A shear reinforcement structure for a concrete structural beam and a method of reinforcing the same

Abstract

The application discloses a kind of concrete structure beam shear reinforcement structure, it is related to concrete structure beam technical field, including floor, the floor bottom is opened in multiple anchoring holes symmetrically, the floor bottom is opened in multiple limiting holes symmetrically;Support beam assembly, the support beam assembly is fixedly connected in floor bottom, the support beam assembly includes structure beam body, the outer surface of structure beam body both sides is all opened in stepped groove.This application, first screw rod is inserted into the position of limiting groove and limiting block, so that the threaded hole of first screw rod can be kept in downward position, and the secondary reinforcing hole is kept in communication state, the second screw rod is inserted into threaded hole by screwing, at this time, the second screw rod can be inserted into the secondary reinforcing hole and the first screw rod is completed splicing, the first screw rod and the second screw rod cooperate in the structure beam body inside and form a complete reinforcing structure net, effectively improve the shear performance of structure beam body.

Description

Technical Field

[0001] This invention relates to the field of concrete structural beam technology, specifically to a shear-strengthening structure for concrete structural beams and its strengthening method. Background Technology

[0002] Concrete structural beams are a common type of load-bearing component used to bear and transfer the loads of houses or buildings. Beams typically span between columns or walls, serving to support and distribute lateral loads.

[0003] In existing technologies, in order to improve the shear resistance of structural beams, shear reinforcement construction is usually carried out on the structural beams. However, the traditional reinforcement method is usually to drill holes at the bottom of the structural beam and then install steel plates. Although this method can provide reinforcement to the overall surface of the structural beam, the drilling location will damage the overall structure of the structural beam, resulting in a poor load-bearing capacity and a less than ideal reinforcement effect.

[0004] Therefore, we propose a shear-strengthening structure and its strengthening method for concrete beams to address the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a shear-strengthening structure and method for concrete structural beams, in order to solve the problem mentioned in the background art that the drilling location will damage the overall structure of the structural beam, resulting in an unsatisfactory load-bearing capacity and reinforcement effect.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a shear-strengthening structure for concrete beams, comprising a floor slab, wherein multiple anchor holes and multiple limiting holes are symmetrically formed at the bottom of the floor slab; and a supporting beam assembly, which is fixedly connected to the bottom of the floor slab. The supporting beam assembly includes a structural beam body, wherein stepped grooves are formed on both outer surfaces of the structural beam body, and multiple buffer grooves are equidistantly formed between the inner surfaces of two stepped grooves. A connecting seat is fixedly connected to the bottom of the buffer groove, and multiple buffer grooves are uniformly fixedly connected to the bottom of the connecting seat. The first damper has a first spring fitted on the outer surface of each of the first dampers, and a buffer block is fixedly connected between the upper surfaces of the first dampers. The outer surface of the structural beam body has multiple main reinforcement holes at equal intervals, and the bottom of the structural beam body has secondary reinforcement holes at equal intervals. The reinforcement assembly consists of two components, symmetrically fixedly connected to the outer surface of the structural beam body, each reinforcement component including a bracket and a fastening plate. The mounting assembly is fixedly connected to the bottom of the structural beam body, including a mounting plate and multiple first screws.

[0007] Preferably, the top of the buffer block is fitted to the top of the buffer groove, and the outer surface of the buffer block is slidably connected to the inner surface of the connecting seat.

[0008] Preferably, the main reinforcing hole and the secondary reinforcing hole are connected, and the diameter of the main reinforcing hole is larger than the diameter of the secondary reinforcing hole.

[0009] Preferably, the top of the bracket is symmetrically fixedly connected with a second damper, and a second spring is sleeved on the outer surface of each of the two second dampers. A baffle is fixedly connected to the upper end face of the second damper, and a rod is fixedly connected to the top of the baffle. The outer surface of the rod is inserted into the inner surface of the limiting hole, and the diameter of the baffle is larger than the diameter of the limiting hole.

[0010] Preferably, the bracket has multiple positioning holes equidistantly arranged on its outer surface, and limit blocks are symmetrically fixedly connected to the inner surface of the positioning holes. The bracket has multiple mounting holes equidistantly arranged on its top, and a first bolt is installed inside the mounting hole, which is matched with the position of the anchoring hole.

[0011] Preferably, the bottom of the bracket is provided with a plurality of first splicing holes at equal intervals, and the outer surface of the fastening plate is provided with a plurality of through holes at equal intervals, the through holes being matched with the positioning holes.

[0012] Preferably, slots are provided on both outer surfaces of the fastening plate, and card blocks are symmetrically fixedly connected to the outer surface of the card plate, with the outer surface of the card blocks engaging with the inner surface of the slots.

[0013] Preferably, the outer surface of the first screw has a threaded hole, and a first nut is symmetrically threaded onto the outer surface of the first screw. The first nut is located on the outer side of the fastening plate, and the first screw mates with the main reinforcement hole. A limit groove is symmetrically formed on the outer surface of the first screw, and the outer surface of the first screw is inserted into the inner surface of the positioning hole. The limit groove mates with the limit block. A plurality of second splicing holes are equidistantly formed on the top of the mounting plate. A second screw is disposed inside the second splicing hole, and a second nut is threaded onto the outer surface of the second screw. The second nut is located on the lower side of the mounting plate, and the outer surface of the second screw is threaded into the inner surface of the threaded hole. The second screw mates with the secondary reinforcement hole.

[0014] Preferably, the mounting plate has a plurality of third splicing holes symmetrically opened on the top, a second bolt is installed inside the third splicing hole, a third nut is threaded on the outer surface of the second bolt, the third nut is located on the lower side of the mounting plate, and the third splicing hole is matched with the first splicing hole.

[0015] A method for strengthening a shear-resistant concrete beam includes the following steps: S1. When reinforcing the floor slab and structural beam body against shear, the bracket is fixed to the floor slab using the first bolt. Through the combination of stepped groove and buffer groove, the contact surface between the structural beam body and the floor slab can be transformed from a line surface to a multi-point contact point. At the same time, with the buffer groove being suspended, the pressure on the floor slab can be buffered and dissolved by the buffer groove, which plays a role in dispersing pressure and improving the bearing capacity of the structural beam body. S2. The first damper and the first spring work together to provide buffering and shock absorption performance at the bottom of the buffer block, so that the pressure on the structural beam body can be transmitted to the buffer block position and absorbed by the first damper and the first spring, thereby improving the overall load-bearing capacity of the structural beam body. S3. By cooperating with the positioning hole and the limiting block, when the first screw is inserted into the main reinforcing hole through the positioning hole for structural reinforcement, the first screw will align the limiting groove with the position of the limiting block and insert it, so that the threaded hole of the first screw can be kept in the downward position and kept in communication with the secondary reinforcing hole. S4. Tighten the second screw and insert it into the threaded hole. At this time, the second screw can be inserted into the secondary reinforcement hole and spliced ​​with the first screw. The first screw and the second screw work together to form a complete reinforcement structure network inside the structural beam body, which effectively improves the shear resistance of the structural beam body.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In use, the first screw is inserted into the limiting block with the limiting groove aligned with it, so that the threaded hole of the first screw is kept in the downward position and in communication with the secondary reinforcement hole. The second screw is then screwed into the threaded hole, and at this time the second screw can be inserted into the secondary reinforcement hole to complete the splicing with the first screw. The first screw and the second screw work together to form a complete reinforcement structure network inside the structural beam body, which effectively improves the shear resistance of the structural beam body. 2. In use, the combination of stepped grooves and buffer grooves can transform the contact surface between the structural beam and the floor slab from a line to a multi-point contact point. At the same time, the suspended design of the buffer grooves can buffer and dissipate the pressure on the floor slab, thereby dispersing the pressure and improving the load-bearing capacity of the structural beam. 3. In use, the first damper and the first spring work together to provide cushioning and shock absorption performance for the bottom of the buffer block, so that the pressure on the structural beam body can be transmitted to the buffer block position and absorbed by the first damper and the first spring, thereby improving the overall load-bearing capacity of the structural beam body. The cushioning and shock absorption performance provided by the second damper and the second spring can play a role in buffering and supporting the installation position of the bracket. Attached Figure Description

[0017] Figure 1 This is a perspective view of a shear-strengthening structure for concrete beams according to the present invention. Figure 2 This is a side view of a shear-strengthening structure for concrete beams according to the present invention; Figure 3 This is a bottom view of a shear-strengthening structure for concrete beams according to the present invention; Figure 4 This is a schematic diagram of a support beam assembly structure for shear strengthening of concrete beams according to the present invention. Figure 5 This is a schematic diagram of a reinforcement component structure for a shear-strengthening structure of a concrete beam according to the present invention; Figure 6 This is a schematic diagram of a card plate structure for shear strengthening of a concrete beam according to the present invention; Figure 7 This is a schematic diagram of the installation component structure of a shear-strengthening structure for concrete beams according to the present invention; Figure 8 This is a schematic diagram of the installation component structure of a shear-strengthening structure for concrete beams according to the present invention.

[0018] In the picture: 1. Floor slab; 2. Support beam assembly; 201. Structural beam body; 202. Step groove; 203. Buffer groove; 204. Main reinforcement hole; 205. Secondary reinforcement hole; 206. Connecting seat; 207. First damper; 208. First spring; 209. Buffer block; 3. Reinforcement assembly; 301. Bracket; 302. Positioning hole; 303. Limiting block; 304. Second damper; 305. Second spring; 306. Baffle; 307. Insert rod; 308. Mounting hole; 30 9. First bolt; 310. Fastening plate; 311. Through hole; 312. Slot; 313. First splicing hole; 4. Mounting assembly; 401. Mounting plate; 402. First screw; 403. Limiting groove; 404. Threaded hole; 405. First nut; 406. Second splicing hole; 407. Second screw; 408. Second nut; 409. Third splicing hole; 410. Second bolt; 411. Third nut; 5. Clamping plate; 6. Clamping block; 7. Anchoring hole; 8. Limiting hole. Detailed Implementation

[0019] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Reference Figures 1-8As shown: A shear-strengthening structure for a concrete beam includes a floor slab 1, with multiple anchor holes 7 and multiple limiting holes 8 symmetrically formed at the bottom of the floor slab 1; a support beam assembly 2, which is fixedly connected to the bottom of the floor slab 1. The support beam assembly 2 includes a structural beam body 201, with stepped grooves 202 formed on both outer surfaces of the structural beam body 201. Multiple buffer grooves 203 are equidistantly formed between the inner surfaces of the two stepped grooves 202. A connecting seat 206 is fixedly connected to the bottom of the buffer groove 203. Multiple first dampers 207 are uniformly fixedly connected to the bottom of the connecting seat 206. The outer surface of the 07 is fitted with a first spring 208, and a buffer block 209 is fixedly connected between the upper end faces of multiple first dampers 207. Multiple main reinforcement holes 204 are equidistantly opened on the outer surface of the structural beam body 201, and secondary reinforcement holes 205 are equidistantly opened at the bottom of the structural beam body 201. Reinforcement component 3, the number of reinforcement components 3 is set to two, and the two reinforcement components 3 are symmetrically fixedly connected to the outer surface of the structural beam body 201. The reinforcement component 3 includes a bracket 301 and a fastening plate 310. Mounting component 4, the mounting component 4 is fixedly connected to the bottom of the structural beam body 201. The mounting component 4 includes a mounting plate 401 and multiple first screws 402.

[0021] like Figure 3 and Figure 4 As shown, the top of the buffer block 209 fits into the top of the buffer groove 203, and the outer surface of the buffer block 209 slides into the inner surface of the connecting seat 206. Through the coordinated arrangement of the stepped groove 202 and the buffer groove 203, the contact surface between the structural beam body 201 and the floor slab 1 can be transformed from a line surface to a multi-point contact point. At the same time, with the buffer groove 203 being suspended, the pressure on the floor slab 1 can be buffered and dissolved by the buffer groove 203, which plays a role in dispersing pressure and improving the bearing capacity of the structural beam body 201. In addition, with the use of the buffer block 209, the first damper 207 and the first spring 208 can provide buffering and shock absorption performance for the bottom of the buffer block 209, so that the pressure on the structural beam body 201 can be transmitted to the position of the buffer block 209 and absorbed by the first damper 207 and the first spring 208, thereby improving the overall bearing capacity of the structural beam body 201.

[0022] like Figure 3 and Figure 4 As shown, the main reinforcement hole 204 and the secondary reinforcement hole 205 are connected. The diameter of the main reinforcement hole 204 is larger than that of the secondary reinforcement hole 205. When the main reinforcement hole 204 and the secondary reinforcement hole 205 are drilled, they are connected to avoid the direction of the reinforcing bars. Then, secondary structural reinforcement of the structural beam body 201 can be carried out from the positions of the main reinforcement hole 204 and the secondary reinforcement hole 205.

[0023] like Figure 5As shown, a second damper 304 is symmetrically fixedly connected to the top of the bracket 301. A second spring 305 is sleeved on the outer surface of each of the two second dampers 304. A baffle 306 is fixedly connected to the upper end face of the second damper 304. A plug rod 307 is fixedly connected to the top of the baffle 306. The outer surface of the plug rod 307 is inserted into the inner surface of the limiting hole 8. The diameter of the baffle 306 is larger than the diameter of the limiting hole 8. When the bracket 301 is installed and fixed to the floor slab 1, the plug rod 307 and the limiting hole 8 are matched to guide and position the bracket 301, so that the bracket 301 is accurately installed in the predetermined position to strengthen the structural beam body 201. After the bracket 301 and the floor slab 1 are fixedly installed, the second damper 304 and the second spring 305 will support the bracket 301 between the floor slab 1 and the bracket 301. The buffering and shock absorption performance provided by the second damper 304 and the second spring 305 can provide buffering support for the installation position of the bracket 301.

[0024] like Figure 5 As shown, the bracket 301 has multiple positioning holes 302 equidistantly arranged on its outer surface. Limiting blocks 303 are symmetrically fixedly connected to the inner surface of the positioning holes 302. The bracket 301 has multiple mounting holes 308 equidistantly arranged on its top. A first bolt 309 is installed inside the mounting hole 308. The first bolt 309 is matched with the anchoring hole 7. Through the matching of the positioning hole 302 and the limiting block 303, when the first screw 402 is inserted into the main reinforcement hole 204 through the positioning hole 302 for structural reinforcement, the first screw 402 aligns the limiting groove 403 with the limiting block 303 and inserts it. This allows the threaded hole 404 of the first screw 402 to remain in a downward position and maintain communication with the secondary reinforcement hole 205, which can play a role in limiting the installation. This allows the second screw 407 to be accurately assembled with the first screw 402 to complete the structural reinforcement.

[0025] like Figure 5 As shown, the bottom of the bracket 301 is provided with a plurality of first splicing holes 313 at equal intervals, and the outer surface of the fastening plate 310 is provided with a plurality of through holes 311 at equal intervals. The through holes 311 are matched with the positioning holes 302. The fastening plate 310 can prevent the first nut 405 from loosening. After the first splicing holes 313 and the second splicing holes 406 are aligned, the bracket 301 and the mounting plate 401 can be spliced ​​and installed.

[0026] like Figure 5 and Figure 6As shown, slots 312 are provided on both outer surfaces of the fastening plate 310. A locking block 6 is symmetrically fixed to the outer surface of the locking plate 5. The outer surface of the locking block 6 is inserted into the inner surface of the slot 312. After the first nut 405 is clamped on the outside of the two fastening plates 310 and installed, the locking plate 5 is inserted into the slot 312 through the locking block 6 to complete the splicing and fixing with the fastening plate 310. The locking block 6 locks the positions of the two fastening plates 310 in place, providing an anti-loosening function for the first nut 405 and improving the stability of the mounting structure of the bracket 301 and the mounting plate 401.

[0027] like Figure 7 and Figure 8 As shown, a threaded hole 404 is formed on the outer surface of the first screw 402. A first nut 405 is symmetrically threaded onto the outer surface of the first screw 402. The first nut 405 is located on the outer side of the fastening plate 310. The first screw 402 mates with the main reinforcing hole 204. A limit groove 403 is symmetrically formed on the outer surface of the first screw 402. The outer surface of the first screw 402 is inserted into the inner surface of the positioning hole 302. The limit groove 403 mates with the limit block 303. A plurality of second splicing holes 406 are equidistantly formed on the top of the mounting plate 401. A second screw 407 is set inside the second splicing hole 406. A second nut 408 is threaded onto the outer surface of the second screw 407. Located on the lower side of mounting plate 401, the outer surface of the second screw 407 is threadedly connected to the inner surface of the threaded hole 404. The second screw 407 is aligned with the secondary reinforcement hole 205. After the first screw 402 is inserted into the main reinforcement hole 204 through the positioning hole 302, the fastening plates 310 on both sides are clamped and fixed by the first nut 405. Then, the second screw 407 is screwed into the threaded hole 404. At this time, the second screw 407 can be inserted into the secondary reinforcement hole 205 and complete the splicing with the first screw 402. The first screw 402 and the second screw 407 cooperate to form a complete reinforcement structure network inside the structural beam body 201, which effectively improves the shear resistance of the structural beam body 201.

[0028] like Figure 7 and Figure 8 As shown, the top of the mounting plate 401 is symmetrically provided with multiple third splicing holes 409. A second bolt 410 is installed inside the third splicing hole 409. A third nut 411 is threaded onto the outer surface of the second bolt 410. The third nut 411 is located on the lower side of the mounting plate 401. The third splicing hole 409 is matched with the first splicing hole 313. After the mounting plate 401 is placed under the two brackets 301, the first splicing hole 313 is aligned with the third splicing hole 409. Then, the second bolt 410 is inserted from the top, and the third nut 411 is tightened from the bottom to clamp and fix the bracket 301 to the mounting plate 401.

[0029] In this invention, when reinforcing the floor slab 1 and the structural beam body 201 against shear, after setting anchor holes 7 at the location of the floor slab 1, expansion bolts are installed in the anchor holes 7. Then, the bracket 301 is placed below the floor slab 1, and the bracket 301 is fixed to the floor slab 1 using the first bolt 309. Through the coordinated arrangement of the stepped groove 202 and the buffer groove 203, the contact surface between the structural beam body 201 and the floor slab 1 can be transformed from a line surface to a multi-point contact point. At the same time, with the buffer groove 203 being suspended, the pressure on the floor slab 1 can be buffered and dissolved by the buffer groove 203, which plays a role in dispersing pressure and improving the bearing capacity of the structural beam body 201. The first damper 207 and the first spring 208 cooperate to lift the bottom of the buffer block 209. The first damper 207 and the first spring 208 provide buffering and shock absorption performance, allowing the pressure on the structural beam body 201 to be transmitted to the buffer block 209 and absorbed by it, thereby improving the overall load-bearing capacity of the structural beam body 201. When the bracket 301 is installed and fixed to the floor slab 1, the cooperation between the insert rod 307 and the limiting hole 8 can guide and position the bracket 301, ensuring that the bracket 301 is accurately installed in the predetermined position to reinforce the structural beam body 201. The buffering and shock absorption performance provided by the second damper 304 and the second spring 305 can provide buffering support for the installation position of the bracket 301. The cooperation between the positioning hole 302 and the limiting block 303 accommodates the first screw 40 2. When reinforcing the structure by inserting the first screw 402 into the main reinforcement hole 204 through the positioning hole 302, the first screw 402 aligns the limiting groove 403 with the limiting block 303 and inserts it, so that the threaded hole 404 of the first screw 402 remains in a downward position and communicates with the secondary reinforcement hole 205, which can play a role in limiting the installation, so that the second screw 407 and the first screw 402 are accurately assembled to complete the structural reinforcement. After the first nut 405 is clamped on the outside of the two fastening plates 310 and installed, the clamping plate 5 is inserted into the slot 312 through the connection of the clamping block 6 to complete the splicing and fixing with the fastening plate 310. The setting of the fastening plates 310 being locked and fixed by the clamping block 6 can make the fastening plate 310 provide an anti-loosening function for the first nut 405, improving the stability of the structure. To enhance the stability of the mounting structure of bracket 301 and mounting plate 401, after inserting the first screw 402 through the positioning hole 302 and the main reinforcement hole 204, the fastening plates 310 on both sides are clamped and fixed by the first nut 405. Then, the second screw 407 is screwed and inserted into the threaded hole 404. At this time, the second screw 407 can be inserted into the secondary reinforcement hole 205 to complete the splicing with the first screw 402. The first screw 402 and the second screw 407 cooperate to form a complete reinforcement structure network inside the structural beam body 201, effectively improving the shear resistance of the structural beam body 201. After placing the mounting plate 401 under the two brackets 301, the first splicing hole 313 is aligned with the third splicing hole 409, and then the second bolt 410 is inserted from the top.By tightening the third nut 411 from the bottom, the bracket 301 can be clamped and fixed to the mounting plate 401.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A shear-strengthening structure for concrete beams, characterized in that: Includes a floor slab (1), wherein a plurality of anchoring holes (7) are symmetrically provided at the bottom of the floor slab (1), and a plurality of limiting holes (8) are symmetrically provided at the bottom of the floor slab (1); A support beam assembly (2) is fixedly connected to the bottom of the floor slab (1). The support beam assembly (2) includes a structural beam body (201). Stepped grooves (202) are provided on both outer surfaces of the structural beam body (201). Multiple buffer grooves (203) are provided at equal intervals between the inner surfaces of the two stepped grooves (202). A connecting seat (206) is fixedly connected to the bottom of the buffer groove (203). Multiple first dampers (207) are uniformly fixedly connected to the bottom of the connecting seat (206). A first spring (208) is sleeved on the outer surface of the multiple first dampers (207). A buffer block (209) is fixedly connected between the upper surfaces of the multiple first dampers (207). Multiple main reinforcement holes (204) are provided at equal intervals on the outer surface of the structural beam body (201). Secondary reinforcement holes (205) are provided at equal intervals at the bottom of the structural beam body (201). The reinforcement component (3) is set to two, and the two reinforcement components (3) are symmetrically fixedly connected to the outer surface of the structural beam body (201). The reinforcement component (3) includes a bracket (301) and a fastening plate (310). The mounting assembly (4) is fixedly connected to the bottom of the structural beam body (201). The mounting assembly (4) includes a mounting plate (401) and a plurality of first screws (402). The top of the buffer block (209) is attached to the top of the inner side of the buffer groove (203), and the outer surface of the buffer block (209) is slidably connected to the inner surface of the connecting seat (206); The main reinforcing hole (204) and the secondary reinforcing hole (205) are connected, and the diameter of the main reinforcing hole (204) is larger than the diameter of the secondary reinforcing hole (205). The bracket (301) is symmetrically fixedly connected to the top of a second damper (304). The outer surfaces of the two second dampers (304) are each fitted with a second spring (305). A baffle (306) is fixedly connected to the upper end face of the second damper (304). A rod (307) is fixedly connected to the top of the baffle (306). The outer surface of the rod (307) is inserted into the inner surface of the limiting hole (8). The diameter of the baffle (306) is larger than the diameter of the limiting hole (8). The bracket (301) has multiple positioning holes (302) equidistantly opened on its outer surface. Limiting blocks (303) are symmetrically fixedly connected to the inner surface of the positioning holes (302). The bracket (301) has multiple mounting holes (308) equidistantly opened on its top. A first bolt (309) is provided inside the mounting hole (308). The first bolt (309) is matched with the anchor hole (7). The bracket (301) has multiple first splicing holes (313) equidistantly opened at the bottom, and the fastening plate (310) has multiple through holes (311) equidistantly opened on the outer surface, and the through holes (311) are matched with the positioning holes (302); The fastening plate (310) has slots (312) on both outer surfaces. The outer surface of the card plate (5) is symmetrically fixed with card blocks (6). The outer surface of the card blocks (6) is inserted into the inner surface of the slots (312). The first screw (402) has a threaded hole (404) on its outer surface. A first nut (405) is symmetrically threaded onto the outer surface of the first screw (402). The first nut (405) is located on the outside of the fastening plate (310). The first screw (402) is aligned with the main reinforcing hole (204). A limiting groove (403) is symmetrically provided on the outer surface of the first screw (402). The outer surface of the first screw (402) is inserted into the inner surface of the positioning hole (302). The limiting groove (403) is connected to the limiting... The mounting plate (401) is provided with a plurality of second splicing holes (406) at equal intervals on the top of the mounting plate (401). The second screw (407) is provided inside the second splicing hole (406). The outer surface of the second screw (407) is threaded with a second nut (408). The second nut (408) is located on the lower side of the mounting plate (401). The outer surface of the second screw (407) is threaded with the inner surface of the threaded hole (404). The second screw (407) is matched with the secondary reinforcement hole (205). The mounting plate (401) has a plurality of third splicing holes (409) symmetrically opened on the top. A second bolt (410) is installed inside the third splicing hole (409). A third nut (411) is threaded on the outer surface of the second bolt (410). The third nut (411) is located on the lower side of the mounting plate (401). The third splicing hole (409) is matched with the first splicing hole (313).

2. A method for strengthening a shear-resistant concrete beam, characterized in that, The shear strengthening structure for concrete beams as described in claim 1 includes the following steps: S1. When reinforcing the floor slab (1) and the structural beam body (201) against shear, the bracket (301) is fixed to the floor slab (1) using the first bolt (309). Through the combination of the stepped groove (202) and the buffer groove (203), the contact surface between the structural beam body (201) and the floor slab (1) is changed from a line surface to a multi-point contact point. At the same time, with the buffer groove (203) being suspended, the pressure on the floor slab (1) is buffered and resolved by the buffer groove (203), which plays a role in dispersing pressure and improving the bearing capacity of the structural beam body (201). S2. The first damper (207) and the first spring (208) work together to provide buffering and shock absorption performance for the bottom of the buffer block (209), so that the pressure on the structural beam body (201) is transmitted to the position of the buffer block (209) and is buffered and absorbed by the first damper (207) and the first spring (208), thereby improving the overall load-bearing capacity of the structural beam body (201). S3. By cooperating with the positioning hole (302) and the limiting block (303), when the first screw (402) is inserted into the main reinforcing hole (204) through the positioning hole (302) for structural reinforcement, the first screw (402) aligns the limiting groove (403) with the position of the limiting block (303) and inserts it, so that the threaded hole (404) of the first screw (402) remains in a downward position and is in communication with the secondary reinforcing hole (205); S4. Tighten the second screw (407) and insert it into the threaded hole (404). At this time, the second screw (407) can be inserted into the secondary reinforcement hole (205) and spliced ​​with the first screw (402). The first screw (402) and the second screw (407) cooperate to form a complete reinforcement structure network inside the structural beam body (201), which effectively improves the shear resistance of the structural beam body (201).

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