A prefabricated assembled reinforced concrete bridge bumper and its construction method

Abstract

The present application discloses a prefabricated assembled reinforced concrete bridge bumper block, which includes: bridge piers, bumper blocks, the first bridge, the second bridge, fixed bases, card slots, sleeves, side plates, first screws, fitting plates, grooves, embedded blocks, positioning rods, second screws, through holes, through openings, sunken grooves, long screws, hydraulic expansion rods, baffles, bottom plates, wedge-shaped plates, first installation grooves, connecting pipes, oil delivery pipes, second installation grooves, cushion plates and openings. The construction method of the prefabricated assembled reinforced concrete bridge bumper block includes: pouring of fixed bases, pouring of bumper blocks, positioning of embedded blocks, installation of bumper blocks, installation of baffles, installation of the first bridge and installation of the second bridge. The beneficial effect of the present application is that it uses assembled bumper blocks for the installation of reinforced concrete bridges, pours embedded blocks inside the bumper blocks to improve the structural stability, can reduce the impact force exerted by the bridges on the bumper blocks, and is provided with hydraulic expansion rods to realize the reset function after the bridge cross beam deflects.

Description

Technical Field

[0001] The present invention relates to a bridge bumper and a construction method thereof, and particularly to a prefabricated and assembled reinforced concrete bridge bumper and a construction method thereof, belonging to the technical field of application of reinforced concrete bridge bumpers. Background Art

[0002] Bridge bumpers are indispensable transverse limiting components for medium and small-span beam bridges. During an earthquake, they limit the relative displacement between the upper structure and the top of the pier and abutment to prevent the upper structure from having excessive displacement, falling beams, and causing serious damage to the lower structure. Rubber bumpers are made by processing natural rubber and chloroprene rubber. Steel plate bumpers and reinforced concrete bumpers are also used. Bridge bumpers are prone to being damaged in ways such as shear cracking, shearing, impact cracking, impact breaking, and impact shattering. Curved bridges are more severely damaged than straight bridges, skewed bridges are more damaged than orthogonal bridges, and the seismic bumpers at the expansion joint position are more severely damaged than those at non-expansion joint positions. The cracking of bumpers usually occurs at the connection part between the bumper and the capping beam (abutment cap). The bridge types where bumpers are most commonly set are continuous beam bridges and simply supported beam bridges. For continuous beam bridges, the strength of the bumpers should be increased based on that of simply supported beam bridges, which can effectively prevent beam falling and the stiffness of the bumpers. The greater the stiffness of the bumper, the less energy the bumper absorbs from the beam during the collision, and the greater the damage to the lower structure. The smaller the stiffness of the bumper, the easier it is for the beam to fall. Initial spacing. Generally, a certain initial distance is set between the main beam and the bumper, which is called the initial spacing and is used to limit the displacement of the main beam. The initial spacing should not be too large, generally preferably 10 - 20 cm. Bridge strength. Different spans of bridges will cause changes in the weight of the bridge, the reaction force of the bearings, the overall structure of the bridge, and the deformation and displacement performance, which is a complex influencing factor. Slenderness ratio of the pier. When the slenderness ratio of the pier exceeds a certain range, the problem of buckling instability will be involved, and the pier will be damaged due to instability before reaching the ultimate strength. Under the action of an earthquake, the shear force and bending moment at the bottom of the pier are the largest. When the problem of instability is involved, the pier is damaged at the position with the largest deflection. When the slenderness ratio exceeds a certain range, the pier belongs to a flexible pier, and when setting the strength of the bumper, it will be reduced, and the connection with the capping beam will be weaker, so as to protect the pier from buckling instability when an earthquake comes.

[0003] In the patent document "CN202011005163.0 A T-shaped through-type bridge anti-collision block", it has the characteristics of strong energy dissipation capacity, good stability, uniform damping distribution, and strong self-recovery ability. However, the main damage to the bridge block is manifested in bridge impacts, which causes the block to lose its limiting function. In severe cases, beam-drop problems are likely to occur, increasing safety hazards. Moreover, the existing blocks are formed by on-site casting, which is greatly affected by the environment and cannot ensure whether the structural strength of the blocks can meet the usage requirements. Once damaged, they are inconvenient to replace, making it difficult to ensure the stable use of concrete bridges. Currently, there is no prefabricated assembled reinforced concrete bridge block and its construction method that is reasonably reliable in structure, can improve the stability performance of the block and is convenient for replacement. Summary of the Invention

[0004] To address the deficiencies of the prior art, this application uses assembled blocks for the installation of reinforced concrete bridges. They can be quickly fabricated through casting, which can solve the problem of on-site casting of existing blocks being affected by the environment. At the same time, embedding blocks are cast inside the blocks, which can further improve the structural stability and form a buffer gap between the bridges, reducing the impact force exerted by the bridges on the blocks.

[0005] To further solve the problems in the prior art: It also has the function of fixing the block. The stable limiting of the block can be achieved through the provided side plates and fitting plates, and the structural stability of the block can be further ensured by installing a fixed base, solving the problem of low structural strength and easy damage of the assembled block, ensuring the limiting function of the bridge, and extending the service life of the block.

[0006] To further solve the problems in the prior art: A hydraulic telescopic rod is provided to achieve the reset function after the bridge crossbeam is displaced. It can also play a buffering role during movement, minimizing the displacement amplitude of the bridge, effectively playing a protective role, and being able to correct the position of the bridge after displacement to prevent safety accidents caused by excessive displacement of the bridge.

[0007] To address the deficiencies in the prior art, the present application provides a prefabricated and assembled reinforced concrete bridge block and its construction method, including: a block installed on a bridge pier and the first bridge and the second bridge located on both sides of the block; wherein, a fixed base is fitted and installed inside the bridge pier, a clamping groove is formed at the edge of the fixed base, the top of the fixed base is fixedly connected with a sleeve, and the fixed base is fixedly connected with a side plate through a first screw rod, the side plate is fixedly connected with a fitting plate, the fitting plate is in fitting connection with the side wall of the block, an insertion block is fitted and installed inside the block, the insertion block is fixedly connected with the block through a second screw rod, a perforation is formed at the edge of the insertion block, a through hole corresponding to the perforation is formed inside the block, and the through hole is correspondingly arranged above the sleeve, a long screw rod is arranged at the top of the block, the long screw rod is respectively inserted through the through hole and the perforation, and the long screw rod is in threaded connection with the inside of the sleeve, a hydraulic telescopic rod is fixedly connected to the side wall of the insertion block, the telescopic end of the hydraulic telescopic rod is fixedly connected with a baffle plate, and the baffle plate is fixedly connected with a bottom plate through a wedge-shaped plate.

[0008] Further, the first bridge and the second bridge are respectively arranged above the bridge pier, a first installation groove and a second installation groove are respectively arranged above the bridge pier, the inside of the first installation groove is in fitting connection with the first bridge, the inside of the second installation groove is in fitting connection with the second bridge, two symmetrically distributed blocks are arranged at the top of the bridge, the two blocks are respectively located on both sides of the first installation groove, and the two blocks are respectively in fitting connection with both sides of the bottom of the first bridge.

[0009] Further, a number of uniformly distributed clamping grooves are arranged on both sides of the fixed base, the fixed base and the inside of the top end of the bridge pier are fixed by concrete pouring, a number of uniformly distributed first screw rods are arranged on one side of the fixed base, each first screw rod is inserted through the inside of the bridge pier, and each first screw rod is in threaded connection with the inside of the fixed base.

[0010] Further, the side wall of the bridge pier is in fitting connection with the side plate, four first screw rods are arranged at both ends of the side plate, the four first screw rods are respectively located around the fixed base, the top of the side plate is fixedly connected or integrally formed with a fitting plate, the number of the fitting plates is two, the two fitting plates are respectively located on one side of the block, a groove is formed on the inner side wall of the fitting plate, and a number of uniformly distributed second screw rods are arranged inside the groove.

[0011] Further, the block is integrally formed by reinforced concrete, two insertion blocks are integrally formed by concrete inside the block, the two insertion blocks are distributed up and down, the adjacent surfaces of the two insertion blocks are respectively in fitting insertion with the inside of a positioning rod for positioning during the integral formation of the insertion blocks, a second screw rod is arranged around one side of each insertion block, and each second screw rod is in threaded connection with the inside of the insertion block.

[0012] Further, a sunken groove is formed at the top of the stopper, and the sunken groove communicates with the through hole. The number of the through holes is several, and the several through holes are evenly distributed in a circular structure to the edge of the embedding block. The number of the through holes is the same as that of the perforations. The long screw rod extends below the stopper, and the long screw rod is located inside the sunken groove.

[0013] Further, a backing plate is provided between the stopper and the baffle. Both sides of the backing plate are respectively attached and connected to the side walls of the first bridge and the second bridge, and the backing plate is fitted and connected to the inside of the first installation groove.

[0014] Further, the baffle is provided with a bottom plate vertically distributed. Four hydraulic expansion rods are evenly distributed on one side of the baffle. The four hydraulic expansion rods are respectively located around the baffle, and the four hydraulic expansion rods are fixedly connected to the connecting pipe. Each connecting pipe is connected to the hydraulic oil pump through an oil delivery pipe to adjust the extrusion force of the hydraulic expansion rod.

[0015] Further, several wedge-shaped plates are evenly distributed between the baffle and the bottom plate. The bottom plate is attached and connected to the bottom of the second bridge. Several evenly distributed openings are formed at the bottom of the second bridge, and each wedge-shaped plate is fitted and connected to the inside of the opening.

[0016] Further, a construction method for a prefabricated and assembled reinforced concrete bridge stopper, the construction method comprising the following steps:

[0017] (1) Pouring the fixed base. When the pier is almost poured, place the fixed base in the reinforced concrete of the formed pier, and after passing the matching round rod through the threaded hole of the first screw rod, complete the pouring of the pier to stably install the fixed base inside the pier. The card slots provided on both sides of the fixed base can enable the concrete to be filled smoothly, so that the sleeve above the fixed base is at the same horizontal position as the top surface of the pier;

[0018] (2) Pouring the stopper. Pour the stopper through the formwork. When pouring, first insert the vertical rod matching the through hole into the formwork, and insert the cross rod matching the hydraulic expansion rod into the formwork. After the concrete is poured, pass the perforation of one of the embedding blocks through the round rod and place it on the concrete surface, and then insert the positioning rod above the embedding block and continue to pour the concrete;

[0019] (3) Positioning the embedding block. Pass the other embedding block through the round rod and place it on the concrete surface, and insert the embedding block on the top of the positioning rod to realize the positioning of the two embedding blocks. During the pouring process, protect the threaded hole inside the embedding block through the round rod matching the second screw rod. When the pouring is completed, disassemble the formwork, the round rod and the vertical rod to complete the pouring of the stopper;

[0020] (4) Installation of the stop block: Place the cast stop block on the pier. Pass the long screw through the through-hole and the perforation, and then tighten it inside the sleeve to fix the stop block, so that the long screw is located inside the sinking groove. First, pass the second screw through the stop block and tighten it inside the embedded block to achieve stable fixation. Then, attach the side plate to the side wall of the pier, pass the first screw through the side plate and the pier, and tighten it inside the fixed base, so that the fitting plate is located on the side wall of the stop block, and the second screw is located inside the groove of the fitting plate;

[0021] (5) Installation of the baffle: Place the baffle, the bottom plate and the wedge plate on the other side of the pier, make the bottom plate fit with the pier, fix the two ends of the hydraulic telescopic rod to the embedded block and the baffle respectively, and install a cushion plate on one side of the baffle, so that the baffle is located inside the second installation groove. At this time, the installation of the baffle is completed;

[0022] (6) Installation of the first bridge: Lap the first bridge on one side of the pier, and make the stop blocks on both sides support both sides of the first bridge, and make the side wall of the first bridge and the side wall of the stop block be in the same vertical position, and make the side wall of the first bridge contact with one side of the cushion plate;

[0023] (7) Installation of the second bridge: Lap the second bridge on the bottom plate, so that the openings at the bottom of the second bridge and the wedge plates are staggered to achieve the positioning installation of the second bridge. When a transverse shear force occurs, the baffle pushes the stop block through the hydraulic telescopic rod. At this time, the hydraulic telescopic rod plays an energy absorption role, and at the same time, there is enough clearance for the expansion and contraction of the box girder. Moreover, the stop block is stably installed on the pier in a detachable manner, and the side plate and the fitting plate are used to play a limiting role, which can achieve sufficient stability.

[0024] The advantages of this application are as follows: It provides a prefabricated assembled reinforced concrete bridge stop block and its construction method with reasonable and reliable structure, which can improve the stability performance of the stop block and is convenient for replacement. It uses assembled stop blocks for the installation of reinforced concrete bridges, can be quickly made by casting, can solve the problem that the on-site casting of existing stop blocks is affected by the environment. At the same time, by pouring the embedded block inside the stop block, it can further improve the structural stability, and can form a buffer gap between the bridges, which can reduce the impact force caused by the bridge on the stop block. At the same time, it has the function of fixing the stop block. The stable limit of the stop block can be realized through the set side plate and fitting plate, and the structural stability of the stop block can be further ensured by installing the fixed base, solving the problem that the assembled stop block has low structural strength and is easy to be damaged, ensuring the limiting effect of the bridge, improving the service life of the stop block, and setting the hydraulic telescopic rod can realize the reset function after the bridge crossbeam deviates. It can also play a buffering role during movement, minimizing the movement amplitude of the bridge, effectively playing a protective role, and can correct the position of the bridge after deviation, preventing the problem that the bridge has too large a deviation and causes a safety accident. Description of the Drawings

[0025] The accompanying drawings, which form a part of this application, are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more obvious. The schematic embodiments of the accompanying drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0026] Figure 1 is a schematic structural diagram of a prefabricated assembled reinforced concrete bridge block and its construction method according to an embodiment of this application;

[0027] Figure 2 is Figure 1 a three-dimensional structural diagram during assembly in the illustrated embodiment;

[0028] Figure 3 is Figure 2 a structural diagram from the first perspective in the illustrated embodiment;

[0029] Figure 4 is Figure 3 a front external view structural diagram in the illustrated embodiment;

[0030] Figure 5 is Figure 3 a top view structural diagram in the illustrated embodiment;

[0031] Figure 6 is Figure 3 a side view structural diagram at the block in the illustrated embodiment;

[0032] Figure 7 is Figure 3 a side view structural diagram at the side plate in the illustrated embodiment;

[0033] Figure 8 is Figure 3 a three-dimensional structural diagram at the fixed base in the illustrated embodiment;

[0034] Figure 9 is Figure 3 a three-dimensional structural diagram at the embedding block in the illustrated embodiment;

[0035] Figure 10 is Figure 3 a three-dimensional structural diagram at the baffle in the illustrated embodiment.

[0036] The meanings of the reference numerals in the drawings:

[0037] 1. Pier, 2. Stopper, 3. First bridge, 4. Second bridge, 5. Fixed base, 6. Card slot, 7. Sleeve, 8. Side plate, 9. First screw, 10. Fitting plate, 11. Groove, 12. Embedded block, 13. Positioning rod, 14. Second screw, 15. Perforation, 16. Through hole, 17. Sunk groove, 18. Long screw, 19. Hydraulic telescopic rod, 20. Baffle, 21. Bottom plate, 22. Wedge plate, 23. First installation groove, 24. Connecting pipe, 25. Oil delivery pipe, 26. Second installation groove, 27. Pad, 28. Opening. Detailed implementation manner

[0038] In order to enable those skilled in the art of the present technology to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0039] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of the present application here. In addition, the terms "including" and "having" and any of their deformations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0040] In the present application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation.

[0041] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific circumstances.

[0042] In addition, the terms "installed", "set up", "equipped with", "connected", "linked", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will detail this application with reference to the drawings and in combination with the embodiments.

[0044] Refer to Figures 1 to 10 , a prefabricated reinforced concrete bridge bumper and its construction method include: a bumper 2 installed on a bridge pier 1 and a first bridge 3 and a second bridge 4 located on both sides of the bumper 2.

[0045] Refer to Figures 1 to 10 , as a preferred solution, wherein a fixed base 5 is fitted and installed inside the bridge pier 1, a card slot 6 is opened at the edge of the fixed base 5, the top of the fixed base 5 is fixedly connected to a sleeve 7, and the fixed base 5 is fixedly connected to a side plate 8 through a first screw 9. The side plate 8 is fixedly connected to a fitting plate 10, the fitting plate 10 is in fitting connection with the side wall of the bumper 2, an embedding block 12 is fitted and installed inside the bumper 2, the embedding block 12 is fixedly connected to the bumper 2 through a second screw 14, a through hole 15 is opened at the edge of the embedding block 12, through holes 16 corresponding to the through hole 15 are opened inside the bumper 2, and the through holes 16 are correspondingly arranged above the sleeve 7. A long screw 18 is provided at the top of the bumper 2, the long screw 18 is inserted through the through holes 16 and the through hole 15 respectively, and the long screw 18 is in threaded connection with the inside of the sleeve 7. A hydraulic telescopic rod 19 is fixedly connected to the side wall of the embedding block 12, the telescopic end of the hydraulic telescopic rod 19 is fixedly connected to a baffle 20, and the baffle 20 is fixedly connected to a bottom plate 21 through a wedge-shaped plate 22.

[0046] Refer to Figures 1 to 7 , as an extended solution, the first bridge 3 and the second bridge 4 are respectively provided above the bridge pier 1, a first installation groove 23 and a second installation groove 26 are respectively provided above the bridge pier 1, the first bridge 3 is fitted and installed inside the first installation groove 23, the second bridge 4 is fitted and installed inside the second installation groove 26, two symmetrically distributed bumpers 2 are provided at the top of the bridge, the two bumpers 2 are respectively located on both sides of the first installation groove 23, and the two bumpers 2 are respectively in fitting connection with both sides of the bottom of the first bridge 3.

[0047] Refer to Figures 3 to 5 andFigures 7 to 8 , adopting such a solution, a number of evenly distributed card slots 6 are provided on both sides of the fixed base 5. The fixed base 5 is fixedly connected to the inside of the top of the bridge pier 1 by concrete pouring. A number of evenly distributed first screw rods 9 are provided on one side of the fixed base 5. Each of the first screw rods 9 penetrates and is inserted into the inside of the bridge pier 1, and each of the first screw rods 9 is threadedly connected to the inside of the fixed base 5.

[0048] Refer to Figures 3 to 5 and Figure 7 , as a specific solution, the side wall of the bridge pier 1 is adhesively connected to the side plate 8. Four first screw rods 9 are provided at both ends of the side plate 8. The four first screw rods 9 are respectively located around the fixed base 5. A fitting plate 10 is fixedly connected or integrally formed at the top of the side plate 8. The number of the fitting plates 10 is two. The two fitting plates 10 are respectively located on one side of the block 2. A groove 11 is formed on the inner side wall of the fitting plate 10, and a number of evenly distributed second screw rods 14 are provided inside the groove 11.

[0049] Refer to Figures 1 to 7 , as a specific solution, the block 2 is integrally formed by reinforced concrete. Two embedding blocks 12 are integrally formed inside the block 2 by concrete. The two embedding blocks 12 are distributed vertically. The adjacent surfaces of the two embedding blocks 12 are respectively fitted and inserted into the inside of the positioning rod 13 for positioning when the embedding blocks 12 are integrally formed. A second screw rod 14 is provided around one side of each of the embedding blocks 12. Each of the second screw rods 14 is threadedly connected to the inside of the embedding block 12.

[0050] Refer to Figure 3 , Figure 5 and Figure 9 , adopting such a solution, a sunken groove 17 is formed at the top of the block 2. The sunken groove 17 is communicated with the through hole 16. The number of the through holes 16 is several. The several through holes 16 are evenly distributed in a circular structure to the edge of the embedding block 12. The number of the through holes 16 is the same as that of the through holes 15. The long screw rod 18 extends to the lower part of the block 2, and the long screw rod 18 is located inside the sunken groove 17.

[0051] Refer to Figures 1 to 4 , adopting such a solution, a cushion plate 27 is provided between the block 2 and the baffle plate 20. The two sides of the cushion plate 27 are respectively adhesively connected to the side walls of the first bridge 3 and the second bridge 4. The cushion plate 27 is fitted and connected to the inside of the first installation groove 23.

[0052] Refer to Figures 2 to 5 and Figure 10, As a specific solution, the baffle 20 is provided with a bottom plate 21 vertically distributed. On one side of the baffle 20, there are four evenly distributed hydraulic telescopic rods 19. The four hydraulic telescopic rods 19 are respectively located around the baffle 20. The four hydraulic telescopic rods 19 are all fixedly connected to the connecting pipe 24. Each connecting pipe 24 is connected to a hydraulic oil pump through an oil delivery pipe 25 to adjust the extrusion force of the hydraulic telescopic rod 19.

[0053] Refer to Figures 2 to 5 and Figure 10 , As a specific solution, there are several evenly distributed wedge-shaped plates 22 between the baffle 20 and the bottom plate 21. The bottom plate 21 is in close connection with the bottom of the second bridge 4. There are several evenly distributed openings 28 at the bottom of the second bridge 4. Each wedge-shaped plate 22 is fitted and connected to the inside of the opening 28.

[0054] As a specific solution, a construction method for a prefabricated and assembled reinforced concrete bridge block, the construction method includes the following steps:

[0055] (1) Pouring the fixed base 5. When the pier 1 is almost finished pouring, place the fixed base 5 in the reinforced concrete formed by the pier 1. After passing a matching round rod through the threaded hole of the first screw 9, complete the pouring of the pier 1 to stably install the fixed base 5 inside the pier 1. The card slots 6 provided on both sides of the fixed base 5 can enable the concrete to be filled smoothly, so that the sleeve 7 above the fixed base 5 is at the same horizontal position as the top surface of the pier 1;

[0056] (2) Pouring the block 2. Pour the block 2 through a formwork. When pouring, first insert a vertical rod matching the through hole 16 into the formwork, and insert a cross rod matching the hydraulic telescopic rod 19 into the formwork. After the concrete is poured, pass the perforation 15 of one of the embedding blocks 12 through the round rod and place it on the concrete surface. Then insert the positioning rod 13 above the embedding block 12 and continue pouring the concrete;

[0057] (3) Positioning the embedding block 12. Pass the other embedding block 12 through the round rod and place it on the concrete surface, so that the embedding block 12 is inserted on the top of the positioning rod 13 to realize the positioning of the two embedding blocks 12. During the pouring process, protect the threaded hole inside the embedding block 12 through a round rod matching the second screw 14. When the pouring is completed, disassemble the formwork, round rod and vertical rod to complete the pouring of the block 2;

[0058] (4) Installation of the stop block 2: Place the cast stop block 2 on the bridge pier 1. After passing the long screw 18 through the through hole 16 and the perforation 15, tighten it inside the sleeve 7 to fix the stop block 2, with the long screw 18 located inside the sunk groove 17. First, pass the second screw 14 through the stop block 2 and tighten it inside the embedded block 12 for stable fixation. Then, attach the side plate 8 to the side wall of the bridge pier 1, pass the first screw 9 through the side plate 8 and the bridge pier 1, and tighten it inside the fixed base 5, with the fitting plate 10 located on the side wall of the stop block 2 and the second screw 14 located inside the groove 11 of the fitting plate 10.

[0059] (5) Installation of the baffle 20: Place the baffle 20, the bottom plate 21, and the wedge plate 22 on the other side of the bridge pier 1, with the bottom plate 21 in contact with the bridge pier 1. Fix the two ends of the hydraulic telescopic rod 19 to the embedded block 12 and the baffle 20 respectively, and install a cushion plate 27 on one side of the baffle 20, with the baffle 20 located inside the second installation groove 26. At this time, the installation of the baffle 20 is completed.

[0060] (6) Installation of the first bridge 3: Lap the first bridge 3 on one side of the bridge pier 1, with the two stop blocks 2 on both sides supporting the two sides of the first bridge 3, and the side wall of the first bridge 3 and the side wall of the stop block 2 in the same vertical position, with the side wall of the first bridge 3 in contact with one side of the cushion plate 27.

[0061] (7) Installation of the second bridge 4: Lap the second bridge 4 on the bottom plate 21, with the opening 28 at the bottom of the second bridge 4 staggered with the wedge plate 22 to achieve the positioning installation of the second bridge 4. When a transverse shear force occurs, the baffle 20 pushes the stop block 2 through the hydraulic telescopic rod 19. At this time, the hydraulic telescopic rod 19 plays an energy absorption role, while leaving enough clearance for the expansion and contraction of the box girder. Moreover, the stop block 2 is stably installed on the bridge pier 1 in a detachable manner, and the side plate 8 and the fitting plate 10 play a limiting role, providing sufficient stability.

[0062] The above are only specific embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A prefabricated assembled reinforced concrete bridge retaining block, the prefabricated assembled reinforced concrete bridge retaining block comprising: A stop block (2) installed on a bridge pier (1), and a first bridge (3) and a second bridge (4) located on both sides of the stop block (2); It is characterized in that: Among them, a fixed base (5) is fitted and installed inside the bridge pier (1), a clamping groove (6) is formed at the edge of the fixed base (5), the top of the fixed base (5) is fixedly connected to a sleeve (7), and the fixed base (5) is fixedly connected to a side plate (8) through a first screw rod (9). The side plate (8) is fixedly connected to a fitting plate (10), the fitting plate (10) is in fitting connection with the side wall of the stop block (2), an embedding block (12) is fitted and installed inside the stop block (2), the embedding block (12) is fixedly connected to the stop block (2) through a second screw rod (14), a through hole (15) is formed at the edge of the embedding block (12), through holes (16) corresponding to the through hole (15) are formed inside the stop block (2), and the through holes (16) are correspondingly arranged above the sleeve (7). A long screw rod (18) is arranged at the top of the stop block (2), the long screw rod (18) is inserted through the through holes (16) and the through hole (15) respectively, and the long screw rod (18) is in threaded connection with the inside of the sleeve (7). A hydraulic telescopic rod (19) is fixedly connected to the side wall of the embedding block (12), the telescopic end of the hydraulic telescopic rod (19) is fixedly connected to a baffle plate (20), and the baffle plate (20) is fixedly connected to a bottom plate (21) through a wedge-shaped plate (22); A first bridge (3) and a second bridge (4) are respectively arranged above the bridge pier (1). A first installation groove (23) and a second installation groove (26) are respectively arranged above the bridge pier (1). The first bridge (3) is fitted and installed inside the first installation groove (23), the second bridge (4) is fitted and installed inside the second installation groove (26). Two symmetrically distributed stop blocks (2) are arranged at the top of the bridge. The two stop blocks (2) are respectively located on both sides of the first installation groove (23), and the two stop blocks (2) are respectively in fitting connection with both sides of the bottom of the first bridge (3); The side wall of the bridge pier (1) is in fitting connection with the side plate (8). Four first screw rods (9) are arranged at both ends of the side plate (8), and the four first screw rods (9) are respectively located around the fixed base (5). The top of the side plate (8) is fixedly connected or integrally formed with a fitting plate (10). The number of the fitting plates (10) is two, and the two fitting plates (10) are respectively located on one side of the stop block (2). A groove (11) is formed in the inner side wall of the fitting plate (10), and a number of uniformly distributed second screw rods (14) are arranged inside the groove (11); The said stop block (2) is integrally formed by reinforced concrete. Inside the stop block (2), two embedding blocks (12) are integrally formed by concrete. The two embedding blocks (12) are distributed vertically. The adjacent surfaces of the two embedding blocks (12) are respectively fitted and inserted into the inside of the positioning rod (13) for positioning when the embedding blocks (12) are integrally formed. Around the periphery of one side of each embedding block (12), a second screw rod (14) is provided, and each second screw rod (14) is threadedly connected to the inside of the embedding block (12); A sunken groove (17) is formed at the top of the stop block (2). The sunken groove (17) communicates with the through holes (16). The number of the through holes (16) is several. The several through holes (16) are evenly distributed in a circular structure to the edge of the embedding block (12). The number of the through holes (16) is the same as that of the perforations (15). The long screw rod (18) extends below the stop block (2), and the long screw rod (18) is located inside the sunken groove (17); A cushion plate (27) is provided between the stop block (2) and the baffle plate (20). The two sides of the cushion plate (27) are respectively attached and connected to the side walls of the first bridge (3) and the second bridge (4). The cushion plate (27) is fitted and connected to the inside of the first installation groove (23); Several uniformly distributed wedge-shaped plates (22) are provided between the baffle plate (20) and the bottom plate (21). The bottom plate (21) is attached and connected to the bottom of the second bridge (4). Several uniformly distributed openings (28) are formed at the bottom of the second bridge (4). Each wedge-shaped plate (22) is fitted and connected to the inside of the opening (28).

2. The prefabricated and assembled reinforced concrete bridge retaining block according to claim 1, wherein: Several uniformly distributed clamping grooves (6) are provided on both sides of the fixed base (5). The fixed base (5) is fixedly connected to the inside of the top end of the bridge pier (1) by concrete pouring. A uniformly distributed first screw rod (9) is provided on one side of the fixed base (5). Each first screw rod (9) penetrates and is inserted into the inside of the bridge pier (1), and each first screw rod (9) is threadedly connected to the inside of the fixed base (5).

3. The prefabricated and assembled reinforced concrete bridge retaining block according to claim 1, wherein: The baffle plate (20) is provided with a vertically distributed bottom plate (21). Four uniformly distributed hydraulic telescopic rods (19) are provided on one side of the baffle plate (20). The four hydraulic telescopic rods (19) are respectively located around the baffle plate (20). The four hydraulic telescopic rods (19) are fixedly connected to the connecting pipe (24). Each connecting pipe (24) is connected to a hydraulic oil pump through an oil delivery pipe (25) to adjust the extrusion force of the hydraulic telescopic rod (19).

4. A construction method of a prefabricated reinforced concrete bridge bumper block according to any one of claims 1-3, characterized in that: The said construction method includes the following steps: (1) Pouring the fixed base (5). When the bridge pier (1) is almost poured, place the fixed base (5) in the reinforced concrete formed by the bridge pier (1). After passing a matching round rod through the threaded hole of the first screw rod (9), complete the pouring and forming of the bridge pier (1) to stably install the fixed base (5) inside the bridge pier (1). The clamping grooves (6) provided on both sides of the fixed base (5) can enable the concrete to be filled smoothly, so that the sleeve (7) above the fixed base (5) is at the same horizontal position as the top surface of the bridge pier (1); (2)Pouring the stop block (2), the stop block (2) is poured through a formwork. When pouring, first insert the vertical rod matching the through hole (16) inside the formwork, and insert the cross rod matching the hydraulic telescopic rod (19) inside the formwork. After the concrete is poured, pass the perforation (15) of one of the embedding blocks (12) through the round rod and place it on the concrete surface. Then, insert the positioning rod (13) above the embedding block (12), and continue to pour the concrete; (3)Positioning the embedding block (12), pass the other embedding block (12) through the round rod and place it on the concrete surface, so that the embedding block (12) is inserted on the top of the positioning rod (13) to realize the positioning of the two embedding blocks (12). During the pouring process, protect the threaded hole inside the embedding block (12) through the round rod matching the second screw rod (14). When the pouring is completed, remove the formwork, round rod and vertical rod to complete the pouring of the stop block (2); (4)Installing the stop block (2), place the poured stop block (2) on the bridge pier (1), and pass the long screw rod (18) through the through hole (16) and the perforation (15), and then tighten it inside the sleeve (7) to realize the fixation of the stop block (2), so that the long screw rod (18) is located inside the sinking groove (17). First, pass the second screw rod (14) through the stop block (2) and tighten it inside the embedding block (12) to achieve stable fixation. Then, attach the side plate (8) to the side wall of the bridge pier (1), and pass the first screw rod (9) through the side plate (8) and the bridge pier (1), and tighten it inside the fixed base (5), so that the fitting plate (10) is located on the side wall of the stop block (2), and the second screw rod (14) is located inside the groove (11) of the fitting plate (10); (5)Installing the baffle plate (20), place the baffle plate (20), the bottom plate (21) and the wedge plate (22) on the other side of the bridge pier (1), so that the bottom plate (21) fits with the bridge pier (1). Fix the two ends of the hydraulic telescopic rod (19) to the embedding block (12) and the baffle plate (20) respectively, and install a cushion plate (27) on one side of the baffle plate (20), so that the baffle plate (20) is located inside the second installation groove (26). At this time, the installation of the baffle plate (20) is completed; (6)Installing the first bridge (3), lap the first bridge (3) on one side of the bridge pier (1), and make the two stop blocks (2) support both sides of the first bridge (3), and make the side wall of the first bridge (3) and the side wall of the stop block (2) be in the same vertical position, and make the side wall of the first bridge (3) contact with one side of the cushion plate (27); (7)Installing the second bridge (4), lap the second bridge (4) on the bottom plate (21), so that the opening (28) at the bottom of the second bridge (4) and the wedge plate (22) are staggered to realize the positioning installation of the second bridge (4). When there is a transverse shear force, the baffle plate (20) pushes the stop block (2) through the hydraulic telescopic rod (19). At this time, the hydraulic telescopic rod (19) plays an energy absorption role, and at the same time, there is enough clearance for the expansion and contraction of the box girder. And the stop block (2) is stably installed on the bridge pier (1) in a detachable manner, and the side plate (8) and the fitting plate (10) are used to play a limiting role, which can achieve sufficient stability.

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