a plum blossom shape, which can penetrate the wall during anchoring, thereby ensuring that a steel mesh is formed between the stress-bearing reinforcement of the reinforcement structure and the floor slab or reinforced concrete beam and the tie reinforcement of the original structural wall, thereby forming a combined structure.

[0011] Preferably, the beam top or column side pads and beam bottom pads are made of prefabricated concrete structure or steel structure, and steel pads and spiral steel bars should be installed between the concrete pads and the anchors.

[0012] Preferably, the original structural wall material is sintered ordinary clay bricks, sintered porous clay bricks, small concrete hollow blocks or stones, and is built with mortar.

[0013] The construction method of the translucent buckling restrained brace for seismic reinforcement of a structure comprises the following steps:

[0014] Step 1: Drill holes where through-wall reinforcement bars are to be installed, install the external reinforcement beams and columns of the external seismic reinforcement substructure, connect the external seismic reinforcement substructure to the original structural wall through through-wall reinforcement bars, position pads at the top of the beam, the sides of the columns, and the bottom of the beam, locate and lay out the installation positions of the through-core prestressed reinforcement bars on the original structural wall, and determine the perforation positions.

[0015] Step 2: Drill an inclined hole at the location where the through-core prestressed tensile reinforcement is to be passed. The direction of the inclined hole should be consistent with the direction in which the through-core prestressed tensile reinforcement is set, and the hole diameter should ensure that it can pass through smoothly;

[0016] Step 3: Drill holes at the installation positions of the external additional fixed beams and external additional fixed columns corresponding to the beam top or column side pads and beam bottom pads. The size of the holes should be able to ensure the installation of the beam top or column side pads and beam bottom pads;

[0017] Step 4: Perform base treatment on the surface of the concrete segment of the oblique translucent composite buckling restraint support, add a high-strength mortar mortar layer or mechanical connection measures to ensure that it fits tightly with the sleeve; install the beam top or column side pads, and fill the gap between the opening and the beam top or column side pads with grouting material or high-strength mortar;

[0018] Step 5: Carry out base treatment on the bottom surface of the beam where the beam bottom pad is installed, and use high-strength mortar to make sure it fits tightly with the beam bottom pad; install the beam bottom pad, and fill the gap between the opening and the beam bottom pad with grouting material or high-strength mortar;

[0019] Step 6: Install the translucent segments and sleeves of the oblique translucent combined buckling restraint brace from bottom to top, and install the through-core prestressed tensile reinforcement obliquely, so that it passes through the beam bottom pad, the lower layer external fixed beam, the oblique translucent combined buckling restraint brace, the upper layer external fixed beam or external fixed column, and the beam top or column side pad from bottom to top. Then, install the tensioning end anchor at the upper end of the through-core prestressed tensile reinforcement, and install the fixed end anchor at the lower end of the through-core prestressed tensile reinforcement.

[0020] Step 7: Prestress according to design requirements; after prestressing is completed, cut off the exposed steel strands on the beam top or column side pads so that the length of the steel strands outside the anchor does not exceed 30mm;

[0021] Step 8: Carry out surface sealing treatment on beam top or column side pads and beam bottom pads, anchors and exposed steel strands to ensure their durability and fire protection requirements, seal the holes in the floor slabs, and finally restore the wall surface.

[0022] The present invention utilizes an assembled external concrete beam-column frame and an oblique translucent combined anti-buckling support to improve the shear resistance of the existing structural wall surface as a whole, and ensures that the original structure's lighting is not affected by the translucent segment in the middle of the oblique support. Through-wall reinforcement is used to connect the translucent anti-buckling support for seismic reinforcement of the structure with the original structure to achieve the purpose of overall seismic reinforcement. In frequent earthquakes, the translucent anti-buckling support for seismic reinforcement of the structure improves the lateral stiffness of the original structure, which is in the elastic stage; in rare earthquakes, the oblique translucent combined anti-buckling support is preferentially used to dissipate energy, and after the earthquake, it is only necessary to replace the damaged segment or tensile prestressed tendons as appropriate. The present invention improves the seismic performance of the traditional structure as a whole while ensuring that the performance of the original structure is not affected to the greatest extent.

[0023] The translucent buckling-resistance braces for structural seismic reinforcement of the present invention can be respectively arranged in two directions to cope with earthquake waves transmitted from different directions; the translucent buckling-resistance braces can be used not only to reinforce the overall structure, but also to centrally reinforce any layer of the wall.

[0024] Beneficial effects:

[0025] (1) The translucent buckling-resistance brace proposed in the present invention can improve the overall seismic bearing capacity of the structure and reduce the impact on the lighting performance of the original structure.

[0026] (2) In the present invention, the original structure is protected by the anti-buckling support itself to dissipate energy, and the damaged parts can be easily replaced after the earthquake, the repairability is strong, the construction is simple, and the cost is low.

[0027] (3) The oblique translucent composite anti-buckling support in the present invention consists of five parts, including prestressed steel bars, force-transmitting pads at both ends, anchors, a middle translucent section and sleeves at both ends. It can ensure that the oblique support is in an elastic working state under frequent earthquakes, and is the first to be damaged and consume energy under rare earthquakes, thereby protecting the substructure as a whole and further protecting the original structure from large cracks and damage during earthquakes.

[0028] (4) The translucent buckling-resistance supports for seismic reinforcement of the structure proposed in the present invention are all located outside the structure and are connected to the original structure through through-wall reinforcements. The window parts correspond to the diagonally braced glass segments, so that the use conditions of the original structure, including the lighting function, are not affected or are less affected, and the deadweight of the structure is not increased, and the usable area of ​​the building is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1A schematic structural diagram of a translucent buckling-restrained brace for seismic reinforcement of a structure according to the present invention;

[0030] Figure 2 A schematic structural diagram of a wall reinforcement unit of the present invention;

[0031] Figure 3 Schematic diagram of the oblique translucent combined anti-buckling support structure of the present invention;

[0032] Figure 4 Schematic diagram of the bottom layer oblique translucent combined anti-buckling support structure of the present invention;

[0033] Explanation of the accompanying numbers: 1-original structural wall, 2-oblique translucent combined anti-buckling support, 3-external additional reinforcement beam, 4-external additional reinforcement column, 5-wall reinforcement unit, 6-post-cast area, 7-bottom-floor external additional reinforcement beam, 8-bottom-floor oblique translucent combined anti-buckling support, 61-concrete segment, 62-post-cast beam-column node, 21-beam top or column side pad, 22-sleeve, 23-translucent segment, 24-through prestressed tensile reinforcement, 25-beam bottom pad, 91-bottom-floor through prestressed tensile reinforcement, 92-anchor hook. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to the accompanying drawings and specific implementation methods.

[0035] like Figures 1-4 As shown, a translucent buckling restraint brace for structural seismic reinforcement comprises an original structural wall 1, an oblique translucent combined buckling restraint brace 2, an externally attached reinforcement beam 3, an externally attached reinforcement column 4 and a post-cast area 6; the original structural wall 1 is divided into a plurality of wall reinforcement units 5 each containing a window, and each wall reinforcement unit 5 is provided with a horizontally attached externally attached reinforcement beam 3 and a vertically attached externally attached reinforcement column 4 at the floor height and between the windows, respectively; the oblique translucent combined buckling restraint brace 2 is arranged inside an assembled frame composed of the externally attached reinforcement beam 3 and the externally attached reinforcement column 4, and the connection between the oblique translucent combined buckling restraint brace 2 and the original structural wall 1 is a post-cast area 6; the oblique translucent combined buckling restraint brace 2 and the externally attached reinforcement beam 3 and the externally attached reinforcement column 4 on the upper and lower floors are an integrated structure, together forming an externally attached seismic reinforcement substructure;

[0036] The oblique translucent combined anti-buckling support 2 includes concrete segments 61 at both ends, a translucent segment 23 in the middle, a beam top or column side pad 21, a sleeve 22, a through-core prestressed tensile reinforcement 24 and a beam bottom pad 25; the concrete segment 61 and the post-cast beam-column node 62 are cast together to form a post-cast area 6, and sleeves 22 are provided at both ends of the translucent segment 23. The through-core prestressed tensile reinforcement 24 runs through the entire oblique translucent combined anti-buckling support 2, and the tensioning end of the through-core prestressed tensile reinforcement 24 is anchored on the beam top or column side pad 21, and the fixed end is anchored on the beam bottom pad 25. The tensioning end anchor adopts a clip-type anchor, and the fixed end anchor adopts an extrusion-type anchor.

[0037] The oblique translucent combined anti-buckling support has a central translucent segment, which can provide sufficient compressive resistance while ensuring that the original structure's lighting is not affected during reinforcement. The tensile resistance requirement is borne by the through-core prestressed tendons, and a certain self-centering ability is provided.

[0038] When the wall reinforcement unit 5 is installed on the bottom layer of the original structural wall 1, the wall reinforcement unit 5 includes a bottom layer external additional reinforcement beam 7 and a bottom layer oblique translucent combined anti-buckling support 8. The bottom layer oblique translucent combined anti-buckling support 8 is provided with a bottom layer through-hole prestressed anti-tension reinforcement 91. The lower part of the bottom layer through-hole prestressed anti-tension reinforcement 91 is arranged in the bottom layer external additional reinforcement beam 7 through an anchoring hook 92.

[0039] There should be a gap between the translucent segment 23 in the middle of the oblique translucent combined anti-buckling support 2 and the through-core prestressed tensile reinforcement 24 and the sleeves 22 at both ends, without bonding, to ensure that the combined support can exist stably in its position and have enough room for movement to prevent the parts from being squeezed and damaged by each other.

[0040] The external seismic reinforcement substructure is fixed to the original structural wall 1 through plum blossom-shaped wall reinforcement, which can penetrate the wall during anchoring, ensuring that a steel mesh is formed between the reinforcement structure's stress reinforcement and the floor slab or reinforced concrete beam and the original structural wall 1's tie bars, thereby forming a combined structure.

[0041] The beam top or column side pads 21 and the beam bottom pads 25 are made of prefabricated concrete structure or steel structure, and steel pads and spiral steel bars should be installed between the concrete pads and the anchors.

[0042] The original structural wall 1 is made of sintered common clay bricks, sintered porous clay bricks, small hollow concrete blocks or stones, and is built with mortar.

[0043] The construction method of the translucent buckling restrained brace for seismic reinforcement of a structure comprises the following steps:

[0044] Step 1: Drill holes where through-wall reinforcement bars are to be installed, install the external reinforcement beams 3 and external reinforcement columns 4 of the external seismic reinforcement substructure, connect the external seismic reinforcement substructure to the original structural wall 1 through through-wall reinforcement bars, position pads at the top of the beam, the sides of the columns, and the bottom of the beam, locate and lay out the installation positions of the through-core prestressed reinforcement bars 24 on the original structural wall 1, and determine the perforation positions.

[0045] Step 2: Drill an oblique hole at the location where the through-core prestressed tensile reinforcement 24 is to be passed. The direction of the oblique hole should be consistent with the direction in which the through-core prestressed tensile reinforcement 24 is set, and the hole size should ensure that it can pass through smoothly.

[0046] Step 3: Drill holes in the external additional fixed beam 3 and the external additional fixed column 4 corresponding to the installation positions of the beam top or column side pads 21 and the beam bottom pads 25. The size of the holes should be sufficient to ensure the installation of the beam top or column side pads 21 and the beam bottom pads 25.

[0047] Step 4: Perform a base treatment on the surface of the concrete segment 61 of the oblique translucent composite buckling restraint brace 2, add a high-strength mortar mortar layer or mechanical connection measures to ensure that it can fit tightly with the sleeve 22; install the beam top or column side pad 21, and fill the gap between the opening and the beam top or column side pad 21 with grouting material or high-strength mortar;

[0048] Step 5: Perform base treatment on the bottom surface of the beam where the beam bottom pad 25 is installed, and use a high-strength mortar mortar layer to ensure that it fits tightly with the beam bottom pad 25; install the beam bottom pad 25, and fill the gap between the hole and the beam bottom pad 25 with grouting material or high-strength mortar;

[0049] Step 6: Install the translucent segment 23 and sleeve 22 of the oblique translucent combined buckling restraint brace 2 from bottom to top, and obliquely install the through-core prestressed tensile reinforcement 24, so that it passes through the beam bottom pad 25, the lower layer external additional fixed beam 3, the oblique translucent combined buckling restraint brace 2, the upper layer external additional fixed beam 3 or the external additional fixed column 4, and the beam top or column side pad 21 from bottom to top, and then install the tensioning end anchor at the upper end of the through-core prestressed tensile reinforcement 24, and install the fixed end anchor at the lower end of the through-core prestressed tensile reinforcement 24;

[0050] Step 7: Prestressing according to design requirements; after prestressing is completed, cut off the exposed steel strands of the beam top or column side pad 21 so that the length of the steel strand outside the anchor does not exceed 30mm;

[0051] Step 8: Perform surface sealing treatment on the beam top or column side pads 21 and beam bottom pads 25, anchors and exposed steel strands to ensure their durability and fire protection requirements, seal the floor holes, and finally restore the wall surface.

[0052] The present invention achieves the purpose of greatly improving the lateral stiffness and integrity of the masonry structure through a large frame assembled from externally attached solid beams and externally attached solid columns and the oblique translucent combined anti-buckling supports therein, while ensuring to the greatest extent that the performance of the original structure, including lighting, is not affected. It has the function of elastically working under frequent earthquakes and relying on the external anti-buckling support structure to dissipate energy under rare earthquakes. Moreover, the entire structure is prefabricated and assembled, with convenient and quick construction, little impact on the environment, and strong post-earthquake repairability, and damaged parts can be replaced. Traditional reinforcement methods involve a lot of wet work on site, a long construction period, and a great impact on the performance of the original structure, especially seriously damaging the original lighting conditions. For this reason, the present invention designs an oblique translucent combined anti-buckling support. When there is no earthquake disaster, the translucent segment hardly affects the lighting, and it can also provide sufficient tensile and compressive properties at the epicenter to cope with reciprocating earthquake effects.

[0053] The translucent buckling-restrained brace used for structural seismic reinforcement can be considered as a whole consisting of a wall containing a window and its corresponding external frame, that is, several wall reinforcement units. When an earthquake acts on this structure and the original structure as a whole, due to its high rigidity, its top can be considered to bear a reciprocating load. Therefore, the two combined diagonal braces bear the tensile and compressive loads respectively, alternating continuously. Because translucent materials such as glass generally have a much greater compressive strength than concrete, but a lower tensile strength and significant brittleness, glass sleeves are used to fix the translucent segments in a fixed position to resist compression, while through-core prestressed tendons are used to meet the tensile requirements.

[0054] The above embodiment merely represents one embodiment of the present invention, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A translucent buckling-restrained brace for structural seismic reinforcement, characterized by: The invention comprises an original structural wall (1), an oblique translucent combined anti-buckling support (2), an external additional fixed beam (3), an external additional fixed column (4) and a post-casting area (6); the original structural wall (1) is divided into a plurality of wall reinforcement units (5) each containing a window, and each wall reinforcement unit (5) is provided with a horizontal external additional fixed beam (3) and a vertical external additional fixed column (4) at the floor height and between the windows, the oblique translucent combined anti-buckling support (2) is arranged inside the assembled frame composed of the external additional fixed beam (3) and the external additional fixed column (4), and the connection between the oblique translucent combined anti-buckling support (2) and the original structural wall (1) is the post-casting area (6); the oblique translucent combined anti-buckling support (2) and the external additional fixed beam (3) and the external additional fixed column (4) at the upper and lower floors are an integrated structure, and together constitute an external anti-seismic reinforcement substructure; The oblique translucent combined anti-buckling support (2) comprises concrete segments (61) at both ends, a translucent segment (23) in the middle, a beam top or column side pad (21), a sleeve (22), a through-core prestressed tensile reinforcement (24) and a beam bottom pad (25); the concrete segments (61) and the post-cast beam-column joint (62) are cast together to form a post-cast area (6); sleeves (22) are provided at both ends of the translucent segment (23); the through-core prestressed tensile reinforcement (24) runs through the entire oblique translucent combined anti-buckling support (2); the tensioning end of the through-core prestressed tensile reinforcement (24) is anchored on the beam top or column side pad (21), and the fixed end is anchored on the beam bottom pad (25); the tensioning end anchor adopts a clip-type anchor, and the fixed end anchor adopts an extrusion-type anchor.

2. The translucent buckling-restrained brace for structural seismic reinforcement according to claim 1, characterized in that: When the wall reinforcement unit (5) is installed on the bottom layer of the original structural wall (1), the wall reinforcement unit (5) comprises a bottom layer external additional reinforcement beam (7) and a bottom layer oblique semi-transparent combined anti-buckling support (8), a bottom layer through-hole prestressed tensile reinforcement (91) is provided in the bottom layer oblique semi-transparent combined anti-buckling support (8), and the lower portion of the bottom layer through-hole prestressed tensile reinforcement (91) is arranged in the bottom layer external additional reinforcement beam (7) via an anchoring hook (92).

3. The translucent buckling-restrained brace for structural seismic reinforcement according to claim 1, characterized in that: A gap should be left between the translucent segment (23) in the middle of the oblique translucent combined buckling-resisting brace (2) and the through-core prestressed tensile reinforcement (24) and the sleeves (22) at both ends thereof.

4. The translucent buckling-restrained brace for structural seismic reinforcement according to claim 1, characterized in that: The externally attached seismic reinforcement substructure is fixed to the original structural wall (1) by means of through-wall reinforcement bars arranged in a plum blossom shape, which penetrate the wall during anchoring, thereby ensuring that a steel mesh is formed between the externally attached seismic reinforcement substructure's stress reinforcement bars and the floor slab or reinforced concrete beams and the original structural wall (1)'s tie bars, thereby forming a combined structure.

5. The translucent buckling-restrained brace for structural seismic reinforcement according to claim 1, characterized in that: The beam top or column side pad (21) and the beam bottom pad (25) are made of prefabricated concrete structure or steel structure, and a steel pad and spiral steel bar should be installed between the concrete pad and the anchor.

6. The translucent buckling-restrained brace for structural seismic reinforcement according to claim 1, characterized in that: The original structural wall (1) is made of sintered common clay bricks, sintered porous clay bricks, small hollow concrete blocks or stone, and is built with mortar.

7. A construction method for a translucent buckling-restrained brace for seismic reinforcement of a structure according to claim 1, 2, 3, 4, 5 or 6, characterized in that: The following steps are involved: Step 1: Drill holes at the locations where through-wall reinforcement bars are to be set, install the external reinforcement beams (3) and external reinforcement columns (4) of the external seismic reinforcement substructure, connect the external seismic reinforcement substructure with the original structural wall (1) through the through-wall reinforcement bars, position pads at the top of the beam, the sides of the columns and the bottom of the beam, position and lay out the installation positions of the through-core prestressed reinforcement bars (24) on the original structural wall (1), and determine the perforation positions at the same time; Step 2: Drill an oblique hole at the position where the through-core prestressed tensile reinforcement (24) is to be passed through. The direction of the oblique hole should be consistent with the setting direction of the through-core prestressed tensile reinforcement (24). The hole size should ensure that it can pass through smoothly. Step 3: Drill holes at the locations of the external additional fixed beam (3) and the external additional fixed column (4) corresponding to the installation positions of the beam top or column side pads (21) and the beam bottom pads (25). The size of the holes should be sufficient to ensure the installation of the beam top or column side pads (21) and the beam bottom pads (25); Step 4: Performing a base treatment on the surface of the concrete segment (61) of the oblique translucent combined buckling restraint support (2), adding a high-strength mortar mortar layer or mechanical connection measures to ensure that it can fit tightly with the sleeve (22); installing the beam top or column side pad (21), and filling the gap between the opening and the beam top or column side pad (21) with grouting material or high-strength mortar; Step 5: Performing a base treatment on the bottom surface of the beam at the installation position of the beam bottom pad (25), using a high-strength mortar mortar layer to ensure that it can fit tightly with the beam bottom pad (25); installing the beam bottom pad (25), and filling the gap between the opening and the beam bottom pad (25) with grouting material or high-strength mortar; Step 6: Install the translucent segment (23) and sleeve (22) of the oblique translucent combined buckling-resistance brace (2) from bottom to top, and obliquely install the through-core prestressed tensile reinforcement (24) so ​​that it passes through the beam bottom pad (25), the lower layer external additional fixed beam (3), the oblique translucent combined buckling-resistance brace (2), the upper layer external additional fixed beam (3) or the external additional fixed column (4), the beam top or column side pad (21) in sequence from bottom to top, and then install the tensioning end anchor at the upper end of the through-core prestressed tensile reinforcement (24), and install the fixed end anchor at the lower end of the through-core prestressed tensile reinforcement (24); Step 7: Prestressing is performed according to the design requirements. After the prestressing is completed, the exposed steel strands are cut off from the beam top or column side pads (21) so that the length of the steel strands outside the anchor does not exceed 30 mm. Step 8: The beam top or column side pad (21) and beam bottom pad (25), anchors and exposed steel strands are surface sealed to ensure durability and fire protection requirements, the floor holes are sealed, and finally the wall surface is restored.

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