Safety device for protecting bridge body from flood

Abstract

The utility model discloses a safety device for protecting a bridge body from flood, and belongs to the technical field of bridge protection. Comprising a bridge body and a floating support sleeve assembled and installed outside the bridge body, the floating support sleeve comprises four flat protective plates and four arc-shaped protective plates, the flat protective plates and the arc-shaped protective plates are assembled and spliced to form an oval structure, and the floating support sleeve capable of being spliced is arranged outside the bridge body in a rapid assembly type limiting sleeve mode. A plurality of floating plates with buffering and energy dissipation functions are arranged on the upstream cambered surface of the floating supporting sleeve, a plurality of anti-collision cylinders are arranged on the side face and the downstream face, the anti-collision protection and auxiliary floating effects are achieved, the floating supporting sleeve ascends along with the water surface, the angle of a second inhaul cable is increased, a first inhaul cable can be dragged, the pulling force of the first inhaul cable is gradually increased, and the anti-collision effect is achieved. Therefore, the stable supporting effect of the floating supporting sleeve is provided, a complete bridge body flood control safety system is formed, and compared with a traditional flood control device with a single function, the safety of a bridge body in flood can be protected more comprehensively and effectively.

Description

Technical Field

[0001] This application relates to the field of bridge protection technology, and more specifically, to a safety device for protecting bridge structures from flooding. Background Technology

[0002] In cross-river bridge engineering, the impact threat of floods on bridge piers has always been a problem that urgently needs to be solved. Traditional bridge flood control measures only focus on physical barriers and reinforcement. When floods come, especially when the water level is high, the water flow can still submerge the physical protection mechanisms, causing the bridge piers to be directly impacted by the water flow, resulting in unstable foundations and even damage to the bridge structure. In addition, most existing physical protection mechanisms are complex in structure, have high installation and maintenance costs, and their stability and safety in floods need to be improved. In view of this, we propose a safety device to protect the bridge structure from floods. Summary of the Invention

[0003] Technical problems to be solved

[0004] The purpose of this application is to provide a safety device for protecting bridge structures from flooding, solving the technical problems mentioned in the background art. It enables the rapid assembly and limiting of a modular floating support sleeve onto the outside of the bridge structure. By setting multiple floating plates with buffer energy dissipation on the water-facing arc surface of the floating support sleeve, and multiple anti-collision cylinders on the sides and backwater surfaces, it achieves anti-collision protection and auxiliary floating effects. As the water level rises, the angle of the second cable increases, tightening the first cable and gradually increasing its tension, thus providing stable support for the floating support sleeve and forming a complete bridge flood control safety system. Compared with traditional single-function flood control devices, it can more comprehensively and effectively protect the bridge structure's safety in floods. The trapezoidal design of the floating plates (wider at the top and narrower at the bottom) and the flow guide channels on the surface cleverly utilize water flow characteristics, reducing the frontal impact of water flow on the baffle and improving the baffle's protective effect and stability.

[0005] Technical solution

[0006] This application provides a safety device for protecting a bridge structure from flooding. The device includes a bridge structure and a floating support sleeve installed on the outside of the bridge structure. The floating support sleeve comprises four flat protective plates and four arc-shaped protective plates, assembled into an elliptical structure. It also includes:

[0007] Anchor bolts are provided, with two anchor bolts movably inserted into both the flat and curved protective plates, and the bottom ends of the anchor bolts extending into the stable soil layer of the riverbed.

[0008] The floating support sleeve is provided with multiple anti-collision cylinders along its side and backwater surface. Both ends of the anti-collision cylinder are rotatably mounted with rotating blocks via shafts, and the rotating blocks are fixedly connected to the floating support sleeve.

[0009] The tensioning mechanism includes a first cable and a second cable. A guide ring is fixedly provided in the middle of the first cable. The upper ends of the first cable and the second cable are limited and installed on the arc-shaped protective plate on the backwater side. The second cable moves through the guide ring and is anchored at the bottom of the bridge body. The bottom end of the second cable is anchored in the stable soil layer of the riverbed.

[0010] The anti-impact mechanism includes several floating plates, which are evenly distributed along the water-facing surface of the floating support sleeve. A hydraulic damper and a support plate are rotatably hinged between the back of the floating plate and the arc-shaped protective plate on the water-facing surface.

[0011] By adopting the above technical solution, a floating support sleeve with an elliptical structure is assembled from four flat guard plates and four arc-shaped guard plates. This floating support sleeve is fitted onto the outside of the bridge structure and mutually restrained using bolts. The floating support sleeve, together with multiple anti-collision cylinders, can float on the water surface. Multiple anchor rods are inserted along the elliptical structure of the floating support sleeve, and all anchor rods are deeply inserted into the stable soil layer of the riverbed, allowing the entire floating support sleeve to float with the water surface and stably rise and fall along the anchor rods. At each of the four corners of the floating support sleeve is a tensioning mechanism consisting of a first cable and a second cable. The second cable movably passes through a guide ring and its bottom end is anchored to the bottom of the bridge structure, forming a triangular structure. The second cable is anchored at its bottom in the stable soil layer of the riverbed. As the water level rises, the angle of the second cable increases with the rise of the floating support sleeve, which can tighten the first cable and gradually increase the tension of the first cable, thus providing a stable support effect for the floating support sleeve. At the water-facing end of the floating support sleeve, multiple floating plates are set along the arc surface. Each floating plate is rotatably hinged to a hydraulic damper and a support plate between itself and the arc-shaped protective plate on the water-facing side. Thus, when floods hit, the floating plates and hydraulic dampers can achieve a buffering and energy dissipation effect. In addition, multiple anti-collision cylinders set on the side of the floating support sleeve can effectively prevent collisions, thereby avoiding the impact of floating foreign objects and effectively ensuring the safety of the bridge.

[0012] Optionally, the inner walls of both the flat guard plate and the arc-shaped guard plate are integrally fixed with multiple wear-resistant strips, forming multiple elliptical structures. Both ends of the flat guard plate and the arc-shaped guard plate are provided with two rectangular grooves, and the inner walls of the rectangular grooves are provided with through holes for threaded installation of locking bolts.

[0013] By adopting the above technical solution, wear-resistant strips are set on the inner walls of the flat and curved protective plates. As the water level changes, the curved protective plate slides along the bridge body and can be treated with wear-resistant strips. Adjacent flat protective plates are limited and fixed by locking bolts, and adjacent curved protective plates are limited and fixed by locking bolts. Similarly, flat and curved protective plates are also limited and fixed by locking bolts.

[0014] Optionally, both the flat guard plate and the arc-shaped guard plate are provided with two through holes, and the anchor rod moves through the through holes.

[0015] By adopting the above technical solution, an anchor rod is movably inserted into both the flat and curved protective plates, which limits the flat and curved protective plates on the horizontal plane, while the flat and curved protective plates can slide along the corresponding anchor rods in the vertical direction.

[0016] Optionally, both the flat guard plate and the curved guard plate are made of lightweight, high-strength carbon fiber composite material, and the cross-sectional thickness is CM.

[0017] By adopting the above technical solutions, both the flat guard plate and the curved guard plate are made of lightweight, high-strength carbon fiber composite material, which can maintain the stability and strength of the structure.

[0018] Optionally, the anti-collision cylinder is made of plastic and has a central hole for rotatably mounting a rotating shaft, the two ends of which are rotatably connected to a rotating block.

[0019] By adopting the above technical solution, reflective warning stickers can be affixed to the anti-collision cylinder to achieve the purpose of reflective warning. Furthermore, by rotating the central shaft and two rotating blocks, the impact direction can be changed during an impact.

[0020] Optionally, the upper ends of the first and second cables are rotatably connected to connecting seats via hinges. The connecting seats are fixedly mounted on the arc-shaped protective plate installed on the backwater side, and the second cable is distributed in a V-shaped structure.

[0021] By adopting the above technical solution, as the water level rises, the angle of the second cable increases as the floating support sleeve rises, which can tighten the first cable, gradually increasing the tension of the first cable, thereby providing a stable support effect for the floating support sleeve.

[0022] Optionally, the float is made of hollow plastic and has a trapezoidal structure that is wider at the top and narrower at the bottom, and a water guide groove is provided on the water-facing surface of the float.

[0023] By adopting the above technical solution, multiple floats are set along the water-facing arc surface to form a protective barrier. Water is guided by the water guide channel to flow along the surface of the float, reducing the front pressure of the water flow on the float.

[0024] Optionally, the hydraulic damper and the support plate are respectively hinged at both ends by a shaft to a first rotating seat and a second rotating seat. The first rotating seat is fixedly connected to the back of the float plate, and the second rotating seat is fixedly connected to the arc-shaped guard plate on the water-facing side.

[0025] By adopting the above technical solution, when the float is impacted by water flow, it will undergo a damped overturning phenomenon towards the hydraulic damper side, thereby reducing the front pressure of the water flow on the float and achieving a buffering and energy absorption effect.

[0026] Beneficial effects

[0027] The technical solutions provided in this application, including one or more, have at least the following technical effects or advantages: A quick-assembly and limiting sleeve of a splicable floating support is fitted onto the outside of the bridge structure. Multiple floating plates with buffer and energy dissipation functions are installed on the water-facing arc surface of the floating support, and multiple anti-collision cylinders are installed on the sides and backwater surfaces, achieving anti-collision protection and auxiliary floating effects. As the water level rises, the angle of the second cable increases, tightening the first cable and gradually increasing its tension, thus providing stable support for the floating support and forming a complete bridge flood control safety system. Compared with traditional single-function flood control devices, this system can more comprehensively and effectively protect the bridge structure's safety during floods. The trapezoidal design of the floating plates (wider at the top and narrower at the bottom) and the flow channels on their surfaces cleverly utilize water flow characteristics, reducing the frontal impact of water flow on the baffles and improving the baffles' protective effect and stability. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a safety device for protecting a bridge from flooding, as disclosed in a preferred embodiment of this application.

[0029] Figure 2 This is a schematic diagram of the bridge structure removal structure of a safety device for protecting a bridge from flooding, as disclosed in a preferred embodiment of this application.

[0030] Figure 3 A preferred embodiment of this application discloses a safety device for protecting a bridge from flooding. Figure 2 Enlarged structural diagram at point A in the middle;

[0031] Figure 4 A preferred embodiment of this application discloses a safety device for protecting a bridge from flooding. Figure 2 Enlarged structural diagram at point B;

[0032] The following are the labels in the diagram: 1. Bridge body; 2. Floating support sleeve; 21. Flat guard plate; 22. Arc-shaped guard plate; 23. Wear-resistant strip; 24. Perforation; 25. Rectangular groove; 26. Locking bolt; 3. Anchor bolt; 4. Anti-collision cylinder; 41. Rotary block; 5. Tensioning mechanism; 51. First cable; 52. Guide ring; 53. Second cable; 54. Connecting seat; 6. Anti-impact mechanism; 61. Floating plate; 611. Water guide channel; 612. First rotating seat; 62. Hydraulic damper; 63. Support plate; 64. Second rotating seat. Detailed Implementation

[0033] The present application will be further described in detail below with reference to the accompanying drawings.

[0034] Reference Figures 1 to 4 This application provides a safety device for protecting a bridge structure from flooding. The device includes a bridge body 1 and a floating support sleeve 2 installed on the outside of the bridge body 1. The floating support sleeve 2 includes four flat guard plates 21 and four arc-shaped guard plates 22, assembled into an elliptical structure. It also includes:

[0035] Two anchor bolts 3 are movably inserted into each of the anchor bolts 3, the flat guard plate 21, and the arc-shaped guard plate 22, and the bottom end of the anchor bolts 3 extends into the stable soil layer of the riverbed.

[0036] The anti-collision cylinder 4 and the floating support sleeve 2 are provided with multiple anti-collision cylinders 4 along the side and backwater surface. Both ends of the anti-collision cylinder 4 are rotatably mounted with rotating blocks 41 through shafts. The rotating blocks 41 are fixedly connected to the floating support sleeve 2.

[0037] The tensioning mechanism 5 includes a first cable 51 and a second cable 53. A guide ring 52 is fixedly provided in the middle of the first cable 51. The upper ends of the first cable 51 and the second cable 53 are limited and installed on the arc-shaped protective plate 22 on the backwater side. The second cable 53 movably passes through the guide ring 52 and is anchored at the bottom of the bridge body 1. The bottom end of the second cable 53 is anchored in the stable soil layer of the riverbed.

[0038] The anti-impact mechanism 6 includes several floating plates 61, evenly distributed along the water-facing side of the floating support sleeve 2. A hydraulic damper 62 and a support plate 63 are rotatably hinged between the back of the floating plates 61 and the arc-shaped protective plate 22 on the water-facing side. The floating support sleeve 2, assembled into an elliptical structure by four flat protective plates 21 and four arc-shaped protective plates 22, is fitted onto the outside of the bridge body 1 and mutually restrained by bolts. The floating support sleeve 2, in conjunction with multiple anti-collision cylinders 4, can float on the water surface. Multiple anchor rods 3 are inserted into the elliptical structure of the floating support sleeve 2, with each anchor rod 3 deeply inserted into the stable soil layer of the riverbed, allowing the floating support sleeve 2 to float with the water surface and stably rise and fall along the anchor rods 3. A tensioning mechanism 5, consisting of a first cable 51 and a second cable 53, is connected to each of the four corners of the floating support sleeve 2. Cable 53 is movable through guide ring 52 and anchored at the bottom of bridge body 1 to form a triangular structure. The bottom of second cable 53 is anchored in the stable soil layer of the riverbed. As the water level rises, the angle of second cable 53 increases with the rise of floating support sleeve 2, which can tighten first cable 51 and gradually increase the tension of first cable 51, thereby providing stable support for floating support sleeve 2. At the water-facing end of floating support sleeve 2, multiple floating plates 61 are set along the arc surface. Each floating plate 61 is rotatably hinged to the arc-shaped protective plate 22 on the water-facing side with a hydraulic damper 62 and a support plate 63. Thus, when flood impact occurs, the floating plates 61 and hydraulic dampers 62 achieve buffering and energy dissipation effects. In addition, multiple anti-collision cylinders 4 set on the side of floating support sleeve 2 can effectively prevent collisions, thereby avoiding the impact of floating foreign objects and effectively ensuring the safety of bridge body 1.

[0039] Reference Figure 2 and Figure 3 The inner walls of both the flat guard plate 21 and the arc-shaped guard plate 22 are integrally fixed with multiple wear-resistant strips 23, forming multiple elliptical structures. Both ends of the flat guard plate 21 and the arc-shaped guard plate 22 are provided with two rectangular grooves 25, and the inner walls of the rectangular grooves 25 are provided with through holes for threaded installation of locking bolts 26. By providing wear-resistant strips 23 on the inner walls of the flat guard plate 21 and the arc-shaped guard plate 22, the arc-shaped guard plate 22 can slide along the bridge body 1 during water level changes, and the wear-resistant strips 23 can be used for wear resistance treatment. Adjacent flat guard plates 21 are limited and fixed by locking bolts 26, and adjacent arc-shaped guard plates 22 are limited and fixed by locking bolts 26. Similarly, flat guard plates 21 and arc-shaped guard plates 22 are also limited and fixed by locking bolts 26.

[0040] Reference Figure 2 and Figure 3Both the flat guard plate 21 and the arc-shaped guard plate 22 are provided with two through holes 24. The anchor rod 3 moves through the through holes 24. Both the flat guard plate 21 and the arc-shaped guard plate 22 are movably inserted with an anchor rod 3, so that the flat guard plate 21 and the arc-shaped guard plate 22 are limited on the horizontal plane, while the flat guard plate 21 and the arc-shaped guard plate 22 can slide along the corresponding anchor rod 3 in the vertical direction.

[0041] Reference Figure 2 and Figure 3 Both the flat guard plate 21 and the curved guard plate 22 are made of lightweight, high-strength carbon fiber composite material, and the cross-sectional thickness is 80 cm. The flat guard plate 21 and the curved guard plate 22 are made of lightweight, high-strength carbon fiber composite material, which can maintain the stability and strength of the structure.

[0042] Reference Figure 2 and Figure 4 The anti-collision cylinder 4 is made of plastic and has a central hole for rotating the shaft. The two ends of the shaft are rotatably connected to the rotating blocks 41. Reflective warning stickers can be pasted on the anti-collision cylinder 4 to achieve the purpose of reflective warning. Furthermore, by rotating the central shaft and the two rotating blocks 41, the impact direction can be changed during an impact.

[0043] Reference Figure 1 and Figure 2 The upper ends of the first cable 51 and the second cable 53 are both connected to the connecting seat 54 by hinges. The connecting seat 54 is fixed on the arc-shaped protective plate 22 installed on the backwater side. The second cable 53 is distributed in a V-shape. When the water level rises, as the floating support sleeve 2 rises, the angle of the second cable 53 increases, which can tighten the first cable 51, so that the tension of the first cable 51 gradually increases, thereby providing a stable support effect for the floating support sleeve 2.

[0044] Reference Figure 2 and Figure 3 The float 61 is made of hollow plastic and has a trapezoidal structure that is wider at the top and narrower at the bottom. The water-facing surface of the float 61 is provided with a water guide groove 611. Multiple grooves are provided along the water-facing arc surface of the float 61 to form a protective barrier. The water guide groove 611 is used to guide the water flow along the surface of the float 61, reducing the pressure of the water flow on the front of the float 61.

[0045] Reference Figure 2 and Figure 3 The hydraulic damper 62 and the support plate 63 are respectively hinged at both ends by a shaft to a first rotating seat 612 and a second rotating seat 64. The first rotating seat 612 is fixedly connected to the back of the float plate 61, and the second rotating seat 64 is fixedly connected to the arc-shaped guard plate 22 on the water-facing side. When the float plate 61 is impacted by the water flow, it will undergo a damped overturning phenomenon towards the hydraulic damper 62, thereby reducing the front pressure of the water flow on the float plate 61 and achieving a buffering and energy absorption effect.

[0046] Working principle: Four flat guard plates 21 and four arc-shaped guard plates 22 are spliced ​​and installed along the outside of the elliptical bridge body 1. Adjacent spliced ​​parts are then threaded together using bolts 26 to form a floating support sleeve 2. This floating support sleeve 2 is fitted onto the outside of the bridge body 1 and, together with multiple anti-collision cylinders 4, floats on the water surface. Multiple anchor rods 3 can be simultaneously inserted into the elliptical structure of the floating support sleeve 2, and all anchor rods 3 are deeply embedded in the stable soil layer of the riverbed. Therefore, when the water level changes, the floating support sleeve 2 can stably rise and fall along the anchor rods 3. At each of the four corners of the floating support sleeve 2, a tensioning mechanism 5 consisting of a first cable 51 and a second cable 53 is connected. The second cable 53 movably passes through a guide ring 52 and its bottom end is anchored to the bottom of the bridge body 1. A triangular structure is formed, and the bottom end of the second cable 53 is anchored in the stable soil layer of the riverbed. As the water level rises, the angle of the second cable 53 increases with the rise of the floating support sleeve 2, which can tighten the first cable 51, gradually increasing the tension of the first cable 51, thereby providing a stable support effect for the floating support sleeve 2. At the water-facing end of the floating support sleeve 2, multiple floating plates 61 are set along the arc surface. Each floating plate 61 is rotatably hinged to a hydraulic damper 62 and a support plate 63 between itself and the arc-shaped protective plate 22 on the water-facing side. Thus, when floods hit, the floating plates 61 and the hydraulic dampers 62 achieve a buffering and energy dissipation effect. In addition, multiple anti-collision cylinders 4 set on the side of the floating support sleeve 2 can effectively prevent collisions, thereby avoiding the impact of floating foreign objects and effectively ensuring the safety of the bridge body 1.

Claims

1. A safety device for protecting a bridge from flooding, comprising a bridge body (1) and a floating support sleeve (2) assembled and installed on the outside of the bridge body (1), wherein the floating support sleeve (2) includes four flat guard plates (21) and four arc-shaped guard plates (22), and is assembled and spliced ​​to form an elliptical structure, characterized in that: It also includes: Anchor rod (3), two anchor rods (3) are movably inserted on both the flat guard plate (21) and the arc guard plate (22), and the bottom end of the anchor rod (3) extends into the stable soil layer of the riverbed; Anti-collision cylinder (4), the floating support sleeve (2) is provided with multiple anti-collision cylinders (4) along the side and backwater surface, and both ends of the anti-collision cylinder (4) are rotatably mounted with rotating blocks (41) through shafts, and the rotating blocks (41) are fixedly connected to the floating support sleeve (2); The tensioning mechanism (5) includes a first cable (51) and a second cable (53). A guide ring (52) is fixedly provided in the middle of the first cable (51). The upper ends of the first cable (51) and the second cable (53) are limited and installed on the arc-shaped guard plate (22) on the backwater side. The second cable (53) moves through the guide ring (52) and is anchored at the bottom of the bridge body (1). The bottom end of the second cable (53) is anchored in the stable soil layer of the riverbed. The anti-impact mechanism (6) includes several floating plates (61) and is evenly distributed along the water-facing side of the floating support sleeve (2). The back of the floating plate (61) and the arc-shaped guard plate (22) on the water-facing side are rotatably hinged to a hydraulic damper (62) and a support plate (63).

2. The safety device for protecting a bridge structure from flooding according to claim 1, characterized in that: The inner walls of the flat guard plate (21) and the arc guard plate (22) are integrally fixed with multiple wear-resistant strips (23) and form multiple elliptical structures. The flat guard plate (21) and the arc guard plate (22) are provided with two rectangular grooves (25) at both ends, and the inner walls of the rectangular grooves (25) are provided with through holes for threaded installation of bolts (26).

3. The safety device for protecting a bridge structure from flooding according to claim 1, characterized in that: Both the flat guard plate (21) and the arc-shaped guard plate (22) are provided with two through holes (24), and the anchor rod (3) moves through the through holes (24).

4. A safety device for protecting a bridge structure from flooding according to claim 1, characterized in that: Both the flat guard plate (21) and the arc-shaped guard plate (22) are made of lightweight, high-strength carbon fiber composite material, and the cross-sectional thickness is 80 cm.

5. A safety device for protecting a bridge structure from flooding according to claim 1, characterized in that: The anti-collision cylinder (4) is made of plastic and has a central hole in the center for rotating the shaft. The two ends of the shaft are rotatably connected to the rotating block (41).

6. A safety device for protecting a bridge structure from flooding according to claim 1, characterized in that: The upper ends of the first cable (51) and the second cable (53) are both connected to a connecting seat (54) by hinges. The connecting seat (54) is fixed on the arc-shaped guard plate (22) installed on the back side of the water, and the second cable (53) is distributed in a V-shaped structure.

7. A safety device for protecting a bridge structure from flooding according to claim 1, characterized in that: The float (61) is made of hollow plastic and has a trapezoidal structure that is wider at the top and narrower at the bottom. A water guide groove (611) is provided on the water-facing surface of the float (61).

8. A safety device for protecting a bridge structure from flooding according to claim 7, characterized in that: The hydraulic damper (62) and the support plate (63) are respectively hinged at both ends by a shaft to a first rotating seat (612) and a second rotating seat (64). The first rotating seat (612) is fixedly connected to the back of the float (61), and the second rotating seat (64) is fixedly connected to the arc-shaped guard plate (22) on the water-facing side.

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