External multi-layer composite anti-collision device suitable for anti-collision pier

Abstract

The utility model discloses an external multi-layer composite anti-collision device suitable for an anti-collision pier. The external multi-layer composite anti-collision device comprises a protective layer, a waveform structure buffer layer and an internal rotation honeycomb structure buffer layer which are sequentially arranged from outside to inside. The wave-shaped structure buffer layer comprises a plurality of wave-shaped unit bodies, and each wave-shaped unit body comprises a first wave-shaped structure and a second wave-shaped structure which are the same in structure and are symmetrically arranged; the internal rotation honeycomb structure buffer layer comprises an annular structure, the annular structure comprises a plurality of adjacent honeycomb unit bodies, each honeycomb unit body comprises an outer wall and an internal rotation wall arranged in the outer wall, the outer wall and the internal rotation wall are both of a polygonal structure, and the side length of the internal rotation wall is smaller than that of the outer wall. The outer wall and the inner rotating wall are connected and form a plurality of cavities. According to the device, the multi-layer composite structure buffer layer is utilized, the impact resistance and the energy dissipation capacity are effectively improved, the function of the anti-collision pier can be rapidly recovered by replacing the device after the anti-collision pier is impacted, the rapid recovery function is achieved, and the wide applicability is achieved.

Description

Technical Field

[0001] The utility model relates to an external multi-level composite anti-collision device suitable for an anti-collision pier, belonging to the technical field of bridge anti-collision. Background Art

[0002] Bridge safety is crucial in transportation infrastructure construction. With the increasing volume of shipping, the risk of collisions with waterway bridges is also increasing. To protect bridges from ship or vehicle impacts, crash barriers are typically installed near the main piers. However, existing crash barrier designs and construction often utilize reinforced concrete pier structures, which have limitations in terms of stiffness, energy dissipation, and impact resistance.

[0003] To effectively enhance the impact resistance of crash barriers, a multi-layer composite energy-dissipating design has become an innovative solution. This design incorporates multiple energy-dissipating layers within the structure, allowing energy to be absorbed and dissipated layer by layer upon impact, thereby protecting the primary crash barrier structure from damage. Furthermore, resilient design emphasizes the structure's ability to recover after impact, ensuring that even after localized damage, the structure maintains its essential functionality.

[0004] While various anti-collision devices are currently available on the market, research and development of external, multi-layered composite anti-collision devices for existing crash barriers remains insufficient. Therefore, the development of a high-quality, removable, and impact-resistant external composite anti-collision device suitable for existing crash barriers is becoming increasingly urgent. Such a device would need to effectively enhance the impact resistance of existing crash barriers, thereby enhancing bridge safety and addressing the growing risk of collisions between waterway bridges. Utility Model Content

[0005] To address the aforementioned technical issues, this utility model provides an external multi-layer composite anti-collision device suitable for use with crash piers, designed to enhance bridge safety and mitigate the risk of collisions with waterway bridges. This device utilizes a multi-layer composite structured buffer layer to effectively enhance impact resistance and energy dissipation. Furthermore, the device is removably attached to the periphery of the crash pier. After an impact, the device can be quickly replaced to restore the crash pier's functionality, thereby ensuring bridge safety.

[0006] The utility model provides an external multi-level composite anti-collision device suitable for anti-collision piers, comprising a protective layer, a corrugated structure buffer layer, and an inward-rotating honeycomb structure buffer layer arranged in sequence from the outside to the inside; the corrugated structure buffer layer comprises a plurality of corrugated unit bodies, each of the corrugated unit bodies comprises a first corrugated structure and a second corrugated structure having the same structure and being symmetrically arranged; the inward-rotating honeycomb structure buffer layer comprises an annular structure, the annular structure comprises a plurality of adjacently arranged honeycomb unit bodies, each of the honeycomb unit bodies comprises an outer wall and an inward-rotating wall arranged in the outer wall, the outer wall and the inward-rotating wall are both polygonal structures, the side length of the inward-rotating wall is smaller than the side length of the outer wall, the outer wall is connected to the inward-rotating wall and forms a plurality of cavities.

[0007] In one embodiment of the present invention, a first sleeve is provided between the protective layer and the corrugated structure buffer layer, a second sleeve is provided between the corrugated structure buffer layer and the inward-rotating honeycomb structure buffer layer, and the protective layer is sleeved on the outer periphery of the first sleeve.

[0008] In one embodiment of the present invention, the protective layer is made of rubber.

[0009] In one embodiment of the present invention, several of the corrugated unit bodies are arranged between the first sleeve and the second sleeve, and the several corrugated unit bodies are evenly distributed in a ring shape; the first corrugated structure and the second corrugated structure in each of the corrugated unit bodies intersect in the middle, and the two sides are respectively connected to the first sleeve and the second sleeve.

[0010] In one embodiment of the present invention, a third sleeve is provided on the inner wall of the inward-rotating honeycomb structure buffer layer, and the annular structure of the inward-rotating honeycomb structure buffer layer has two circles, and the two circles of annular structures are adjacent to each other.

[0011] In one embodiment of the present invention, the two circles of the annular structured honeycomb unit bodies are connected by a honeycomb unit body connecting edge provided on the outer wall, and the honeycomb unit body and the second sleeve or the third sleeve are connected by a sleeve connecting edge provided on the outer wall.

[0012] In one embodiment of the present invention, the third sleeve is sleeved on the outer periphery of the crash pier, and the outer periphery of the crash pier is also sleeved with a limiting device, and the limiting device is annular as a whole, including a load-bearing ring sleeved on the outer periphery of the crash pier and a fixing ring fixedly connected to the load-bearing ring; the load-bearing ring is a flat disc-shaped structure as a whole, and the protective layer, the first sleeve, the corrugated structure buffer layer, the second sleeve, the inward-rotating honeycomb structure buffer layer, and the third sleeve are all abutted against the load-bearing ring.

[0013] In one embodiment of the present invention, the side wall of the fixing ring is provided with a plurality of reserved through holes, the outer wall of the reserved through hole is provided with an anti-slip gasket, the outer side of the anti-slip gasket is provided with a nut, and bolts are passed through the nut, the anti-slip gasket and the reserved through hole, and the bolts are fastened to the nut.

[0014] In one embodiment of the present invention, the outer diameter of the load-bearing ring is greater than the outer diameter of the fixing ring.

[0015] In one embodiment of the present invention, the first sleeve, the second sleeve, and the third sleeve are all steel annular structures.

[0016] The beneficial effects of the utility model are as follows:

[0017] 1. Enhanced impact resistance: The external multi-level composite anti-collision device adopts a multi-level composite structure design, which significantly improves the impact resistance of the structure. The external multi-level composite anti-collision device cleverly combines the corrugated structure and the inward-rotating honeycomb structure elements to achieve a differentiated distribution of functions of each layer. The outer protective layer significantly improves the wear resistance of the structural surface and effectively extends the service life of the device; the second outer corrugated structure buffer layer can absorb most of the energy during the impact through its large deformation characteristics; and the inner inward-rotating honeycomb structure buffer layer absorbs the remaining energy while providing the necessary rigidity for the device to prevent damage to the bridge piers due to excessive deformation. This structural design greatly improves the energy absorption efficiency of the device and ensures sufficient structural rigidity, effectively improving the overall impact resistance.

[0018] 2. Quick recovery function: The external multi-level composite anti-collision device has the characteristics of convenient installation and disassembly. When the anti-collision pier encounters a collision, the entire device can be quickly disassembled and replaced to quickly restore the basic function of the anti-collision pier, thereby minimizing the impact on traffic.

[0019] 3. Improved construction efficiency and quality: The external multi-level composite anti-collision device is prefabricated and assembled, allowing for quick and efficient assembly of the individual components. This reduces the tedious steps and time required for traditional anti-collision installation, significantly improving construction efficiency. Furthermore, since all components are prefabricated and standardized in the factory, their quality and precision are ensured, thereby enhancing construction quality.

[0020] 4. Good universality: In view of the fact that the external multi-level composite anti-collision device has the property of being externally detachable and its shape is relatively regular, it can be widely applied to a large number of already built cylindrical anti-collision piers and has good universality.

[0021] In summary, the external multi-level composite anti-collision device not only enhances the impact resistance, but also realizes the rapid recovery function, improves the construction efficiency and quality, and has wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0023] In the attached figure:

[0024] Figure 1 This is a transverse cross-sectional view of the multi-level composite anti-collision device provided by the utility model.

[0025] Figure 2 This is a three-dimensional diagram of the corrugated structure buffer layer provided by the utility model.

[0026] Figure 3 This is a three-dimensional diagram of the inward-rotating honeycomb structure buffer layer provided by the utility model.

[0027] Figure 4 This is a three-dimensional diagram of the honeycomb unit body provided by the utility model.

[0028] Figure 5 This is a longitudinal cross-sectional view of the multi-level composite anti-collision device provided by the utility model.

[0029] Figure 6 This is a bottom view of the limiting device provided by the utility model.

[0030] In the figure: 1. Protective layer; 2. First sleeve; 3. Corrugated structure buffer layer; 301. First corrugated structure; 302. Second corrugated structure; 4. Second sleeve; 5. Inward-rotating honeycomb structure buffer layer; 501. Outer wall; 502. Inward-rotating wall; 503. Cavity; 504. Honeycomb unit body connecting edge; 505. Sleeve connecting edge; 6. Third sleeve; 7. Load-bearing ring; 8. Fixing ring; 801. Bolt; 802. Nut; 803. Anti-slip gasket; 804. Reserved through hole; 9. Anti-collision pier. DETAILED DESCRIPTION

[0031] 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 embodiments described are 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 making creative efforts are within the scope of protection of the present invention.

[0032] In this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0033] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0034] like Figure 1-6 As shown, the utility model provides an external multi-level composite anti-collision device suitable for anti-collision piers. The device is distributed in a ring-shaped multi-level manner as a whole, and is provided with a protective layer 1, a first sleeve 2, a corrugated structure buffer layer 3, a second sleeve 4, an inward-rotating honeycomb structure buffer layer 5, and a third sleeve 6 from the outside to the inside.

[0035] In some embodiments, the protective layer 1 is annular and is sleeved on the outer circumference of the first sleeve 2 to protect the first sleeve 2 from corrosion and wear, while also having a buffering function.

[0036] Preferably, the protective layer 1 is made of rubber, the thickness of the protective layer 1 is set to 100 mm, and the diameter of the ring is designed according to the actual size of the crash barrier; the protective layer 1 preferably uses polyurethane rubber (PU) with excellent elasticity and good wear resistance as the main material; if the crash barrier to be used is located in water areas, ethylene propylene diene monomer rubber (EPDM) can also be considered as the main material.

[0037] In some embodiments, the corrugated structure buffer layer 3 includes several corrugated unit bodies arranged between the first sleeve 2 and the second sleeve 4, and the several corrugated unit bodies are evenly distributed in a ring shape. Each of the corrugated unit bodies includes a first corrugated structure 301 and a second corrugated structure 302 with the same structure and symmetrical arrangement. The first corrugated structure 301 and the second corrugated structure 302 in each of the corrugated unit bodies intersect in the middle, and the two sides are respectively connected to the first sleeve 2 and the second sleeve 4.

[0038] In this embodiment, the waveform unit body is composed of a first waveform structure 301 and a second waveform structure 302 that are symmetrically arranged and intersecting in the middle, so that the waveform of the waveform unit body is a sinusoidal waveform with excellent energy dissipation capacity, specifically by cutting off the two peaks of the sine wave.

[0039] Preferably, the thickness of the first corrugated structure 301 and the second corrugated structure 302 is designed to be 5 mm, and the material of the first corrugated structure 301 and the second corrugated structure 302 is Q345 steel; Q345 steel has excellent dynamic load and impact load bearing capacity and can effectively absorb a large amount of energy, so it is suitable as a manufacturing material for the first corrugated structure 301 and the second corrugated structure 302; other steels with excellent impact resistance and energy dissipation capacity, such as Q390 steel, Q420 steel, etc., can also be selected to meet different application requirements and performance standards.

[0040] In some embodiments, the inward-rotating honeycomb structure buffer layer 5 includes two adjacent annular structures, each of which includes several adjacent honeycomb unit bodies, each of which includes an outer wall 501 and an inward-rotating wall 502 arranged inside the outer wall 501, and the outer wall 501 and the inward-rotating wall 502 are both polygonal structures, the side length of the inward-rotating wall 502 is smaller than the side length of the outer wall 501, and the outer wall 501 is connected to the inward-rotating wall 502 and forms several cavities 503.

[0041] Furthermore, the two circles of the annular structured honeycomb unit bodies are connected via a honeycomb unit body connecting edge 504 provided on the outer wall 501 , and the honeycomb unit body and the second sleeve 4 or the third sleeve 6 are connected via a sleeve connecting edge 505 provided on the outer wall 501 .

[0042] Optionally, the outer wall 501 and the inner rotating wall 502 are both octagonal cavity structures, and the two octagonal cavity structures are interdependent to form a honeycomb unit body; the inner rotating honeycomb structure of the inner rotating honeycomb structure buffer layer 5 has better energy consumption capacity and impact resistance than the ordinary honeycomb structure, and the closely connected form can provide the necessary rigidity for the structure.

[0043] Preferably, the thickness of the outer wall 501 is 4 mm, and the thickness of the inner rotating wall 502 is 3 mm; the material of the outer wall 501 and the inner rotating wall 502 is preferably SM490B steel; SM490B steel is widely used as a structural material for ships, bridges and various industrial machinery due to its high strength and good welding performance, especially in applications with high loads and impacts, so it is very suitable for the inner rotating honeycomb structure; other steels with excellent impact resistance and energy consumption capacity, such as Q345 steel, Q420 steel, etc., can also be selected according to actual conditions to meet different application requirements and performance standards.

[0044] Among them, the corrugated structure buffer layer 3 and the inward-rotating honeycomb structure buffer layer 5 can be manufactured using the laser selective melting SLM technology in 3D printing technology; SLM technology can produce high-precision and high-strength metal parts, and is suitable for manufacturing complex-shaped, dense-structured, and high-precision metal functional parts.

[0045] In some embodiments, the third sleeve 6 is sleeved on the outer periphery of the crash pier 9, and a limiting device is also sleeved on the outer periphery of the crash pier 9. The limiting device is annular as a whole, including a load-bearing ring 7 sleeved on the outer periphery of the crash pier 9 and a fixing ring 8 fixedly connected to the load-bearing ring 7; the load-bearing ring 7 is a flat disc-shaped structure as a whole, and the protective layer 1, the first sleeve 2, the corrugated structure buffer layer 3, the second sleeve 4, the inward-rotating honeycomb structure buffer layer 5, and the third sleeve 6 are all abutted on the load-bearing ring 7.

[0046] Furthermore, the side wall of the fixing ring 8 is provided with several reserved through holes 804, the outer wall of the reserved through hole 804 is provided with an anti-slip gasket 803, the outer side of the anti-slip gasket 803 is provided with a nut 802, and the nut 802, the anti-slip gasket 803 and the reserved through hole 804 are penetrated by a bolt 801, and the bolt 801 is fastened to the nut 802.

[0047] In this embodiment, six reserved through holes 804 are set at equal intervals on the side wall of the fixing ring 8; nuts 802, bolts 801 and anti-slip washers 803 are used to fix the fixing ring 8 to the outer periphery of the crash barrier 9 to limit the downward movement of the protective layer 1, the first sleeve 2, the corrugated structure buffer layer 3, the second sleeve 4, the inward-rotating honeycomb structure buffer layer 5, and the third sleeve 6; and, an anti-slip washers 803 are added to the fixing position of the bolt 801 to increase the reliability of the fixation of the bolt 801.

[0048] Optionally, the outer diameter of the load-bearing ring 7 is greater than the outer diameter of the fixing ring 8; the load-bearing ring 7 and the fixing ring 8 can be prefabricated as an integral unit.

[0049] Optionally, the first sleeve 2, the second sleeve 4, and the third sleeve 6 are all steel annular structures, and the thickness is 8 mm.

[0050] In addition, the present invention also provides a construction method for an external multi-layer composite anti-collision device suitable for a crash pier, comprising the following steps:

[0051] S1: Prefabricate the corrugated structure buffer layer 3 and the inward-rotating honeycomb structure buffer layer 5 using the selective laser melting (SLM) technology; prefabricate the multi-stage annular first sleeve 2, the second sleeve 4, and the third sleeve 6 according to the size of the crash pier 9;

[0052] S2: Fixing the corrugated structure buffer layer 3, the inward-rotating honeycomb structure buffer layer 5, the first sleeve 2, the second sleeve 4, and the third sleeve 6 by welding to form a whole;

[0053] S3: Insert the limiting device into the crash pier 9 to a suitable position, and drive the bolt 801 into the crash pier 9 through the reserved through hole 804 of the fixing ring 8; then screw the nut 802 into the bolt 801 to fix the limiting device on the crash pier;

[0054] S4: hoist the anti-collision device into the anti-collision pier 9 so that it falls on the load-bearing ring 7 of the limiting device;

[0055] S5: Finally, the protective layer 1 is inserted into the outermost layer of the anti-collision device, and the anti-collision installation is completed.

[0056] The protection scope of the present invention is not limited to the above-mentioned embodiments. Any modifications, equivalent substitutions and improvements that can be made by professionals in this field within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An external multi-level composite anti-collision device suitable for anti-collision piers, characterized in that: It includes a protective layer, a corrugated structure buffer layer, and an inward-rotating honeycomb structure buffer layer which are arranged in sequence from the outside to the inside; the corrugated structure buffer layer includes a plurality of corrugated unit bodies, each of which includes a first corrugated structure and a second corrugated structure with the same structure and arranged symmetrically; the inward-rotating honeycomb structure buffer layer includes an annular structure, which includes a plurality of adjacently arranged honeycomb unit bodies, each of which includes an outer wall and an inward-rotating wall arranged inside the outer wall, the outer wall and the inward-rotating wall are both polygonal structures, the side length of the inward-rotating wall is smaller than the side length of the outer wall, the outer wall is connected to the inward-rotating wall and forms a plurality of cavities.

2. The external multi-level composite anti-collision device suitable for a crash barrier according to claim 1, characterized in that: A first sleeve is provided between the protective layer and the corrugated structure buffer layer, a second sleeve is provided between the corrugated structure buffer layer and the inward-rotating honeycomb structure buffer layer, and the protective layer is sleeved on the outer periphery of the first sleeve.

3. The external multi-level composite anti-collision device suitable for a crash barrier according to claim 1, characterized in that: The protective layer is made of rubber.

4. The external multi-level composite anti-collision device suitable for a crash barrier according to claim 2, characterized in that: Several of the corrugated unit bodies are arranged between the first sleeve and the second sleeve, and the several corrugated unit bodies are evenly distributed in a ring shape; the first corrugated structure and the second corrugated structure in each of the corrugated unit bodies intersect in the middle, and the two sides are connected to the first sleeve and the second sleeve respectively.

5. The external multi-level composite anti-collision device suitable for a crash barrier according to claim 2, characterized in that: The inner wall of the inward-rotating honeycomb structure buffer layer is provided with a third sleeve. The annular structure of the inward-rotating honeycomb structure buffer layer has two circles, and the two circles of annular structures are adjacent to each other.

6. The external multi-level composite anti-collision device suitable for a crash barrier according to claim 5, characterized in that: The two ring-shaped honeycomb unit bodies are connected by the honeycomb unit body connecting edge provided on the outer wall, and the honeycomb unit body is connected to the second sleeve or the third sleeve by the sleeve connecting edge provided on the outer wall.

7. The external multi-level composite anti-collision device suitable for a crash barrier according to claim 5, characterized in that: The third sleeve is sleeved on the outer periphery of the crash pier, and a limiting device is also sleeved on the outer periphery of the crash pier. The limiting device is annular as a whole, including a load-bearing ring sleeved on the outer periphery of the crash pier and a fixing ring fixedly connected to the load-bearing ring; the load-bearing ring is a flat disc-shaped structure as a whole, and the protective layer, the first sleeve, the corrugated structure buffer layer, the second sleeve, the inward-rotating honeycomb structure buffer layer, and the third sleeve are all in contact with the load-bearing ring.

8. The external multi-level composite anti-collision device suitable for a crash pier according to claim 7, characterized in that: The side wall of the fixing ring is provided with a plurality of reserved through holes, the outer wall of the reserved through hole is provided with an anti-slip gasket, the outer side of the anti-slip gasket is provided with a nut, and bolts are passed through the nut, the anti-slip gasket and the reserved through hole, and the bolts are fastened to the nut.

9. The external multi-level composite anti-collision device suitable for a crash pier according to claim 7, characterized in that: The outer diameter of the load-bearing ring is greater than the outer diameter of the fixing ring.

10. The external multi-level composite anti-collision device suitable for a crash barrier according to claim 5, characterized in that: The first sleeve, the second sleeve, and the third sleeve are all steel annular structures.

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