Connection structure of prefabricated pipe piles and prefabricated caps for bridges

Abstract

The present invention relates to the technical field of prefabricated structures, and specifically to a connection structure between a prefabricated pipe pile and a prefabricated cap of a bridge, including a cap body and a pipe pile body, and also including: two grouting holes and a plurality of reinforcement perforations uniformly arranged along the circumferential direction are formed on the cap body; a casting pipe is coaxially fixedly connected with the pipe pile body, and the upper end of the casting pipe is against the lower end of the cap body; a positioning mechanism is connected to the pipe pile body, including a positioning roller and a plurality of fastening mechanisms, the positioning roller is coaxially arranged with the pipe pile body, and the plurality of fastening mechanisms are arranged at equal angles along the circumferential direction at the upper end of the positioning roller, and the downward movement of the positioning roller can drive the plurality of fastening mechanisms to position the cap body. The present invention adopts a plurality of reinforcement rollers to realize the rapid connection between the cap body and the pipe pile body, and at the same time, the plurality of reinforcement rollers increase the bonding degree between the cap body and the post-cast concrete, which can effectively improve the stability between the cap body and the pipe pile body.

Description

Technical Field

[0001] The invention relates to the technical field of assembled structures, and in particular to a connection structure between a prefabricated pipe pile and a prefabricated cap of a bridge. Background Art

[0002] Pile cap foundation, as a key foundation structure in the field of modern construction, is essentially a deep foundation, and its core components include pile body and pile cap. This foundation form has been widely used in various engineering projects due to its unique bearing capacity and stability. However, in the existing pile foundation construction process, its steps and methods still have certain limitations.

[0003] When pouring the pile cap, the steel bars must be carefully tied to the pile body to ensure that the pile cap has sufficient bearing capacity and tensile strength. This process not only requires superb skills and precise operation, but also because the pile cap usually requires dense reinforcement, the entire construction process becomes extremely cumbersome and time-consuming. At the same time, due to the large pouring volume, the construction and maintenance cycle is also relatively long, which undoubtedly increases the construction cost and construction period pressure.

[0004] In addition, the density of the pile cap reinforcement also brings challenges to construction quality. During the pouring process, how to ensure that each steel bar can be accurately embedded in the predetermined position, how to control the fluidity and density of concrete, these are the key factors affecting the quality of the pile cap. If the construction quality control is not proper, it may cause cracks, deformation and other quality problems in the pile cap, which will affect the stability and safety of the entire foundation structure. Summary of the invention

[0005] Based on this, it is necessary to provide a connection structure between prefabricated pipe piles and prefabricated caps for bridges in response to existing technical problems.

[0006] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0007] The connection structure of the prefabricated pipe pile and the prefabricated cap of the bridge includes a cap body and a pipe pile body. The cap body is symmetrically formed with two grouting holes and a plurality of reinforcement through holes evenly arranged along the circumferential direction; and also includes:

[0008] The pouring pipe is coaxially connected to the pile body, and the upper end of the pouring pipe abuts against the lower end of the cap body;

[0009] The positioning mechanism is connected to the pipe pile body and includes a positioning roller and a plurality of fastening mechanisms. The positioning roller is coaxially arranged with the pipe pile body, and the plurality of fastening mechanisms are arranged at equal angles along the circumferential direction at the upper end of the positioning roller. The downward movement of the positioning roller can drive the plurality of fastening mechanisms to position the cap body.

[0010] The reinforcement mechanism is connected to the positioning roller shaft, and includes a plurality of reinforcement roller shafts and a plurality of reinforcement side plates. The plurality of reinforcement roller shafts are respectively coaxially arranged with a plurality of reinforcement perforations, and the plurality of reinforcement side plates are arranged at equal angles along the circumferential direction of the positioning roller shaft. A plurality of evenly arranged reinforcement cross bars are fixedly connected to the side of each reinforcement side plate away from the positioning roller shaft.

[0011] Furthermore, the positioning mechanism also includes two positioning pins. The upper end of the pipe pile body is symmetrically formed with two positioning grooves. The two positioning pins are symmetrically fixed to the lower end of the base body, and the two positioning pins correspond to the two positioning grooves respectively.

[0012] Furthermore, the positioning mechanism also includes a positioning baffle, a return spring and a positioning frame. The positioning baffle is fixedly connected to the upper coaxial line of the pipe pile body, the positioning roller is slidably connected to the coaxial line of the positioning baffle, the positioning frame is fixedly connected to the upper end of the positioning roller coaxially, the return spring is coaxially sleeved on the outside of the positioning roller, the upper end of the return spring is fixedly connected to the positioning frame, and the lower end is fixedly connected to the positioning baffle.

[0013] Furthermore, the positioning mechanism also includes a downward pressure ring, and the clamping mechanism also includes a bearing bracket, a bearing pin and a clamping rod. The bearing bracket is fixedly arranged on the upper part of the pipe pile body and is fixedly connected to the pipe pile body. The lower end of the clamping rod is hinged to the positioning frame. A limited position perforation is formed in the middle part of the clamping rod, and a bearing flange is formed at the upper end. The bearing pin is fixedly connected to the bearing bracket and is slidably connected to the limited position perforation. The downward pressure ring is coaxially arranged with the base body, and the bearing flange can be clamped with the upper end of the downward pressure ring after the clamping rod moves downward.

[0014] Furthermore, the positioning mechanism also includes a first slider, a second slider, a connecting rack, a connecting gear, a connecting support plate, a connecting spring and a limit baffle. The first slider is slidably connected to the base body in a vertical state, the upper end of the first slider is fixedly connected to the downward pressure ring, the second slider is slidably connected to the base body in a horizontal state, the second slider and the end close to the first slider are slidably connected to each other through an inclined surface, the connecting rack is fixedly connected to the upper end of the second slider, the connecting gear is rotatably arranged above the base body through a gear seat, the connecting gear is meshed with the connecting rack, the connecting support plate is fixedly connected to the end of the connecting rack away from the downward pressure ring, the limit baffle is fixedly arranged at the end of the connecting support plate away from the downward pressure ring, one end of the connecting spring is fixedly connected to the limit baffle, and the other end is fixedly connected to the connecting support plate.

[0015] Furthermore, the fastening mechanism also includes two bevel gear racks, two active bevel gears, two driven bevel gears, two driving screw sleeves, two driving screws, four limit pins, two limit top plates, two connecting pressure plates and two limit pins. The two bevel gear racks are symmetrically fixed on both sides of the connecting gear. The two active bevel gears are respectively rotatably connected to the two bevel gear racks, the two active bevel gears are coaxially fixed to the connecting gear, the two driven bevel gears are respectively rotatably connected to the two bevel gear racks and mesh with the two active bevel gears, and the two driving screw sleeves are respectively coaxially fixed to the two driven bevel gears The driving screw sleeve is rotatably connected to the base body, the two driving screws are respectively threadedly connected to the two driving screw sleeves, two limit pins are fixedly arranged on both sides of each driving screw, the two limit top plates are respectively arranged above the two bevel gear frames and are fixedly connected to the corresponding limit pins, the two connecting pressure plates are respectively fixedly connected to the upper ends of the two driving screws, the two ends of the connecting pressure plates are respectively slidably connected to the corresponding limit pins, the two limit pins are respectively coaxially fixedly connected to the lower ends of the two driving screws, and the two limit pins can respectively pass through the base body downward and then be inserted into the upper part of the pipe pile body.

[0016] Furthermore, the reinforcement mechanism also includes a connecting roller, a connecting bracket, a leak-proof support plate, a number of reinforcing pins and a number of reinforcing top plates. A number of limiting slide grooves are formed at equal intervals on the side walls of the pipe pile body. The connecting roller is coaxially fixedly connected to the lower end of the positioning roller, the connecting bracket is coaxially fixedly connected to the lower end of the connecting roller, a number of leak-proof support plates are respectively fixedly connected to the connecting brackets, a number of leak-proof support plates and a number of limiting slide grooves are respectively dynamically sealed and connected, the lower ends of the reinforcement rollers are respectively abutted against the upper ends of the connecting brackets, a number of reinforcement pins are respectively fixedly arranged on the sides of a number of reinforcement perforations, one ends of a number of reinforcement top plates are respectively hinged to the upper ends of a number of reinforcement pins, and the other ends can respectively abut against the upper ends of a number of reinforcement rollers.

[0017] Furthermore, the reinforcement mechanism also includes an extrusion platform, a plurality of reinforcement inclined plates and a plurality of reinforcement springs. The extrusion platform is coaxially fixedly connected to the connecting roller shaft. The extrusion platform and the plurality of reinforcement side plates are slidingly connected to each other via an inclined surface. The plurality of reinforcement inclined plates are respectively fixedly connected to the lower ends of the plurality of reinforcement side plates on one side close to the extrusion platform. One end of the plurality of reinforcement springs is respectively fixedly connected to the plurality of reinforcement inclined plates, and the other end is respectively fixedly connected to the inner wall of the pipe pile body.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] First, the present invention uses a plurality of reinforcing rollers to realize the rapid connection between the cap body and the pipe pile body, and at the same time, the plurality of reinforcing rollers increase the bonding degree between the cap body and the post-cast concrete, which can effectively improve the stability between the cap body and the pipe pile body;

[0020] Second, the present invention adopts a plurality of reinforcing cross bars to increase the bonding between the post-cast concrete and the prefabricated pipe piles, and the plurality of reinforcing cross bars can resist the eccentric load and bending moment of the cap body after being subjected to shear force, thereby improving the stability of the cap body and the pipe pile body after being connected;

[0021] Thirdly, the connection structure of the present invention is simple and efficient. Operators do not need to tie steel bars during construction. They only need to press down several reinforcement rollers and then pour concrete between the prefabricated pedestal and the prefabricated pipe piles to complete the connection between the pedestal body and the pipe pile body, which greatly improves work efficiency and reduces construction costs and construction period pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 yes Figure 1 A magnified view of the structure at center;

[0024] Figure 3 It is a planar half-section view of the present invention;

[0025] Figure 4 yes Figure 3 A magnified view of the structure at B in the middle;

[0026] Figure 5 It is a three-dimensional half-section diagram of the present invention;

[0027] Figure 6 yes Figure 5 A magnified view of the structure at C in the middle;

[0028] Figure 7 yes Figure 5 A magnified view of the structure at D in the middle;

[0029] Figure 8 yes Figure 5 Enlarged view of the structure at E in the middle;

[0030] Fig. 9 yes Figure 5 A magnified view of the structure at F in the middle;

[0031] Fig.10 It is a three-dimensional structural schematic diagram of the pipe pile body and a plurality of reinforcing cross bars in the present invention.

[0032] The numbers in the figure are:

[0033] 1. Cap body; 2. Grouting hole; 3. Positioning pin; 4. Pipe pile body; 5. Limiting slide; 6. Reinforcement perforation; 7. Positioning groove; 8. Casting pipe; 9. Positioning mechanism; 10. Positioning roller; 11. Positioning baffle; 12. Reset spring; 13. Positioning frame; 14. Pressing ring; 15. Fastening mechanism; 16. Load-bearing bracket; 17. Load-bearing pin; 18. Fastening rod; 19. Limiting perforation; 20. Load-bearing flange; 21. First slider; 22. Second slider; 23. Connecting rack; 24. Connecting gear; 25. Connecting Support plate; 26, connecting spring; 27, limit baffle; 28, bevel gear rack; 29, active bevel gear; 30, driven bevel gear; 31, driving screw sleeve; 32, driving screw; 33, limit pin; 34, limit top plate; 35, connecting pressure plate; 36, limit pin; 37, reinforcement mechanism; 38, connecting roller; 39, connecting bracket; 40, leak-proof support plate; 41, reinforcement roller; 42, reinforcement pin; 43, reinforcement top plate; 44, reinforcement side plate; 45, reinforcement cross bar; 46, reinforcement inclined plate; 47, reinforcement spring; 48, extrusion table. DETAILED DESCRIPTION

[0034] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] refer to Figures 1 to 10 The connection structure of the prefabricated pipe pile and the prefabricated cap of the bridge includes a cap body 1 and a pipe pile body 4. The cap body 1 is symmetrically formed with two grouting holes 2 and a plurality of reinforcement through holes 6 evenly arranged along the circumferential direction; and also includes:

[0036] The pouring pipe 8 is coaxially connected to the pile body 4, and the upper end of the pouring pipe 8 abuts against the lower end of the cap body 1;

[0037] The positioning mechanism 9 is connected to the pipe pile body 4, and includes a positioning roller 10 and a plurality of fastening mechanisms 15. The positioning roller 10 is coaxially arranged with the pipe pile body 4, and the plurality of fastening mechanisms 15 are arranged at equal angles along the circumferential direction at the upper end of the positioning roller 10. The positioning roller 10 moves downward to drive the plurality of fastening mechanisms 15 to position the platform body 1.

[0038] The reinforcement mechanism 37 is connected to the positioning roller 10 (reference Figure 3 ), includes a plurality of reinforcement rollers 41 and a plurality of reinforcement side plates 44, the plurality of reinforcement rollers 41 are respectively coaxially arranged with a plurality of reinforcement through holes 6, the plurality of reinforcement side plates 44 are arranged at equal angles along the circumferential direction of the positioning roller 10, and a plurality of uniformly arranged reinforcement cross bars 45 are fixedly connected to a side of each reinforcement side plate 44 away from the positioning roller 10.

[0039] When the structure is in operation, the operator first places the cap body 1 on the upper end of the pouring tube 8, and then presses down the plurality of reinforcement rollers 41 after the cap body 1 and the pouring tube 8 are aligned. At this time, the plurality of fastening mechanisms 15 will position and lock the cap body 1. After the plurality of reinforcement rollers 41 move downward, the plurality of reinforcement rollers 41 can eventually push the plurality of reinforcement side plates 44 to move away from the positioning rollers 10 until the plurality of reinforcement cross bars 45 abut against the inner wall of the pouring tube 8. Finally, the operator injects the concrete slurry into the pouring tube 8 from the grouting hole 2, and the connection between the cap body 1 and the pile body 4 is completed after the concrete slurry solidifies.

[0040] In order to facilitate rapid positioning of the cap body 1 and the pile body 4, the following features are also specifically provided:

[0041] The positioning mechanism 9 also includes two positioning pins 3 (such as Fig. 9 As shown, the upper end of the pile body 4 is symmetrically formed with two positioning grooves 7 (as shown in FIG. Fig.10 As shown in the figure, two positioning pins 3 are symmetrically fixed to the lower end of the cap body 1, and the two positioning pins 3 correspond to the two positioning grooves 7. When the operator puts the cap body 1 on the upper end of the pipe pile body 4, the operator needs to rotate the angle of the cap body 1 so that the two positioning pins 3 correspond to the two positioning grooves 7, so that the subsequent positioning mechanism 9 and the reinforcement mechanism 37 can operate normally.

[0042] In order to supplement the specific structure of the positioning mechanism 9, the following features are also specifically provided:

[0043] The positioning mechanism 9 further includes a positioning baffle 11, a return spring 12 and a positioning frame 13. The positioning baffle 11 is coaxially fixedly connected to the upper part of the pile body 4 (such as Figure 7 As shown in the figure, the positioning roller 10 is coaxially connected to the positioning baffle 11 for sliding, the positioning frame 13 is coaxially fixedly connected to the upper end of the positioning roller 10, the return spring 12 is coaxially sleeved on the outside of the positioning roller 10, the upper end of the return spring 12 is fixedly connected to the positioning frame 13, and the lower end is fixedly connected to the positioning baffle 11. Before the positioning roller 10 moves downward, the return spring 12 will provide support force for the positioning roller 10 through the positioning frame 13 to prevent the positioning roller 10 from moving in advance.

[0044] In order to supplement the specific structure of the fastening mechanism 15, the following features are also specifically provided:

[0045] The positioning mechanism 9 further includes a pressing ring 14, and the fastening mechanism 15 further includes a bearing bracket 16, a bearing pin 17 and a fastening rod 18. The bearing bracket 16 is fixedly arranged on the upper part of the pipe pile body 4 and is fixedly connected to the pipe pile body 4. The lower end of the fastening rod 18 is hinged to the positioning frame 13. The middle part of the fastening rod 18 is formed with a limited position through hole 19, and the upper end is formed with a bearing flange 20 (such as Figure 4 As shown in the figure, the bearing pin 17 is fixedly connected to the bearing bracket 16 and is slidably connected to the limiting through hole 19. The pressing ring 14 is coaxially arranged with the support body 1. The bearing flange 20 can be fastened with the upper end of the pressing ring 14 after the fastening rod 18 moves downward. When the positioning roller 10 moves, the positioning roller 10 drives the fastening rod 18 to move through the positioning bracket 13. When the fastening rod 18 moves, it is limited by the bearing pin 17 until the bearing flange 20 at the upper end of the fastening rod 18 is fastened on the pressing ring 14 and pushes the pressing ring 14 to move downward.

[0046] In order to further compensate for the specific structure of the fastening mechanism 15, the following features are also specifically provided:

[0047] The positioning mechanism 9 also includes a first slider 21, a second slider 22, a connecting rack 23, a connecting gear 24, a connecting support plate 25, a connecting spring 26 and a limit baffle 27. The first slider 21 is slidably connected to the support body 1 in a vertical state, and the upper end of the first slider 21 is fixedly connected to the downward pressure ring 14. The second slider 22 is slidably connected to the support body 1 in a horizontal state. The end of the second slider 22 close to the first slider 21 is slidably connected to each other through an inclined surface. The connecting rack 23 is fixedly connected to the upper end of the second slider 22, and the connecting gear 24 is rotatably arranged above the support body 1 through a gear seat. The connecting gear 24 meshes with the connecting rack 23, and the connecting support plate 25 is fixedly connected to the end of the connecting rack 23 away from the downward pressure ring 14. The limit baffle 27 is fixedly arranged at the end of the connecting support plate 25 away from the downward pressure ring 14 (such as Figure 2 As shown in the figure, one end of the connecting spring 26 is fixedly connected to the limit baffle 27, and the other end is fixedly connected to the connecting support plate 25. When the pressing ring 14 moves downward, the pressing ring 14 will push the second slider 22 to move through the first slider 21. After the second slider 22 moves, it will push the connecting gear 24 to rotate through the connecting rack 23. When the connecting rack 23 moves, the connecting spring 26 fixedly connected to the connecting rack 23 through the connecting support plate 25 will be compressed. The connecting spring 26 can ensure that the pressing ring 14 will not move downward when it is not against the bearing flange 20, which is helpful for connecting the base body 1 and the pile body 4.

[0048] In order to strengthen the connection between the pile body 4 and the cap body 1, the following features are also specifically provided:

[0049] The fastening mechanism 15 also includes two bevel gear racks 28, two active bevel gears 29, two driven bevel gears 30, two drive screw sleeves 31, two drive screws 32, four limit pins 33, two limit top plates 34, two connection pressure plates 35 and two limit pins 36. The two bevel gear racks 28 are symmetrically fixed on both sides of the connection gear 24 (such as Figure 2 As shown in the figure, the two active bevel gears 29 are respectively connected to the two bevel gear racks 28 for rotation, the two active bevel gears 29 are coaxially fixedly connected to the connecting gear 24, the two driven bevel gears 30 are respectively connected to the two bevel gear racks 28 for rotation and mesh with the two active bevel gears 29, the two driving screw sleeves 31 are respectively connected to the two driven bevel gears 30 for rotation, the driving screw sleeves 31 are connected to the platform body 1 for rotation, the two driving screws 32 are respectively connected to the two driving screw sleeves 31 for threading, and the two sides of each driving screw 32 are respectively connected to the two driving screw sleeves 31 for threading. Two limit pins 33 are fixedly provided, two limit top plates 34 are respectively arranged above the two bevel gear racks 28 and are fixedly connected to the corresponding limit pins 33, two connecting pressure plates 35 are respectively fixedly connected to the upper ends of the two driving screws 32, and the two ends of the connecting pressure plates 35 are respectively slidably connected to the corresponding limit pins 33, and two limit plugs 36 are respectively fixedly connected to the lower ends of the two driving screws 32 coaxially, and the two limit plugs 36 can respectively pass through the cap body 1 downward and then be inserted into the upper part of the pipe pile body 4 (such as Fig.10 As shown). When the connecting gear 24 rotates, the connecting gear 24 will respectively drive the two driven bevel teeth 30 to rotate through the two active bevel teeth 29. After the two driven bevel teeth 30 rotate, they will respectively drive the driving screw 32 to move through the two driving screw sleeves 31. Since the upper end of the driving screw 32 is limited by the connecting pressure plate 35, the driving screw 32 will drive the limiting pin 36 to move downward until the limiting pin 36 passes through the foundation body 1 downward and is inserted into the upper part of the pipe pile body 4, thereby strengthening the connection between the pipe pile body 4 and the foundation body 1.

[0050] It should be noted that, since the two driven bevel gears 30 rotate in opposite directions, the threads of the driving screw rods 32 on both sides of the same connecting gear 24 should be opposite to each other, thereby preventing the driving screw rods 32 from failing to move downward normally.

[0051] In order to supplement the specific structure of the reinforcement mechanism 37, the following features are also specifically provided:

[0052] The reinforcement mechanism 37 also includes a connecting roller 38, a connecting bracket 39, a leak-proof support plate 40, a plurality of reinforcing pins 42 and a plurality of reinforcing top plates 43. A plurality of limiting slide grooves 5 (such as Figure 8 As shown in FIG. 1 ), the connecting roller 38 is coaxially fixedly connected to the lower end of the positioning roller 10 (as shown in FIG. Figure 5As shown in the figure, the connecting bracket 39 is coaxially fixedly connected to the lower end of the connecting roller shaft 38, a plurality of anti-leakage support plates 40 are respectively fixedly connected to the connecting bracket 39, a plurality of anti-leakage support plates 40 and a plurality of limiting slide grooves 5 are respectively connected in a dynamic seal, the lower end of the reinforcement roller shaft 41 is respectively against the upper end of the connecting bracket 39, and a plurality of reinforcement pins 42 are respectively fixedly arranged on the side of a plurality of reinforcement perforations 6 (as shown in the figure). Figure 6 As shown in the figure, one end of the several reinforcement top plates 43 is respectively hinged with the upper end of the several reinforcement pin shafts 42, and the other end can be respectively abutted with the upper end of the several reinforcement roller shafts 41. When the several reinforcement roller shafts 41 move downward, the several reinforcement roller shafts 41 will abut against the connection bracket 39 and push the connection bracket 39 to move downward. After the connection bracket 39 moves, it will drive the positioning roller shaft 10 to move downward (as can be seen from the above text, after the positioning roller shaft 10 moves, it will drive the several bearing flanges 20 to be fastened to the upper end of the downward pressure ring 14, and drive the several limiting pins 36 to pass through the foundation body 1 downward and insert into the upper part of the pipe pile body 4, thereby strengthening the connection between the pipe pile body 4 and the foundation body 1). When the connection bracket 39 moves, the anti-leakage support plate 40 connected to the connection bracket 39 will move in the limiting slide groove 5 to prevent the concrete slurry from pouring back into the interior of the pipe pile body 4, thereby causing the concrete inside the pipe pile body 4 to be unevenly distributed and affect the density and hardness after solidification. At the same time, when each reinforcement roller 41 moves downward, the operator can rotate the corresponding reinforcement top plate 43 so that the lower end of the reinforcement top plate 43 can be against the upper end of the reinforcement roller 41, so as to increase the bonding degree between the base body 1 and the post-poured concrete, and effectively improve the stability between the base body 1 and the pipe pile body 4.

[0053] In order to further supplement the specific structure of the reinforcement mechanism 37, the following features are also specifically provided:

[0054] The reinforcement mechanism 37 also includes an extrusion platform 48, a plurality of reinforcement inclined plates 46 and a plurality of reinforcement springs 47. The extrusion platform 48 is coaxially fixedly connected to the connecting roller shaft 38. The extrusion platform 48 and the side close to the plurality of reinforcement side plates 44 are connected to each other through an inclined sliding connection. The plurality of reinforcement inclined plates 46 are respectively fixedly connected to the side of the lower end of the plurality of reinforcement side plates 44 close to the extrusion platform 48. One end of the plurality of reinforcement springs 47 is respectively fixedly connected to the plurality of reinforcement inclined plates 46, and the other end is respectively fixedly connected to the inner wall of the pipe pile body 4. When the connecting roller 38 moves, the connecting roller 38 will push the several reinforcing side plates 44 to move away from the axis of the connecting roller 38 through the extrusion platform 48. After the several reinforcing side plates 44 move, they will drive the corresponding several reinforcing cross bars 45 to abut against the inner wall of the pouring pipe 8. At this time, the several reinforcing cross bars 45 increase the bonding degree between the post-cast concrete and the prefabricated pipe piles, and the several reinforcing cross bars 45 can resist the eccentric load and bending moment of the pedestal body 1 after being subjected to shear force, thereby improving the stability of the pedestal body 1 and the pipe pile body 4 after being connected. The several reinforcing springs 47 can ensure that the several reinforcing side plates 44 can be close to the axis direction of the connecting roller 38 when the connecting roller 38 is not moving, thereby facilitating the transportation and installation of the pipe pile body 4.

[0055] The working principle of this structure is that when the structure is used, the operator first places the pedestal body 1 on the upper end of the pouring tube 8, and then presses down the several reinforcement rollers 41 after the pedestal body 1 and the pouring tube 8 are aligned. After the positioning rollers 10 move, they will drive the several bearing flanges 20 to buckle on the upper end of the downward pressing ring 14, and drive the several limit pins 36 to pass through the pedestal body 1 downward and insert into the upper part of the pipe pile body 4, thereby strengthening the connection between the pipe pile body 4 and the pedestal body 1. After the several reinforcement rollers 41 move downward, the several reinforcement rollers 41 can eventually push the several reinforcement side plates 44 to move away from the positioning rollers 10 until the several reinforcement cross bars 45 are against the inner wall of the pouring tube 8. Finally, the operator injects the concrete slurry into the pouring tube 8 from the grouting hole 2, and the connection between the pedestal body 1 and the pipe pile body 4 is completed after the concrete slurry solidifies.

Claims

1. A connection structure between a prefabricated pipe pile and a prefabricated cap for a bridge, comprising a cap body (1) and a pipe pile body (4), characterized in that: The base body (1) is symmetrically formed with two grouting holes (2) and a plurality of reinforcement through holes (6) evenly arranged along the circumferential direction; and further comprises: A pouring pipe (8) is coaxially fixedly connected to the pipe pile body (4), and the upper end of the pouring pipe (8) abuts against the lower end of the cap body (1); The positioning mechanism (9) is connected to the pipe pile body (4), and comprises a positioning roller (10) and a plurality of fastening mechanisms (15). The positioning roller (10) is coaxially arranged with the pipe pile body (4), and the plurality of fastening mechanisms (15) are arranged at equal angles along the circumferential direction on the upper end of the positioning roller (10). The positioning roller (10) can move downward to drive the plurality of fastening mechanisms (15) to position the base body (1); A reinforcement mechanism (37) connected to the positioning roller shaft (10), comprising a plurality of reinforcement roller shafts (41) and a plurality of reinforcement side plates (44), wherein the plurality of reinforcement roller shafts (41) are respectively arranged coaxially with the plurality of reinforcement perforations (6), and the plurality of reinforcement side plates (44) are arranged at equal angles along the circumferential direction of the positioning roller shaft (10), and a plurality of uniformly arranged reinforcement cross bars (45) are fixedly connected to a side of each reinforcement side plate (44) away from the positioning roller shaft (10); The positioning mechanism (9) further comprises two positioning pins (3), the upper end of the pipe pile body (4) is symmetrically formed with two positioning grooves (7), the two positioning pins (3) are symmetrically fixedly connected to the lower end of the base body (1), and the two positioning pins (3) correspond to the two positioning grooves (7) respectively; The positioning mechanism (9) further comprises a positioning baffle (11), a return spring (12) and a positioning frame (13); the positioning baffle (11) is coaxially fixedly connected to the upper part of the pipe pile body (4); the positioning roller (10) is coaxially slidably connected to the positioning baffle (11); the positioning frame (13) is coaxially fixedly connected to the upper end of the positioning roller (10); the return spring (12) is coaxially sleeved on the outside of the positioning roller (10); the upper end of the return spring (12) is coaxially fixedly connected to the positioning frame (13); and the lower end of the return spring (12) is coaxially fixedly connected to the positioning baffle (11); The positioning mechanism (9) further comprises a downward pressing ring (14), and the fastening mechanism (15) further comprises a bearing bracket (16), a bearing pin (17) and a fastening rod (18). The bearing bracket (16) is fixedly arranged on the upper part of the pipe pile body (4) and is fixedly connected to the pipe pile body (4). The lower end of the fastening rod (18) is hinged to the positioning frame (13). A limiting through hole (19) is formed in the middle part of the fastening rod (18), and a bearing flange (20) is formed at the upper end. The bearing pin (17) is fixedly connected to the bearing bracket (16) and is slidably connected to the limiting through hole (19). The downward pressing ring (14) is coaxially arranged with the support body (1), and the bearing flange (20) can be fastened with the upper end of the downward pressing ring (14) after the fastening rod (18) moves downward. The positioning mechanism (9) further comprises a first slider (21), a second slider (22), a connecting rack (23), a connecting gear (24), a connecting support plate (25), a connecting spring (26) and a limit baffle (27), wherein the first slider (21) is slidably connected to the support platform body (1) in a vertical state, the upper end of the first slider (21) is fixedly connected to the downward pressing ring (14), the second slider (22) is slidably connected to the support platform body (1) in a horizontal state, and the ends of the second slider (22) and the first slider (21) that are close to each other are slidably connected to each other via an inclined surface. The connecting rack (23) is fixedly connected to the upper end of the second sliding block (22), the connecting gear (24) is rotatably arranged above the support body (1) through the gear seat, the connecting gear (24) is meshed with the connecting rack (23), the connecting support plate (25) is fixedly connected to one end of the connecting rack (23) away from the downward pressure ring (14), the limit baffle (27) is fixedly arranged at one end of the connecting support plate (25) away from the downward pressure ring (14), one end of the connecting spring (26) is fixedly connected to the limit baffle (27), and the other end is fixedly connected to the connecting support plate (25).

2. The connection structure of the prefabricated pipe pile and the prefabricated cap of the bridge according to claim 1 is characterized in that: The fastening mechanism (15) further comprises two bevel gear racks (28), two active bevel gears (29), two driven bevel gears (30), two driving screw sleeves (31), two driving screw rods (32), four limit pins (33), two limit top plates (34), two connecting pressure plates (35) and two limit pins (36). The two bevel gear racks (28) are symmetrically fixedly arranged on both sides of the connecting gear (24). The two active bevel gears (29) are respectively rotatably connected to the two bevel gear racks (28). The two active bevel gears (29) are coaxially fixedly connected to the connecting gear (24). The two driven bevel gears (30) are respectively rotatably connected to the two bevel gear racks (28) and mesh with the two active bevel gears (29). The two driving screw sleeves (31) are respectively connected to the two driven bevel gears (30). The two drive screws (32) are respectively threadedly connected to the two drive screw sleeves (31); two limit pins (33) are respectively fixedly arranged on both sides of each drive screw (32); two limit top plates (34) are respectively arranged above the two bevel gear racks (28) and are respectively fixedly connected to the corresponding limit pins (33); two connecting pressure plates (35) are respectively fixedly connected to the upper ends of the two drive screws (32); the two ends of the connecting pressure plates (35) are respectively slidably connected to the corresponding limit pins (33); two limit pins (36) are respectively coaxially fixedly connected to the lower ends of the two drive screws (32); the two limit pins (36) can respectively pass through the cap body (1) downwards and then be inserted into the upper part of the pipe pile body (4).

3. The connection structure of the prefabricated pipe pile and the prefabricated cap of the bridge according to claim 2 is characterized in that: The reinforcement mechanism (37) further comprises a connecting roller (38), a connecting bracket (39), a leak-proof support plate (40), a plurality of reinforcing pins (42) and a plurality of reinforcing top plates (43). A plurality of limiting slide grooves (5) are formed at equal intervals on the side wall of the pipe pile body (4). The connecting roller (38) is coaxially fixedly connected to the lower end of the positioning roller (10). The connecting bracket (39) is coaxially fixedly connected to the lower end of the connecting roller (38). The plurality of leak-proof support plates (40) are respectively connected to the connecting roller (38). The connecting bracket (39) is fixedly connected, the plurality of anti-leakage support plates (40) and the plurality of limit slide grooves (5) are respectively connected in a dynamic seal, the lower ends of the reinforcement roller shafts (41) are respectively abutted against the upper ends of the connecting bracket (39), the plurality of reinforcement pin shafts (42) are respectively fixedly arranged beside the plurality of reinforcement through holes (6), one end of the plurality of reinforcement top plates (43) is respectively hinged to the upper ends of the plurality of reinforcement pin shafts (42), and the other ends can respectively abut against the upper ends of the plurality of reinforcement roller shafts (41).

4. The connection structure of the prefabricated pipe pile and the prefabricated cap of the bridge according to claim 3 is characterized in that: The reinforcement mechanism (37) further comprises an extrusion platform (48), a plurality of reinforcement inclined plates (46) and a plurality of reinforcement springs (47); the extrusion platform (48) is coaxially fixedly connected to the connecting roller shaft (38); the extrusion platform (48) and the plurality of reinforcement side plates (44) are slidingly connected to each other via an inclined surface; the plurality of reinforcement inclined plates (46) are respectively fixedly connected to the lower ends of the plurality of reinforcement side plates (44) at the sides close to the extrusion platform (48); one end of the plurality of reinforcement springs (47) is respectively fixedly connected to the plurality of reinforcement inclined plates (46) and the other end is respectively fixedly connected to the inner wall of the pipe pile body (4).

Images