Pier protection device and impact-resistant bridge

Abstract

The application relates to the technical field of bridge pier protection, in particular to a bridge pier protection device and an impact-resistant bridge, the bridge pier protection device comprising a base plate, an annular rubber tire and an anchor bar. The base plate is fixedly arranged; the annular rubber tire is arranged on the base plate, the annular rubber tire is arranged around the bridge pier, and a filler is arranged in an annular cavity between the annular rubber tire and the bridge pier; and the anchor bar is fixedly connected with the base plate and the annular rubber tire, so that the annular rubber tire is fixed on the base plate. The bridge pier protection device provided by the application has the advantages that the annular cavity between the annular rubber tire and the bridge pier is filled with the filler, the annular rubber tire can be supported to keep the shape, the deformation resistance is improved, and the protection effect is improved. The annular rubber tire is arranged around the bridge pier, the bridge pier can be protected from being eroded by mud flow, the problem of durable erosion is solved, the service life of the bridge is prolonged, and the safety hidden danger is eliminated. The base plate is fixed on the ground near the bridge pier, the annular rubber tire is supported, the annular rubber tire is prevented from sinking into the soil, and the protection effect can be continuously ensured.

Description

Technical Field

[0001] This application relates to the field of bridge pier protection technology, and more specifically, to bridge pier protection devices and impact-resistant bridges. Background Technology

[0002] With the expansion of mountain highway construction and the increase in road network density, due to complex terrain conditions and route selection limitations, some bridge piers are inevitably located in debris flow gullies. Debris flows, as a geological hazard that combines high-speed fluid dynamics and solid particle impact characteristics, carry gravel and silt that, under the action of turbulent water flow, cause strong scouring, abrasion, and local erosion of bridge piers. In addition, with the frequent occurrence of extreme rainfall events in mountainous areas under the background of global climate change, the frequency and scale of debris flows are showing an increasing trend. At the same time, problems such as insufficient disaster resistance design standards and lagging maintenance management caused by cost control during engineering construction further aggravate the durability erosion of bridge pier structures by debris flows, resulting in a significant shortening of bridge service life and becoming a key hidden danger to the safe operation of transportation infrastructure in mountainous areas. Utility Model Content

[0003] The purpose of this application is to provide a pier protection device and an impact-resistant bridge, which can improve the pier protection capability and extend the service life of the pier.

[0004] To achieve the above objectives, firstly, this application provides a bridge pier protection device, comprising: A pad, wherein the pad is fixedly installed; An annular rubber tire is located on the pad plate and is used to be fitted over the bridge pier. The annular cavity between the annular rubber tire and the bridge pier is filled with filling material. An anchor bar, which is fixedly connected to the pad and the annular rubber tire, so that the annular rubber tire is fixed on the pad.

[0005] In an optional embodiment, the anchor bar is configured as a U-shaped rod, the U-shaped rod including a first end, a second end and a third end, one end of the second end is vertically fixedly connected to the first end, the other end of the second end is vertically fixedly connected to the third end, the second end is fixedly installed in the pad, and the third end and the first end are fixedly connected to the annular rubber tire.

[0006] In an optional embodiment, a cover plate is also included, which is located on the annular rubber tire and is fixedly connected to an end of the first end away from the second end and an end of the third end away from the second end. The cover plate is used to close the annular cavity formed between the annular rubber tire and the pier.

[0007] In an optional embodiment, the number of U-shaped rods is at least two, and the at least two U-shaped rods are equidistantly distributed around the annular rubber tire in the circumference.

[0008] In an optional embodiment, the number of the annular rubber tires is at least two, and the at least two annular rubber tires are distributed sequentially along the axial direction, with the anchor bar penetrating and fixing the at least two annular rubber tires.

[0009] In an optional embodiment, a drainage hole is provided on the side wall of the annular rubber tire near the pad.

[0010] In an optional embodiment, a filter element is provided at the drainage through-hole of the annular rubber tire.

[0011] In an optional embodiment, an arc-shaped support shell is also included, which is fixedly mounted on the anchor bar and supported on the arc-shaped inner wall of the annular rubber tire.

[0012] Secondly, this application also provides impact-resistant bridges, including pier protection devices as described in any of the foregoing embodiments.

[0013] The bridge pier protection device provided in this application has an annular cavity between the annular rubber tire and the bridge pier filled with material. This material supports the annular rubber tire, maintains its shape, improves its resistance to deformation, and enhances its protective effect. The annular rubber tire, fitted over the bridge pier, protects it from erosion by debris flows, solves the problem of durability erosion, extends the bridge's lifespan, and eliminates safety hazards. A base plate is fixed to the ground near the bridge pier, supporting the annular rubber tire, preventing it from sinking into the soil, and ensuring its continued protective function.

[0014] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of one embodiment of the impact-resistant bridge provided in this application; Figure 2 A cross-sectional view of one embodiment of the impact-resistant bridge provided in this application; Figure 3 A schematic diagram of a portion of the structure of one embodiment of the impact-resistant bridge provided in this application, including anchor bars and cover plates; Figure 4 This is a schematic diagram of a partial structure of one embodiment of the impact-resistant bridge provided in this application, including a cover plate.

[0017] icon: 100-Ring rubber tire; 200-Anchor bar; 300-Plate; 400-Plant; 500-Arched support shell; 600-Filling material; 700-Cover plate; 800-Pier. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] In related technologies, the large amounts of mud, sand, and gravel carried by debris flows act like "sandpaper" or "cutting agent," continuously rubbing against the surface of pier 800. This gradually wears away the protective layer of the concrete surface, exposing the internal reinforcing steel. Once the steel is exposed, the corrosion rate accelerates dramatically. The expansion of the corroded steel further cracks the surrounding concrete, creating a vicious cycle that severely weakens the structural integrity of the pier. Although the impact force of each small debris flow is not as great as that of a large debris flow, the high-frequency impacts and vibrations cause micro-cracks in the concrete material of pier 800, ultimately leading to fatigue damage and reducing its load-bearing capacity and durability. The flow of debris flows violently disturbs the riverbed material (mud and rocks) around pier 800, carrying it away and forming scour pits at and around the base of the pier. When the scour pits reach a critical depth, pier 800 will tilt, settle, or even break due to foundation instability. This is one of the main causes of bridge damage. Traditional pier protection includes concrete retaining piers, crash barriers, steel-sheathed backflow dams, and retaining dams. Most of these use rigid materials such as concrete and masonry, which lack buffering and energy dissipation capabilities and are prone to brittle failure. The projects are massive, and the material and transportation costs are high, especially in remote mountainous areas. Once damaged, repairs are difficult and expensive.

[0022] Furthermore, large-scale hardened revetments and retaining walls sever the ecological connection between the river and its banks, destroying habitats for aquatic and terrestrial organisms, a phenomenon known as "channelization," which is detrimental to ecosystem health. Once traditional protective structures are damaged, they typically require large-scale, invasive repair projects. For example, rebuilding concrete retaining walls requires heavy machinery, formwork, and curing time. In remote mountainous areas, poor transportation makes material transport and construction extremely difficult, resulting in long repair cycles and exorbitant costs. Traditional pier protection methods, based on conventional water flow and flood protection concepts, exhibit shortcomings when facing high-energy, multiphase, and highly impactful debris flows, such as insufficient rigidity, high maintenance costs, and environmental unfriendliness. As people increasingly value ecological environmental protection, there is a growing demand for economical, practical, and eco-friendly solutions in protection and control projects. The new flexible protection system, such as the annular rubber tire 100, adopted in this application addresses the shortcomings of traditional methods precisely by employing the concept of "using flexibility to overcome rigidity," providing a more economical, effective, and sustainable solution, particularly suitable for the protection of piers 800 in mountainous debris flow gullies. For the scouring and friction damage of small debris flows to pier 800, the annular rubber tire 100 is an extremely efficient and economical option. It provides pier 800 with a tough and wear-resistant protective sleeve, forms a flexible "anti-scouring mat", and extends the fatigue life of the pier through buffering and vibration reduction.

[0023] like Figure 1 and Figure 2As shown, in a first aspect, embodiments of this application provide a pier protection device, including a pad 300, an annular rubber tire 100, and an anchor bar 200.

[0024] like Figure 1 and Figure 2 As shown, the pad 300 is fixedly installed on the ground (or foundation, etc.) near the circumference of the pier 800.

[0025] like Figure 2 As shown, the annular rubber tire 100 is located on the pad 300, which is used to support the annular rubber tire 100 and prevent it from gradually sinking into the soil around the pier 800 over time.

[0026] The annular rubber tire 100 is installed outside the bridge pier 800 to protect the bridge pier 800.

[0027] For example, the annular rubber tire 100 can be made from waste tires (the waste tires can be cut open, fitted onto the bridge pier 800, and then connected into a complete ring), or it can be made into a ring structure from materials with elastic properties such as rubber, thus realizing the reuse of waste materials and reducing costs.

[0028] The annular cavity between the annular rubber tire 100 and the pier 800 is filled with a filling material 600, which includes, but is not limited to, gravel, sand, or concrete blocks. The filling material 600 is used to support the annular rubber tire 100 and maintain its shape. In a debris flow environment, it can improve the deformation resistance of the annular rubber tire 100 and further enhance the protection effect on the pier 800.

[0029] Anchor bar 200 is used to fix the pad 300 and the annular rubber tire 100 so that the annular rubber tire 100 is fixed on the pad 300.

[0030] One hundred sets of annular rubber tires are installed on the outside of the pier 800 to protect the pier 800 from the strong scouring, abrasion and local erosion of the gravel and mud carried by the debris flow under the action of turbulent water flow. This solves the problem of durability erosion of the pier 800 structure by the debris flow, extends the service life of the bridge and eliminates key hidden dangers to the safe operation of mountain transportation infrastructure.

[0031] For example, the annular rubber tire 100 can be configured as a circular annular structure or an elliptical annular structure, wherein the major axis of the elliptical annular structure can be parallel to the flow direction of the debris flow, thereby improving the debris flow diversion capacity of the annular rubber tire 100 and reducing the impact of the debris flow on the annular rubber tire 100 and the bridge pier 800.

[0032] Furthermore, the annular rubber tire 100, as the protective material for pier 800, is highly compatible with the impact characteristics of debris flows due to its elastic buffering properties. On the one hand, rubber has significant elastic deformation capabilities. When debris flows carrying rocks and mud impact at high speed, the annular rubber tire 100 can absorb energy through compression, torsion, and other deformation methods, converting the impact force into the elastic potential energy of the rubber, preventing the energy from being directly transferred to pier 800, thus forming a buffer barrier like a "flexible shield." On the other hand, rubber has excellent wear and tear resistance. Even when repeatedly scraped by sharp gravel or strongly impacted by large-diameter stones, the surface is not easily scratched or cracked, and it can quickly rebound and recover after deformation, continuously maintaining the integrity of the protective structure. Compared to rigid protective materials such as concrete and masonry, which are prone to cracking or even failure under impact, the annular rubber tire 100, with its "softness overcomes rigidity" characteristic, can dynamically adapt to the complex impact load of debris flows, effectively reducing the risk of structural damage to pier 800.

[0033] Meanwhile, the 100-ring rubber tire is used for the protection of bridge piers 800, and has significant advantages in terms of construction convenience and economy. Its lightweight construction characteristics make it easily adaptable to complex environments: a single tire weighs only 10-20 kg, eliminating the need for large machinery such as cranes and hoists. Installation can be completed simply by manual handling and stacking, making it particularly suitable for mudslide gullies with narrow terrain, steep slopes, or inconvenient transportation, significantly reducing construction difficulty and machinery access costs. The 100% recyclable waste tires of the ring-shaped rubber tire have outstanding resource recycling value, solving environmental problems such as land occupation, fire, and mosquito breeding caused by their accumulation, while avoiding the high energy consumption and carbon emissions in the production process of new materials, aligning with the concept of green construction. The environmentally friendly construction process further reduces ecological impact, with no pollution such as concrete mixing dust or mechanical noise during the entire installation process, and no release of harmful substances to surrounding plants, animals, or water bodies. Significant cost advantages are present throughout the entire lifecycle, with waste tires obtained at almost zero cost. Combined with simple wire binding and gravel filling for fixing, it can save 60%-70% of direct material costs compared to concrete protective structures, and subsequent maintenance only requires periodic inspection and reinforcement, making its overall economic efficiency far superior to traditional protective solutions.

[0034] Furthermore, the 100-ring rubber sheet, when applied to the protection of bridge piers 800, demonstrates significant advantages in structural adaptability, durability, and ease of maintenance. Flexible structural adaptation: It can be tightly fitted to the surface of bridge piers 800, whether circular or square, through cutting or complete stacking, forming a comprehensive protective structure. Environmental durability: The rubber material possesses excellent weather resistance, resisting aging caused by long-term UV exposure and withstanding rainwater erosion and mud abrasion. In humid, high-impact mudslide environments, its service life can reach over 10 years, significantly reducing the frequency of rework. Convenient and efficient maintenance: Because the 100-ring rubber sheet is completely exposed, inspectors can directly observe the structural condition. Any potential hazards such as damage to the 100-ring rubber sheet, loose connectors, or displacement of the protective layer can be detected and repaired immediately. Compared to concealed protective structures, this significantly improves the efficiency of safety inspections and the timeliness of maintenance.

[0035] like Figure 2 and Figure 3 As shown, in one embodiment, the anchor bar 200 is configured as a U-shaped rod, which includes a first end, a second end, and a third end. One end of the second end is vertically fixed to the first end, and the fixing method is such as welding or integral molding.

[0036] The other end of the second end is vertically fixed to the third end, and the fixing method is such as welding or integral molding.

[0037] The second end is fixedly installed in the pad 300.

[0038] The third end and the first end are fixedly connected to the annular rubber tire 100, and the fixing method is, for example, plugging, snapping, bolting, gluing or wire binding.

[0039] For example, the inclination of the pad 300 can be set according to the ground slope at the pier 800. For example, the pad 300 can be set horizontally or tilted at a certain angle relative to the horizontal direction, such as 10°, 15° or 30°. Correspondingly, the second end is also set horizontally or tilted at 10°, 15° or 30° relative to the horizontal direction.

[0040] For example, the second and third ends are arranged vertically.

[0041] The anchor bar 200 is configured as a U-shaped bar including a first end, a second end and a third end. The second end is provided in the pad 300 to keep the anchor bar 200 firmly fixed. The first end and the third end are configured to provide a reliable foundation for connecting the pad 300 and the annular rubber tire 100.

[0042] The third end and the first end are fixedly connected to the annular rubber tire 100 to ensure that the annular rubber tire 100 is tightly and firmly connected to the anchor bar 200, thereby enhancing the reliability of the overall structure and preventing the annular rubber tire 100 from shifting after being impacted by debris flow.

[0043] The second and third ends are set vertically. This design helps to distribute the force reasonably, so that when the anchor bar 200 is subjected to the annular rubber pad 100 and external forces, it can more effectively transfer the force to the pad 300, enhance the overall stability and deformation resistance of the structure, and improve the protection effect on the pier 800.

[0044] like Figure 2 and Figure 3 As shown, in one embodiment, the pier protection device further includes a cover plate 700, which is located on the annular rubber tire 100 and is fixedly connected to one end of the first end away from the second end and one end of the third end away from the second end.

[0045] like Figure 2 As shown, the cover plate 700 is used to seal the annular cavity formed between the annular rubber tire 100 and the pier 800, effectively preventing debris from entering the annular cavity. The entry of debris may change the physical properties of the filling material 600, such as affecting its density and particle size distribution, thereby weakening the supporting effect of the filling material 600 on the annular rubber tire 100. The cover plate 700 avoids this problem.

[0046] In the event of mudslides or water flows, the cover plate 700 prevents the filling material 600 from being washed out of the annular cavity. The filling material 600 plays a crucial role in maintaining the shape and resisting deformation of the annular rubber tire 100. If it is washed out, the annular rubber tire 100 is easily deformed under the impact of mudslides and cannot effectively protect the bridge pier 800. The cover plate 700 ensures that the filling material 600 continues to provide stable support, thereby ensuring that the annular rubber tire 100 can protect the bridge pier 800 for a long time and effectively.

[0047] For example, such as Figure 4 As shown, the cover plate 700 is configured as at least two plates, each with an arc-shaped notch to accommodate the pier 800. This design allows the cover plate 700 to better adapt to piers 800 of different sizes and shapes during installation. In actual engineering projects, piers 800 come in various specifications. The modular cover plate 700 with arc-shaped notches can be flexibly assembled and adjusted according to the actual conditions of the pier 800, improving the versatility and applicability of the device and reducing construction difficulty and cost.

[0048] In one embodiment, the number of U-shaped rods is at least two, and the at least two U-shaped rods are equidistantly distributed around the annular rubber tire 100 in the circumferential direction.

[0049] For example, two U-shaped rods are provided. In another embodiment, three U-shaped rods are provided. Of course, other numbers of U-shaped rods can also be provided, such as four, five, or six.

[0050] At least two U-shaped rods are equidistantly distributed around the annular rubber tire 100. Compared with a single rod, the force on the annular rubber tire 100 can be distributed and transferred to the pad 300 more evenly. This greatly enhances the connection stability between the annular rubber tire 100 and the pad 300, making the entire protective device less prone to local loosening or damage when facing external forces such as mudslides, thus ensuring continuous and effective protection for the bridge pier 800.

[0051] Multiple U-shaped rods work together to fix and support the annular rubber tire 100 from different directions and positions, forming a more stable overall structure. This helps to improve the overall pier protection device's ability to resist deformation and damage. In complex and harsh geological disaster environments, such as when debris flows carry large gravel at high speeds, it can better maintain structural integrity and ensure the normal functioning of the protection.

[0052] The number of U-shaped members can be flexibly selected according to actual engineering needs, such as two, three, or even more. Different usage scenarios present different stress conditions and protection requirements for the pier 800. Adjusting the number of U-shaped members allows for better adaptation to these changes. For example, in areas prone to debris flows and with high impact forces, increasing the number of U-shaped members can provide stronger protection; while in areas with relatively low stress, appropriately reducing the number can ensure protective effectiveness while lowering costs and construction difficulty.

[0053] like Figure 2 As shown, in one embodiment, the number of annular rubber tires 100 is at least two, and the at least two annular rubber tires 100 are distributed sequentially along the axial direction, with the anchor bar 200 passing through and fixing the at least two annular rubber tires 100.

[0054] For example, two annular rubber tires 100 are provided. In another embodiment, three annular rubber tires 100 are provided. Of course, other numbers of annular rubber tires 100 can also be provided, such as four, five, or six, etc.

[0055] The number of annular rubber-lined tires 100 can be flexibly set according to actual protection needs. For example, the number of annular rubber-lined tires 100 can be determined based on the predicted depth of the debris flow in the local area. If the predicted debris flow depth is 50 cm and the axial height of the annular rubber-lined tires 100 is 20 cm, then setting up three annular rubber-lined tires 100 (with an axial length of 60 cm) can meet the protection requirements. This targeted design based on the actual disaster situation allows the protective device to better adapt to debris flow disasters of different regions and scales, improving the practicality and specificity of the device.

[0056] At least two annular rubber-lined supports 100 are arranged sequentially along the axial direction, and anchor bars 200 are used for continuous fixation, forming a multi-layered protection system. Compared with a single annular rubber-lined support 100, the multi-layered structure can more effectively resist the impact, scouring, and abrasion of debris flows. When a debris flow occurs, each layer of annular rubber-lined supports 100 can share part of the impact force, weakening the destructive effect of the debris flow on the pier 800 layer by layer, greatly improving the survivability of the pier 800 in debris flow disasters.

[0057] Multiple annular rubber tires 100 are fixed together by anchor bars 200, forming an organic whole. The anchor bars 200 not only fix the position of the annular rubber tires 100, but also enhance the connection strength between them, making the entire protective structure more stable. Under the dynamic impact of debris flows, the annular rubber tires 100 can work together to withstand external forces, reducing structural damage caused by excessive local stress and ensuring the reliability of the protective device in complex and harsh environments.

[0058] In one embodiment, a drainage hole is provided on the side wall of the annular rubber tire 100 near the pad 300.

[0059] For example, at least two drainage holes are provided, and these two drainage holes are equidistantly distributed around the axial direction of the annular rubber pad 100 to make drainage more uniform. The equidistant distribution design can avoid the problem of water pressure accumulation caused by poor local drainage, ensuring that water around the entire annular rubber pad 100 can be discharged in time, thereby ensuring that the annular rubber pad 100 is subjected to uniform stress in all parts, and will not deform or be damaged due to excessive local water pressure, thus enhancing the stability and reliability of the structure.

[0060] For example, drainage holes with a diameter of 5cm-10cm are made every 50cm-80cm on the annular rubber pad 100. This specification is based on reasonable consideration. Too large a spacing may lead to untimely drainage and ineffective water pressure reduction; too small a spacing will increase construction difficulty and cost, and may also affect the structural strength of the annular rubber pad 100. Similarly, too large a hole diameter may cause the filler material 600 to be flushed out, affecting its supporting function on the annular rubber pad 100; too small a hole diameter will result in poor drainage. The current design ensures good drainage performance while also protecting the structure of the annular rubber pad 100 and the stability of the filler material 600.

[0061] Appropriate drainage hole specifications can effectively prevent the filling material 600 (such as gravel, sand, etc.) in the annular cavity from being washed out by the water flow during drainage. If the filling material 600 is lost, it will weaken its supporting effect on the annular rubber sheet 100, reducing the annular rubber sheet 100's ability to resist debris flow impact. The reasonable setting of the drainage holes ensures that the filling material 600 can exist stably in the annular cavity, continuously providing support for the annular rubber sheet 100 and ensuring its protective function for the bridge pier 800.

[0062] In one embodiment, a filter element is provided at the drainage through-hole of the annular rubber tire 100.

[0063] For example, filter elements include, but are not limited to, filter screens, waterproof geotextiles, etc.

[0064] Filter elements, such as filter screens or waterproof geotextiles, are installed at the drainage holes of the annular rubber sheet 100 to effectively prevent the filling material 600 (such as gravel, sand, etc.) inside the annular cavity from being discharged through the drainage holes with the water flow. The filling material 600 plays a crucial role in maintaining the shape of the annular rubber sheet 100 and providing stable support. If a large amount is lost, the annular rubber sheet 100 is easily deformed when facing the impact of debris flow, and cannot effectively protect the pier 800. The installation of the filter elements ensures that the filling material 600 is always stably present in the annular cavity, continuously providing reliable support for the annular rubber sheet 100.

[0065] Furthermore, the filter element can prevent external debris (such as branches, stones, and garbage) from entering the annular rubber tire 100 through the drainage holes. If these debris enters the annular cavity, they may occupy the space of the filling material 600, affecting the distribution and support effect of the filling material 600, and may also cause wear or damage to the annular rubber tire 100. The filter element effectively avoids this situation and protects the integrity of the internal structure of the annular rubber tire 100.

[0066] like Figure 2 As shown, in one embodiment, the pier protection device further includes an arc-shaped support shell 500, which is fixedly mounted on the anchor bar 200 and supported on the arc-shaped inner wall of the annular rubber tire 100.

[0067] For example, the arc-shaped support shell 500 includes an annular shell (not shown in the figure) and an arc-shaped shell (not shown in the figure), which are fixedly connected by a rod, for example by welding or integral molding. The annular shell is sleeved on the first or third end of the anchor bar 200 (U-shaped rod), and the arc-shaped shell is used to support the arc-shaped inner wall of the annular rubber base 100.

[0068] For example, the connection between the annular shell and the anchor bar 200 (first end or third end) can be welding, snap-fitting or bolting. When bolting is used, the bolt passes through the annular shell and is pressed against the end.

[0069] The arc-shaped support shell 500 is fixed to the anchor bar 200 and supported on the arc-shaped inner wall of the annular rubber tire 100, providing additional support points for the annular rubber tire 100. Under the impact of external forces such as mudslides, the annular rubber tire 100 may be subjected to enormous pressure and deformation forces. The presence of the arc-shaped support shell 500 can effectively resist these deformations, maintain the shape stability of the annular rubber tire 100, and prevent it from losing its protective function for the bridge pier 800 due to excessive deformation.

[0070] The arc-shaped support shell 500, together with the anchor bar 200 and the annular rubber pad 100, forms an organic whole. When subjected to external forces, the forces can be rationally distributed and transmitted to the pad 300 within this integrated structure, avoiding structural damage caused by localized stress concentration and improving the stability and reliability of the entire pier protection device.

[0071] When facing debris flow impacts, the annular rubber tire 100 mainly bears the horizontal impact force and upward buoyancy. The arc-shaped support shell 500 supports the annular rubber tire 100 from the inside, converting part of the horizontal impact force into pressure on the arc-shaped support shell 500, which is then transmitted to the pad 300 through the anchor bar 200. This disperses the force on the annular rubber tire 100 and reduces the risk of damage due to excessive local stress.

[0072] Secondly, embodiments of this application also provide impact-resistant bridges, including bridge span structures, piers 800, and pier protection devices as described in any of the above embodiments.

[0073] Thirdly, embodiments of this application also provide a method for protecting bridge piers, the steps of which include: A concrete pad 300 is poured on the ground around the pier at a radius of 800, and anchor bars 200 are pre-embedded in the pad 300.

[0074] The pre-prepared arc-shaped support shell 500 is accurately installed onto the pre-embedded anchor bar 200. During installation, it is important to ensure that the position of the arc-shaped support shell 500 is accurate and that the connection with the anchor bar 200 is firm and reliable. It can be fixed by means of appropriate connectors (such as bolts) or welding to ensure that the arc-shaped support shell 500 can stably bear the subsequent load.

[0075] Drainage holes are made in the annular rubber tire 100, and at least two annular rubber tires 100 are sequentially fitted onto the pier 800. The arc-shaped support shell 500 is supported at the arc-shaped inner wall of the annular rubber tire 100 and then fixed. The annular rubber tire 100 and the anchor bar 200 are fixedly connected.

[0076] The size and number of drainage holes should be determined according to actual drainage requirements. Next, at least two annular rubber bushings 100 are sequentially fitted onto the pier 800. During installation, attention should be paid to the position of the annular rubber bushings 100 to ensure that adjacent bushings 100 remain in close contact. The arc-shaped support shell 500 is then supported against the arc-shaped inner wall of the annular rubber bushing 100 and secured, ensuring a tight fit between the arc-shaped support shell 500 and the annular rubber bushing 100 for optimal performance. Simultaneously, the annular rubber bushing 100 and the anchor bar 200 are fixedly connected to enhance the overall structural stability.

[0077] Fill the annular cavity between the annular rubber tire 100 and the pier 800 with filler material 600. The selection of filler material 600 should be determined according to the actual usage requirements and environmental conditions. Common filler materials 600 include crushed stone and sand. During the filling process, it is necessary to ensure the compaction of filler material 600 and avoid voids or unevenness. This can be achieved through appropriate vibration or tamping methods.

[0078] The cover plate 700 is accurately installed onto the anchor bar 200 (first and third ends). During installation, it is important to ensure a tight, seamless connection between the cover plate 700 and the anchor bar 200. By installing the cover plate 700, the annular cavity can be effectively sealed, preventing the filling material 600 from leaking out, while also protecting the internal structure.

[0079] Planting 400 plants, such as ivy and star jasmine, at the 700 position of the cover plate, which are evergreen, shade-tolerant, vigorous, and firmly climbing, can provide a certain degree of protection for the ring-shaped rubber mat 100.

[0080] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0081] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bridge pier protection device, characterized in that, include: A pad (300) is fixedly installed; An annular rubber tire (100) is located on the pad (300). The annular rubber tire (100) is used to be fitted over the bridge pier (800). The annular cavity between the annular rubber tire (100) and the bridge pier (800) is filled with filling material (600). An anchor bar (200) is fixedly connected to the pad plate (300) and the annular rubber tire (100) so that the annular rubber tire (100) is fixed on the pad plate (300).

2. The bridge pier protection device according to claim 1, characterized in that, The anchor bar (200) is configured as a U-shaped rod, the U-shaped rod includes a first end, a second end and a third end, one end of the second end is vertically fixedly connected to the first end, the other end of the second end is vertically fixedly connected to the third end, the second end is fixedly installed in the pad (300), and the third end and the first end are fixedly connected to the annular rubber tire (100).

3. The pier protection device according to claim 2, characterized in that, It also includes a cover plate (700) located on the annular rubber tire (100) and fixedly connected to an end of the first end away from the second end and an end of the third end away from the second end. The cover plate (700) is used to close the annular cavity formed between the annular rubber tire (100) and the pier (800).

4. The pier protection device according to claim 2, characterized in that, The number of U-shaped rods is at least two, and the at least two U-shaped rods are equidistantly distributed around the annular rubber tire (100) in the circumference.

5. The pier protection device according to claim 1, characterized in that, The number of the annular rubber tires (100) is at least two, and the at least two annular rubber tires (100) are distributed sequentially along the axial direction. The anchor bar (200) passes through and fixes at least two annular rubber tires (100).

6. The pier protection device according to claim 1, characterized in that, The annular rubber tire (100) has a drainage hole on the side wall near the pad (300).

7. The pier protection device according to claim 6, characterized in that, A filter element is provided at the drainage through hole of the annular rubber tire (100).

8. The bridge pier protection device according to claim 1, characterized in that, It also includes an arc-shaped support shell (500), which is fixedly mounted on the anchor bar (200) and supported on the arc-shaped inner wall of the annular rubber tire (100).

9. An impact-resistant bridge, characterized in that, Includes the pier protection device as described in any one of claims 1 to 8.

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