Anti-seismic and anti-skid electric power iron tower prefabricated concrete foundation structure

Abstract

The utility model relates to the technical field of iron tower precast concrete, in particular to an anti-seismic and anti-skid electric power iron tower precast concrete foundation structure which comprises a concrete foundation body and connecting supporting columns. A bump, an extension rod and a clinging plate in the anti-skid positioning assembly, and a rubber plate, a shock-absorbing damper, a supporting plate, a connecting column and the like in the shock-absorbing buffering assembly are arranged; through the mutual matching relation between the connection of the convex block and the extension rod, the vibration energy absorption of the rubber plate and the shock absorption damper, the load transmission of the supporting plate and the connecting column and other components, the convex block can be embedded into a foundation soil layer through the inverted convex structure to form mechanical anchoring; the rubber plate buffers earthquakes or dynamic loads through elastic deformation and the shock absorption damper through the energy dissipation effect, and then the effects that the device can enhance the friction force and anchoring force of the soil body through the anti-skid positioning assembly, reduce vibration impact through the shock absorption buffering assembly and effectively improve the anti-seismic performance and anti-sliding capacity of the electric power iron tower foundation are achieved.

Description

Technical Field

[0001] This application relates to the technical field of precast concrete for power towers, and in particular to a precast concrete foundation structure for earthquake-resistant and anti-slip power towers. Background Technology

[0002] Precast concrete foundation structures for power transmission towers refer to a system of concrete foundation components that are prefabricated in a factory and assembled on-site. They mainly consist of precast base plates, columns, and embedded parts, which are reliably connected to form a whole to support the tower. Their characteristics include factory production to ensure quality, shortening the on-site construction cycle, and reducing environmental impact. They are suitable for scenarios in power transmission line projects that require standardized and prefabricated foundation construction, and combine economy and stability.

[0003] A search revealed Chinese Patent Publication No. CN214657183U, which discloses a precast concrete tower foundation. The foundation includes a load-bearing and stable base, a connecting support column installed on the base for connecting and fixing the tower, a locking groove on the connecting support column, and connecting bolts installed in the locking groove for connecting and fixing the tower. The load-bearing and stable base, the connecting support column, and the locking groove are integrally formed using reinforced concrete. This invention, through the use of precast reinforced concrete tower foundations, allows for timely installation of power line towers during construction. Only a foundation pit needs to be dug, the precast concrete tower foundation buried within the pit, and backfilled and compacted. This reduces the time required for concrete curing, thereby improving the efficiency of tower installation and accelerating the construction progress of power line erection.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following defects: When existing precast concrete foundation structures encounter vibration loads such as earthquakes, strong winds, or long-term dynamic loads, the lack of seismic design can easily lead to foundation soil resonance, excessive displacement, or cracking. Under complex geological conditions such as rainwater soaking, freeze-thaw cycles, and high groundwater levels, insufficient anti-slip measures can easily lead to decreased anti-slip properties, component sliding, and weakened stress, affecting the safety and reliability of use. Utility Model Content

[0005] In order to solve the problems mentioned in the background art, this application provides a seismic and anti-slip precast concrete foundation structure for power transmission towers.

[0006] This application provides a seismic-resistant and anti-slip precast concrete foundation structure for power transmission towers, employing the following technical solution: A seismic-resistant and anti-slip precast concrete foundation structure for power transmission towers includes a concrete foundation body and connecting supports. The connecting supports are installed on the top of the concrete foundation body. An anti-slip positioning component is installed on the bottom of the concrete foundation body. The anti-slip positioning component includes protrusions, with four sets of protrusions arranged at equal intervals. Extension rods are provided on the outer side of each protrusion, with several extension rods arranged at equal intervals. A bonding plate is installed on the bottom of each protrusion. A shock-absorbing and buffering component is installed on the bottom of the concrete foundation body. The shock-absorbing and buffering component includes a rubber plate, with a support plate installed on the bottom of the rubber plate. A shock-absorbing damper is installed on the top of the support plate. A connecting column is installed on the bottom of the support plate, and the bottom of the connecting column is connected to the top of the bonding plate.

[0007] Through the above scheme, the inverted convex structure of the protrusion can be embedded into the foundation soil layer, and the soil's own weight and lateral pressure form a mechanical interlock to prevent horizontal slippage of the foundation. The four sets of equidistant distribution ensure uniform anti-slip force. The extension rod expands the contact range with the soil and enhances the soil friction. The bonding plate is tightly attached to the foundation surface, improving the fit between the foundation and the soil layer. The rubber plate absorbs vibration energy through elastic deformation, and the shock absorber dissipates vibration kinetic energy, reducing the impact of dynamic loads such as earthquakes on the foundation. The support plate and connecting column evenly transfer the buffered load to the bonding plate and the foundation.

[0008] Optionally, the rubber sheet is internally fitted with reinforcing ribs, and the extension rod is externally fitted with prestressed steel strands, with the other end of the prestressed steel strands being fitted with a protrusion.

[0009] Through the above scheme, the reinforcing ribs can enhance the structural strength and deformation resistance of the rubber sheet, preventing the rubber sheet from breaking or excessively deforming during vibration. The prestressed steel strands enhance the connection stiffness between the extension rod and the protrusion through pre-tension stress, thereby enhancing the synergistic stress performance of the two and ensuring stability under complex loads.

[0010] Optionally, the support plate is made of fiber-reinforced concrete precast slab, the support plate is equipped with mesh steel bars, and a connecting block is installed on the outside of the concrete foundation body. Several connecting blocks are provided and are arranged at equal intervals.

[0011] Through the above scheme, fiber-reinforced concrete precast slabs combined with mesh steel bars can significantly improve the compressive and crack resistance of the support slab, adapt to the complex stress environment at the bottom of the foundation, and the connecting blocks provide connection nodes for external components, which facilitates the formation of an overall structure in which multiple components work together to bear the load, and enhances the anchoring effect between the foundation and the surrounding soil.

[0012] Optionally, a connecting plate is installed between the concrete foundation bodies, and a rubber block is installed at the bottom of the connecting plate. Several rubber blocks are provided, and the rubber blocks are arranged at equal intervals.

[0013] Through the above scheme, the rubber blocks absorb vibration energy by utilizing elastic deformation, reducing the impact of earthquakes or dynamic loads on the concrete foundation. The equidistant distribution of multiple rubber blocks can evenly disperse the load, avoid local stress concentration, and improve the seismic buffering capacity of the foundation structure.

[0014] Optionally, the surface of the extension rod is fitted with a threaded anti-slip ring, and a plurality of threaded anti-slip rings are provided, with the plurality of threaded anti-slip rings being arranged at equal intervals.

[0015] Through the above scheme, the threaded anti-slip ring increases the friction between the extension rod and the surrounding soil through the surface threads, effectively preventing the extension rod from slipping in the soil. The equidistantly distributed thread structure can evenly transmit the anti-slip force, enhance the interlocking effect with the foundation, and improve the overall anti-slip performance.

[0016] Optionally, a metal anchor is installed on the outer side of the extension rod, and a groove is provided at the bottom of the fastening plate. Several grooves are provided, and the grooves are arranged at equal intervals.

[0017] Through the above scheme, the metal anchors penetrate deep into the foundation soil layer, transferring the load of the extension rod to the deep stable soil, enhancing the anchoring effect. The groove at the bottom of the plate can increase the contact area with the foundation, and the subsequent high-strength bonding layer can further enhance the bond between the foundation and the soil, preventing the foundation from sliding as a whole.

[0018] Optionally, the inner wall of the groove is filled with a high-strength adhesive layer, and an inverted protrusion is installed at the bottom of the rubber block.

[0019] Through the above scheme, after the high-strength adhesive layer fills the groove, the bonding plate can be tightly bonded to the foundation soil. The inverted protrusions at the bottom of the rubber block can effectively enhance the tightness of the connection between the rubber block and the ground, so that the rubber block can effectively buffer.

[0020] Optionally, a high-strength steel bar is installed on the outside of the connecting block, and the other end of the high-strength steel bar is installed with a metal anchor.

[0021] Through the above scheme, the high-strength steel bars connect the connecting blocks and the metal anchors to form a force transmission path that runs through the support plate and the anti-slip positioning components. The load on the top of the foundation is transferred to the deep soil through the support plate, the shock absorber, the connecting column and other components. This structure enhances the collaborative performance between the components and makes the seismic and anti-slip functions form an organic whole.

[0022] In summary, this application includes the following beneficial technical effects:

[0023] 1. This utility model, through the arrangement of components such as protrusions, extension rods, and fastening plates in the anti-slip positioning assembly, and rubber plates, dampers, support plates, and connecting columns in the shock-absorbing and buffering assembly, achieves the following: the protrusions can be mechanically anchored into the foundation soil through their inverted convex structure; the rubber plates buffer earthquakes or dynamic loads through elastic deformation and the dampers buffer energy dissipation. This results in the device effectively improving the seismic performance and anti-slip capability of power transmission tower foundations by enhancing soil friction and anchoring force through the anti-slip positioning assembly and reducing vibration impact through the shock-absorbing and buffering assembly.

[0024] 2. This utility model, through the setting of components such as reinforcing ribs, prestressed steel strands, fiber-reinforced concrete precast slabs, mesh reinforcement, high-strength steel bars, and metal anchors, achieves the following: reinforcing ribs enhance the strength of the rubber plate; prestressed steel strands improve the connection stiffness between the extension rod and the protrusion; fiber-reinforced concrete combined with mesh reinforcement increases the load-bearing capacity of the support plate; and high-strength steel bars connect to metal anchors to form a through-path force transmission. The interrelationship among these components allows each part to optimize the overall stress on the foundation through material reinforcement and structural synergy. This results in the device significantly improving the crack resistance, load transfer efficiency, and long-term stability of the foundation structure under complex geological conditions through the integrated design of multi-component material reinforcement and force transmission paths. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the split structure in an embodiment of this application;

[0027] Figure 3 This is a partial structural diagram of an embodiment of this application;

[0028] Figure 4 This is a partial structural diagram of the extension rod of the part in the embodiment of this application.

[0029] Reference numerals: 1. Concrete foundation body; 2. Connecting column; 3. Anti-slip positioning component; 31. Protrusion; 32. Extension rod; 33. Fitting plate; 4. Shock absorption and buffer component; 41. Rubber plate; 42. Support plate; 43. Shock absorber; 44. Connecting column; 5. Reinforcing rib; 6. Prestressed steel strand; 7. Connecting block;

[0030] 8. Connecting plate; 9. Rubber block; 10. Threaded anti-slip ring; 11. Metal anchor; 12. Groove; 13. High-strength adhesive layer; 14. Inverted protrusion; 15. High-strength steel bar. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0032] This application discloses a precast concrete foundation structure for earthquake-resistant and slip-resistant power towers.

[0033] Please see Figures 1 to 3 A precast concrete foundation structure for earthquake-resistant and anti-slip power transmission towers includes a concrete foundation body 1 and connecting columns 2. The connecting columns 2 are installed on the top of the concrete foundation body 1. An anti-slip positioning component 3 is installed on the bottom of the concrete foundation body 1. The anti-slip positioning component 3 includes protrusions 31, four sets of which are equally spaced. Several extension rods 32 are provided on the outer side of the protrusions 31, and these extension rods 32 are equally spaced. The extension rods 32 are reinforced concrete rods with a diameter of 80-120mm. A fastening plate 33 is installed on the bottom of the protrusions 31. The fastening plate 33 is a precast concrete slab with a thickness of 10-15cm. The surface roughness is not less than Ra1.6. The bottom of the concrete foundation body 1 is equipped with a shock-absorbing buffer component 4. The shock-absorbing buffer component 4 includes a rubber plate 41. The rubber plate 41 is made of neoprene rubber with a thickness of 5-8cm. It has a cross-distributed steel wire mesh reinforcement layer inside. The bottom of the rubber plate 41 is equipped with a support plate 42. The top of the support plate 42 is equipped with a shock-absorbing damper 43. The damper is a viscous fluid damper with a damping coefficient of 20-30kN·s / m. The bottom of the support plate 42 is equipped with a connecting column 44. The connecting column 44 is a steel-reinforced concrete column with a side length of 20cm. It is evenly distributed along the bottom edge of the concrete foundation body. The bottom of the connecting column 44 is installed with the top of the fastening plate 33.

[0034] Please see Figures 2 to 4 The rubber sheet 41 is internally fitted with reinforcing ribs 5, which are Φ10mm hot-dip galvanized steel bars with a cross angle of 60° and a spacing of 20cm. The extension rod 32 is externally fitted with prestressed steel strands 6, which have a tension stress of 100-150MPa. Both ends are fixed to the main reinforcement of the protrusion 31 and the extension rod 32 by anchors. The other end of the prestressed steel strands 6 is installed with the protrusion 31. The support plate 42 is a fiber-reinforced concrete precast slab with a mesh of steel bars inside. The concrete foundation body 1 is externally fitted with connecting blocks 7, which are arranged in a plurality of equal distances. Connecting plates 8 are installed between the concrete foundation bodies 1. Rubber blocks 9 are installed at the bottom of the connecting plates 8, which are arranged in a plurality of equal distances. The rubber blocks 9 are made of natural rubber.

[0035] Please see Figures 2 to 4The extension rod 32 is equipped with a threaded anti-slip ring 10. Several threaded anti-slip rings 10 are provided and are arranged at equal intervals. A metal anchor 11 is installed on the outer side of the extension rod 32. A groove 12 is provided at the bottom of the fastening plate 33. Several grooves 12 are provided and are arranged at equal intervals. The inner wall of the groove 12 is filled with a high-strength adhesive layer 13, which is an epoxy resin adhesive. An inverted protrusion 14 is installed at the bottom of the rubber block 9. A high-strength steel bar 15 is installed on the outer side of the connecting block 7. The other end of the high-strength steel bar 15 is installed with the metal anchor 11.

[0036] The implementation principle of the earthquake-resistant and anti-slip precast concrete foundation structure for power towers in this application embodiment is as follows:

[0037] The various loads borne by the power tower, including its own weight, wind force, and possible seismic forces, will first converge on the connecting support 2. The connecting support 2 is installed on the top of the concrete foundation body 1 and serves as the primary channel for load transfer, transmitting these loads vertically downward to the concrete foundation body 1.

[0038] When subjected to vibration load, the rubber plate 41 at the bottom of the concrete foundation body 1 deforms due to its good elastic properties. This elastic deformation can effectively absorb a large amount of vibration energy, acting like a buffer pad to reduce the direct impact of vibration on the concrete foundation body 1. The reinforcing ribs 5 distributed crosswise inside the rubber plate 41 greatly enhance the structural strength of the rubber plate 41, making it less prone to breakage or excessive deformation during repeated vibration, thus ensuring that the rubber plate 41 can continuously and stably play a shock absorption role.

[0039] The damper 43 installed on the top of the support plate 42 works together with the rubber plate 41. When vibration is transmitted, the special structure inside the damper 43 will generate friction and energy dissipation effect, converting the kinetic energy generated by the vibration into heat energy and other forms of energy and dissipating them, further weakening the intensity and duration of the vibration, thereby reducing the impact of dynamic loads such as earthquakes on the foundation and ensuring the stability of the concrete foundation body 1.

[0040] The load buffered by the rubber plate 41 and the shock absorber 43 is transferred to the support plate 42. The support plate 42 is made of fiber-reinforced concrete precast plate and equipped with mesh steel bars. This structure gives it high compressive and crack resistance, and can evenly distribute the load it bears, avoiding stress concentration. The connecting column 44 at the bottom of the support plate 42 stably transfers the load on the support plate 42 to the close plate 33.

[0041] The concrete foundation body 1 has four sets of equally spaced protrusions 31 at the bottom. Their special inverted protrusion structure can be embedded into the foundation soil layer during foundation installation. Under the action of soil self-weight and lateral pressure, the protrusions 31 form a tight mechanical interlock with the surrounding soil, providing strong resistance to horizontal sliding. Several equally spaced extension rods 32 installed on the outside of the protrusions 31 expand the contact range with the soil. The threaded anti-slip rings 10 on the surface of the extension rods 32 further increase the friction with the soil. At the same time, the extension rods 32 and the protrusions 31 are connected by prestressed steel strands 6. The prestress applied by the prestressed steel strands 6 improves the connection stiffness of the two, so that they can work together better when under force, enhancing the stability and reliability of the entire anti-slip positioning component 3.

[0042] The bottom of the protrusion 31 has a fastening plate 33 that is in close contact with the foundation surface. Several equally spaced grooves 12 on its bottom are tightly bonded to the foundation soil after being filled with a high-strength bonding layer 13. This not only increases the contact area between the foundation and the foundation, but also further enhances the bond between the foundation and the soil through chemical bonding, effectively preventing the overall sliding of the foundation.

[0043] The metal anchor 11 installed on the outside of the extension rod 32 penetrates into the foundation soil layer, transferring the load borne by the extension rod 32 to the deep stable soil. One end of the high-strength steel bar 15 on the outside of the connecting block 7 is connected to the connecting block 7, and the other end is installed with the metal anchor 11, forming a force transmission path that runs through the support plate 42, protrusion 31, fastening plate 33 and extension rod 32, so that the load at the top of the foundation can be transferred to the deep soil through each component, further improving the anchoring effect of the foundation.

[0044] The connecting plates 8 and the equally spaced rubber blocks 9 installed between the concrete foundation bodies 1 also play an important role. During vibration, the rubber blocks 9 absorb additional vibration energy by using their own elastic deformation. Multiple rubber blocks 9 evenly distribute the load, avoid local stress concentration, and further improve the seismic buffering capacity of the foundation structure.

[0045] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An anti-seismic and anti-skid prefabricated concrete foundation structure for electric power towers, comprising a concrete foundation body (1) and connecting pillars (2), characterized in that: The connecting support column (2) is installed on the top of the concrete foundation body (1). An anti-slip positioning component (3) is installed on the bottom of the concrete foundation body (1). The anti-slip positioning component (3) includes protrusions (31), four sets of which are equidistant. Extension rods (32) are provided on the outer side of each protrusion (31), and several extension rods (32) are equidistant. A fastening plate (33) is installed at the bottom of the block (31), and a shock-absorbing buffer assembly (4) is installed at the bottom of the concrete foundation body (1). The shock-absorbing buffer assembly (4) includes a rubber plate (41), a support plate (42) is installed at the bottom of the rubber plate (41), a shock-absorbing damper (43) is installed at the top of the support plate (42), and a connecting column (44) is installed at the bottom of the support plate (42). The bottom of the connecting column (44) is installed with the top of the fastening plate (33).

2. The shock resistant, slip resistant, precast concrete foundation structure for electrical towers of claim 1, wherein: The rubber sheet (41) is equipped with reinforcing ribs (5) inside, and the extension rod (32) is equipped with prestressed steel strands (6) on the outside. The other end of the prestressed steel strands (6) is installed with the protrusion (31).

3. The shock resistant, slip resistant, precast concrete foundation structure for electrical towers of claim 1, wherein: The support plate (42) is made of fiber-reinforced concrete precast plate. The support plate (42) is equipped with mesh steel bars. Connecting blocks (7) are installed on the outside of the concrete foundation body (1). There are several connecting blocks (7), and the several connecting blocks (7) are arranged at equal distances.

4. The shock resistant, slip resistant, precast concrete foundation structure for electrical towers of claim 3, wherein: A connecting plate (8) is installed between the concrete foundation bodies (1). A rubber block (9) is installed at the bottom of the connecting plate (8). There are several rubber blocks (9), and the several rubber blocks (9) are arranged at equal distances.

5. The shock resistant, slip resistant, precast concrete foundation structure for electrical towers of claim 1, wherein: The surface of the extension rod (32) is equipped with a threaded anti-slip ring (10), and a plurality of threaded anti-slip rings (10) are provided, and the plurality of threaded anti-slip rings (10) are arranged at equal intervals.

6. The shock resistant, slip resistant, precast concrete foundation structure for electrical towers of claim 4, wherein: Metal anchors (11) are installed on the outside of the extension rod (32), and a groove (12) is provided at the bottom of the fastening plate (33). There are several grooves (12), and the grooves (12) are arranged at equal distances.

7. The shock resistant, slip resistant, precast concrete foundation structure for electrical towers of claim 6, wherein: The inner wall of the groove (12) is filled with a high-strength adhesive layer (13), and the bottom of the rubber block (9) is fitted with an inverted protrusion (14).

8. The shock resistant, slip resistant, precast concrete foundation structure for electrical towers of claim 6, wherein: A high-strength steel bar (15) is installed on the outside of the connecting block (7), and the other end of the high-strength steel bar (15) is installed with a metal anchor (11).

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