A steel-concrete composite beam reinforcement structure

Abstract

The present invention belongs to the technical field of composite beams, and specifically relates to a steel-concrete composite beam reinforcement structure, comprising a concrete slab and a steel frame, wherein the concrete slab is prefabricated with a plurality of first pouring openings arranged equidistantly, the first pouring openings are in an open structure spreading outward from bottom to top, the concrete slab is prefabricated with a plurality of second pouring openings, a first steel cage is further arranged in the first pouring opening, the first steel cage is in a structure spreading outward from bottom to top, the steel frame comprises an upper plate, a lower plate and a first supporting plate, the upper plate is fixed with a rectangular frame, a plurality of second steel cages are welded to the rectangular frame, a third steel cage is further welded to the rectangular frame, the second steel cage matches the second pouring opening, the concrete slab, the rectangular frame and the upper plate are fixed together by a plurality of longitudinal fixing members; the present invention can effectively enhance the tightness of the connection between the concrete slab and the steel frame, and avoid separation and looseness between the concrete slab and the steel frame.

Description

Technical Field

[0001] The invention belongs to the technical field of composite beams, and in particular relates to a steel-concrete composite beam reinforcement structure. Background Art

[0002] A steel-concrete composite beam refers to a bridge structure formed by combining the physical and mechanical properties of steel and concrete materials, taking advantage of their strengths and making up for their weaknesses. It is generally connected by a concrete slab and a steel frame. Steel-concrete composite beams are suitable for bridge structures, floor structures or platform structures. In bridge construction, steel-concrete composite beams are mainly box-type composite beams, which are named because of their box-shaped cross-section.

[0003] When assembling box-shaped steel-concrete composite beams, the existing connection methods mostly use bolts, studs and other methods to connect and fix the upper and lower parts to maintain the tightness of the connection between the concrete slab and the steel frame. However, such a connection method cannot well guarantee the tightness of the connection between the concrete slab and the steel frame. For this reason, we propose a steel-concrete composite beam reinforcement structure, which can effectively enhance the tightness of the connection between the concrete slab and the steel frame and avoid separation and looseness between the concrete slab and the steel frame. Summary of the invention

[0004] The purpose of the present invention is to provide a steel-concrete composite beam reinforcement structure to solve the problems existing in the background technology.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A steel-concrete composite beam reinforcement structure, comprising a concrete slab and a steel frame, characterized in that: the concrete slab is arranged on the upper surface of the steel frame, a plurality of equidistantly arranged first pouring openings are prefabricated in the middle of the concrete slab along the length direction, the first pouring openings are in an open structure spreading outward from bottom to top, a plurality of second pouring openings are prefabricated on both sides of the concrete slab in the width direction, each of the second pouring openings is equidistantly arranged along the length direction of the concrete slab, a first steel cage is further arranged in each of the first pouring openings, the first steel cage is in a structure spreading outward from bottom to top;

[0007] The steel frame includes an upper plate, a lower plate and a first support plate, the number of the first support plates is two, the upper plate and the lower plate are welded and fixed on both sides in the width direction by two first support plates, a rectangular frame is also welded and fixed on the upper side of the upper plate, a plurality of second steel cages are welded on both sides in the width direction of the rectangular frame, a third steel cage is also welded on the inner side of the rectangular frame, and each of the second steel cages on the same side is matched with each of the second pouring ports on the same side;

[0008] The concrete slab, the rectangular frame and the upper plate are fixed together by a plurality of longitudinal fixing members.

[0009] Each of the longitudinal fixing members is divided into two groups and is located on both sides of the concrete slab in the width direction. The concrete slab, the rectangular frame and the upper plate are all provided with a plurality of longitudinal positioning holes on both sides in the width direction.

[0010] The longitudinal fixing member includes a longitudinal screw and two longitudinal fixing nuts threadedly connected to the upper and lower ends of the longitudinal screw. The longitudinal screw passes through the concrete slab, the rectangular frame and the upper plate from top to bottom in sequence, and the upper and lower ends of the longitudinal screw are clamped and fixed by the two longitudinal fixing nuts respectively.

[0011] Reinforcement ribs are arranged on both sides of the upper plate and the lower plate, and each of the longitudinal screws on both sides also penetrates downwardly through the reinforcement ribs on both sides. The reinforcement ribs on both sides are longitudinally fixed by each of the longitudinal fixing members, and a plurality of transverse fixing members are also arranged between the reinforcement ribs on both sides and the first support plates on both sides.

[0012] The reinforcing ribs on both sides and the first support plates on both sides are jointly provided with a plurality of transverse positioning holes, and the transverse fixing member includes a transverse screw and a plurality of transverse fixing nuts threadedly connected to the transverse screw, and the transverse screw passes through the reinforcing ribs and the first support plates in sequence, and the reinforcing ribs on the same side and the first support plates on the same side are clamped and fixed by the transverse fixing nuts.

[0013] A second support plate is also arranged between the two first support plates, and the upper and lower sides are respectively welded and fixed to the upper plate and the lower plate. The second support plate is provided with a plurality of the transverse positioning holes, and the transverse fixing nut also transversely penetrates the second support plate, and the two sides of the second support plate are clamped and fixed by the transverse fixing nuts.

[0014] A third pouring port is prefabricated between the first pouring port and the second pouring ports corresponding to the first pouring port on both sides. The third pouring ports on both sides are opened on the upper surface of the concrete slab. One side of the third pouring port corresponding to the second pouring port is processed into a first groove inclined downward in the direction of the second pouring port.

[0015] Positioning steel cages are also provided on both sides of the first steel cage, and the positioning steel cages are matched with the third pouring openings on both sides respectively. One end of the positioning steel cage close to the second pouring opening is bent downward and matched with the first groove.

[0016] A side of the third pouring port corresponding to the first pouring port is processed into a horizontal groove or a second groove inclined downward toward the first pouring port.

[0017] The present invention also provides a construction process for a steel-concrete composite beam reinforcement structure, the construction process comprising the following steps:

[0018] S100: Component production:

[0019] ① Prefabrication of concrete slabs:

[0020] Prefabricate the concrete slab using a prefabricated mold so that the concrete slab forms a first pouring port, a second pouring port, and a third pouring port;

[0021] ②Steel frame production:

[0022] The upper plate, the lower plate, the first support plate and the second support plate are welded in sequence, and the reinforcing ribs, the first support plate and the second support plate are fixed by various transverse fixing members, and then the rectangular frame is welded and fixed on the surface of the upper plate, and finally the second steel cage and the third steel cage are welded and fixed to the rectangular frame;

[0023] ③ Production of the first steel cage:

[0024] Welding a first steel cage according to shape requirements, and welding positioning steel cages on both sides of the first steel cage;

[0025] S200: Assembly:

[0026] ①Use the hoisting method to make the second pouring port of the concrete slab correspond to the second steel cage of the rectangular frame, and place the concrete slab on the surface of the rectangular frame;

[0027] ② Place the first steel cage into the first pouring opening so that the lower end of the first steel cage is inserted into the third steel cage. At the same time, the positioning steel cages on both sides of the first steel cage are placed into the third pouring openings on both sides so that the ends of the positioning steel cages are placed into the first groove;

[0028] S300: Casting:

[0029] ① First, pour concrete at each second pouring opening, with the pouring height being flush with the high side of the first groove. After pouring, vibrating, and leveling, the concrete at each second pouring opening solidifies and forms a first concrete reinforcement part;

[0030] ② Then pour concrete at each first pouring opening, with the pouring height being flush with the surface of the concrete slab; after pouring, vibrating, and leveling, the concrete at each first pouring opening is fixed and formed, forming a second concrete reinforcement part;

[0031] Through the connection between the first concrete reinforcement part and the second concrete reinforcement part, the concrete slab and the steel frame are tightly connected and not easy to loosen;

[0032] S400: Vertical fixation:

[0033] The concrete slab, rectangular frame, upper plate and reinforcing ribs are longitudinally fixed using longitudinal fixings to complete the assembly of the steel-concrete composite beam.

[0034] When pouring the reinforcement structure of the steel-concrete composite beam of the present invention, concrete is first poured into each second pouring opening, thereby forming a first concrete reinforcement part fixed with the second steel cage in the second pouring opening, thereby ensuring the positioning of the concrete slab assembled on the upper side of the steel frame, and then concrete is poured into each first pouring opening, thereby forming a second concrete reinforcement part fixed with the first steel cage and the third steel cage in the second pouring opening and the inner side of the rectangular frame. Since the first pouring opening is an open structure that spreads outward from bottom to top, and the concrete in the rectangular frame forms a strip plate, the second concrete reinforcement part can present an I-shaped structure, and then the tightness between the concrete slab and the steel frame is maintained by the formed I-shaped concrete structure. Finally, the concrete slab, the rectangular frame and the upper plate are fixed again by the longitudinal fixing parts, and the tightness between the concrete slab and the steel frame is ensured again. In this way, it can be effectively ensured that the steel-concrete composite beam is not prone to the problem of separation or loosening of the concrete slab and the steel frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0036] Figure 1 It is a schematic diagram of the explosion structure of the steel-concrete composite beam of the present invention;

[0037] Figure 2 for Figure 1 A schematic diagram of the structure at A;

[0038] Figure 3 for Figure 1 A schematic diagram of the structure at B;

[0039] Figure 4 It is a schematic diagram of the assembly structure of the steel-concrete composite beam of the present invention;

[0040] Figure 5 for Figure 4 A schematic diagram of the structure at position C of FIG.

[0041] Figure 6 The cross-sectional structure of the steel-concrete composite beam of the present invention in the assembled state is shown in FIG. Figure 1 ;

[0042] Figure 7 The cross-sectional structure of the steel-concrete composite beam of the present invention in the assembled state is shown in FIG. Figure 2 ;

[0043] Figure 8 The cross-sectional structure of the steel-concrete composite beam of the present invention during casting is shown in FIG. Figure 1 ;

[0044] Fig. 9 The cross-sectional structure of the steel-concrete composite beam of the present invention during casting is shown in FIG. Figure 2 ;

[0045] The main component symbols are described as follows:

[0046] Concrete slab 100, first pouring port 101, second pouring port 102, first steel cage 103, steel frame 110, upper plate 111, lower plate 112, first support plate 113, rectangular frame 114, second steel cage 115, third steel cage 116, longitudinal screw 120, longitudinal fixing nut 121, reinforcing rib 130, transverse screw 131, transverse fixing nut 132, second support plate 133, third pouring port 140, first groove 141, positioning steel cage 142, first concrete reinforcement part 200, second concrete reinforcement part 201. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0048] Embodiment 1, as Figures 1 to 9 A steel-concrete composite beam reinforcement structure shown includes a concrete slab 100 and a steel frame 110. The concrete slab 100 is arranged on the upper surface of the steel frame 110. A plurality of equally spaced first pouring openings 101 are prefabricated in the middle of the concrete slab 100 along the length direction. The first pouring openings 101 are open structures that spread outward from bottom to top. A plurality of second pouring openings 102 are prefabricated on both sides of the width direction of the concrete slab 100. Each second pouring opening 102 is equally spaced along the length direction of the concrete slab 100. A first steel cage 103 is also arranged in each first pouring opening 101. The first steel cage 103 is in a structure that spreads outward from bottom to top.

[0049] The steel frame 110 includes an upper plate 111, a lower plate 112 and a first support plate 113. There are two first support plates 113. The upper plate 111 and the lower plate 112 are welded and fixed on both sides in the width direction by two first support plates 113. A rectangular frame 114 is also welded and fixed on the upper side of the upper plate 111. A plurality of second steel cages 115 are welded on both sides in the width direction of the rectangular frame 114. A third steel cage 116 is also welded on the inner side of the rectangular frame 114. Each second steel cage 115 on the same side is matched with each second pouring port 102 on the same side.

[0050] The concrete slab 100 , the rectangular frame 114 and the upper plate 111 are fixed together by a plurality of longitudinal fixing members.

[0051] like Figures 1 to 9As shown, after the concrete slab 100 is assembled on the upper side of the steel frame 110, the second steel cage 115 is positioned in the second pouring opening 102 of the concrete slab 100, and at the same time, the first steel cage 103 is placed in the first pouring opening 101, so that the first steel cage 103 is inserted into the third steel cage 116 inside the rectangular frame 114;

[0052] During pouring, concrete is first poured into each second pouring opening 102, so that a first concrete reinforcement part 200 fixed integrally with the second steel cage 115 is formed in the second pouring opening 102, thereby ensuring the positioning of the concrete slab 100 assembled on the upper side of the steel frame 110, and then concrete is poured into each first pouring opening 101, so that a second concrete reinforcement part 201 fixed integrally with the first steel cage 103 and the third steel cage 116 is formed inside the second pouring opening 102 and the rectangular frame 114. The concrete in the rectangular frame is formed into a strip-shaped plate, so the second concrete reinforcement part 201 can present an I-shaped structure, and then the tightness between the concrete slab 100 and the steel frame 110 is maintained by the formed I-shaped concrete structure. Finally, the concrete slab 100, the rectangular frame 114 and the upper plate 111 are fixed again by longitudinal fixing parts, and the tightness between the concrete slab 100 and the steel frame 110 is ensured again. In this way, it can effectively ensure that the steel-concrete composite beam is not prone to separation or loosening of the concrete slab 100 and the steel frame 110.

[0053] As a further explanation of the longitudinal fixing member in this embodiment, Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, each longitudinal fixing member is divided into two groups and is located on both sides of the width direction of the concrete slab 100. The concrete slab 100, the rectangular frame 114 and the upper plate 111 are all provided with a plurality of longitudinal positioning holes on both sides of the width direction.

[0054] The longitudinal fixing member includes a longitudinal screw rod 120 and two longitudinal fixing nuts 121 threadedly connected to the upper and lower ends of the longitudinal screw rod 120. The longitudinal screw rod 120 passes through the concrete slab 100, the rectangular frame 114 and the upper plate 111 from top to bottom, and the upper and lower ends of the longitudinal screw rod 120 are clamped and fixed by the two longitudinal fixing nuts 121 respectively.

[0055] By passing the longitudinal screw 120 downward through the concrete slab 100, the rectangular frame 114 and the upper plate 111, and then clamping and fixing them through the longitudinal fixing nuts 121 at the upper and lower ends of the longitudinal screw 120, the longitudinal fixation between the concrete slab 100 and the steel frame 110 can be easily completed. The screw penetration fixing method is simple and convenient to operate and is suitable for the assembly and fixation of steel-concrete composite beams.

[0056] At the same time, as a further reinforcement fixation of the upper plate 111 and the lower plate 112 in this embodiment, Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, both sides of the upper plate 111 and the lower plate 112 are provided with reinforcing ribs 130, and each longitudinal screw rod 120 on both sides also penetrates downward through the reinforcing ribs 130 on both sides, and the reinforcing ribs 130 on both sides are longitudinally fixed by each longitudinal fixing member, and a plurality of transverse fixing members are also provided between the reinforcing ribs 130 on both sides and the first support plates 113 on both sides;

[0057] The reinforcing ribs 130 on both sides and the first support plates 113 on both sides are provided with a plurality of transverse positioning holes. The transverse fixing member includes a transverse screw 131 and a plurality of transverse fixing nuts 132 threadedly connected to the transverse screw 131. The transverse screw 131 sequentially penetrates the reinforcing rib 130 and the first support plate 113. The reinforcing rib 130 on the same side and the first support plate 113 on the same side are clamped and fixed by the transverse fixing nuts 132.

[0058] A second support plate 133 is also arranged between the two first support plates 113, and the upper and lower sides are respectively welded and fixed to the upper plate 111 and the lower plate 112. The second support plate 133 is provided with a plurality of transverse positioning holes, and the transverse fixing nuts 132 also transversely penetrate the second support plate 133, and the two sides of the second support plate 133 are clamped and fixed by the transverse fixing nuts 132.

[0059] When performing longitudinal fixation, the reinforcing ribs 130 on both sides can be longitudinally fixed by the longitudinal screws 120, and the transverse screws 131 penetrate the reinforcing ribs 130, the first support plate 113 and the second support plate 133, and the transverse fixing nuts 132 are used to fix the reinforcing ribs 130 and the first support plates 113, so that the fixing strength of the reinforcing ribs 130 is ensured, and the second support plate 133 is arranged between the two first support plates 113, so that auxiliary support can be provided between the upper plate 111 and the lower plate 112, and the two sides of the second support plate 133 are clamped by the transverse fixing nuts 132, so that the second support plate 133 can be kept stable, thereby ensuring the auxiliary support effect of the second support plate 133.

[0060] As a further improvement to the present embodiment, since the concrete slab 100 has a certain depth and the rectangular frame 114 also has a certain depth, in order to avoid the problem that the poured concrete easily causes the first steel cage 103 to float when pouring the first pouring port 101, the following improvements are made, such as Figure 2 and Figure 5As shown, third pouring openings 140 are prefabricated between the first pouring opening 101 and the corresponding second pouring openings 102 on both sides. The third pouring openings 140 on both sides are opened on the upper surface of the concrete slab 100, and one side of the third pouring opening 140 corresponding to the second pouring opening 102 is processed into a first groove 141 inclined downward toward the direction of the second pouring opening 102;

[0061] Positioning steel cages 142 are also provided on both sides of the first steel cage 103. The positioning steel cages 142 are matched with the third pouring openings 140 on both sides respectively. One end of the positioning steel cage 142 close to the second pouring opening 102 is bent downward and matched with the first groove 141.

[0062] A side of the third pouring port 140 corresponding to the first pouring port 101 is processed into a horizontal groove or a second groove inclined downward toward the first pouring port 101 .

[0063] When the first steel cage 103 is placed in the first pouring port 101, the first steel cage 103 can be positioned by positioning the steel cage 142 and the third pouring port 140, so as to facilitate the placement of the first steel cage 103. At the same time, the end of the positioning steel cage 142 will enter the first groove 141.

[0064] When pouring the second pouring port 102, the pouring height of the concrete is flush with the high side of the first groove 141, so as to prevent the concrete from entering the first pouring port 101 through the third pouring port 140. After the concrete in the second pouring port 102 is vibrated, smoothed and solidified, the end of the positioning steel cage 142 will be solidified with the first concrete reinforcement part 200, so that the first steel cage 103 can no longer float, and the positioning of the first steel cage 103 is completed. Then, concrete is poured into the first pouring port 101 in the aforementioned manner. Since the first steel cage 103 no longer floats, the second concrete reinforcement part 201 with an I-shaped structure can be stably formed, and the second concrete reinforcement part 201 can ensure the tightness of the connection between the concrete slab 100 and the steel frame 110.

[0065] And due to the setting of the first groove 141, the first concrete reinforcement part 200 can be L-shaped, which once again reinforces the connection tightness between the concrete slab 100 and the steel frame 110, thereby greatly enhancing the connection tightness between the concrete slab 100 and the steel frame 110 and avoiding the problem of separation or loosening of the concrete slab 100 and the steel frame 110.

[0066] Embodiment 2, based on Embodiment 1, provides a construction process for strengthening a steel-concrete composite beam structure, and the construction process comprises the following steps:

[0067] S100: Component production:

[0068] ① Prefabrication of concrete slab 100:

[0069] like Figure 1 As shown, the concrete slab 100 is prefabricated by a prefabricated mold, so that the concrete slab 100 is formed with a first pouring port 101, a second pouring port 102 and a third pouring port 140;

[0070] ② Steel frame 110 production:

[0071] like Figure 1 As shown, the upper plate 111, the lower plate 112, the first support plate 113 and the second support plate 133 are welded in sequence, and the reinforcing ribs 130, the first support plate 113 and the second support plate 133 are fixed by various transverse fixing members, and then the rectangular frame 114 is welded and fixed on the surface of the upper plate 111, and finally the second steel cage 115 and the third steel cage 116 are welded and fixed to the rectangular frame 114;

[0072] ③ Production of the first reinforcement cage 103:

[0073] like Figure 1 As shown, the first steel cage 103 is formed by welding according to the shape requirements, and the positioning steel cages 142 are welded on both sides of the first steel cage 103;

[0074] S200: Assembly:

[0075] ① Using a hoisting method, the second pouring opening 102 of the concrete slab 100 is aligned with the second steel cage 115 of the rectangular frame 114, and the concrete slab 100 is placed on the surface of the rectangular frame 114;

[0076] ② Place the first steel cage 103 into the first pouring port 101, so that the lower end of the first steel cage 103 is inserted into the third steel cage 116, and at the same time, the positioning steel cages 142 on both sides of the first steel cage 103 are placed into the third pouring ports 140 on both sides, so that the ends of the positioning steel cages 142 are placed into the first groove 141;

[0077] After the above steps are completed, the steel-concrete composite beam is Figure 4 and Figure 6 The status shown;

[0078] S300: Casting:

[0079] ① First, pour concrete at each second pouring opening 102, with the pouring height being flush with the high side of the first groove 141. After pouring, vibrating, and leveling, the concrete at each second pouring opening 102 solidifies and forms a first concrete reinforcement portion 200. Figure 8As shown, the end of the positioning steel cage 142 is fixed by the first concrete reinforcement part 200, so that the first steel cage 103 can no longer float, and the first groove 141 is used to form an L-shaped structure of the first concrete reinforcement part 200, which can ensure the tightness of the connection between the concrete slab 100 and the steel frame 110;

[0080] ② Then, the concrete of each first pouring opening 101 is poured, and the pouring height is flush with the surface of the concrete slab 100; after pouring, vibrating, and smoothing, the concrete of each first pouring opening 101 is fixed and formed to form the second concrete reinforcement part 201; at this time, Fig. 9 As shown, the second concrete reinforcement part 201 forms an I-shaped structure, so that the second concrete reinforcement part 201 can further ensure the tightness of the connection between the concrete slab 100 and the steel frame 110;

[0081] Through the connection between the first concrete reinforcement part 200 and the second concrete reinforcement part 201, the concrete slab 100 and the steel frame 110 are tightly connected and are not easy to loosen;

[0082] S400: Vertical fixation:

[0083] The concrete slab 100, the rectangular frame 114, the upper plate 111 and the reinforcing ribs 130 are longitudinally fixed using longitudinal fixings, once again ensuring the tightness of the connection between the concrete slab 100 and the steel frame 110, thereby completing the assembly of the steel-concrete composite beam.

[0084] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A steel-concrete composite beam reinforcement structure, comprising a concrete slab and a steel frame, characterized in that: The concrete slab is arranged on the upper surface of the steel frame, and a plurality of first pouring openings are prefabricated in the middle of the concrete slab along the length direction, and the first pouring openings are in an open structure that spreads outward from bottom to top. The concrete slab is prefabricated with a plurality of second pouring openings on both sides in the width direction, and each of the second pouring openings is arranged equidistantly along the length direction of the concrete slab. A first steel cage is also arranged in each of the first pouring openings, and the first steel cage is in a structure that spreads outward from bottom to top. The steel frame includes an upper plate, a lower plate and a first support plate, the number of the first support plates is two, the upper plate and the lower plate are welded and fixed on both sides in the width direction by two first support plates, a rectangular frame is also welded and fixed on the upper side of the upper plate, a plurality of second steel cages are welded on both sides in the width direction of the rectangular frame, a third steel cage is also welded on the inner side of the rectangular frame, and each of the second steel cages on the same side is matched with each of the second pouring ports on the same side; The concrete slab, the rectangular frame and the upper plate are fixed together by a plurality of longitudinal fixing members.

2. A steel-concrete composite beam reinforcement structure according to claim 1, characterized in that: Each of the longitudinal fixing members is divided into two groups and is located on both sides of the concrete slab in the width direction. The concrete slab, the rectangular frame and the upper plate are all provided with a plurality of longitudinal positioning holes on both sides in the width direction. The longitudinal fixing member includes a longitudinal screw and two longitudinal fixing nuts threadedly connected to the upper and lower ends of the longitudinal screw. The longitudinal screw passes through the concrete slab, the rectangular frame and the upper plate from top to bottom in sequence, and the upper and lower ends of the longitudinal screw are clamped and fixed by the two longitudinal fixing nuts respectively.

3. A steel-concrete composite beam reinforcement structure according to claim 2, characterized in that: Reinforcement ribs are arranged on both sides of the upper plate and the lower plate, and each of the longitudinal screws on both sides also penetrates downwardly through the reinforcement ribs on both sides. The reinforcement ribs on both sides are longitudinally fixed by each of the longitudinal fixing members, and a plurality of transverse fixing members are also arranged between the reinforcement ribs on both sides and the first support plates on both sides.

4. The steel-concrete composite beam reinforcement structure according to claim 3 is characterized in that: The reinforcing ribs on both sides and the first support plates on both sides are jointly provided with a plurality of transverse positioning holes, and the transverse fixing member includes a transverse screw and a plurality of transverse fixing nuts threadedly connected to the transverse screw, and the transverse screw passes through the reinforcing ribs and the first support plates in sequence, and the reinforcing ribs on the same side and the first support plates on the same side are clamped and fixed by the transverse fixing nuts.

5. The steel-concrete composite beam reinforcement structure according to claim 4, characterized in that: A second support plate is also arranged between the two first support plates, and the upper and lower sides are respectively welded and fixed to the upper plate and the lower plate. The second support plate is provided with a plurality of the transverse positioning holes, and the transverse fixing nut also transversely penetrates the second support plate, and the two sides of the second support plate are clamped and fixed by the transverse fixing nuts.

6. The steel-concrete composite beam reinforcement structure according to claim 5, characterized in that: A third pouring port is prefabricated between the first pouring port and the second pouring ports corresponding to the first pouring port on both sides. The third pouring ports on both sides are opened on the upper surface of the concrete slab. One side of the third pouring port corresponding to the second pouring port is processed into a first groove inclined downward in the direction of the second pouring port. Positioning steel cages are also provided on both sides of the first steel cage, and the positioning steel cages are matched with the third pouring openings on both sides respectively. One end of the positioning steel cage close to the second pouring opening is bent downward and matched with the first groove.

7. The steel-concrete composite beam reinforcement structure according to claim 6, characterized in that: A side of the third pouring port corresponding to the first pouring port is processed into a horizontal groove or a second groove inclined downward toward the first pouring port.

8. The steel-concrete composite beam reinforcement structure according to claim 6, characterized in that: Also included is a construction process for a steel-concrete composite beam reinforcement structure, the construction process comprising the following steps: S100: Component production: ① Prefabrication of concrete slabs: Prefabricate the concrete slab using a prefabricated mold so that the concrete slab forms a first pouring port, a second pouring port, and a third pouring port; ②Steel frame production: The upper plate, the lower plate, the first support plate and the second support plate are welded in sequence, and the reinforcing ribs, the first support plate and the second support plate are fixed by various transverse fixing members, and then the rectangular frame is welded and fixed on the surface of the upper plate, and finally the second steel cage and the third steel cage are welded and fixed to the rectangular frame; ③ Production of the first steel cage: Welding a first steel cage according to shape requirements, and welding positioning steel cages on both sides of the first steel cage; S200: Assembly: ①Use the hoisting method to make the second pouring port of the concrete slab correspond to the second steel cage of the rectangular frame, and place the concrete slab on the surface of the rectangular frame; ② Place the first steel cage into the first pouring opening so that the lower end of the first steel cage is inserted into the third steel cage. At the same time, the positioning steel cages on both sides of the first steel cage are placed into the third pouring openings on both sides so that the ends of the positioning steel cages are placed into the first groove; S300: Casting: ① First, pour concrete at each second pouring opening, with the pouring height being flush with the high side of the first groove. After pouring, vibrating, and leveling, the concrete at each second pouring opening solidifies and forms a first concrete reinforcement part; ② Then pour concrete at each first pouring opening, with the pouring height being flush with the surface of the concrete slab; after pouring, vibrating, and leveling, the concrete at each first pouring opening is fixed and formed, forming a second concrete reinforcement part; Through the connection between the first concrete reinforcement part and the second concrete reinforcement part, the concrete slab and the steel frame are tightly connected and not easy to loosen; S400: Vertical fixation: The concrete slab, rectangular frame, upper plate and reinforcing ribs are longitudinally fixed using longitudinal fixings to complete the assembly of the steel-concrete composite beam.

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