Composite electric tower foundation damping device and implementation method thereof

Abstract

The invention discloses a composite electric tower foundation damping device which comprises a support, the support comprises a support bottom plate, a first rubber plate block, a support plate block, a second rubber plate block and a support top plate which are horizontally distributed, and the support bottom plate, the first rubber plate block, the support plate block, the second rubber plate block and the support top plate are sequentially and fixedly connected in a layered mode from bottom to top; a horizontal damping device is arranged on the side wall of the support and comprises a vertically-distributed damping plate and a plurality of damping springs connected between the damping plate and the support, and the lower portion of the damping plate is connected with the support bottom plate and the first rubber plate through the damping springs. The upper portion of the damping plate is connected with the support top plate and the second rubber plate block through a plurality of damping springs. In addition, the invention further provides a corresponding implementation method. The combined type electric tower foundation damping device has the functions of multi-stage energy dissipation, elastic recovery and self-resetting, and the stability and the impact resistance of a power transmission tower under the action of complex external force are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission towers, and in particular to a composite power tower foundation shock absorbing device and an implementation method thereof. Background Art

[0002] At present, when blasting works are carried out near transmission towers, the shock waves generated may cause serious damage to the transmission towers, or even cause them to collapse. If the transmission towers are damaged, firstly, the power supply will be interrupted, which may lead to large-scale power outages, affecting the normal operation of industry, commerce and residents' lives; secondly, the power outage will directly threaten the operation of important infrastructure (such as hospitals, transportation, communications, etc.) and national security systems, and may even cause public safety accidents; more seriously, the longer the power supply interruption lasts, the greater the losses to social and economic activities, especially in production enterprises and high-tech industries, which may lead to major economic losses and production chain breaks, affecting the overall stability of the national economy.

[0003] In recent years, seismic isolation technology has been widely used in the construction field, especially in earthquake-prone areas, where seismic isolation bearings are widely used in the seismic design of infrastructure such as houses, bridges and highways. This technology extends the natural vibration period of the superstructure by setting up seismic isolation layers and seismic isolation bearings between the foundation and the superstructure of the building, avoids the superior period of the earthquake, and effectively blocks the transmission of seismic energy to the upper structure. Through this design, the building can not only significantly reduce the seismic response and improve the seismic resistance, but also reduce the damage to the structure caused by the earthquake to a certain extent and protect the safety of the facilities inside the building. Under the action of horizontal seismic loads, the transmission tower will be subjected to a large overturning moment, which will cause the seismic isolation bearings used to bear significant tensile forces. However, the existing seismic isolation bearings have certain limitations in tensile performance and are difficult to meet the seismic requirements of high-rise and super-high-rise buildings in complex seismic environments. This technical bottleneck limits the application of seismic isolation bearings in high-rise buildings, especially when facing large seismic loads, its performance is difficult to fully exert, thus affecting the widespread promotion and application of seismic isolation technology.

[0004] Therefore, there is an urgent need to develop a seismic isolation bearing with stronger tensile performance to improve its seismic resistance in high-rise buildings such as transmission towers and other complex structures. Summary of the invention

[0005] The purpose of the present invention is to provide a composite electric tower foundation shock-absorbing device and an implementation method thereof, which has multi-level energy dissipation, elastic recovery and self-resetting functions, can effectively reduce the propagation of explosion shock waves and damage to the structure, thereby enhancing the stability and impact resistance of the transmission tower under complex external forces, avoiding widespread hazards caused by equipment damage, and well solving the problems of insufficient seismic effect and insufficient tensile strength of existing seismic isolation bearings mentioned in the above background technology.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] In the first aspect, the present invention provides a composite electric tower foundation shock-absorbing device, including a support, wherein the support includes a horizontally distributed support bottom plate, a first rubber plate, a support plate, a second rubber plate and a support top plate, wherein the support bottom plate, the first rubber plate, the support plate, the second rubber plate and the support top plate are layered and fixedly connected in sequence from bottom to top; a horizontal shock-absorbing device is provided on the side wall of the support, wherein the horizontal shock-absorbing device includes a vertically distributed shock-absorbing plate and a plurality of shock-absorbing springs connected between the shock-absorbing plate and the support, wherein the lower part of the shock-absorbing plate is respectively connected to the support bottom plate and the first rubber plate through a plurality of shock-absorbing springs, and the upper part of the shock-absorbing plate is respectively connected to the support top plate and the second rubber plate through a plurality of shock-absorbing springs.

[0008] Furthermore, both ends of the shock absorbing spring are respectively connected with threaded connectors, and the shock absorbing plate, the support bottom plate, the first rubber plate, the second rubber plate, and the support top plate are respectively provided with threaded mounting holes mounted with the threaded connectors.

[0009] Furthermore, the shock-absorbing plate, the support bottom plate, the support plate and the support top plate are formed by casting high-performance concrete; the support is plugged with reinforcing steel bars, and the reinforcing steel bars sequentially connect the support bottom plate, the first rubber plate, the support plate, the second rubber plate and the support top plate.

[0010] Furthermore, the reinforcing steel bars include a steel cage frame formed by a plurality of vertically distributed steel bars and a plurality of horizontally distributed steel bars, and the lower steel bars of the steel cage frame are connected to the embedded steel bars of the concrete foundation through threaded sleeves.

[0011] Furthermore, a buffer mechanism is connected between the shock absorbing plate and the side wall of the support, and the buffer mechanism includes a guide rod, a movable rod and a damping slider. The guide rod is distributed in the vertical direction, and the two ends of the guide rod are respectively fixedly connected to the first rubber plate and the second rubber plate. The guide rod is equipped with two damping sliders symmetrically distributed up and down and a return spring located between the two damping sliders. The damping slider has a sliding slot hole slidably connected to the guide rod, and each of the damping sliders is hinged to one of the movable rods, and the end of the movable rod away from the damping slider is hinged to the shock absorbing plate.

[0012] Furthermore, the damping slider is made of polytetrafluoroethylene (PTFE) material.

[0013] Furthermore, the contact surface between the guide rod and the damping slider is coated with lubricant.

[0014] Furthermore, there are two buffer mechanisms between each shock absorbing plate and the support, which are symmetrically arranged between the shock absorbing plate and the support.

[0015] Furthermore, the support is in the shape of a cube as a whole, and the cross-section of the support along the horizontal direction is a square; there are four horizontal shock absorbing devices, which are respectively distributed on the four side walls of the support.

[0016] In a second aspect, the present invention further provides an implementation method of the above-mentioned composite tower foundation shock absorbing device, comprising the following steps:

[0017] S1. Concrete foundation construction: level and compact the foundation, excavate the foundation pit and pour the concrete foundation;

[0018] S2. Reinforcement steel bar construction: assemble the vertically distributed steel bars and the horizontally distributed steel bars into a steel cage frame as reinforcement steel bars, and connect the lower steel bars of the steel cage frame to the embedded steel bars of the concrete foundation through threaded sleeves;

[0019] S3. Support base plate construction: Build the support base plate construction template, use high-performance concrete to pour and vibrate to compact, and form the support base plate after solidification;

[0020] S4, construction of the first rubber plate: build a rubber casting template on the support bottom plate, roughen the surface of the support bottom plate, pour the filling rubber material and vibrate it to make it dense, and form the first rubber plate after hot vulcanization treatment;

[0021] S5. Construction of support plate: Build the support plate template on the first rubber plate, pour and vibrate high-performance concrete to form the support plate after solidification;

[0022] S6. Construction of the second rubber plate: Build a rubber casting template on the support plate, roughen the surface of the support plate, pour the filling rubber material and vibrate it to make it dense, and form the second rubber plate after hot vulcanization treatment;

[0023] S7. Construction of the bearing top plate: Build the bearing top plate formwork on the second rubber plate, pour and vibrate high-performance concrete to form the bearing top plate after solidification;

[0024] S8. Installation of the horizontal shock absorbing device: first, use locking screws to fix the two fixing blocks on the guide rod to the first rubber plate and the second rubber plate respectively, then install each shock absorbing spring to keep the shock absorbing plate connected to the side wall of the support, and adjust the preload force of the shock absorbing spring by twisting the threaded connector to complete the installation of the horizontal shock absorbing device.

[0025] Compared with the prior art, the present invention provides a composite tower foundation shock absorbing device and an implementation method thereof, which has the following beneficial effects:

[0026] The present invention combines the multiple functions of support, connection, external force transmission and vibration isolation, and can improve the overall seismic resistance and durability while meeting the structural stability. The horizontal shock absorbing device of the present invention is located on the side of the support, and cooperates with the support reinforced by the steel cage. It is a design that combines rigid support and horizontal shock absorbing functions, and can work well with the concrete foundation and the upper structure of the transmission tower. On the one hand, the horizontal shock absorbing device is mainly used to absorb and dissipate horizontal external forces, absorb external forces through the elastic deformation of rubber plates or springs, and return the structure to its initial position through elastic restoring force after the external force disappears; and the horizontal shock absorbing device is set on the side, which can effectively resist the lateral force caused by earthquakes or horizontal impacts, and reduce the overturning risk of the tower structure. On the other hand, the steel cage can provide vertical bearing capacity and shear resistance, and play a reinforcing role on the foundation structure; the reinforcing steel bars are fixedly connected to the concrete foundation through reasonable design, which can resist external force impact and shearing, and ensure the stability and durability of the foundation.

[0027] The present invention can effectively support part of the weight of the system, ensure the close connection and integrity between the various components of the structure, and have excellent vibration isolation and mitigation capabilities in the process of transmitting external force flow between connected components. Through optimized design, the shock absorbing device can effectively reduce the spread of harmful vibrations and the impact of vibrations on the structure when facing external impacts or vibrations, thereby significantly improving the seismic performance and service life of the structure.

[0028] Under dynamic load, the shock-absorbing device provided by the present invention fully combines the characteristics of flexible movement, energy dissipation and self-reset, which not only improves the anti-seismic ability of the transmission tower in earthquakes and blasting shocks, but also significantly enhances its structural stability and safety in complex environments. This technology breaks through the limitations of traditional rigid anti-seismic design and provides reliable theoretical support and engineering application value for the stable operation of transmission towers under extreme working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 2 A top view of the present invention;

[0032] Figure 3 This is a schematic diagram of the half-section structure after the support is installed on the concrete foundation;

[0033] Figure 4 Schematic diagram of the connection between the reinforcement steel bars and the embedded steel bars on the concrete foundation;

[0034] Figure 5 It is a schematic diagram of the connection between the shock absorbing spring and the shock absorbing plate.

[0035] Figure numerals: 10, support; 1, support bottom plate; 2, first rubber plate; 3, support plate; 4, second rubber plate; 5, support top plate; 6, horizontal shock absorbing device; 61, shock absorbing plate; 611, threaded mounting hole; 62, shock absorbing spring; 621, threaded connector; 63, guide rod; 64, movable rod; 65, damping slider; 66, reset spring; 67, fixed block; 7, reinforcing steel bar; 20, concrete foundation; 21, embedded steel bar; 22, threaded sleeve. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The theoretical basis of this invention mainly relies on structural dynamics, energy dissipation theory, isolation and shock absorption principles, combines material mechanics and engineering design concepts, and utilizes technical means such as flexible deformation, damping energy dissipation and multi-directional collaborative support. Through optimized design, effective control and reduction of seismic energy is achieved to ensure the stability, seismic resistance and safety of the structure in complex seismic environments and under external impact loads.

[0038] The present invention is designed based on the following standards and concepts:

[0039] (1) Strength: The shock-absorbing device has the corresponding bearing capacity and mechanical strength to effectively resist vertical loads and horizontal seismic loads.

[0040] (2) Stability: The shock-absorbing device has good displacement constraint and force balance under the action of external force, maintaining the stability of system operation.

[0041] (3) Shock absorption: The shock absorption device has a multi-level shock absorption function and can effectively absorb and dissipate external vibration energy.

[0042] (4) Adaptability: The shock-absorbing device can adapt to a variety of external force conditions, including complex environments such as earthquakes and blasting shocks.

[0043] (5) Safety: The shock absorber operates reliably under extreme conditions, ensuring the safety of the structure and personnel. High-strength materials and stable structural design ensure the fatigue resistance and damage resistance of the device.

[0044] (6) Economical: The shock-absorbing device has high economic benefits and reduces maintenance costs and losses. Through efficient shock absorption, it can avoid structural collapse and economic losses caused by earthquakes or impacts.

[0045] (7) Durability: The shock absorber has good long-term service performance and is suitable for complex environments. It uses high-strength and durable materials (such as rubber, metal springs, etc.) and is not prone to aging or failure under high loads and long-term vibration.

[0046] In this way, through the organic combination of strength, stability, shock absorption, adaptability, safety, economy and durability, an efficient and reliable seismic solution is provided for engineering structures under complex external force environments.

[0047] The present invention is further described in detail below through detailed embodiments in conjunction with the accompanying drawings.

[0048] Unless otherwise specified, the construction methods and operating means used in the examples are all conventional methods and means, and the materials, reagents, etc. used are all commercially available unless otherwise specified.

[0049] refer to Figure 1 to Figure 5This embodiment provides a composite tower foundation shock-absorbing device with multi-level energy dissipation, elastic recovery and self-reset functions. It can not only effectively withstand and disperse the tensile force generated by earthquakes, but also maintain excellent seismic isolation effects in complex earthquake environments. It can be used to connect between the concrete foundation and the tower structure of the transmission tower to improve the seismic performance of the transmission tower in blasting or strong earthquake environments, and ensure the safe and stable operation of the power system under special conditions. Specifically, the composite electric tower foundation shock absorbing device includes a support 10, and the support 10 includes a horizontally distributed support bottom plate 1, a first rubber plate 2, a support plate 3, a second rubber plate 4 and a support top plate 5, and the support bottom plate 1, the first rubber plate 2, the support plate 3, the second rubber plate 4 and the support top plate 5 are layered and fixedly connected in sequence from bottom to top; the side wall of the support 10 is provided with a horizontal shock absorbing device 6, and the horizontal shock absorbing device 6 includes a vertically distributed shock absorbing plate 61 and a plurality of shock absorbing springs 62 connected between the shock absorbing plate 61 and the support 10, the lower part of the shock absorbing plate 61 is respectively connected to the support bottom plate 1 and the first rubber plate 2 through a plurality of shock absorbing springs 62, and the upper part of the shock absorbing plate 61 is respectively connected to the support top plate 5 and the second rubber plate 4 through a plurality of shock absorbing springs 62.

[0050] The present invention is provided with a rubber plate, the core function of which is to absorb the energy input by seismic waves through elastic deformation. The rubber plate is arranged in a stacked form between the support top plate and the support bottom plate, absorbs external impact force and vibration energy through its elastic deformation characteristics, and directly contacts the support top plate and the bottom plate through surface friction to provide initial fixing stability. The support bottom plate, the first rubber plate, the support plate, the second rubber plate and the support top plate together form a stable mechanical connection structure. The support plate ensures the uniformity of the force of the rubber plate through geometric design, and at the same time provides rigid support for the connection between the support top plate and the support bottom plate.

[0051] Under the action of external horizontal loads (such as horizontal forces caused by earthquakes), the rubber plate undergoes shear deformation, which can absorb the energy input by the external force and reduce the transmission of the load to the upper structure. The rubber plate converts part of the seismic energy into its own elastic deformation energy, reducing the impact of the external force on the support top plate. The goal of seismic isolation technology is to reduce the stiffness of the system, extend the natural vibration period of the upper structure, and avoid resonance with the earthquake excitation frequency. Its expression (1) is as follows:

[0052]

[0053] Where T in expression (1) is the natural vibration period of the structure, m is the mass of the structure, and k is the stiffness of the structure. The shock-absorbing device reduces the stiffness of the system through the flexible characteristics of the rubber plate, making the natural vibration period far away from the dominant period of the earthquake, reducing the acceleration response of the structure, and protecting the safety of the upper structure. In addition, the elastic properties of rubber give the rubber plate good recovery ability, and it can return to its initial state after the external force disappears, providing a certain self-reset function for the shock-absorbing device. As the basic isolation unit of the system, the rubber shock absorber effectively weakens the earthquake input energy and provides a solid guarantee for the realization of the subsequent multi-level shock absorption function.

[0054] The shock-absorbing plate is connected to multiple groups of shock-absorbing springs, which are connected to the support through the shock-absorbing springs to provide elastic recovery function. After the earthquake or external force ends, the shock-absorbing spring returns the shock-absorbing device to its initial position through its own elastic recovery force, realizing the self-reset function of the system. The recovery force of the shock-absorbing spring follows Hooke's law, and its expression (2) is as follows:

[0055] F s =k s Δx (2)

[0056] Among them, F in expression (2) s is the spring restoring force, k s is the spring stiffness, and Δx is the displacement of the spring. Reasonable spring design needs to comprehensively consider stiffness and nonlinear characteristics to balance the needs of energy absorption and rapid reset.

[0057] Specifically, in some embodiments, Figure 1 to Figure 3 As shown, the surface of the shock-absorbing plate close to the support is connected with four groups of shock-absorbing springs made of metal, and each group of shock-absorbing springs has 16 springs distributed in a square matrix; wherein the lower part of the shock-absorbing plate is connected to the support bottom plate and the first rubber plate through 16 shock-absorbing springs respectively, and the upper part of the shock-absorbing plate is connected to the support top plate and the second rubber plate through 16 shock-absorbing springs respectively.

[0058] More specifically, Figure 5 As shown, both ends of the shock absorbing spring 62 are connected with threaded connectors 621, respectively, and the shock absorbing plate 61, the support bottom plate 1, the first rubber plate 2, the second rubber plate 4, and the support top plate 5 are respectively provided with threaded mounting holes 611 for mounting with the threaded connectors 621. In this way, it is convenient to install the shock absorbing spring, and its preload force can be adjusted by twisting, so that the shock absorbing spring can realize elastic deformation under the action of external force and have a recovery function.

[0059] In this embodiment, the shock absorbing plate 61, the support bottom plate 1, the support block plate 3 and the support top plate 5 are formed by casting high-performance concrete.

[0060] As an improved implementation, Figure 3 As shown, the support 10 is provided with reinforcing steel bars 7, which sequentially connect the support bottom plate 1, the first rubber plate 2, the support plate 3, the second rubber plate 4 and the support top plate 5. The provision of reinforcing steel bars further enhances the rigidity and shear resistance of the overall connection. These steel bars run through the support and are tightly connected to the support top plate and the support bottom plate to form an integral anchoring system. The reinforcing steel bars not only enhance the overall rigidity of the frame structure, but also ensure the long-term stability under the action of vertical loads and horizontal external forces, forming the basic structure of the device.

[0061] In some specific embodiments, such as Figure 3 and Figure 4 As shown, the reinforcing steel bar 7 comprises a steel cage frame formed by a plurality of vertically distributed steel bars and a plurality of horizontally distributed steel bars, and the lower steel bars of the steel cage frame are connected to the embedded steel bars 21 of the concrete foundation 20 through threaded sleeves 22. In this way, the reinforcing steel bars connect the components in sequence to form an overall frame structure to enhance the overall rigidity and bearing capacity of the shock absorbing device.

[0062] As an example, the thickness of the support bottom plate 1, the first rubber plate 2, the support plate 3, the second rubber plate 4 and the support top plate 5 are all 720mm, and they are all solid cubic structures with the same thickness and the same appearance. In this way, the performance requirements can be met. First, the shear modulus of the rubber plate can reach 0.5MPa~1.5MPa to provide sufficient flexibility to cope with horizontal forces, while ensuring rigidity to support the weight of the structure. Secondly, the tensile strength of the rubber plate is above 15MPa to avoid tearing damage under external forces. Furthermore, the elongation at break of the rubber can reach 300%~500%, ensuring that the elastic deformation ability is maintained under multiple repeated loads such as earthquakes, and having good recovery performance. In addition, the rubber plate needs to have high fatigue resistance and be able to maintain its physical properties without deterioration in more than 1 million cyclic vibrations to meet long-term use requirements; at the same time, the rubber needs to maintain stable performance in an ambient temperature range of -30℃ to 70℃ to adapt to complex external conditions. In order to effectively dissipate vibration energy and slow down its transmission to the upper structure, the rubber plate must also have a damping ratio of 5% to 15%. These performance requirements work together in a logically complementary manner, allowing the rubber plate to effectively absorb energy, reduce vibration transmission and quickly restore to its initial state under the action of external forces, thereby providing key guarantees for the function of the entire shock-absorbing device.

[0063] The dynamic connection between the horizontal shock-absorbing device and the support is achieved through mechanical transmission and mutual cooperation between components, which is used to adjust the adaptability and stability of the horizontal displacement.

[0064] refer to Figure 2 and Figure 3As a further improved embodiment, a buffer mechanism is further connected between the damping plate 61 and the side wall of the support 10. Specifically, Figure 3 As shown, the buffer mechanism includes a guide rod 63, a movable rod 64 and a damping slider 65. The guide rod 63 is distributed in the vertical direction. The two ends of the guide rod 63 are fixedly connected to the first rubber plate 2 and the second rubber plate 4 respectively. The guide rod 63 is equipped with two damping sliders 65 symmetrically distributed up and down and a return spring 66 located between the two damping sliders 65. The damping slider 65 has a sliding slot hole slidably connected to the guide rod 63. Each of the damping sliders 65 is hinged to one of the movable rods 64 through a rotating shaft. The end of the movable rod 64 away from the damping slider 65 is hinged to the shock absorbing plate 61 through a rotating shaft.

[0065] The damping slider can act as a sliding friction damper and is a damping element. The damping slider is mechanically connected to the guide rod through sliding friction. The sliding of the damping slider along the guide rod can dissipate the energy generated by the horizontal external force and limit the amplitude of the horizontal displacement. The transmission and impact of seismic energy are reduced by designing a multi-level energy dissipation mechanism. Among them, the rubber plate dissipates part of the energy through shear deformation, the damping slider uses the friction between the guide rod to convert the vibration energy into heat energy, significantly reducing the vibration amplitude of the structure, and the shock-absorbing spring stores and releases energy through elastic deformation, providing the restoring force and stability of the structure. As shown in expression (3):

[0066] F f =μN (3)

[0067] Among them, F in expression (3) f is the friction damping force, μ is the sliding friction coefficient, and N is the normal force between the damping slider and the guide rod. When an earthquake or external force acts, a horizontal relative displacement occurs between the top plate and the bottom plate of the support, driving the damping slider to slide along the guide rod; at this time, friction is generated between the damping slider and the guide rod during the sliding process, and friction damping converts the kinetic energy caused by the external force into heat energy for dissipation, reducing the amplitude of the vibration energy. The guide rod provides constraints on the movement of the damping slider, ensuring that the system deforms within a controllable range and preventing the device from failing due to nonlinear displacement.

[0068] The movable rod connects the damping plate with the damping spring and the damping slider together to ensure that the motion trajectory under the action of external force is controllable. The guide rod, damping slider, movable rod, damping plate and damping spring work together to form a self-reset system. The elastic characteristics of the damping spring provide a restoring force for the system. When the external force ends, the elastic restoring force provided by the damping spring can restore the support top plate to the initial equilibrium state position, achieve dynamic reset, and maintain the sustainable stability of the system. The connection between the guide rod and the damping slider is designed to ensure energy consumption during sliding and slow down the transmission of vibration to the upper structure.

[0069] In practical applications, the shock-absorbing spring and the damping slider work together. The shock-absorbing spring absorbs and stores energy through elastic deformation to provide restoring force, while the damping slider dissipates the remaining energy to prevent the system from continuing to vibrate, thereby effectively controlling the residual displacement of the structure and the vibration attenuation rate.

[0070] In some specific embodiments, the damping slider 65 is made of polytetrafluoroethylene (PTFE) material and is used in conjunction with the guide rod to achieve stable sliding performance and energy dissipation function. In this way, the wear resistance of the damping slider meets the wear rate of less than 5×10 -6 mm 3 / N·m requirement, suitable for maintaining stable friction performance during long-term sliding, and the compressive strength is between 50MPa and 70MPa, which can withstand the high pressure stress applied by the guide rod without deformation or cracking; the sliding friction coefficient between the damping slider and the guide rod is 0.1 to 0.2, which can dissipate external force energy during sliding while maintaining smooth movement.

[0071] In some embodiments, the contact surface between the guide rod 63 and the damping slider 65 is coated with a lubricant to reduce friction loss and ensure that the damping slider can slide smoothly on the guide rod to form an energy dissipation system.

[0072] In some specific embodiments, reference Figure 2 and Figure 3 Two ends of the guide rod 63 are provided with fixing blocks 67, and the two fixing blocks 67 are fixedly connected to the first rubber plate 2 and the second rubber plate 4 respectively by means of locking screws.

[0073] As a preferred embodiment, Figure 2 As shown, there are two buffer mechanisms between each shock absorbing plate 61 and the support 10 , which are symmetrically arranged in the center between the shock absorbing plate 61 and the support 10 .

[0074] In this embodiment, if Figure 1 and Figure 2 As shown, the support 10 is in a cubic shape as a whole, and the cross-section of the support 10 along the horizontal direction is a square; there are four horizontal shock absorbing devices 6 , which are respectively distributed on the four side walls of the support 10 .

[0075] refer to Figure 3 , further provides an implementation method of the above-mentioned composite tower foundation shock absorbing device, comprising the following steps:

[0076] S1. Concrete foundation construction: In the initial stage of construction, the foundation needs to be leveled and compacted, and the foundation pit is excavated and the concrete foundation is poured according to the design requirements20.

[0077] S2. Reinforcement steel bar construction: Subsequently, the vertically distributed steel bars and the horizontally distributed steel bars are fixedly assembled into a steel cage frame as reinforcement steel bars 7 by binding and welding according to the predetermined layout. The lower steel bars of the steel cage frame are connected to the embedded steel bars 21 of the concrete foundation 20 through threaded sleeves 22. Each node is firmly connected to ensure the overall rigidity.

[0078] S3. Support base plate construction: Build the support base plate construction template, use high-performance concrete to pour and vibrate to make it dense, ensure the strength and durability of the concrete, and form the support base plate 1 after solidification.

[0079] S4. Construction of the first rubber plate: Build a rubber casting template on the support base plate 1. The shape of the template is consistent with the design size of the rubber plate. Roughen the surface of the support base plate 1 to ensure that the subsequent rubber plate and the support base plate fit closely to avoid gaps affecting performance; pour and fill the rubber material and use a vibrator to compact it to ensure that the rubber material can completely fill the template and cover the steel bars to avoid bubbles or uneven density; after the rubber material is poured, perform heat vulcanization treatment according to the material properties to form a first rubber plate 2 with shear performance.

[0080] S5. Support plate construction: build a support plate template on the first rubber plate 2, use high-performance concrete to pour and vibrate to make it dense, ensure the strength and durability of the concrete, and form the support plate 3 after solidification.

[0081] S6, construction of the second rubber plate: build a rubber casting template on the support plate 3, and roughen the surface of the support plate, pour the filling rubber material and vibrate it to make it dense, and form the second rubber plate 4 after hot vulcanization treatment; the specific operation is similar to the construction of the first rubber plate in step S4, ensuring that the rubber plate can absorb horizontal external force through shear deformation.

[0082] S7. Construction of the support top plate: Build a support top plate template on the second rubber plate 4, use high-performance concrete to cast and vibrate to make it dense, ensure the strength and durability of the concrete, and form a support top plate 5 after solidification; the support top plate 5 is connected to the second rubber plate 4 and the support plate 3 by reinforcing steel bars 7 to ensure the overall rigidity of the support 10; after the support top plate 5 is installed, check the contact between the support top plate 5 and the second rubber plate 4 to ensure a close fit without gaps.

[0083] S8, installation of horizontal shock absorbing device: first, use screws to fix the two fixing blocks 67 on the guide rod 63 to the first rubber plate 2 and the second rubber plate 4 respectively, then install each shock absorbing spring 62 to keep the shock absorbing plate 61 elastically connected to the side wall of the support 10, and adjust the pre-tightening force of the shock absorbing spring 62 by twisting the threaded connector 621, so as to complete the installation of the horizontal shock absorbing device 6. Finally, install the tower body structure of the transmission tower on the support top plate 5.

[0084] The principle of the shock absorbing function of the present invention is as follows: when the shock absorbing device is subjected to external force (such as earthquake), the first rubber plate and the second rubber plate between the support top plate and the support bottom plate absorb the initial horizontal energy through shear deformation, thereby realizing the first layer of shock absorbing function. At the same time, the horizontal shock absorbing device allows moderate horizontal displacement through the dynamic connection of mechanical transmission, thereby effectively reducing the direct transmission of energy. During the displacement process, the damping slider generates sliding friction along the guide rod. The friction process converts the vibration energy caused by the external force into heat energy, further dissipates the external force energy, and forms the second layer of friction damping energy dissipation function. Through this mechanical design, passive regulation and energy dissipation of horizontal displacement can be achieved without a central control system. When the external force ends, the shock absorbing spring gradually restores the support top plate to the initial position by providing elastic restoring force, thereby realizing the self-reset function of the system; in this process, the movable rod and the guide rod work together to ensure that the displacement trajectory of the system is controllable and avoid structural instability. Strengthening the steel bars further enhances the overall stiffness of the support to ensure that the device maintains stability and safety under the multi-level shock absorbing function.

[0085] The present invention draws on and expands the core concept of seismic isolation technology, combines the special needs of key infrastructure such as transmission towers, and significantly improves its tensile strength by optimizing the material and structural design of the support. The shock-absorbing device can effectively isolate the external force fluctuations caused by explosion shock waves or strong earthquakes, reduce the damage to the transmission tower structure by external forces, and significantly improve the impact resistance and structural stability of the transmission tower. Through the precise isolation and energy absorption design of external forces, the present invention not only provides reliable safety protection for the transmission tower, but also effectively extends its service life, combines seismic isolation technology with the special mechanical properties of the transmission tower, and optimizes the performance of the device in a complex external force environment. Whether it is a sudden blasting impact or the continuous effect of a strong earthquake, the shock-absorbing device can significantly reduce the vibration response of the transmission tower and avoid power transmission interruption due to equipment damage. This innovative shock-absorbing technology provides a strong guarantee for the stable operation of the power system under extreme conditions, helps to reduce the cost of equipment maintenance and replacement, and improves the overall system operation reliability and safety.

[0086] In addition, the shock absorbing device provided by the present invention can also be used in earthquake-resistant supporting structures in construction, transportation and other aspects in a relatively practical and effective manner.

[0087] The above embodiments are merely illustrative of the concept and technical solution of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

[0088] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A composite tower foundation shock absorbing device, comprising a support, characterized in that: The support includes a horizontally distributed support bottom plate, a first rubber plate, a support plate, a second rubber plate and a support top plate, and the support bottom plate, the first rubber plate, the support plate, the second rubber plate and the support top plate are layered and fixedly connected in sequence from bottom to top; the side wall of the support is provided with a horizontal shock-absorbing device, and the horizontal shock-absorbing device includes a vertically distributed shock-absorbing plate and a plurality of shock-absorbing springs connected between the shock-absorbing plate and the support, the lower part of the shock-absorbing plate is respectively connected to the support bottom plate and the first rubber plate through a plurality of shock-absorbing springs, and the upper part of the shock-absorbing plate is respectively connected to the support top plate and the second rubber plate through a plurality of shock-absorbing springs.

2. The composite tower foundation shock absorbing device according to claim 1 is characterized in that: Both ends of the shock absorbing spring are respectively connected with threaded connectors, and the shock absorbing plate, the support bottom plate, the first rubber plate, the second rubber plate, and the support top plate are respectively provided with threaded mounting holes mounted with the threaded connectors.

3. The composite tower foundation shock absorbing device according to claim 1 is characterized in that: The shock-absorbing plate, the support bottom plate, the support plate and the support top plate are cast by high-performance concrete; the support is plugged with reinforcing steel bars, and the reinforcing steel bars sequentially connect the support bottom plate, the first rubber plate, the support plate, the second rubber plate and the support top plate.

4. The composite tower foundation shock absorbing device according to claim 3 is characterized in that: The reinforcing steel bars include a steel cage frame formed by a plurality of vertically distributed steel bars and a plurality of horizontally distributed steel bars, and the lower steel bars of the steel cage frame are connected to the embedded steel bars of the concrete foundation through threaded sleeves.

5. The composite tower foundation shock absorbing device according to claim 1 is characterized in that: A buffer mechanism is also connected between the shock absorbing plate and the side wall of the support, and the buffer mechanism includes a guide rod, a movable rod and a damping slider. The guide rod is distributed in the vertical direction, and the two ends of the guide rod are respectively fixedly connected to the first rubber plate and the second rubber plate. The guide rod is equipped with two damping sliders symmetrically distributed up and down and a return spring located between the two damping sliders. The damping slider has a sliding slot hole slidably connected to the guide rod, and each of the damping sliders is hinged to one of the movable rods, and the end of the movable rod away from the damping slider is hinged to the shock absorbing plate.

6. The composite tower foundation shock absorbing device according to claim 5 is characterized in that: The damping sliding block is made of polytetrafluoroethylene material.

7. The composite tower foundation shock absorbing device according to claim 5, characterized in that: The contact surface between the guide rod and the damping slider is coated with lubricant.

8. The composite tower foundation shock absorbing device according to claim 5, characterized in that: There are two buffer mechanisms between each shock absorbing plate and the support, which are centrally and symmetrically arranged between the shock absorbing plate and the support.

9. The composite tower foundation vibration reduction device according to any one of claims 1 to 8, characterized in that: The support is in the shape of a cube as a whole, and the cross-section of the support along the horizontal direction is a square; there are four horizontal shock absorbing devices, which are respectively distributed on the four side walls of the support.

10. A method for implementing a composite tower foundation shock absorbing device, characterized in that: The following steps are involved: S1. Concrete foundation construction: level and compact the foundation, excavate the foundation pit and pour the concrete foundation; S2. Reinforcement steel bar construction: assemble the vertically distributed steel bars and the horizontally distributed steel bars into a steel cage frame as reinforcement steel bars, and connect the lower steel bars of the steel cage frame to the embedded steel bars of the concrete foundation through threaded sleeves; S3. Support base plate construction: Build the support base plate construction template, use high-performance concrete to pour and vibrate to compact, and form the support base plate after solidification; S4, construction of the first rubber plate: build a rubber casting template on the support bottom plate, roughen the surface of the support bottom plate, pour the filling rubber material and vibrate it to make it dense, and form the first rubber plate after hot vulcanization treatment; S5. Construction of support plate: Build the support plate template on the first rubber plate, pour and vibrate high-performance concrete to form the support plate after solidification; S6. Construction of the second rubber plate: Build a rubber casting template on the support plate, roughen the surface of the support plate, pour the filling rubber material and vibrate it to make it dense, and form the second rubber plate after hot vulcanization treatment; S7. Construction of the bearing top plate: Build the bearing top plate formwork on the second rubber plate, pour and vibrate high-performance concrete to form the bearing top plate after solidification; S8. Installation of the horizontal shock absorbing device: first, use locking screws to fix the two fixing blocks on the guide rod to the first rubber plate and the second rubber plate respectively, then install each shock absorbing spring to keep the shock absorbing plate connected to the side wall of the support, and adjust the preload force of the shock absorbing spring by twisting the threaded connector to complete the installation of the horizontal shock absorbing device.

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