Fabricated light steel-fiber reinforced recycled concrete composite reinforced structure and reinforcing method

Abstract

The application discloses an assembled light steel-steel fiber recycled concrete combined reinforcing structure and a reinforcing method, which is used for reinforcing an existing concrete frame structure. The reinforcing structure comprises four L-shaped prefabricated components which can be spliced into a'mouth' type along the inner periphery of the concrete frame structure. The L-shaped prefabricated component comprises an L-shaped light steel and recycled concrete which is poured outside the L-shaped light steel to wrap the L-shaped light steel. Steel fibers are mixed in the recycled concrete to replace a steel reinforcement cage. Four first connecting components are used for fixing the four L-shaped prefabricated components to the concrete frame structure respectively. Four second connecting components are used for fixing and connecting every two adjacent L-shaped prefabricated components together respectively. The reinforcing structure has high stability and good reinforcing effect. The reinforcing method using the reinforcing structure has small on-site operation amount, short construction period, improved building waste utilization rate and reduced environmental pollution.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, and in particular to a fabricated light steel-steel fiber recycled concrete combined reinforcing structure and reinforcing method. BACKGROUND

[0002] At present, a large number of concrete buildings in China have reached or approached their design service life, and cannot meet the current standard bearing and seismic requirements, which cannot guarantee the safety and compliance of subsequent use, and there is a huge reinforcement demand. The existing reinforcement technology of concrete frame structure, such as the method of increasing section, the method of sticking steel, the method of sticking fiber material, etc., all have the principle of on-site strengthening, which belongs to the component level reinforcement technology, and has the problems of low degree of prefabrication, large amount of manual work on site, more wet work, long construction period, difficult quality control, and influence on use during reinforcement, etc. SUMMARY

[0003] The present application aims to overcome the defects of the prior art, and provides a fabricated light steel-steel fiber recycled concrete combined reinforcing structure and reinforcing method, which has strong structural stability, good reinforcing effect, small amount of on-site work, short construction period, and improves the utilization rate of construction waste and reduces environmental pollution.

[0004] The present application is implemented by the following scheme, a fabricated light steel-steel fiber recycled concrete combined reinforcing structure for reinforcing an existing concrete frame structure, the reinforcing structure comprising:

[0005] Four L-shaped prefabricated components, which can be spliced into a "mouth" shape along the inner periphery of the concrete frame structure, the L-shaped prefabricated component comprising an L-shaped light steel and recycled concrete poured outside the L-shaped light steel to wrap the L-shaped light steel, the recycled concrete containing steel fibers for replacing the steel reinforcement cage;

[0006] Four first connecting components for fixing the four L-shaped prefabricated components to the concrete frame structure, respectively;

[0007] Four second connecting components for fixedly connecting each adjacent two L-shaped prefabricated components together.

[0008] Further improvement of the fabricated light steel-steel fiber recycled concrete combined reinforcing structure is that the first connecting component comprises at least two anchor bars, the horizontal section and the vertical section of the L-shaped prefabricated component are respectively provided with at least one first reserved hole, the concrete frame structure is provided with a positioning hole corresponding to the position of each first reserved hole, the number of anchor bars is the same as the number of 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 component to the concrete frame structure.

[0009] The further improvement of the assembled light steel-steel fiber recycled concrete combined reinforcing structure lies in that the anchor and the corresponding first reserved hole are fixed by adhesive.

[0010] The further improvement of the assembled light steel-steel fiber recycled concrete combined reinforcing structure lies in that the cross section of the L-shaped light steel is H-shaped; the first reserved hole includes a first hole segment opened on the two flange plates of the L-shaped light steel along the anchoring direction of the corresponding anchor and a second hole segment opened on the recycled concrete; the first reserved holes are in pairs, and at least one pair of the first reserved holes is arranged on the horizontal section and the vertical section of the L-shaped prefabricated component respectively, and the two first reserved holes of each pair are located on the opposite sides of the web of the L-shaped light steel.

[0011] The further improvement of the assembled light steel-steel fiber recycled concrete combined reinforcing structure lies in that the two ends of the L-shaped light steel respectively extend into the recycled concrete and form two extension sections; the second connecting component includes a lap plate used for being arranged between the adjacent two extension sections of the adjacent two L-shaped light steels, a lap bolt used for fixedly connecting the lap plate and the adjacent two extension sections, and a grouting material used for being filled between the adjacent recycled concretes and wrapping the lap plate and the two extension sections.

[0012] The further improvement of the assembled light steel-steel fiber recycled concrete combined reinforcing structure lies in that the cross section of the L-shaped light steel is H-shaped; the second reserved hole is opened on the web of the L-shaped light steel at a position corresponding to the extension section; and the lap plate includes a web connecting plate, and the two ends of the web connecting plate are fixedly connected with the second reserved holes at the adjacent two extension sections through the lap bolts.

[0013] The further improvement of the assembled light steel-steel fiber recycled concrete combined reinforcing structure lies in that the 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; and the lap plate further includes at least one flange plate connecting plate, and the two ends of the flange plate connecting plate are fixedly connected with the third reserved holes at the adjacent two extension sections through the lap bolts.

[0014] The application further provides an assembled light steel-steel fiber recycled concrete combined reinforcing method, which adopts the assembled light steel-steel fiber recycled concrete combined reinforcing structure to reinforce an existing concrete frame structure, and the reinforcing method comprises the following steps:

[0015] S1: four L-shaped prefabricated components are arranged at four inside corners of the concrete frame structure respectively, and four first connecting components are used to fix the four L-shaped prefabricated components to the concrete frame structure respectively;

[0016] S2: four second connecting components are used to fix and connect every two adjacent L-shaped prefabricated components together respectively.

[0017] The further improvement of the prefabricated light steel-steel fiber recycled concrete combined reinforcement method is that the first connecting component comprises at least two anchor bars, at least one first reserved hole is arranged on the horizontal section and the vertical section of the L-shaped prefabricated component respectively, and the number of the anchor bars is the same as the number of the first reserved holes.

[0018] Before the four L-shaped prefabricated components are arranged at the four inside corners of the concrete frame structure respectively, a positioning hole is opened on the concrete frame structure at a position corresponding to each first reserved hole;

[0019] When the four first connecting components are used to fix the four L-shaped prefabricated components to the concrete frame structure respectively, the anchor bars are correspondingly penetrated through the first reserved holes and anchored into the corresponding positioning holes, so that the L-shaped prefabricated components are fixed to the concrete frame structure.

[0020] The further improvement of the prefabricated light steel-steel fiber recycled concrete combined reinforcement method is that two ends of the L-shaped light steel respectively extend the steel fiber recycled concrete and form two extension sections; the second connecting component comprises a lap plate, a lap bolt and grouting material.

[0021] When the two adjacent L-shaped prefabricated components are fixed and connected together by the second connecting component, the lap plate is first arranged between the two adjacent extension sections of the two adjacent L-shaped light steels, then the lap plate and the two adjacent extension sections are fixed and connected by the lap bolt, finally the grouting material is poured between the two adjacent steel fiber recycled concretes, and the grouting material wraps the lap plate and the two extension sections.

[0022] Compared with the prior art, the advantages of the present application are that:

[0023] 1. The prefabricated components are 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.

[0024] 2, One aspect of the present application is to fix the prefabricated component to the inside of the concrete frame structure through the first connecting component, which can bear force in cooperation with the concrete frame structure; another aspect is to assemble the prefabricated component into a closed "mouth" type reinforcing structure through the second connecting component, so that the integrity of the reinforcing structure is improved, and the overall seismic capacity of the concrete frame structure is enhanced; moreover, intersecting with the external additional reinforcing structure system, the flexibility of the reinforcing structure arrangement is increased through the internal additional reinforcing form.

[0025] 3, The present application sets the prefabricated component as L-shaped and sets it at the inside corner of the concrete frame structure, so that the splicing joint between the adjacent L-shaped prefabricated components is arranged at the middle part of the frame column or the main beam with small stress, thereby reducing the stress damage of the splicing joint and ensuring the safety of the splicing joint, so as to achieve the performance of the adjacent L-shaped prefabricated components working in cooperation.

[0026] 4, The prefabricated component of the present application adopts a light steel-steel fiber recycled concrete composite structure, wherein the recycled concrete promotes the resource utilization of construction waste and reduces environmental pollution, and by canceling the steel cage in the concrete and replacing it with steel fibers, the component structure is simplified, the generation and construction are facilitated, and the crack resistance of the concrete is improved, the combination of steel fiber recycled concrete can constrain the light steel and prevent the light steel from being damaged under stress. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 It is a structure front view of the reinforcing structure of the present application in the reinforcing state.

[0029] Figure 2 It is a structure perspective view of the reinforcing structure of the present application in the reinforcing state.

[0030] Figure 3 It is a main view of the L-shaped prefabricated component in the present application in the assembling state through the second connecting component.

[0031] Figure 4 It is a main view of the L-shaped prefabricated component in the present application.

[0032] Figure 5 It is a right side view of the structure shown. Figure 4

[0033] Figure 6 Figure 4 ​​A top view of the structure shown.

[0034] Figure 7 As Figure 3 An enlarged schematic view at A in the middle.

[0035] Figure 8 As Figure 7 A top view of the structure shown.

[0036] In the figure: 1, concrete frame structure; 11, upper main beam; 12, lower main beam; 13, frame column; 14, floor slab; 2, reinforcing 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 connecting plate; 44, first bolt; 45, second bolt; 51, anchor bar. DETAILED DESCRIPTION

[0037] The present application is described below by way of specific embodiments. Other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure of this specification. The present application can also be implemented or applied by other different embodiments, and the details in this specification can be modified or changed based on different views and applications without departing from the spirit of the present application.

[0038] The assembled light steel-fiber recycled concrete combined reinforcing structure and the reinforcing method for reinforcing an existing concrete frame structure of the present application are described in further detail below in combination with the accompanying drawings and specific embodiments.

[0039] Reference is made to Figures 1-3As shown, a prefabricated light steel-steel fiber recycled concrete combined reinforcing structure is used for reinforcing an existing concrete frame structure 1, the reinforcing structure 2 includes four L-shaped prefabricated components 21, four first connecting components and four second connecting components. Wherein: the four L-shaped prefabricated components 21 can be spliced into a "mouth" shape along the inner periphery of the concrete frame structure 1, 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 the steel cage. The 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 canceling the steel cage in the concrete and replacing it with steel fibers, the component structure is simplified, the generation and construction are facilitated, and the crack resistance of the concrete is improved, and through the combination of the steel fiber recycled concrete, the light steel can be constrained to prevent stable damage of the light steel under stress. Four first connecting components are used to fix the four L-shaped prefabricated components 21 to the concrete frame structure 1 respectively. Four second connecting components are used to fix and connect each adjacent two L-shaped prefabricated components 21 together.

[0040] The present application adopts L-shaped prefabricated components 21 to directly assemble and reinforce on site, 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 component as L-shaped and arranging it at the inside corner of the concrete frame structure 1, the splicing joint (such as A of Figure 3 ) between adjacent L-shaped prefabricated components 21 is arranged at the middle part 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 which has smaller stress, so that the stress damage of the splicing joint is reduced, the safety of the splicing joint is ensured, and the performance of the adjacent L-shaped prefabricated components 21 working together is achieved.

[0041] In some preferred embodiments, refer to Figure 2 , Figure 5 and Figure 6As shown, the first connecting member includes at least two anchor bars 51, the horizontal section and the vertical section of the L-shaped prefabricated component 21 are respectively provided with at least one first reserved hole 22, and the concrete frame structure 1 is provided with a positioning hole (not shown in the figure) corresponding to the position of each first reserved hole 22, the number of the anchor bars 51 is the same as the number of the first reserved holes 22, and the anchor bars 51 pass through the first reserved holes 22 one by one and are anchored into the corresponding positioning holes to fix the L-shaped prefabricated component 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 two frame columns 13 and located at the top of the lower main beam 12, so the floor slab 14 and the lower main beam 12 are both provided with corresponding positioning holes. Among them, the two L-shaped prefabricated components 21 located between the lower main beam 12 and the two frame columns 13 at two inside corners are both arranged on the floor slab 14, the horizontal section of the L-shaped prefabricated component 21 is fixed to the lower main beam 12 and the floor slab 14 through the corresponding anchor bars 51, and the vertical section is fixed to the corresponding frame column 13 through the corresponding anchor bar 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 stability of the connection, the anchor bars 51 and the corresponding first reserved holes 22 are bonded and fixed by an adhesive.

[0042] In some preferred embodiments, as shown in Figure 2 , Figure 5 and Figure 6 , 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 in the anchoring direction of the corresponding anchor bar 51 and a second hole section opened on the recycled concrete 212. The first reserved holes 22 are arranged in pairs, and the horizontal section and the vertical section of the L-shaped prefabricated component 21 are respectively provided with at least one pair of first reserved holes 22. In this embodiment, the horizontal section of each L-shaped prefabricated component 21 is provided with three pairs of first reserved holes 22, and the vertical section is provided with two 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 located on opposite sides of the web of the L-shaped light steel 211.

[0043] In some preferred embodiments, as shown in Figures 1-8 : The two ends of the L-shaped light steel 211 respectively extend out of the recycled concrete 212 and form two extension sections 213. The second connecting member includes a lap plate for being arranged between adjacent two extension sections 213 of adjacent two L-shaped light steels 211, a lap bolt for fixing and connecting the lap plate and the adjacent two extension sections 213, and a grouting material 41 for being filled between adjacent recycled concretes 212 and wrapping the lap plate and the two extension sections 213. Specifically, in this embodiment, as shown in Figures 5-8As shown, the L-shaped light steel 211 has an H-shaped cross-section. A second reserved hole 23 is provided on the web of the L-shaped light steel 211 at a position corresponding to the extension section 213. A third reserved hole 24 is provided on at least one flange of the L-shaped light steel 211 at a position corresponding to the extension section 213. The lap plate includes a web connecting plate 42 and a flange connecting plate 43. The lap bolts include a first bolt 44 and a second bolt 45. The two ends of the web connecting plate 42 are respectively fixedly connected to the second reserved holes 23 at two adjacent extension sections 213 via the first bolt 44. The two ends of the flange connecting plate 43 are respectively fixedly connected to the third reserved holes 24 at two adjacent extension sections 213 via the second bolt 45. Preferably, multiple second reserved holes 23 are spaced apart at each extension section 213 of the web. At least one pair of the third reserved holes 24 are provided at the extension section 213 of each flange, and the two third reserved holes 24 in each pair are located on opposite sides of the web.

[0044] On the one hand, the present invention fixes the L-shaped prefabricated component 21 to the inside of the concrete frame structure 1 through the first connecting member, so that it can work together with the concrete frame structure 1 to bear the force; on the other hand, the L-shaped prefabricated component 21 is assembled into a closed "U"-shaped reinforcement structure through the second connecting member, so as to improve the integrity of the reinforcement structure 2 and enhance the overall seismic resistance of the concrete frame structure 1; moreover, in contrast to the external reinforcement structure system, the internal reinforcement form increases the flexibility of the reinforcement structure layout.

[0045] A prefabricated light steel-steel fiber recycled concrete composite reinforcement method, see reference. Figures 1-8 As shown, the reinforced concrete frame structure 1 is reinforced using the reinforcement structure 2 as described above. The reinforcement method includes the following steps:

[0046] Step S1: Set four L-shaped prefabricated components 21 at the four internal corners of the concrete frame structure 1, and fix the four L-shaped prefabricated components 21 to the concrete frame structure 1 using four first connecting components.

[0047] For the first connecting member using anchor bar 51, such as Figure 2 , Figure 5 and Figure 6As shown: before the four L-shaped prefabricated components 21 are respectively arranged at the four inside corners of the concrete frame structure 1, first, the positioning holes are opened on the concrete frame structure 1 (including the upper main beam 11, the lower main beam 12, the frame column 13 and the floor slab 14) at the positions corresponding to each first reserved hole 22, and the hole dust is cleaned. Then, the four L-shaped prefabricated components 21 are respectively arranged at the four inside corners by aligning with the corresponding positioning holes. When the four first connecting components are respectively used to fix the four L-shaped prefabricated components 21 to the concrete frame structure 1, the anchor bars 51 are respectively penetrated into the corresponding first reserved holes 22, and the adhesive is placed, so that the anchor bars 51 are anchored into the corresponding positioning holes and are fixed and bonded with the corresponding first reserved holes 22, thereby realizing the fixation of the L-shaped prefabricated components 21 to the concrete frame structure 1.

[0048] Step S2: using four second connecting components to respectively fix and connect each adjacent two L-shaped prefabricated components 21 together.

[0049] For the second connecting component using the lap plate, the lap bolt and the grouting material 41, as shown: Figures 5-8 As shown: when the second connecting component is used to fix and connect the adjacent two L-shaped prefabricated components 21 together, first, the lap plate is arranged between the adjacent two extended sections 213 of the adjacent two L-shaped light steels 211, and for the L-shaped prefabricated component 21 with H-shaped cross section and the lap plate structure including the web connecting plate 42 and the flange connecting plate 43, the web connecting plate 42 is respectively arranged between the corresponding webs and the corresponding flanges of the L-shaped light steel 211. Then, the lap plate and the adjacent two extended sections 213 are fixed and connected by the lap bolt, that is, the web connecting plate 42 and the flange connecting plate 43 are respectively fixed by the first bolt 44 and the second bolt 45. Finally, the splicing joint between the adjacent L-shaped prefabricated components 21 is supported and molded, and the grouting material 41 (such as high-strength mortar) is grouted, so that the grouting material 41 wraps the lap plate and the two extended sections 213, and is fixed between the adjacent recycled concrete 212, and preferably, after the maintenance and molding of the post-poured part, the surface is flush with the adjacent recycled concrete 212, as shown in Figure 1

[0050] ​It needs to be explained that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the defined conditions that the present application can be implemented, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that the present application can produce, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" and the like in the present specification are only for the convenience of clear description, and are not used to limit the scope of the present application, the change or adjustment of the relative relationship, without substantially changing the technical content, is also regarded as the scope of the present application.

[0051] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the technical solution of the present application, and any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present application, without departing from the content of the technical solution of the present application, still falls within the scope of the technical solution of the present application.

Claims

1. A fabricated light steel - steel fiber recycled concrete composite reinforced structure for reinforcing an existing concrete frame structure, characterized in that, The reinforcement structure includes: Four L-shaped precast members, which can be spliced along the inner circumference of the concrete frame structure to form a "mouth" shape. The L-shaped precast member includes an L-shaped light steel and recycled concrete poured outside the L-shaped light steel to wrap the L-shaped light steel. Steel fibers for replacing the steel reinforcement cage are mixed in the recycled concrete; Four first connecting members for respectively fixing the four L-shaped precast members to the concrete frame structure; Four second connecting members for respectively fixedly connecting every two adjacent L-shaped precast members together; wherein, Two end portions of the L-shaped light steel respectively extend out of the recycled concrete and form two extension segments; the second connecting member includes a lapping plate for lapping between two adjacent extension segments of two adjacent L-shaped light steels, lapping bolts for fixedly connecting the lapping plate with the two adjacent extension segments, and grouting material for pouring between adjacent recycled concretes to wrap the lapping plate and the two extension segments; The cross-section of the L-shaped light steel is in an H shape; second reserved holes are formed at positions corresponding to the extension segments on the web of the L-shaped light steel; the lapping plate includes a web connecting plate, and two end portions of the web connecting plate are respectively fixedly connected with the second reserved holes at two adjacent extension segments through the lapping bolts; At least one flange plate of the L-shaped light steel is provided with third reserved holes at positions corresponding to the extension segments; the lapping plate further includes at least one flange plate connecting plate, and two end portions of the flange plate connecting plate are respectively fixedly connected with the third reserved holes at two adjacent extension segments through the lapping bolts.

2. The fabricated light steel - steel fiber recycled concrete combined reinforcement structure according to claim 1, characterized in that, The first connecting member includes at least two anchor bars. At least one first reserved hole is respectively arranged on the horizontal section and the vertical section of the L-shaped precast member. Positioning holes are formed at positions corresponding to each first reserved hole on the concrete frame structure. The number of the anchor bars is the same as that of the first reserved holes, and the anchor bars penetrate through the first reserved holes one by one and are anchored into the corresponding positioning holes to fix the L-shaped precast member to the concrete frame structure.

3. The fabricated light steel - steel fiber recycled concrete combined reinforcement structure according to claim 2, characterized in that, The anchor bar and the corresponding first reserved hole are fixedly bonded through an adhesive.

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

5. A fabricated light steel - steel fiber recycled concrete combined reinforcement method, characterized in that, When the assembled light steel-steel fiber recycled concrete composite reinforcement structure as claimed in claim 1 is used to reinforce an existing concrete frame structure, the reinforcement method includes the following steps: S1: Respectively arrange the four L-shaped precast members at four inner corners of the concrete frame structure, and simultaneously use the four first connecting members to respectively fix the four L-shaped precast members to the concrete frame structure; S2: each two adjacent L-shaped prefabricated components are fixed and connected together by four second connecting components respectively.

6. The fabricated light steel - steel fiber recycled concrete combined reinforcement method according to claim 5, characterized in that: The first connecting component comprises at least two anchor bars, and the horizontal section and the vertical section of the L-shaped prefabricated component are respectively provided with at least one first reserved hole, and the number of the anchor bars is the same as the number of the first reserved holes; Before four L-shaped prefabricated components are arranged at four inside corners of the concrete frame structure respectively, a positioning hole is opened on the concrete frame structure at a position corresponding to each first reserved hole; When the four L-shaped prefabricated components are fixed to the concrete frame structure by four first connecting components respectively, the anchor bars are correspondingly penetrated through the first reserved holes and anchored into the corresponding positioning holes, so as to fix the L-shaped prefabricated components to the concrete frame structure.

7. The fabricated light steel - steel fiber recycled concrete combined reinforcement method according to claim 5, characterized in that: When two adjacent L-shaped prefabricated components are fixed and connected together by the second connecting component, a lap plate is first arranged between two adjacent extension sections of the two adjacent L-shaped light steels, then the lap plate and the two adjacent extension sections are fixed and connected by a lap bolt, and finally grouting material is injected between the adjacent steel fiber reinforced recycled concretes, and the grouting material wraps the lap plate and the two extension sections.

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