FRP rib-seawater and sea sand alkali-activated concrete beam component and construction method

Abstract

The invention discloses an FRP bar-seawater sea sand alkali-activated concrete beam member and a construction method, and relates to the technical field of concrete members, the FRP bar-seawater sea sand alkali-activated concrete beam member comprises a beam body, the beam body comprises a main bar and a stirrup which are installed inside the beam body through a fixing assembly, and a positioning assembly assembled inside the fixing assembly; a sliding groove and a filling opening are formed in the fixing frame, a pushing block is slidably connected to the inner wall of the sliding groove, a plurality of first mounting blocks are fixedly connected to the top of the pushing block, a first fixing column is connected between the inner walls of the first mounting blocks, and a first supporting plate is rotatably connected to the periphery of the first fixing column; and a plurality of second mounting blocks are fixedly connected to the periphery of the fixing frame, second fixing columns are fixedly connected to the inner walls of the second mounting blocks, second supporting plates are rotationally connected to the peripheries of the second fixing columns, and when the second supporting plates are horizontal to the sliding grooves, the main reinforcements make contact with the stirrups, so that rapid fixing is achieved, and the construction efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete components, and in particular to an FRP bar-seawater-sand-alkali-activated concrete beam component and a construction method. Background Art

[0002] In recent years, the service environment of reinforced concrete structures or steel-concrete composite structures in coastal hot and humid areas has been harsh. They are not only subject to marine environmental factors such as temperature, humidity changes, and chloride ion erosion, but also may be subjected to wind loads, wave loads, ship berthing loads, and vehicle loads. The coupling of these environments and loads has led to problems such as concrete cracking, protective layer peeling, and steel or steel corrosion in reinforced concrete structures and steel-concrete composite structures during the design service life.

[0003] In response to the above problems, based on the advantages of fiber reinforced composite materials (FRP) such as light weight, high strength, convenient construction and corrosion resistance, FRP bars are used to replace steel bars, and seawater and sea sand are used as raw materials to obtain local materials, overcoming the serious corrosive effects of traditional seawater and sea sand combined with ordinary steel bars. The strength of seawater and sea sand concrete is stimulated by alkali activators to improve the mechanical properties and durability of concrete. Seawater and sea sand alkali-activated concrete can better resist or transform the erosion of chloride ions, thereby improving the durability of concrete.

[0004] However, in the prior art, when making FRP reinforcement cages inside concrete, it is necessary to manually position the FRP reinforcements to ensure that the spacing between adjacent FRP reinforcements is the same. After determining the position of the FRP reinforcements, the hoop and the FRP reinforcements must be fixed with wire before subsequent installation can be performed, resulting in low installation efficiency. Secondly, the method of tying the FRP reinforcements with wires will cause the FRP reinforcement cage to be subjected to external forces, causing the wires to be squeezed into the FRP reinforcements, further causing damage to the FRP reinforcements and the problem of long-lasting use. Especially for the unmanned factory producing standard components at the assembly stage, it is cumbersome to perform standard assembly and positioning by robot arms at the construction site. There is a lack of a process-based construction method for FRP reinforcement-seawater and sea sand concrete beam components, which seriously reduces efficiency and safety, and hinders the intelligent construction and assembly rate of new beam components. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that in the prior art, when making FRP reinforcement cage inside concrete, the FRP reinforcement needs to be placed manually to ensure that the spacing between adjacent FRP reinforcements is the same. After the position of the FRP reinforcement is determined, the hoop and the FRP reinforcement are fixed by wire before subsequent installation can be carried out, resulting in low installation efficiency. Secondly, the method of tying the FRP reinforcement by wire will cause the wire to be squeezed into the FRP reinforcement when the FRP reinforcement cage is subjected to external force again, further causing the FRP reinforcement to be damaged and the problem of long-lasting use. Especially for the unmanned factory producing standard components in the assembly construction stage, the standard assembly positioning by robot arms at the construction site is cumbersome, and there is a lack of a process-based construction method for FRP reinforcement-seawater and sea sand concrete beam components, which seriously reduces efficiency and safety and hinders the intelligent construction assembly rate of new beam components. The proposed solution

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a FRP bar-seawater sand alkali activated concrete beam component and a construction method: comprising a beam body, the beam body comprising main bars and stirrups installed inside by a fixing assembly, the main bars and stirrups are poured with seawater sand alkali activated concrete outside, and also comprising: a positioning assembly and a clamping assembly assembled inside the fixing assembly;

[0007] The fixing assembly comprises a fixing frame, a slide groove and a plurality of slide grooves and a filling port are provided inside the fixing frame, a pushing block is slidably connected to the inner wall of the slide groove, and a plurality of first mounting blocks are fixedly connected to the top of the pushing block, a first fixing column is connected between the inner walls of the first mounting blocks, and the outer periphery of the first fixing column is rotatably connected to the first supporting plate, a plurality of second mounting blocks are fixedly connected to the outer periphery of the fixing frame, a second fixing column is fixedly connected to the inner wall of the second mounting block, and the outer periphery of the second fixing column is rotatably connected to the second supporting plate, the second supporting plate is connected to the first supporting plate through an abutting plate, and one side of the abutting plate abuts against the pushing block;

[0008] The positioning assembly includes fixed openings on both sides of the sliding groove, and inner cavities are provided on both sides of the abutment plates, and the inner wall of the inner cavity is slidably connected with a positioning piece in contact with the fixed opening;

[0009] As the pushing block pushes, the first support plate pushes the abutment plate and the second support plate to move upward synchronously, so that the main reinforcement contacts the stirrups as the abutment plate pushes, and is fixed under the action of the positioning member.

[0010] As a further description of the above technical solution:

[0011] A plurality of third mounting blocks are installed on the outer periphery of the fixing frame, a third fixing column is fixedly connected to the inner wall of the third mounting block, the third fixing column is connected to the abutment plate through a third supporting plate, and an avoidance groove is provided inside the abutment plate to avoid the rotation of the third supporting plate.

[0012] As a further description of the above technical solution:

[0013] The positioning member comprises a fixing rod slidably connected to the inner cavity, a telescopic spring is connected between one side of the fixing rod and the inner cavity, and the telescopic spring slides into the fixing opening through the chamfer opened at the bottom of the sliding groove.

[0014] As a further description of the above technical solution:

[0015] The clamping assembly includes a plurality of arc grooves opened inside the fixing frame and an embedded groove connected to the arc groove. The inner wall of the arc groove is slidably connected with an arc rod, and an arc spring is connected between the arc rod and the arc groove. An embedded plate is installed on the side of the arc rod away from the arc spring.

[0016] As a further description of the above technical solution:

[0017] One side of the inner panel is provided with an oblique angle, which abuts against the main reinforcement.

[0018] As a further description of the above technical solution:

[0019] A plurality of telescopic holes are provided inside the inner panel, and a tightening column is slidably connected to the inner wall of the telescopic hole, and a connecting spring is installed between one side of the tightening column and the telescopic hole.

[0020] As a further description of the above technical solution:

[0021] A clamping assembly is installed inside the fixed frame, and the clamping assembly includes a plurality of slots opened inside the fixed frame, a movable slot connected to the slot is opened on the top of the fixed frame, a limiting slot is opened on the inner wall of the slot, a transmission member is installed inside the slot, a pushing member is slidably connected to the inner wall of the limiting slot, a moving block is slidably connected to the inner wall of the moving slot, a moving slot extends from the top of the moving block and is connected to a clamping plate, and one side of the moving block is connected to a second gear plate meshing with the transmission member.

[0022] As a further description of the above technical solution:

[0023] The transmission member comprises a positioning column fixedly mounted on the inner wall of the slot, and the outer periphery of the positioning column is rotatably connected with a rotating gear.

[0024] As a further description of the above technical solution:

[0025] The pusher comprises a limit block slidably connected inside the limit groove, a first gear plate meshing with the rotating gear is fixedly connected to one side of the limit block, and the first gear plate is in contact with the main rib.

[0026] As a further description of the above technical solution:

[0027] A construction method of an FRP bar-seawater-sand-alkali-activated concrete beam component comprises the following steps:

[0028] S01. The moving push block slides in the slide groove, driving the first mounting block to push the first support plate and the abutment plate to move. As the abutment plate moves, the second support plate rotates and rises with the second fixed column as the center, and at the same time pushes the third support plate to rotate with the third fixed column. The abutment plate pushes the main reinforcement to gradually approach the stirrup in the slide groove until the second support plate is level with the slide groove, thereby achieving rapid contact and fixation.

[0029] S02, when the second support plate is about to be horizontal, the fixing rod contacts the chamfer and slides along the inner cavity to compress the telescopic spring, and then pops out into the fixing port under the action of the rebound force;

[0030] S03, when the main reinforcement moves, it contacts the bevel of the inner panel, causing the inner panel to open and push the arc rod to slide in the arc groove to compress the arc spring. When the main reinforcement is in place, the inner panel tightly clamps the main reinforcement under the action of the arc spring;

[0031] S04, the main reinforcement moves closer and pushes the first gear plate to slide, driving the rotating gear to rotate on the outer periphery of the positioning column, and then driving the second gear plate and the abutting plate to move toward the stirrup, so as to achieve relative fixation of the stirrup and the main reinforcement;

[0032] S05. Place the installed FRP reinforcement cage into the seawater and sea sand alkali activated concrete mold, then pour the alkali activated seawater and sea sand concrete prepared by mixing artificial seawater, sea sand, coral coarse aggregate, ordinary limestone aggregate and slag-based mixed with 15% fly ash and 5% silica fume into the mold, wait for the concrete to solidify and form, and then take out the beam body.

[0033] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0034] In the process of fixing and connecting the main reinforcement and the stirrup, by moving the push block, it can slide smoothly in the slide groove and drive the first mounting block and the first support plate on the first fixing column, thereby pushing the abutment plate to move. With the movement of the abutment plate, the second support plate and the third support plate respectively rotate and rise with the second fixing column and the third fixing column as the center of the circle, pushing the main reinforcement in the sliding groove to approach the stirrup. When the second support plate is level with the sliding groove, the main reinforcement contacts the stirrup, realizing rapid fixation and greatly improving the installation efficiency.

[0035] In addition, the fixed abutment of the abutment plate can effectively prevent the main reinforcement from bending when subjected to external force, reduce the risk of breakage, and ensure stable and safe connection. When the second support plate is about to be horizontal, the fixing rod slides along the inner cavity and compresses the telescopic spring, and then pops out and firmly enters the fixing port under the action of the spring rebound force, further ensuring that the main reinforcement and the stirrups are not separated, thereby enhancing the structural stability.

[0036] At the same time, when the main reinforcement moves, it contacts the bevel of the inner panel, causing the inner panel to open and push the arc rod to slide in the arc groove, compressing the arc spring. When the main reinforcement is in place, the inner panel tightly clamps the main reinforcement under the action of spring rebound to prevent displacement. The threaded groove on the outer periphery of the main reinforcement will also push the clamping column to move in the telescopic hole and compress the connecting spring. Finally, the clamping column adaptively abuts in the threaded groove, increasing friction and ensuring a stable and reliable structure.

[0037] Finally, when the main reinforcement moves, it will also push the first gear plate to rotate, driving the rotating gear to rotate around the outer periphery of the positioning column, and then driving the second gear plate and the clamping plate to move toward the stirrups, thereby achieving relative fixation of the stirrups and the main reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Shows a schematic diagram of the overall structure according to the present invention;

[0039] Figure 2 It shows a schematic diagram of the structure of the fixing assembly according to the present invention;

[0040] Figure 3 It is shown that according to the present invention Figure 2 Another perspective structural diagram;

[0041] Figure 4 A schematic diagram of the structure of the fixing frame according to the present invention is shown;

[0042] Figure 5 It shows a schematic diagram of the structure of a first mounting block according to the present invention;

[0043] Figure 6 A schematic diagram of the abutment plate structure according to the present invention is shown;

[0044] Figure 7 A schematic cross-sectional view of a fixing frame according to the present invention is shown;

[0045] Figure 8 A schematic diagram of the arc groove structure according to the present invention is shown;

[0046] Fig. 9 A schematic diagram of the structure of the clamping assembly according to the present invention is shown;

[0047] Fig.10 A front cross-sectional schematic diagram of a fixing frame according to the present invention is shown;

[0048] Fig.11 It is shown that according to the present invention Fig.10 A partial enlarged view of point A in the middle.

[0049] Legend:

[0050] 10. Beam body; 11. Main reinforcement; 12. Stirrups; 13. Seawater and sea sand alkali activated concrete;

[0051] 20. Fixing assembly; 21. Fixing frame; 211. Slide slot; 212. Sliding slot; 213. Filling port; 22. Pushing block; 23. First mounting block; 231. First fixing column; 232. First support plate; 24. Second mounting block; 241. Second fixing column; 242. Second support plate; 25. Third mounting block; 251. Third fixing column; 252. Third support plate; 26. Abutment plate; 261. Avoidance groove;

[0052] 30. Positioning assembly; 31. Chamfer; 32. Fixing opening; 33. Inner cavity; 331. Fixing rod; 332. Telescopic spring;

[0053] 40. Clamping assembly; 41. Arc groove; 411. In-line groove; 42. Arc rod; 43. Arc spring; 44. In-line plate; 441. Bevel; 442. Telescopic hole; 443. Clamping column; 444. Connecting spring;

[0054] 50. Clamping assembly; 51. Slot; 511. Moving slot; 512. Limiting slot; 52. Positioning column; 53. Rotating gear; 54. First gear plate; 541. Limiting block; 55. Second gear plate; 551. Moving block; 552. Clamping plate. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] like Figure 1-Figure 11As shown, the present invention provides an FRP bar-seawater sea sand alkali activated concrete beam component: comprising a beam body 10, the beam body 10 comprises a main bar 11 and a stirrup 12 installed inside by a fixing assembly 20, the main bar 11 and the stirrup 12 are poured with seawater sea sand alkali activated concrete 13 outside, the fixing assembly 20 comprises a fixing frame 21, the fixing frame 21 is provided with a slide groove 211 and a plurality of slide grooves 212 and a filling port 213 inside, the inner wall of the slide groove 211 is slidably connected with a push block 22, and the top of the push block 22 is fixedly connected with a plurality of first mounting blocks 23, the inner walls of the first mounting blocks 23 are connected with first fixing columns 231, and the outer periphery of the first fixing columns 231 is rotatably connected with a first A support plate 232, a plurality of second mounting blocks 24 are fixedly connected to the outer periphery of the fixing frame 21, a second fixing column 241 is fixedly connected to the inner wall of the second mounting block 24, a second supporting plate 242 is rotatably connected to the outer periphery of the second fixing column 241, the second supporting plate 242 is connected to the first supporting plate 232 via an abutting plate 26, and one side of the abutting plate 26 abuts against the pushing block 22, a plurality of third mounting blocks 25 are installed on the outer periphery of the fixing frame 21, a third fixing column 251 is fixedly connected to the inner wall of the third mounting block 25, the third fixing column 251 is connected to the abutting plate 26 via a third supporting plate 252, and an avoidance groove 261 is provided inside the abutting plate 26 to avoid the rotation of the third supporting plate 252;

[0057] When the main reinforcement 11 and the stirrup 12 need to be fixedly connected, this can be achieved by moving the pushing block 22. The pushing block 22 slides smoothly in the sliding groove 211. At the same time, it drives the first mounting block 23 connected thereto to move synchronously. The first mounting block 23 pushes the first supporting plate 232 through the first fixing column 231 thereon, thereby driving the abutting plate 26 to move. As the abutting plate 26 moves, the second supporting plate 242 will rotate and gradually rise with the second fixing column 241 as the center of the circle. At the same time, the abutting plate 26 will also push the third supporting plate 252 to move, so that it rotates with the third fixing column 251 as the center of the circle. In this series of actions, the abutting plate 26 will push the main reinforcement 11 to move in the sliding groove 212, so that it gradually approaches the stirrup 12. When the second supporting plate 242 and the sliding groove 212 are in a horizontal state, the main reinforcement 11 and the stirrup 12 are in contact, thereby achieving the purpose of quickly and conveniently contacting and fixing a plurality of main reinforcements 11 with the stirrup 12, thereby greatly improving the installation efficiency.

[0058] In addition, when the main reinforcement 11 and the stirrups 12 are subjected to external force, the fixed abutment of the abutment plate 26 can effectively prevent the main reinforcement 11 from bending, thereby reducing the risk of the main reinforcement 11 breaking after being subjected to external force, and ensuring the stability and safety of the connection.

[0059] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 As shown, the positioning assembly 30 and the clamping assembly 40 are assembled inside the fixing frame 21, the positioning assembly 30 includes a fixing opening 32 opened on both sides of the sliding groove 212, and inner cavities 33 are opened on both sides of the abutting plates 26, and the inner wall of the inner cavity 33 is slidably connected with a positioning member in contact with the fixing opening 32, and the positioning member includes a fixing rod 331 slidably connected inside the inner cavity 33, and a telescopic spring 332 is connected between one side of the fixing rod 331 and the inner cavity 33, and the telescopic spring 332 slides into the fixing opening 32 through the chamfer 31 opened at the bottom of the sliding groove 212;

[0060] When the second support plate 242 gradually moves to be in a horizontal state with the sliding groove 212, the fixing rods 331 on both sides of the abutment plate 26 will also move accordingly and eventually come into contact with the chamfer 31. Once the fixing rods 331 come into contact with the chamfer 31, they will slide smoothly along the inside of the inner cavity 33 and compress the telescopic spring 332 in the process. When the second support plate 242 is completely in a horizontal state with the sliding groove 212, the fixing rod 331 in a contracted state will automatically pop out and firmly enter the fixing port 32 under the action of the rebound force of the telescopic spring 332. This action effectively realizes the contact and fixation between the main reinforcement 11 and the stirrup 12, thereby ensuring that they will not be disconnected, greatly enhancing the stability and safety of the structure.

[0061] like Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 As shown, the clamping assembly 40 includes a plurality of arc-shaped grooves 41 provided inside the fixing frame 21 and an embedded groove 411 connected to the arc-shaped groove 41, an arc-shaped rod 42 is slidably connected to the inner wall of the arc-shaped groove 41, and an arc-shaped spring 43 is connected between the arc-shaped rod 42 and the arc-shaped groove 41, an inner embedded plate 44 is installed on the side of the arc-shaped rod 42 away from the arc-shaped spring 43, an oblique angle 441 is provided on one side of the inner embedded plate 44, and the oblique angle 441 abuts against the main rib 11, a plurality of telescopic holes 442 are provided inside the inner embedded plate 44, and a clamping column 443 is slidably connected to the inner wall of the telescopic hole 442, and a connecting spring 444 is installed between one side of the clamping column 443 and the telescopic hole 442;

[0062] When the abutment plate 26 pushes the main rib 11 to move in the sliding groove 212, the main rib 11 will gradually contact the bevel 441 on one side of the inner plate 44. As the main rib 11 continues to move, this contact will cause the two inner plates 44 to gradually open and push the arc rod 42 to slide in the arc groove 41, thereby generating a compression effect on the arc spring 43. Once the main rib 11 contacts the stirrup 12 and reaches a predetermined position, the inner plate 44 will be in close contact with the main rib 11 under the rebound effect of the arc spring 43, so as to achieve effective clamping of the main rib 11, thereby preventing it from being displaced in subsequent operations.

[0063] At the same time, when the main reinforcement 11 enters the interior of the embedded plate 44, due to the threaded groove designed on its outer periphery, the main reinforcement 11 will further push the multiple clamping columns 443 to move in the telescopic hole 442 and compress the connecting spring 444. When the main reinforcement 11 is fully moved into place, the clamping columns 443 on both sides of the main reinforcement 11 will adaptively abut against the threaded groove of the main reinforcement 11 under the rebound action of the connecting spring 444. This design not only further enhances the effect of preventing the displacement of the main reinforcement 11, but also increases the friction between the clamping columns 443 and the main reinforcement 11, thereby ensuring the stability and reliability of the entire structure.

[0064] like Figure 1 , Figure 2 , Figure 7 , Fig.10 , Fig.11 As shown, a tightening assembly 50 is installed inside the fixing frame 21, and the tightening assembly 50 includes a plurality of slots 51 opened inside the fixing frame 21, a moving slot 511 connected to the slot 51 is opened on the top of the fixing frame 21, and a limiting slot 512 is opened on the inner wall of the slot 51, and a transmission member is installed inside the slot 51, and the transmission member includes a positioning column 52 fixedly installed on the inner wall of the slot 51, and the outer periphery of the positioning column 52 is rotatably connected to a rotating gear 53, and the inner wall of the limiting slot 512 is slidably connected to the inner wall of the slot 512. There is a pushing member, which includes a limiting block 541 slidably connected to the inside of the limiting groove 512, one side of the limiting block 541 is fixedly connected to a first gear plate 54 meshing with the rotating gear 53, and the first gear plate 54 is in contact with the main rib 11, the inner wall of the moving groove 511 is slidably connected to a moving block 551, the top of the moving block 551 extends out of the moving groove 511 and is connected to a clamping plate 552, and one side of the moving block 551 is connected to a second gear plate 55 meshing with the transmission member;

[0065] When the abutment plate 26 pushes the main reinforcement 11 to move in the sliding groove 212, the main reinforcement 11 will gradually approach the first gear plate 54 and finally contact it. As the main reinforcement 11 continues to move, it will further push the first gear plate 54, so that the first gear plate 54 drives the rotating gear 53 to rotate on the outer periphery of the positioning column 52. At the same time, the rotation of the rotating gear 53 will drive the second gear plate 55 to move in the direction of the main reinforcement 11. This movement process also simultaneously drives the clamping plate 552 connected to the moving block 551 to approach the stirrup 12, and finally the clamping plate 552 contacts the stirrup 12, thereby achieving a relatively fixed state between the stirrup 12 and the main reinforcement 11.

[0066] The present invention also discloses a construction method of a FRP bar-seawater and sea sand alkali activated concrete beam component, which specifically comprises the following steps:

[0067] S01. The push block 22 is moved to slide in the slide groove 211, driving the first mounting block 23 to push the first support plate 232 and the abutment plate 26 to move. As the abutment plate 26 moves, the second support plate 242 rotates and rises with the second fixed column 241 as the center, and at the same time pushes the third support plate 252 to rotate with the third fixed column 251. The abutment plate 26 pushes the main reinforcement 11 in the slide groove 212 to gradually approach the stirrup 12 until the second support plate 242 is level with the slide groove 212, thereby achieving rapid contact and fixation.

[0068] S02, when the second support plate 242 is about to be horizontal, the fixing rod 331 contacts the chamfer 31 and slides along the inner cavity 33 to compress the telescopic spring 332, and then pops out into the fixing port 32 under the action of the rebound force;

[0069] S03, when the main reinforcement 11 moves, it contacts the bevel 441 of the inner panel 44, causing the inner panel 44 to open and push the arc rod 42 to slide in the arc groove 41 to compress the arc spring 43. When the main reinforcement 11 is in place, the inner panel 44 tightly clamps the main reinforcement 11 under the action of the arc spring 43;

[0070] S04, the main reinforcement 11 moves closer and pushes the first gear plate 54 to slide, driving the rotating gear 53 to rotate around the outer periphery of the positioning column 52, and then driving the second gear plate 55 and the abutting plate 552 to move toward the stirrup 12, so as to achieve relative fixation between the stirrup 12 and the main reinforcement 11;

[0071] S05. Place the installed FRP reinforcement cage into the seawater-sand-alkali activated concrete mold, then pour the seawater-sand-alkali activated concrete 13 prepared by mixing artificial seawater, sea sand, coral coarse aggregate, ordinary limestone aggregate and a slag-based mixture with 15% fly ash and 5% silica fume into the mold, wait for the seawater-sand-alkali activated concrete 13 to solidify and take shape, and then take out the beam body 10.

[0072] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A FRP bar-seawater sand alkali activated concrete beam component, comprising a beam body (10), wherein the beam body (10) comprises main bars (11) and stirrups (12) installed inside through a fixing assembly (20), and seawater sand alkali activated concrete (13) is poured outside the main bars (11) and stirrups (12), characterized in that: Also includes: A positioning assembly (30) and a clamping assembly (40) assembled inside the fixing assembly (20); The fixing assembly (20) comprises a fixing frame (21), the fixing frame (21) is provided with a slide groove (211) and a plurality of slide grooves (212) and a filling port (213) inside, the inner wall of the slide groove (211) is slidably connected with a push block (22), and the top of the push block (22) is fixedly connected with a plurality of first mounting blocks (23), the inner walls of the first mounting blocks (23) are connected with a first fixing column (231), and the outer periphery of the first fixing column (231) is rotatably connected with a first supporting plate (232), the outer periphery of the fixing frame (21) is fixedly connected with a plurality of second mounting blocks (24), the inner wall of the second mounting block (24) is fixedly connected with a second fixing column (241), and the outer periphery of the second fixing column (241) is rotatably connected with a second supporting plate (242), the second supporting plate (242) is connected to the first supporting plate (232) via an abutting plate (26), and one side of the abutting plate (26) abuts against the pushing block (22); The positioning assembly (30) comprises a fixing opening (32) provided on both sides of the sliding groove (212), an inner cavity (33) is provided on both sides of the plurality of abutment plates (26), and a positioning piece contacting the fixing opening (32) is slidably connected to the inner wall of the inner cavity (33); As the push block (22) pushes, the first support plate (232) pushes the abutment plate (26) and the second support plate (242) to move upward synchronously, so that the main reinforcement (11) contacts the stirrup (12) as the abutment plate (26) pushes, and is fixed under the action of the positioning member.

2. The FRP bar-seawater-sand-alkali-activated concrete beam component according to claim 1, characterized in that: A plurality of third mounting blocks (25) are mounted on the outer periphery of the fixing frame (21); a third fixing column (251) is fixedly connected to the inner wall of the third mounting block (25); the third fixing column (251) is connected to the abutment plate (26) via a third support plate (252); and an avoidance groove (261) is provided inside the abutment plate (26) for avoiding the rotation of the third support plate (252).

3. The FRP bar-seawater-sand-alkali-activated concrete beam component according to claim 1, characterized in that: The positioning member comprises a fixing rod (331) slidably connected to the inner cavity (33), a telescopic spring (332) is connected between one side of the fixing rod (331) and the inner cavity (33), and the telescopic spring (332) slides into the fixing opening (32) through a chamfer (31) provided at the bottom of the sliding groove (212).

4. The FRP bar-seawater-sand-alkali-activated concrete beam component according to claim 1, characterized in that: The clamping assembly (40) comprises a plurality of arcuate grooves (41) provided inside the fixing frame (21) and an embedded groove (411) connected to the arcuate grooves (41); an arcuate rod (42) is slidably connected to the inner wall of the arcuate groove (41); an arcuate spring (43) is connected between the arcuate rod (42) and the arcuate groove (41); and an embedded plate (44) is installed on a side of the arcuate rod (42) away from the arcuate spring (43).

5. The FRP bar-seawater-sand-alkali-activated concrete beam component according to claim 4, characterized in that: One side of the inner panel (44) is provided with an oblique angle (441), and the oblique angle (441) abuts against the main reinforcement (11).

6. The FRP bar-seawater-sand-alkali-activated concrete beam component according to claim 4, characterized in that: A plurality of telescopic holes (442) are provided inside the inner panel (44), and a tightening column (443) is slidably connected to the inner wall of the telescopic hole (442), and a connecting spring (444) is installed between one side of the tightening column (443) and the telescopic hole (442).

7. The FRP bar-seawater-sand-alkali-activated concrete beam component according to claim 1, characterized in that: A clamping assembly (50) is installed inside the fixed frame (21), and the clamping assembly (50) includes a plurality of slots (51) provided inside the fixed frame (21); a moving slot (511) communicating with the slot (51) is provided on the top of the fixed frame (21); a limiting slot (512) is provided on the inner wall of the slot (51); a transmission member is installed inside the slot (51); a pushing member is slidably connected to the inner wall of the limiting slot (512); a moving block (551) is slidably connected to the inner wall of the moving slot (511); a top of the moving block (551) extends out of the moving slot (511) and is connected to a clamping plate (552); and one side of the moving block (551) is connected to a second gear plate (55) meshing with the transmission member.

8. The FRP bar-seawater-sand-alkali-activated concrete beam component according to claim 7, characterized in that: The transmission member comprises a positioning column (52) fixedly mounted on the inner wall of the slot (51), and the outer periphery of the positioning column (52) is rotatably connected to a rotating gear (53).

9. The FRP bar-seawater-sand-alkali-activated concrete beam component according to claim 7, characterized in that: The pusher comprises a limit block (541) slidably connected inside the limit groove (512), one side of the limit block (541) is fixedly connected with a first gear plate (54) meshing with the rotating gear (53), and the first gear plate (54) is in contact with the main rib (11).

10. A construction method of the FRP bar-seawater-sand-alkali-activated concrete beam member according to any one of claims 1 to 9, characterized in that: The following steps are involved: S01, by moving the push block (22) to slide in the slide groove (211), the first installation block (23) is driven to push the first support plate (232) and the abutment plate (26) to move, and as the abutment plate (26) moves, the second support plate (242) rotates and rises with the second fixed column (241) as the center of the circle, and at the same time pushes the third support plate (252) to rotate with the third fixed column (251), and the abutment plate (26) pushes the main reinforcement (11) in the slide groove (212) to gradually approach the stirrup (12), until the second support plate (242) is level with the slide groove (212), so as to achieve rapid contact and fixation; S02, when the second support plate (242) is about to be horizontal, the fixing rod (331) contacts the chamfer (31) and slides along the inner cavity (33) to compress the telescopic spring (332), and then pops out into the fixing port (32) under the action of the rebound force; S03, when the main reinforcement (11) moves, it contacts the bevel (441) of the inner plate (44), causing the inner plate (44) to open and push the arc rod (42) to slide in the arc groove (41) to compress the arc spring (43). When the main reinforcement (11) is in place, the inner plate (44) tightly clamps the main reinforcement (11) under the action of the arc spring (43); S04, the main reinforcement (11) moves closer and pushes the first gear plate (54) to slide, driving the rotating gear (53) to rotate on the periphery of the positioning column (52), thereby driving the second gear plate (55) and the abutting plate (552) to move toward the stirrup (12), thereby achieving relative fixation between the stirrup (12) and the main reinforcement (11); S05. Place the installed FRP reinforcement cage into a concrete mold, then pour seawater-sand-alkali activated concrete (13) prepared by mixing artificial seawater, sea sand, coral coarse aggregate, ordinary limestone aggregate and a slag-based mixture containing 15% fly ash and 5% silica fume into the mold, wait for the seawater-sand-alkali activated concrete (13) to solidify and form, and then take out the beam body (10).

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