Shock-resistant bridge structure of floodway

Abstract

The invention belongs to the technical field of bridges, and discloses a flood discharge channel anti-impact bridge structure which comprises at least three bridge piers, supporting seats are fixedly mounted at the top ends of the bridge piers, a bridge floor is mounted at the top ends of the supporting seats, and longitudinal clamping grooves are formed in the positions, close to the bottom ends, of the left and right sides of the bridge piers. Hydraulic telescopic rods are fixedly mounted at the bottom ends of inner cavities of the longitudinal clamping grooves, and the outer side faces of the bridge piers are movably sleeved with linkage assemblies. Through impact of water flow and linkage of the linkage assembly, the overall automatic descending of the flow dividing assembly is achieved, so that the water flow can be guided into the flow dividing box through the guide square pipe and guided out through the multiple flow dividing holes in the rear end, the number of the flow dividing holes is increased through the longitudinal space, the water flow impact is reduced through upward flowing of the water flow, and the flow dividing efficiency is improved. And meanwhile, water flow is quickly shunted by increasing the number of the shunting holes, impact of the water flow on the pier is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of bridges, and in particular relates to an impact-resistant bridge structure for a flood discharge channel. Background Art

[0002] When flood flows through a bridge, it will generate dynamic impact force on structures such as piers and main beams, and its magnitude is positively correlated with the flow rate. Horizontal thrust may cause bearing sliding or shear failure, while vertical buoyancy may offset the deadweight of the structure, causing the beam to overturn or shift. Since the bridge structure is mainly built on the water surface through the piers at the bottom, some floods can be discharged through the distance between the piers, but the piers themselves will also be impacted by the flood, so how to discharge the flood and resist the impact is crucial.

[0003] In order to cope with the impact of floods, traditional bridge structures usually have holes in the piers. Appropriate holes are used to disperse the water flow and complete the diversion process. This anti-impact process will have a certain impact on the strength of the piers themselves. At the same time, the position between the two holes is prone to collapse due to long-term erosion, and the overall strength is low.

[0004] Some bridges are equipped with diversion components to divert floods, but these diversion components will also guide the water flow when there is no flood and no need to discharge flood water. This will cause the direction of the water flow near the bridge piers to change to a certain extent, and the diversion components cannot be adaptively adjusted according to the flood flow, so improvement is urgently needed. Summary of the invention

[0005] The object of the present invention is to provide a spillway impact-resistant bridge structure to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flood discharge channel impact-resistant bridge structure, comprising piers, the number of the piers is not less than three, the tops of the piers are fixedly installed with support seats, the tops of the support seats are installed with bridge decks, longitudinal slots are opened on the left and right sides of the piers near the bottom, a hydraulic telescopic rod is fixedly installed at the bottom of the inner cavity of the longitudinal slot, a linkage component is movably sleeved on the outer side of the pier, transverse guide rails are fixedly installed on the left and right sides of the outer side of the pier near the top, the top of the linkage component is movably clamped with the transverse guide rails, the left and right sides of the linkage component near the bottom are fixedly installed with diversion components, an impact seat is fixedly installed on the front of the linkage component, and a pressure box is fixedly installed on the front of the impact seat near the bottom; When the pressure box is in the flood discharge state, the impact force on the pressure box increases, the hydraulic telescopic rod is compressed and acts on the linkage component, and the diversion component is driven downward by the linkage component, so that the flood is dynamically diverted and the diversion range is expanded.

[0007] In the initial state, the distance between the pressure tank and the pier is at the maximum value, and the diversion component is at the highest point. At this time, the linkage component is also in the initial state. At this time, the entire bridge is in a normal state and can withstand normal water flow.

[0008] As a further technical solution of the present invention, a water collection port is provided in the middle of the front side of the pressure box, and the left and right sides of the pressure box are fixedly connected with guide square tubes.

[0009] When the water environment is in a normal flow state, the water flow between the two piers can flow out directly through the gap between the two piers, while the water flow in front of the pier can impact the pressure tank. Since the flow rate is small at this time, the impact of the water flow on the pressure tank is small. Most of the water flow can be injected into the interior of the pressure tank through the water collection port and discharged through the guide square pipes at both ends of the pressure tank. At this time, the water flow can be discharged from both ends of the pier, reducing the impact on the pier.

[0010] As a further technical solution of the present invention, the linkage assembly includes a sleeve, which is located on the outer side of the pier, and longitudinal blocks are fixedly installed on the left and right sides of the inner side of the sleeve. The sleeve is movably connected between the longitudinal block and the longitudinal slot, and the bottom end of the longitudinal block is connected to the top of the hydraulic telescopic rod.

[0011] As a further technical solution of the present invention, the linkage assembly also includes a linkage frame located at the top, the front side of the linkage frame is connected to the impact seat, and transverse clamping blocks are fixedly installed on the left and right sides of the linkage frame near the rear end. The linkage frame is movably connected to the transverse guide rail through the transverse clamping blocks, and the linkage frame moves forward and backward relative to the transverse guide rail.

[0012] As a further technical solution of the present invention, second fixed seats are fixedly installed on both sides of the front end of the ferrule, first fixed seats are fixedly installed on both sides of the inner side of the linkage frame, and a linkage rod is movably connected between the first fixed seat and the second fixed seat.

[0013] When encountering flood discharge, the water flow rate per unit time increases rapidly, and the impact on the pressure box continues to increase. At this time, the pressure box can be pushed to move toward the pier as a whole, and the linkage frame can be driven to move toward the pier. At this time, the linkage frame can move relative to the transverse guide rail, and the linkage rod will deflect obliquely downward, that is, a downward thrust is applied to the sleeve. At this time, the sleeve can move downward relative to the longitudinal slot through the action of the longitudinal clamping block. At this time, the hydraulic telescopic rod is compressed. When the sleeve moves downward as a whole, the bottom end of the outer side of the pier can be scraped to automatically remove the adhesion on the outer side of the pier and reduce corrosion to the pier.

[0014] As a further technical solution of the present invention, the diversion assembly includes a diversion box, a water inlet is opened at the front end of the diversion box near the bottom, guide plates are fixedly installed on the left and right sides of the front end of the diversion box, an extension frame is fixedly installed on one side of the diversion box, and the diversion box is connected to the ferrule through the extension frame.

[0015] As a further technical solution of the present invention, diversion holes are equidistantly provided at the rear end of the diversion box, a limit plate is movably connected to the inside of the diversion box, and a movable rod located inside the diversion box is fixedly installed on the top of the limit plate.

[0016] As a further technical solution of the present invention, the top end of the movable rod passes through the top end of the diverter box and is fixedly connected to a mounting plate, and the outer side surface of the movable rod is movably sleeved with a limit spring, and the upper and lower ends of the limit spring are respectively connected to the bottom end of the mounting plate and the top end of the diverter box.

[0017] As a further technical solution of the present invention, when the distance between the pressure box and the bridge pier is at the minimum value, the diverter box is at the lowest point and the water inlet and the guide square pipe correspond to each other.

[0018] As a further technical solution of the present invention, when the limit spring is in an initial state, the mounting plate and the limit plate are at the lowest point, and the limit plate is located just above the top end of the water inlet opening.

[0019] When the ferrule moves downward, it can drive the diversion components on both sides to move downward synchronously. When the ferrule drops to the lowest point, the diversion box also drops to the lowest point, and the water inlet and the guide square tube meet and correspond. The water flow exported through the guide square tube enters the interior of the diversion box. As the water flow increases, the limit plate can move upward and drive the movable rod to move upward synchronously. At this time, the limit spring is stretched and drives the installation plate to move upward. At this time, the water flow can be exported through the multiple diversion holes at the rear end of the diversion box, completing the diversion and export process of the water flow. At the same time, the laser rangefinder located at the bottom of the mounting plate can monitor the distance between the mounting plate and the diversion box in real time. When the distance is greater than the threshold, it means that the water flow is too large, and it is in a warning signal and an alarm is issued.

[0020] By utilizing the cooperation between the diversion component and the linkage component, through the impact of the water flow, and through the linkage of the linkage component, the overall automatic descent of the diversion component is achieved, so that the water flow can be introduced into the interior of the diversion box through the guide square tube, and exported through the multiple diversion holes at the rear end. The number of diversion holes is increased by utilizing the longitudinal space, and the impact of the water flow is reduced by the upward flow of water. At the same time, the rapid diversion of the water flow is achieved by increasing the number of diversion holes, thereby reducing the impact of the water flow on the bridge piers and improving the service life.

[0021] When the water environment returns to normal flow, the water flow no longer exerts a large pressure on the pressure box, that is, the hydraulic telescopic rod can be automatically reset, the ferrule moves upward, and drives the linkage frame to move forward, and the pressure box moves forward accordingly. When the ferrule moves upward, it can synchronously drive the two diversion components to move upward. At this time, the diversion components move away from the water surface, and the water flow is re-derived through the guide square tube to complete the dynamic adjustment process.

[0022] By utilizing the coordination between the linkage component and the diversion component, and taking advantage of the different impact forces of water flow under different flow environments, the upper and lower positions of the diversion component can be dynamically adjusted to achieve rapid diversion when the flow is large and reduce water flow impact, while normal diversion can be restored when the flow is small to reduce interference with the direction of the water flow. Strong impact resistance can be achieved through the dynamic adjustment process.

[0023] The beneficial effects of the present invention are as follows: (1) The present invention utilizes the cooperation between the diverter assembly and the linkage assembly, through the impact of the water flow and the linkage of the linkage assembly, to achieve the overall automatic descent of the diverter assembly, so that the water flow can be introduced into the interior of the diverter box through the guide square tube and discharged through the multiple diverter holes at the rear end. The number of diverter holes is increased by utilizing the longitudinal space, and the impact of the water flow is reduced by the upward flow of the water flow. At the same time, the number of diverter holes is increased to achieve rapid diversion of the water flow, thereby reducing the impact of the water flow on the bridge pier and improving the service life.

[0024] (2) The present invention utilizes the cooperation between the linkage component and the diversion component, and utilizes the different impact forces of water flow under different flow environments to dynamically adjust the upper and lower positions of the diversion component, so that when the flow rate is large, rapid diversion can be performed to reduce the impact of water flow, and when the flow rate is small, normal diversion can be restored to reduce interference with the direction of water flow. Through the dynamic adjustment process, strong impact resistance is achieved.

[0025] (3) The present invention pushes the pressure box as a whole to move toward the pier, and drives the linkage frame to move toward the pier. At this time, the linkage frame can move relative to the transverse guide rail, and the linkage rod is deflected obliquely downward, that is, a downward thrust is applied to the clamping sleeve. At this time, the clamping sleeve can move downward relative to the longitudinal slot through the action of the longitudinal clamping block. At this time, the hydraulic telescopic rod is compressed. When the clamping sleeve moves downward as a whole, the bottom end of the outer side surface of the pier can be scraped to automatically remove the adhesion on the outer side surface of the pier, thereby reducing corrosion to the pier. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the coordination between the bridge pier and the bridge deck structure of the present invention; Figure 3It is a schematic diagram of the present invention in a state where the bridge piers and the bridge deck are hidden; Figure 4 It is an exploded schematic diagram of the transverse guide rail and linkage assembly structure of the present invention; Figure 5 It is a separate schematic diagram of the linkage assembly structure of the present invention; Figure 6 It is a cross-sectional schematic diagram of the internal structure of the pressure box of the present invention; Figure 7 It is a separate schematic diagram of the structure of the flow diversion component of the present invention; Figure 8 It is a cross-sectional schematic diagram of the internal structure of the diversion component of the present invention.

[0027] In the figure: 1, bridge pier; 2, support seat; 3, bridge deck; 4, longitudinal slot; 5, hydraulic telescopic rod; 6, transverse guide rail; 7, linkage assembly; 701, sleeve; 702, longitudinal block; 703, linkage frame; 704, transverse block; 705, first fixed seat; 706, second fixed seat; 707, linkage rod; 8, impact seat; 9, pressure box; 10, water collection port; 11, guide square tube; 12, diversion assembly; 121, diversion box; 122, water inlet; 123, guide plate; 124, diversion hole; 125, limit plate; 126, movable rod; 127, limit spring; 128, mounting plate; 129, laser rangefinder; 1210, extension frame. DETAILED DESCRIPTION

[0028] 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.

[0029] like Figures 1 to 8 As shown, in an embodiment of the present invention, a flood discharge channel impact-resistant bridge structure comprises a pier 1, the number of the piers 1 is not less than three, the top of each pier 1 is fixedly installed with a support seat 2, the top of the support seat 2 is installed with a bridge deck 3, longitudinal slots 4 are provided on both sides of the pier 1 and near the bottom, a hydraulic telescopic rod 5 is fixedly installed at the bottom of the inner cavity of the longitudinal slot 4, a linkage component 7 is movably sleeved on the outer side of the pier 1, transverse guide rails 6 are fixedly installed on the left and right sides of the outer side of the pier 1 near the top, the top of the linkage component 7 is movably clamped with the transverse guide rail 6, the left and right sides of the linkage component 7 near the bottom are fixedly installed with a diversion component 12, an impact seat 8 is fixedly installed on the front of the linkage component 7, and a pressure box 9 is fixedly installed on the front of the impact seat 8 near the bottom; When the pressure box 9 is in the flood discharge state, the impact force on the pressure box 9 increases, the hydraulic telescopic rod 5 is compressed and acts on the linkage component 7, and the diversion component 12 is driven downward by the linkage component 7, so that the flood is dynamically diverted and the diversion range is expanded.

[0030] In the initial state, the distance between the pressure box 9 and the pier 1 is at the maximum value, and the diversion component 12 is at the highest point. At this time, the linkage component 7 is also in the initial state. At this time, the entire bridge is in a normal state and can withstand normal water flow.

[0031] like Figure 1 and Figure 4 as well as Figure 6 As shown, a water collection port 10 is provided in the middle of the front side of the pressure-bearing box 9 , and guide square tubes 11 are fixedly connected to the left and right sides of the pressure-bearing box 9 .

[0032] When the water environment is in a normal flow state, the water flow between the two piers 1 can flow out directly through the gap between the two piers 1, and the water flow in front of the pier 1 can impact the pressure tank 9. Since the flow rate is small at this time, the impact of the water flow on the pressure tank 9 is small. Most of the water flow can be injected into the interior of the pressure tank 9 through the water collection port 10 and discharged through the guide square tubes 11 at both ends of the pressure tank 9. At this time, the water flow can be discharged from both ends of the pier 1, reducing the impact on the pier 1.

[0033] like Figure 1 and Figure 3 as well as Figure 4 and Figure 5 As shown, the linkage component 7 includes a sleeve 701, which is located on the outer side of the pier 1, and longitudinal blocks 702 are fixedly installed on the left and right sides of the inner side of the sleeve 701. The sleeve 701 is movably connected with the longitudinal slot 4 through the longitudinal block 702, and the bottom end of the longitudinal block 702 is connected to the top of the hydraulic telescopic rod 5. The linkage component 7 also includes a linkage frame 703 located at the top, and the front of the linkage frame 703 is connected to the impact seat 8. The left and right sides of the linkage frame 703 near the rear end are fixedly installed with transverse blocks 704, and the linkage frame 703 is movably connected with the transverse guide rail 6 through the transverse block 704. The linkage frame 703 moves forward and backward relative to the transverse guide rail 6. The left and right sides of the front end of the sleeve 701 are fixedly installed with second fixed seats 706, and the left and right sides of the inner side of the linkage frame 703 are fixedly installed with first fixed seats 705. A linkage rod 707 is movably connected between the first fixed seat 705 and the second fixed seat 706.

[0034] When encountering flood discharge, the water flow rate per unit time increases rapidly, and the impact on the pressure box 9 continues to increase. At this time, the pressure box 9 can be pushed to move toward the direction of the pier 1 as a whole, and the linkage frame 703 can be driven to move toward the direction close to the pier 1. At this time, the linkage frame 703 can be displaced relative to the transverse guide rail 6, and the linkage rod 707 is deflected obliquely downward, that is, a downward thrust is applied to the sleeve 701. At this time, the sleeve 701 can be displaced downward relative to the longitudinal slot 4 through the action of the longitudinal clamping block 702. At this time, the hydraulic telescopic rod 5 is compressed accordingly. When the sleeve 701 moves downward as a whole, the bottom end of the outer side surface of the pier 1 can be scraped to automatically remove the adhesion on the outer side surface of the pier 1 and reduce corrosion to the pier 1.

[0035] like Figure 1 and Figure 3 as well as Figure 7 and Figure 8 As shown, the diverter assembly 12 includes a diverter box 121, a water inlet 122 is provided at a position near the bottom of the front end of the diverter box 121, guide plates 123 are fixedly installed on the left and right sides of the front end of the diverter box 121, an extension frame 1210 is fixedly installed on one side of the diverter box 121, the diverter box 121 is connected to the ferrule 701 through the extension frame 1210, and diverter holes 124 are equidistantly provided at the rear end of the diverter box 121, the internal movable card of the diverter box 121 is connected to a limit plate 125, and a movable rod 126 located inside the diverter box 121 is fixedly installed on the top of the limit plate 125. The top end passes through the top end of the diverter box 121 and is fixedly connected with a mounting plate 128. The outer side surface of the movable rod 126 is movably sleeved with a limiting spring 127. The upper and lower ends of the limiting spring 127 are respectively connected to the bottom end of the mounting plate 128 and the top end of the diverter box 121. When the distance between the pressure box 9 and the pier 1 is the minimum, the diverter box 121 is at the lowest point and the water inlet 122 corresponds to the guide square tube 11. When the limiting spring 127 is in the initial state, the mounting plate 128 and the limiting plate 125 are at the lowest point, and the limiting plate 125 is just above the top end of the opening of the water inlet 122.

[0036] Embodiment: When the ferrule 701 moves downward, the diverter components 12 on both sides can be driven to move downward synchronously. When the ferrule 701 drops to the lowest point, the diverter box 121 also drops to the lowest point, and the water inlet 122 corresponds to the guide square tube 11. The water flow guided through the guide square tube 11 enters the interior of the diverter box 121. As the water flow increases, the limit plate 125 can move upward and drive the movable rod 126 to move upward synchronously. At this time, the limit spring 127 is stretched and drives the mounting plate 128 to move upward. At this time, the water flow can be guided out through the multiple diverter holes 124 at the rear end of the diverter box 121, completing the diverter and guide process of the water flow. At the same time, the laser rangefinder 129 located at the bottom of the mounting plate 128 can monitor the distance between the mounting plate 128 and the diversion box 121 in real time. When the distance is greater than the threshold, it means that the water flow is too large, and it is in a warning signal and an alarm is issued.

[0037] By utilizing the cooperation between the diverter assembly 12 and the linkage assembly 7, through the impact of the water flow, and through the linkage of the linkage assembly 7, the overall automatic descent of the diverter assembly 12 is achieved, so that the water flow can be introduced into the interior of the diverter box 121 through the guide square tube 11, and is exported through the multiple diverter holes 124 at the rear end. By utilizing the longitudinal space to increase the number of diverter holes 124, and through the upward flow of water to reduce the impact of the water flow, at the same time, by increasing the number of diverter holes 124, the rapid diversion of the water flow is achieved, thereby reducing the impact of the water flow on the pier 1 and improving the service life.

[0038] Embodiment: When the water environment returns to normal flow, the water flow no longer exerts a large pressure on the pressure box 9, that is, the hydraulic telescopic rod 5 can be automatically reset, and the sleeve 701 moves upward, and drives the linkage frame 703 to move forward, and the pressure box 9 moves forward accordingly. When the sleeve 701 moves upward, it can synchronously drive the two diversion components 12 to move upward. At this time, the diversion components 12 move away from the water surface, and the water flow is re-derived through the guide square tube 11 to complete the dynamic adjustment process.

[0039] By utilizing the cooperation between the linkage component 7 and the diversion component 12, and utilizing the different impact forces of the water flow under different flow environments, the upper and lower positions of the diversion component 12 can be dynamically adjusted to achieve rapid diversion when the flow is large and reduce the impact of the water flow, while normal diversion can be restored when the flow is small to reduce interference with the direction of the water flow. Through the dynamic adjustment process, strong impact resistance can be achieved.

[0040] Working principle and usage process: When the water environment is in a normal flow state, the water flow between the two piers 1 can flow out directly through the gap between the two piers 1, and the water flow in front of the pier 1 can impact the pressure tank 9. Since the flow rate is small at this time, the impact of the water flow on the pressure tank 9 is small. Most of the water flow can be injected into the interior of the pressure tank 9 through the water collection port 10 and discharged through the guide square pipes 11 at both ends of the pressure tank 9. At this time, the water flow can be discharged from both ends of the pier 1, reducing the impact on the pier 1. When encountering flood discharge, the water flow rate per unit time increases rapidly, and the impact on the pressure box 9 continues to increase. At this time, the pressure box 9 can be pushed to move toward the direction of the bridge pier 1 as a whole, and the linkage frame 703 can be driven to move toward the direction close to the bridge pier 1. At this time, the linkage frame 703 can move relative to the transverse guide rail 6, and the linkage rod 707 is deflected obliquely downward, that is, a downward thrust is applied to the clamping sleeve 701. At this time, the clamping sleeve 701 can move downward relative to the longitudinal clamping groove 4 through the action of the longitudinal clamping block 702. At this time, the hydraulic telescopic rod 5 is compressed. When the clamping sleeve 701 moves downward as a whole, the bottom end of the outer side surface of the bridge pier 1 can be scraped to automatically remove the adhesion on the outer side surface of the bridge pier 1 and reduce the corrosion of the bridge pier 1. When the ferrule 701 moves downward, the diverter components 12 on both sides can be driven to move downward synchronously. When the ferrule 701 drops to the lowest point, the diverter box 121 also drops to the lowest point, and the water inlet 122 corresponds to the guide square tube 11. The water flow guided by the guide square tube 11 enters the interior of the diverter box 121. As the water flow increases, the limit plate 125 can move upward and drive the movable rod 126 to move upward synchronously. At this time, the limit spring 127 is stretched and drives the mounting plate 128 to move upward. At this time, the water flow can be guided out through the multiple diverter holes 124 at the rear end of the diverter box 121, completing the diverter and guide process of the water flow. At the same time, the laser rangefinder 129 located at the bottom of the mounting plate 128 can monitor the distance between the mounting plate 128 and the diversion box 121 in real time. When the distance is greater than the threshold, it means that the water flow is too large and it is in a warning signal, and an alarm is issued; When the water environment returns to normal flow, the water flow no longer exerts a large pressure on the pressure box 9, that is, the hydraulic telescopic rod 5 can be automatically reset, and the sleeve 701 moves upward, driving the linkage frame 703 to move forward, and the pressure box 9 moves forward accordingly. When the sleeve 701 moves upward, it can synchronously drive the two diversion components 12 to move upward. At this time, the diversion components 12 move away from the water surface, and the water flow is re-derived through the guide square tube 11 to complete the dynamic adjustment process.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spillway impact-resistant bridge structure, comprising a bridge pier (1), characterized in that: The number of the bridge piers (1) is not less than three, the top of each of the bridge piers (1) is fixedly mounted with a support seat (2), the top of each of the support seats (2) is mounted with a bridge deck (3), longitudinal slots (4) are provided on both sides of the bridge pier (1) and near the bottom, a hydraulic telescopic rod (5) is fixedly mounted at the bottom of the inner cavity of the longitudinal slot (4), a linkage assembly (7) is movably sleeved on the outer side surface of the bridge pier (1), transverse guide rails (6) are fixedly mounted on both sides of the outer side surface of the bridge pier (1) near the top, the top of the linkage assembly (7) is movably clamped with the transverse guide rails (6), a diversion assembly (12) is fixedly mounted on both sides of the linkage assembly (7) near the bottom, an impact seat (8) is fixedly mounted on the front of the linkage assembly (7), and a pressure box (9) is fixedly mounted on the front of the impact seat (8) near the bottom; When the pressure box (9) is in a flood discharge state, the impact force on the pressure box (9) increases, the hydraulic telescopic rod (5) is compressed and acts on the linkage component (7), and the diversion component (12) is driven downward by the linkage component (7), so that the flood is dynamically diverted and the diversion range is expanded.

2. The spillway impact-resistant bridge structure according to claim 1, characterized in that: A water collection port (10) is provided in the middle of the front side of the pressure-bearing box (9), and guide square tubes (11) are fixedly connected to the left and right sides of the pressure-bearing box (9).

3. The spillway impact-resistant bridge structure according to claim 1, characterized in that: The linkage assembly (7) comprises a clamping sleeve (701), the clamping sleeve (701) being located on the outer side surface of the pier (1), and longitudinal clamping blocks (702) being fixedly mounted on both left and right sides of the inner side surface of the clamping sleeve (701), the clamping sleeve (701) being movably clamped with the longitudinal clamping block (702) and the longitudinal clamping groove (4), and the bottom end of the longitudinal clamping block (702) being connected to the top end of the hydraulic telescopic rod (5).

4. The spillway impact-resistant bridge structure according to claim 3, characterized in that: The linkage assembly (7) further comprises a linkage frame (703) located at the top, the front face of the linkage frame (703) being connected to the impact seat (8), and transverse clamping blocks (704) being fixedly mounted on both left and right sides of the linkage frame (703) near the rear end, the linkage frame (703) being movably clamped with the transverse guide rail (6) via the transverse clamping blocks (704), and the linkage frame (703) being displaceable forward and backward relative to the transverse guide rail (6).

5. The spillway impact-resistant bridge structure according to claim 4, characterized in that: A second fixing seat (706) is fixedly installed on both the left and right sides of the front end of the ferrule (701), a first fixing seat (705) is fixedly installed on both the left and right sides of the inner side of the linkage frame (703), and a linkage rod (707) is movably connected between the first fixing seat (705) and the second fixing seat (706).

6. The spillway impact-resistant bridge structure according to claim 5, characterized in that: The flow diversion assembly (12) comprises a flow diversion box (121); a water inlet (122) is provided at a position near the bottom of the front end of the flow diversion box (121); guide plates (123) are fixedly mounted on both left and right sides of the front end of the flow diversion box (121); an extension frame (1210) is fixedly mounted on one side of the flow diversion box (121); and the flow diversion box (121) is connected to the ferrule (701) via the extension frame (1210).

7. The spillway impact-resistant bridge structure according to claim 6, characterized in that: The rear end of the diversion box (121) is provided with diversion holes (124) at equal distances, the interior of the diversion box (121) is movably engaged with a limit plate (125), and a movable rod (126) located inside the diversion box (121) is fixedly mounted on the top end of the limit plate (125).

8. The spillway impact-resistant bridge structure according to claim 7, characterized in that: The top end of the movable rod (126) passes through the top end of the shunt box (121) and is fixedly connected to a mounting plate (128); the outer side surface of the movable rod (126) is movably sleeved with a limit spring (127); the upper and lower ends of the limit spring (127) are respectively connected to the bottom end of the mounting plate (128) and the top end of the shunt box (121).

9. The spillway impact-resistant bridge structure according to claim 8, characterized in that: When the distance between the pressure-bearing box (9) and the bridge pier (1) is at a minimum value, the diverter box (121) is at the lowest point and the water inlet (122) and the guide square tube (11) correspond to each other.

10. The spillway impact-resistant bridge structure according to claim 9, characterized in that: When the limit spring (127) is in an initial state, the mounting plate (128) and the limit plate (125) are at the lowest point, and the limit plate (125) is located just above the top end of the opening of the water inlet (122).

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