Fabricated light steel-steel fiber recycled concrete combined reinforcing structure and reinforcing method

Abstract

The invention discloses an assembly type light steel-steel fiber recycled concrete combined reinforcing structure and a reinforcing method, the reinforcing structure is used for reinforcing an existing concrete frame structure, and the reinforcing structure comprises four L-shaped prefabricated parts which can be spliced along the inner circumference of the concrete frame structure to form a square shape, the L-shaped prefabricated part comprises L-shaped light steel and recycled concrete which is poured outside the L-shaped light steel to wrap the L-shaped light steel, and steel fibers used for replacing a reinforcement cage are doped in the recycled concrete; the four first connecting components are used for fixing the four L-shaped prefabricated components to the concrete frame structure; and the four second connecting components are used for fixedly connecting every two adjacent L-shaped prefabricated components together. The reinforcing structure is high in stability and good in reinforcing effect, the reinforcing method adopting the reinforcing structure is small in field operation amount and short in construction period, the utilization rate of construction waste is increased, and environmental pollution is relieved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to an assembled light steel-steel fiber recycled concrete combined reinforcement structure and a reinforcement method. Background Art

[0002] At present, a large number of concrete buildings in my country have reached or are close to their designed service life, and cannot meet the load-bearing and earthquake-resistant requirements of current standards and specifications, and cannot guarantee the safety and compliance of subsequent use, so there is a huge demand for reinforcement. The existing reinforcement technologies for concrete frame structures, such as the section enlargement method, steel bonding method, and fiber material bonding method, all rely on on-site in-situ reinforcement, which belongs to the component-level reinforcement technology. There are problems such as low degree of assembly, large on-site manual workload, many wet operations, long construction period, difficulty in quality control, and impact on use during reinforcement. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and propose an assembled light steel-steel fiber recycled concrete combined reinforcement structure and reinforcement method, which has strong structural stability, good reinforcement effect, small on-site workload, short construction period, and improves the utilization rate of construction waste and reduces environmental pollution.

[0004] The present invention is implemented by the following scheme: an assembled light steel-steel fiber recycled concrete combined reinforcement structure is used to reinforce an existing concrete frame structure, and the reinforcement structure includes: Four L-shaped prefabricated components can be spliced ​​along the inner periphery of the concrete frame structure to form a "mouth" shape, the L-shaped prefabricated components include L-shaped light steel and recycled concrete poured outside the L-shaped light steel to wrap the L-shaped light steel, and the recycled concrete is mixed with steel fibers for replacing the steel cage; Four first connecting members, used to respectively fix the four L-shaped prefabricated members to the concrete frame structure; The four second connecting components are used to respectively fix and connect two adjacent L-shaped prefabricated components together.

[0005] A further improvement of the assembled light steel-steel fiber recycled concrete composite reinforcement structure of the present invention is that the first connecting member includes at least two anchor bars, at least one first reserved hole is respectively provided on the horizontal section and the vertical section of the L-shaped prefabricated member, and a positioning hole is opened at the position corresponding to each of the first reserved holes on the concrete frame structure, the number of the anchor bars is the same as the number of the first reserved holes, and they pass through the first reserved holes one by one and are anchored into the corresponding positioning holes to fix the L-shaped prefabricated member to the concrete frame structure.

[0006] A further improvement of the assembled light steel-steel fiber recycled concrete combined reinforcement structure of the present invention is that the anchor bar is bonded and fixed to the corresponding first reserved hole by an adhesive.

[0007] A further improvement of the assembled light steel-steel fiber recycled concrete combined reinforcement structure of the present invention is that: the cross-section of the L-shaped light steel is H-shaped; the first reserved hole includes a first hole section opened on the two flange plates of the L-shaped light steel along the anchoring direction corresponding to the anchor bar and a second hole section opened on the recycled concrete; the first reserved holes are arranged in pairs, and at least one pair of the first reserved holes is respectively arranged on the horizontal section and the vertical section of the L-shaped prefabricated component, and the two first reserved holes in each pair are respectively located on the opposite sides of the web of the L-shaped light steel.

[0008] A further improvement of the assembled light steel-steel fiber recycled concrete combined reinforcement structure of the present invention is that: the two ends of the L-shaped light steel extend out of the recycled concrete respectively and form two extension sections; the second connecting member includes a lap plate for bridging between two adjacent extension sections of two adjacent L-shaped light steels, lap bolts for fixing the lap plate to the two adjacent extension sections, and grouting material for pouring between adjacent recycled concretes and wrapping the lap plate and the two extension sections.

[0009] A further improvement of the assembled light steel-steel fiber recycled concrete composite reinforcement structure of the present invention is that: the cross-section of the L-shaped light steel is H-shaped; a second reserved hole is opened on the web of the L-shaped light steel at a position corresponding to the extension section; the lap plate includes a web connecting plate, and the two ends of the web connecting plate are fixedly connected to the second reserved holes at the two adjacent extension sections by the lap bolts.

[0010] A further improvement of the assembled light steel-steel fiber recycled concrete composite reinforcement structure of the present invention is that: a third reserved hole is opened on at least one flange plate of the L-shaped light steel at a position corresponding to the extension section; the lap plate also includes at least one flange plate connecting plate, and the two ends of the flange plate connecting plate are fixedly connected to the third reserved holes at two adjacent extension sections through the lap bolts.

[0011] The present invention also provides an assembled light steel-steel fiber recycled concrete combined reinforcement method, which uses the assembled light steel-steel fiber recycled concrete combined reinforcement structure as described above to reinforce the existing concrete frame structure. The reinforcement method comprises the following steps: S1: arranging four L-shaped prefabricated components at four inner corners of the concrete frame structure respectively, and fixing the four L-shaped prefabricated components to the concrete frame structure respectively by using four first connecting components; S2: using four second connecting members to respectively fix and connect two adjacent L-shaped prefabricated members together.

[0012] The further improvement of the assembled light steel-steel fiber recycled concrete combined reinforcement method of the present invention is that: the first connecting member includes at least two anchor bars, and at least one first reserved hole is respectively provided on the horizontal section and the vertical section of the L-shaped prefabricated member, and the number of the anchor bars is the same as the number of the first reserved holes; Before arranging the four L-shaped prefabricated components at the four inner corners of the concrete frame structure respectively, a positioning hole is firstly opened on the concrete frame structure at a position corresponding to each of the first reserved holes; When the four L-shaped prefabricated components are fixed to the concrete frame structure respectively by using four first connecting components, the anchor bars are passed through the first reserved holes one by one and anchored into the corresponding positioning holes to fix the L-shaped prefabricated components to the concrete frame structure.

[0013] The further improvement of the assembled light steel-steel fiber recycled concrete combined reinforcement method of the present invention is that: the two ends of the L-shaped light steel extend out of the steel fiber recycled concrete respectively to form two extension sections; the second connecting member includes a lap plate, a lap bolt and a grouting material; When two adjacent L-shaped prefabricated components are fixedly connected together by using the second connecting member, a lap plate is firstly laid between two adjacent extension sections of two adjacent L-shaped light steels, and then the lap plate is fixedly connected to the two adjacent extension sections by using lap bolts, and finally grouting material is poured between the adjacent steel fiber recycled concrete, and the grouting material wraps the lap plate and the two extension sections.

[0014] Compared with the prior art, the advantages of the present invention are: 1. The present invention adopts prefabricated components to be directly assembled and reinforced on site, which can quickly reinforce the concrete frame structure, reduce the amount of wet work on site, and shorten the construction period.

[0015] 2. On the one hand, the present invention fixes the prefabricated components to the inner side of the concrete frame structure through the first connecting member, so that they can cooperate with the concrete frame structure to bear force; on the other hand, the prefabricated components are assembled into a closed "mouth"-shaped reinforcement structure through the second connecting member, so that the integrity of the reinforcement structure is improved and the overall seismic resistance of the concrete frame structure is enhanced; moreover, by intersecting with the external reinforcement structure system and through the internal reinforcement form, the flexibility of the reinforcement structure arrangement is increased.

[0016] 3. The present invention arranges the prefabricated components into an L-shape and arranges them at the inner corners of the concrete frame structure, so that the splicing nodes between adjacent L-shaped prefabricated components are arranged in the middle of the frame column or main beam of the concrete frame structure with less stress, thereby reducing the stress damage of the splicing nodes and ensuring the safety of the splicing nodes, thereby achieving the performance of adjacent L-shaped prefabricated components working in coordination.

[0017] 4. The prefabricated components of the present invention adopt a light steel-steel fiber recycled concrete composite structure, wherein the recycled concrete promotes the resource utilization of construction waste and reduces environmental pollution. By eliminating the steel cage in the concrete and replacing it with steel fibers, the component structure is simplified, which is convenient for production and construction. At the same time, the crack resistance of concrete can be improved. Through the combination of steel fiber recycled concrete, the light steel can be restrained to prevent the light steel from being stably damaged when subjected to stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a structural front view of the reinforcement structure of the present invention in the reinforcement state.

[0020] Figure 2 It is a structural perspective view of the reinforcement structure of the present invention in the reinforced state.

[0021] Figure 3 It is a front view of the assembly state of the L-shaped prefabricated component through the second connecting component in the present invention.

[0022] Figure 4 It is the front view of the L-shaped prefabricated component in the present invention.

[0023] Figure 5 for Figure 4 Right side view of the structure shown.

[0024] Figure 6 for Figure 4 Top view of the structure shown.

[0025] Figure 7 for Figure 3 A magnified schematic diagram of center A.

[0026] Figure 8 for Figure 7 Top view of the structure shown.

[0027] In the figure: 1. concrete frame structure; 11. upper main beam; 12. lower main beam; 13. frame column; 14. floor slab; 2. reinforcement structure; 21. L-shaped prefabricated component; 211. L-shaped light steel; 212. recycled concrete; 213. extension section; 22. first reserved hole; 23. second reserved hole; 24. third reserved hole; 41. grouting material; 42. web connecting plate; 43. flange plate connecting plate; 44. first bolt; 45. second bolt; 51. anchor bar. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0029] The following is a further detailed description of an assembled light steel-steel fiber recycled concrete combined reinforcement structure and a reinforcement method for reinforcing an existing concrete frame structure of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0030] See also Figure 1~Figure 3 As shown, a prefabricated light steel-steel fiber recycled concrete combined reinforcement structure is used to reinforce an existing concrete frame structure 1, and the reinforcement structure 2 includes four L-shaped prefabricated components 21, four first connecting components and four second connecting components. Among them: the four L-shaped prefabricated components 21 can be spliced ​​along the inner periphery of the concrete frame structure 1 to form a "mouth" shape, and the L-shaped prefabricated component 21 includes an L-shaped light steel 211 and a recycled concrete 212 poured outside the L-shaped light steel 211 to wrap the L-shaped light steel 211, and the recycled concrete is mixed with steel fibers for replacing steel cages. This embodiment adopts a light steel-steel fiber recycled concrete combined structure, wherein the recycled concrete promotes the resource utilization of construction waste and reduces environmental pollution, and by eliminating the steel cage in the concrete and replacing it with steel fibers, the component structure is simplified, and the generation and construction are convenient. At the same time, the crack resistance of the concrete can be improved. Through the combination of steel fiber recycled concrete, the light steel can be restrained to prevent the light steel from being stably damaged by force. The four first connection members are used to respectively fix the four L-shaped prefabricated components 21 to the concrete frame structure 1. The four second connection members are used to respectively fix and connect two adjacent L-shaped prefabricated components 21 together.

[0031] The present invention adopts L-shaped prefabricated components 21 for direct on-site assembly and reinforcement, which can quickly reinforce the concrete frame structure 1, reduce the amount of wet work on site, and shorten the construction period. By setting the prefabricated components in an L shape and setting them at the inner corners of the concrete frame structure 1, the splicing nodes (such as Figure 3 The joint node (A) is arranged at the middle of the frame column 13 or the main beam (including the upper main beam 11 and the lower main beam 12) of the concrete frame structure 1 where the stress is relatively small, so as to reduce the stress damage of the joint node and ensure the safety of the joint node, thereby achieving the performance of the adjacent L-shaped prefabricated components 21 working in coordination.

[0032] In some preferred embodiments, see Figure 2 , Figure 5 and Figure 6 As shown, the first connecting member includes at least two anchor bars 51, and at least one first reserved hole 22 is respectively provided on the horizontal section and the vertical section of the L-shaped precast member 21. A positioning hole (not shown in the figure) is provided at the position corresponding to each of the first reserved holes 22 on the concrete frame structure 1. The number of the anchor bars 51 is the same as the number of the first reserved holes 22, and they pass through the first reserved holes 22 one by one and are anchored into the corresponding positioning holes to fix the L-shaped precast member 21 to the concrete frame structure 1. It should be noted that the actual concrete frame structure 1 also includes a floor slab 14 fixed between the two frame columns 13 and located on the top of the lower main beam 12. Therefore, corresponding positioning holes are provided on the floor slab 14 and the lower main beam 12. Among them, the two L-shaped prefabricated components 21 respectively located at the two inner corners between the lower main beam 12 and the two frame columns 13 are both arranged on the floor 14, and the horizontal section of the L-shaped prefabricated component 21 is fixed to the lower main beam 12 and the floor 14 at the same time through the corresponding anchor bars 51, and the vertical section is fixed to the corresponding frame column 13 through the corresponding anchor bars 51, and the other two L-shaped prefabricated components 21 are fixed to the upper main beam 11 and the corresponding frame column 13. Preferably, in order to improve the connection stability, the anchor bar 51 and the corresponding first reserved hole 22 are bonded and fixed by an adhesive.

[0033] In some preferred embodiments, see Figure 2 , Figure 5 and Figure 6As shown, the cross section of the L-shaped light steel 211 is H-shaped. The first reserved hole 22 includes a first hole section opened on the two flange plates of the L-shaped light steel 211 along the anchoring direction corresponding to the anchor bar 51 and a second hole section opened on the recycled concrete 212. The first reserved holes 22 are arranged in pairs, and at least one pair of the first reserved holes 22 is respectively arranged on the horizontal section and the vertical section of the L-shaped prefabricated component 21. In this embodiment, the horizontal section of each L-shaped prefabricated component 21 is provided with 3 pairs of first reserved holes 22, and the vertical section is provided with 2 pairs of first reserved holes 22, and the adjacent two pairs of first reserved holes 22 are arranged at intervals, and the two first reserved holes 22 of each pair are respectively located on the opposite sides of the web of the L-shaped light steel 211.

[0034] In some preferred embodiments, see Figure 1 to Figure 8 As shown: the two ends of the L-shaped light steel 211 extend out of the recycled concrete 212 respectively, and form two extension sections 213. The second connecting member includes a lap plate for bridging between two adjacent extension sections 213 of two adjacent L-shaped light steels 211, a lap bolt for fixing the lap plate to the two adjacent extension sections 213, and a grouting material 41 for pouring between the adjacent recycled concrete 212 and wrapping the lap plate and the two extension sections 213. Specifically in this embodiment, as Figure 5~Figure 8 As shown, the cross section of the L-shaped light steel 211 is H-shaped, and a second reserved hole 23 is provided at a position corresponding to the extension section 213 on the web of the L-shaped light steel 211, and a third reserved hole 24 is provided at a position corresponding to the extension section 213 on at least one flange plate of the L-shaped light steel 211. The lap plate includes a web connecting plate 42 and a flange connecting plate 43, and the lap bolts include a first bolt 44 and a second bolt 45. The two ends of the web connecting plate 42 are fixedly connected to the second reserved holes 23 at two adjacent extension sections 213 through the first bolt 44, and the two ends of the flange connecting plate 43 are fixedly connected to the third reserved holes 24 at two adjacent extension sections 213 through the second bolt 45. Preferably, a plurality of the second reserved holes 23 are arranged at intervals at the extension section 213 of each web. At least one pair of the third reserved holes 24 is disposed at the extension section 213 of each flange plate, and the two third reserved holes 24 of each pair are respectively located at opposite sides of the web plate.

[0035] On the one hand, the present invention fixes the L-shaped prefabricated component 21 to the inner side of the concrete frame structure 1 through the first connecting member, so that it can cooperate with the concrete frame structure 1 to bear force; on the other hand, the L-shaped prefabricated component 21 is assembled into a closed "mouth"-shaped reinforcement structure through the second connecting member, so that the integrity of the reinforcement structure 2 is improved, and the overall seismic resistance of the concrete frame structure 1 is enhanced; moreover, by intersecting with the external reinforcement structure system and using the internal reinforcement form, the flexibility of the reinforcement structure arrangement is increased.

[0036] A method for reinforcing a composite light steel-steel fiber recycled concrete assembly, see Figure 1 to Figure 8 As shown, the concrete frame structure 1 is reinforced by using the reinforcement structure 2 as described above, and the reinforcement method includes the steps of: Step S1: four L-shaped prefabricated components 21 are respectively arranged at four inner corners of the concrete frame structure 1, and four first connecting components are used to fix the four L-shaped prefabricated components 21 to the concrete frame structure 1 respectively.

[0037] For the first connecting member using anchor bars 51, Figure 2 , Figure 5 and Figure 6 As shown: before the four L-shaped prefabricated components 21 are respectively arranged at the four inner corners of the concrete frame structure 1, positioning holes are first opened at the positions corresponding to each of the first reserved holes 22 on the concrete frame structure 1 (including the upper main beam 11, the lower main beam 12, the frame column 13 and the floor 14), and the dust in the holes is cleaned. Then the four L-shaped prefabricated components 21 are respectively aligned with the corresponding positioning holes and arranged at the four inner corners. When the four L-shaped prefabricated components 21 are respectively fixed to the concrete frame structure 1 by using the four first connecting components, each anchor bar 51 is passed through the corresponding first reserved hole 22 one by one, and an adhesive is placed so that the anchor bar 51 is anchored into the corresponding positioning hole and bonded and fixed to the corresponding first reserved hole 22 at the same time, thereby achieving the fixing of the L-shaped prefabricated component 21 to the concrete frame structure 1.

[0038] Step S2: using four second connecting members to respectively fix and connect two adjacent L-shaped prefabricated members 21 together.

[0039] For the second connection member using the lap plate, lap bolts and grouting material 41, as Figure 5~Figure 8As shown in the figure, when two adjacent L-shaped prefabricated components 21 are fixedly connected together by using the second connecting member, the lap plate is firstly laid between the adjacent two extension sections 213 of the adjacent two L-shaped light steels 211. For the L-shaped prefabricated component 21 with an H-shaped cross section and the lap plate structure including the web plate connecting plate 42 and the flange plate connecting plate 43, the web plate connecting plate 42 is respectively laid between the corresponding web plates and the corresponding flange plates of the L-shaped light steel 211. Then, the lap plate is fixedly connected to the two adjacent extension sections 213 by using lap bolts, that is, the web plate connecting plate 42 and the flange plate connecting plate 43 are fixed by using the first bolt 44 and the second bolt 45 respectively. Finally, the joints between adjacent L-shaped prefabricated components 21 are supported by formwork, and grouting material 41 (such as high-strength mortar) is poured, so that the grouting material 41 wraps the lap plate and the two extension sections 213, and is fixed between the adjacent recycled concrete 212. Preferably, after the post-cast part is cured and formed, its surface is flush with the adjacent recycled concrete 212, such as Figure 1 shown.

[0040] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0041] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An assembled light steel-steel fiber recycled concrete composite reinforcement structure, used to reinforce an existing concrete frame structure, characterized in that: The reinforcement structure comprises: Four L-shaped prefabricated components can be spliced ​​along the inner periphery of the concrete frame structure to form a "mouth" shape, the L-shaped prefabricated components include L-shaped light steel and recycled concrete poured outside the L-shaped light steel to wrap the L-shaped light steel, the recycled concrete is mixed with steel fibers for replacing the steel cage; Four first connecting members, used to respectively fix the four L-shaped prefabricated members to the concrete frame structure; The four second connecting components are used to respectively fix and connect two adjacent L-shaped prefabricated components together.

2. The assembled light steel-steel fiber recycled concrete composite reinforcement structure according to claim 1 is characterized in that: The first connecting member includes at least two anchor bars, and at least one first reserved hole is respectively provided on the horizontal section and the vertical section of the L-shaped prefabricated member. A positioning hole is opened on the concrete frame structure at a position corresponding to each of the first reserved holes. The number of the anchor bars is the same as the number of the first reserved holes, and the anchor bars pass through the first reserved holes one by one and are anchored into the corresponding positioning holes to fix the L-shaped prefabricated member to the concrete frame structure.

3. The assembled light steel-steel fiber recycled concrete composite reinforcement structure according to claim 2 is characterized in that: The anchor bar is bonded and fixed to the corresponding first reserved hole by an adhesive.

4. The assembled light steel-steel fiber recycled concrete composite reinforcement structure according to claim 2 is characterized in that: The cross-section of the L-shaped light steel is H-shaped; the first reserved hole includes a first hole section opened on the two flange plates of the L-shaped light steel along the anchoring direction corresponding to the anchor bar and a second hole section opened on the recycled concrete; the first reserved holes are arranged in pairs, and at least one pair of the first reserved holes is respectively arranged on the horizontal section and the vertical section of the L-shaped prefabricated component, and the two first reserved holes in each pair are respectively located on the opposite sides of the web of the L-shaped light steel.

5. The assembled light steel-steel fiber recycled concrete composite reinforcement structure according to claim 1, characterized in that: The two ends of the L-shaped light steel extend out of the recycled concrete respectively and form two extension sections; the second connecting member includes a lap plate for bridging between two adjacent extension sections of two adjacent L-shaped light steels, lap bolts for fixing the lap plate to the two adjacent extension sections, and grouting material for pouring between adjacent recycled concretes and wrapping the lap plate and the two extension sections.

6. The assembled light steel-steel fiber recycled concrete composite reinforcement structure according to claim 5, characterized in that: The cross-section of the L-shaped light steel is H-shaped; a second reserved hole is opened on the web of the L-shaped light steel at a position corresponding to the extension section; the lap plate includes a web connecting plate, and the two ends of the web connecting plate are fixedly connected to the second reserved holes at two adjacent extension sections through the lap bolts.

7. The assembled light steel-steel fiber recycled concrete composite reinforcement structure according to claim 6, characterized in that: A third reserved hole is provided on at least one flange plate of the L-shaped light steel at a position corresponding to the extension section; the lap plate also includes at least one flange plate connecting plate, and the two ends of the flange plate connecting plate are fixedly connected to the third reserved holes at two adjacent extension sections through the lap bolts.

8. A method for reinforcing a composite assembly of light steel and steel fiber recycled concrete, characterized in that: The existing concrete frame structure is reinforced by using the assembled light steel-steel fiber recycled concrete combined reinforcement structure as claimed in claim 1, and the reinforcement method comprises the steps of: S1: arranging four L-shaped prefabricated components at four inner corners of the concrete frame structure respectively, and fixing the four L-shaped prefabricated components to the concrete frame structure respectively by using four first connecting components; S2: using four second connecting members to respectively fix and connect two adjacent L-shaped prefabricated members together.

9. The assembled light steel-steel fiber recycled concrete combined reinforcement method according to claim 8, characterized in that: The first connecting member includes at least two anchor bars, and at least one first reserved hole is respectively provided on the horizontal section and the vertical section of the L-shaped prefabricated member, and the number of the anchor bars is the same as the number of the first reserved holes; Before arranging the four L-shaped prefabricated components at the four inner corners of the concrete frame structure respectively, a positioning hole is firstly opened on the concrete frame structure at a position corresponding to each of the first reserved holes; When the four L-shaped prefabricated components are fixed to the concrete frame structure respectively by using four first connecting components, the anchor bars are passed through the first reserved holes one by one and anchored into the corresponding positioning holes to fix the L-shaped prefabricated components to the concrete frame structure.

10. The assembled light steel-steel fiber recycled concrete combined reinforcement method according to claim 8, characterized in that: The two ends of the L-shaped light steel extend out of the steel fiber recycled concrete respectively to form two extension sections; the second connecting member includes a lap plate, a lap bolt and a grouting material; When two adjacent L-shaped prefabricated components are fixedly connected together by using the second connecting member, a lap plate is firstly laid between two adjacent extension sections of two adjacent L-shaped light steels, and then the lap plate is fixedly connected to the two adjacent extension sections by using lap bolts, and finally grouting material is poured between the adjacent steel fiber recycled concrete, and the grouting material wraps the lap plate and the two extension sections.

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