A concrete pole special for saline-alkali frozen soil

Abstract

The application discloses a concrete electric pole special for saline and frozen soil, and relates to the technical field of non-prestressed electric poles.The concrete electric pole special for saline and frozen soil comprises a reinforced concrete electric pole and a saline and frozen soil layer, the bottom end of the reinforced concrete electric pole extends to the inside of the saline and frozen soil layer, the bottom end of the reinforced concrete electric pole located in the inside of the saline and frozen soil layer is fixedly sleeved with a corrosion-proof sleeve film, and the top end and the bottom of the reinforced concrete electric pole are fixedly installed with sealing end covers.The drainage pipe is arranged, so that water stored in the reinforced concrete electric pole can be drained into the saline and frozen soil layer through the drainage pipe, water in the reinforced concrete electric pole can be timely drained, water can be prevented from gathering at the bottom end of the electric pole, the water content of the soil at the bottom end can be prevented from rising, and problems, such as soil frost heaving, electric pole lifting and tilting, can be avoided.The iron wire ring can improve the gripping force on the gravel buried layer and greatly improve the structural stability between the reinforced concrete electric pole and the gravel buried layer.

Description

Technical Field

[0001] This invention relates to the field of non-prestressed pole technology, specifically to a concrete pole for saline-alkali frozen soil. Background Technology

[0002] Non-prestressed poles, also known as ordinary reinforced concrete poles, are concrete poles in which no artificial tensile stress is applied to the reinforcing steel bars during the manufacturing process. Non-prestressed poles are made by pouring concrete around an ordinary steel reinforcement cage (usually threaded steel bars), and after the concrete solidifies, they are formed, with the concrete and steel bars working together to bear the external load.

[0003] When erecting non-prestressed poles on saline-alkali frozen soil, corrosion prevention and frost resistance are the core of the pole erection operation. This can be achieved by using corrosion-resistant special steel reinforcement frames or high-performance concrete. However, due to the porosity of concrete, capillary effect, and manufacturing process, water often accumulates inside the poles. Drainage channels and outlets need to be designed inside the poles to drain the infiltrated water in a timely manner and prevent internal frost heave. However, when draining non-prestressed poles used in saline-alkali frozen soil, water often seeps into the soil layer at the bottom of the pole, which significantly increases the soil moisture content. After the soil freezes and heaves, it directly squeezes the base of the pole, causing it to crack, tilt, or even collapse. In severe cases, it can also cause the saline soil to dissolve and settle rapidly. Therefore, a special concrete pole for saline-alkali frozen soil is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the problem that current non-prestressed power poles used in saline-alkali frozen soil cause water to seep into the soil at the bottom of the pole, and the soil freezes and expands, directly squeezing the base of the pole, leading to freezing cracks, tilting, or even toppling. In severe cases, it can also cause rapid dissolution and settlement of the saline soil. This invention provides a concrete power pole specifically designed for saline-alkali frozen soil.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution: A concrete pole specifically designed for saline-alkali frozen soil includes a reinforced concrete pole and a saline-alkali frozen soil layer. The bottom end of the reinforced concrete pole extends into the interior of the saline-alkali frozen soil layer. An anti-corrosion sleeve is fixedly fitted to the bottom end of the reinforced concrete pole located inside the saline-alkali frozen soil layer. Sealing end caps are fixedly installed at both the top and bottom of the reinforced concrete pole. A drainage cone is fixedly installed on the top of the lower sealing end cap. Multiple drainage holes are formed around the bottom periphery of the reinforced concrete pole. Sealing sleeves are fixedly installed inside each drainage hole. Horizontally arranged drainage pipes are fixedly installed inside each sealing sleeve. The multiple drainage pipes are evenly distributed around the drainage cone. One end of each drainage pipe extends into the interior of the reinforced concrete pole. Multiple evenly distributed positioning bolts are fixedly installed on the top of each drainage pipe. Multiple wire rings are provided at the bottom end of the saline-alkali frozen soil layer. The size of the multiple wire rings increases sequentially and they are fitted together from small to large. The multiple wire rings are hooked onto the multiple positioning bolts.

[0006] Furthermore, a replacement pit is provided inside the saline-alkali frozen soil layer, and the replacement pit is filled with a gravel layer. The bottom of the reinforced concrete pole and the anti-corrosion film are both located inside the gravel layer.

[0007] Furthermore, a steel reinforcement cage is placed inside the replacement pit, and the gravel burial layer is located inside the steel reinforcement cage.

[0008] Furthermore, an annular cement mold is fixedly installed on the top of the steel bar woven cage, and multiple evenly distributed arc-shaped cement blocks are poured inside the annular cement mold.

[0009] Furthermore, the interior of the replacement pit is filled with a gravel elastic barrier layer, which is located between the steel woven cage and the saline-alkali frozen soil layer.

[0010] Furthermore, the top of the annular cement mold is provided with multiple evenly distributed slots, each slot having an I-shaped partition inserted inside, and each I-shaped partition having a drag hole on its top sidewall.

[0011] Furthermore, the end of the drainage pipe away from the reinforced concrete pole passes through the gravel burial layer, the steel woven cage, and the sand and gravel elastic partition layer in sequence and extends into the interior of the saline-alkali frozen soil layer. The end of the drainage pipe located inside the saline-alkali frozen soil layer is screwed with a threaded external connector, and a filter screen is fixedly installed inside the threaded external connector.

[0012] Furthermore, an L-shaped rod is fixedly installed at one end of the drain pipe inside the reinforced concrete column. An upper pressure block and a lower pressure block are fixedly installed on the top and bottom sides of the L-shaped rod, respectively. Multiple evenly distributed resistive pressure sensors are fixedly installed inside the bottom of the reinforced concrete column. A pressure measuring groove is opened on one side of each resistive pressure sensor. Each resistive pressure sensor is provided with two sensing ends, which are respectively located on the top and bottom inner walls of the pressure measuring groove. Two waterproof membranes are fixedly installed inside the pressure measuring groove, covering the two sensing ends. The top of the L-shaped rod located at the same location extends into the interior of the pressure measuring groove, and the upper pressure block and the lower pressure block are in contact with the two waterproof membranes, respectively.

[0013] The beneficial effects of this invention are as follows: 1. This invention, by setting up a drainage pipe, allows water stored inside the reinforced concrete pole to be discharged into the saline-alkali frozen soil layer. This not only removes water from the reinforced concrete pole in a timely manner, but also prevents water from accumulating at the bottom of the pole, which would lead to an increase in the soil moisture content and cause problems such as soil frost heave, pole lifting, and tilting. The wire ring can improve the gripping force on the gravel layer, greatly improving the structural stability between the reinforced concrete pole and the gravel layer. 2. By setting up a crushed stone layer, the substrates of both the crushed stone layer and the elastic sand and gravel layer are non-frost-swellable materials. The large pores between the crushed stone and sand and gravel particles result in strong water permeability and weak capillary action, making it easy to drain water and preventing water accumulation. Therefore, even when freezing at low temperatures, the large pores are sufficient for ice crystal growth without frost heave, thus preventing pressure and thrust on the internal reinforced concrete pole. This keeps the external load on the bottom of the reinforced concrete pole within a controllable range, effectively improving the frost heave resistance of the concrete pole. 3. By setting up a steel woven cage, the present invention can play a binding role between the crushed stone layer and the elastic gravel layer, and isolate the crushed stone layer and the elastic gravel layer to a certain extent. This prevents the crushed stone pieces inside the crushed stone layer from mixing extensively with the elastic gravel layer due to long-term rainwater erosion and water flow, which would reduce the porosity of the crushed stone layer and the elastic gravel layer, resulting in reduced permeability, increased frost heave sensitivity, and even settlement. 4. By setting up a gravel elastic interlayer, when the gravel elastic interlayer is compressed, the contact points between the gravel particles inside it will undergo slight elastic flattening, giving it a certain degree of elasticity. This can buffer the pressure generated by the frost heave of the saline-alkali frozen soil layer, greatly reducing the impact on the reinforced concrete pole. When the reinforced concrete pole is subjected to instantaneous external loads such as strong winds, the gravel elastic interlayer can provide a very small rebound reaction force in a timely manner, effectively preventing the reinforced concrete pole from tilting. 5. This invention, by setting up a resistive pressure sensor, enables the drainage pipe at the corresponding position to drive the upper or lower pressure block to squeeze the sensing end of the resistive pressure sensor through the waterproof membrane when the reinforced concrete column is subjected to external force. This causes the elastic element at the sensing end to be compressed, resulting in a small deformation or displacement proportional to the magnitude of the pressure. Consequently, under the resistive strain effect of the strain gauge, a change in resistance is generated and converted into an electrical signal output, thereby enabling real-time monitoring of the stress condition of the reinforced concrete column and timely detection of abnormal conditions. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the reinforced concrete electric pole and the steel braided cage of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the steel bar braided cage of the present invention; Figure 4 This is the present invention. Figure 3 Schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the three-dimensional structure of the bottom end of the reinforced concrete electric column of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the steel bar braided cage of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the ring-shaped cement mold of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the I-shaped partition of the present invention; Figure 9 This is a schematic diagram of the internal three-dimensional structure of the bottom end of the reinforced concrete electric column of the present invention; Figure 10 This is a three-dimensional structural diagram of the pressure sensor of the present invention; Figure 11 This is a schematic diagram of the three-dimensional structure of the L-shaped rod of the present invention; Reference numerals: 1. Reinforced concrete pole; 2. Saline-alkali frozen soil layer; 3. Anti-corrosion sleeve; 4. Sealing end cap; 5. Drainage cone; 6. Sealing sleeve; 7. Drainage pipe; 8. Threaded external pipe; 9. Filter screen; 10. Gravel burial layer; 11. Reinforced steel woven cage; 12. Gravel elastic partition; 13. Positioning bolt; 14. Wire ring; 15. Annular cement mold; 16. Arc-shaped cement block; 17. Slot; 18. I-shaped partition; 19. Drag hole; 20. L-shaped rod; 21. Upper pressure block; 22. Lower pressure block; 23. Resistive pressure sensor; 24. Pressure measuring groove; 25. Waterproof membrane. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0017] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0018] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", 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 in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and 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 limiting the present invention.

[0019] like Figures 1 to 11 As shown, a special concrete pole for saline-alkali frozen soil includes a reinforced concrete pole 1 and a saline-alkali frozen soil layer 2, as shown. Figure 1 , Figure 2 As shown, specifically, a replacement pit is opened inside the saline-alkali frozen soil layer 2, and a gravel layer 10 is buried inside the replacement pit. The bottom end of the reinforced concrete pole 1 and the anti-corrosion film 3 are both located inside the gravel layer 10. A steel woven cage 11 is placed inside the replacement pit, and the gravel layer 10 is located inside the steel woven cage 11. A gravel elastic barrier layer 12 is buried inside the replacement pit, and the gravel elastic barrier layer 12 is located between the steel woven cage 11 and the saline-alkali frozen soil layer 2.

[0020] More specifically, during erection, by setting up a gravel burial layer 10, sensitive soil prone to frost heave is first excavated at predetermined locations and around the perimeter of the saline-alkali frozen soil layer 2, creating a circular replacement pit. A layer of sand and gravel elastic barrier 12 is then laid inside the replacement pit. Next, a steel woven cage 11 is placed in the center of the replacement pit, and another layer of gravel burial layer 10 is filled into the steel woven cage 11. Then, the reinforced concrete pole 1 is erected and placed inside the steel woven cage 11, allowing the drainage pipes 7 at the bottom of the steel woven cage 11 to be drilled out from the holes and inserted into the saline-alkali frozen soil layer 2. Gravel burial layer 10 is then filled into the inner ring of the steel woven cage 11. Finally, gravel burial layer 10 is filled into the outer ring of the steel woven cage 11 and the interlayer between the steel woven cage 11 and the saline-alkali frozen soil layer 2. The gravel elastic interlayer 12 is filled in between, and the crushed stone layer 10 and the gravel elastic interlayer 12 are compacted and filled in repeatedly until the crushed stone layer 10 and the gravel elastic interlayer 12 are level with the saline-alkali frozen soil layer 2. The steel woven cage 11 is then erected. In daily use, the base materials of the crushed stone layer 10 and the gravel elastic interlayer 12 are both non-frost-swellable materials. The pores between the crushed stone and gravel particles are large, the water permeability is strong and the capillary effect is weak, so it is easy to drain water and not easy to accumulate water. Therefore, even when freezing at low temperature, the large pores are sufficient for ice crystal growth without frost swelling, and thus will not exert pressure and thrust on the internal reinforced concrete pole 1. This keeps the external load on the bottom of the reinforced concrete pole 1 within a controllable range and effectively improves the frost swelling resistance of the concrete pole. By setting up a steel braided cage 11, the steel braided cage 11 can be positioned between the crushed stone burial layer 10 and the gravel elastic barrier layer 12 to play a binding role, thereby isolating the crushed stone burial layer 10 and the gravel elastic barrier layer 12 to a certain extent. This prevents the crushed stone pieces inside the crushed stone burial layer 10 from mixing extensively with the gravel elastic barrier layer 12 due to long-term rainwater erosion and water flow, which would reduce the porosity of the crushed stone burial layer 10 and the gravel elastic barrier layer 12, resulting in reduced permeability, increased frost heave sensitivity, and even settlement. By setting up a gravel elastic interlayer 12, when the gravel elastic interlayer 12 is compressed, the contact points between the gravel particles inside it will undergo slight elastic flattening, giving it a certain degree of elasticity. This can buffer the pressure generated by the frost heave of the saline-alkali frozen soil layer 2, greatly reducing the impact on the reinforced concrete pole 1. When the reinforced concrete pole 1 is subjected to instantaneous external loads such as strong winds, the gravel elastic interlayer 12 can provide a small rebound reaction force in a timely manner, effectively preventing the reinforced concrete pole 1 from tilting.

[0021] like Figure 1 , Figure 6 As shown, specifically, a ring-shaped cement mold 15 is fixedly installed on the top of the steel reinforcement cage 11, and multiple evenly distributed arc-shaped cement blocks 16 are poured inside the ring-shaped cement mold 15, such as... Figure 7 , Figure 8As shown, the top of the annular cement mold 15 has multiple evenly distributed slots 17, and each slot 17 has an I-shaped partition 18 inserted inside. Each I-shaped partition 18 has a drag hole 19 on its top side wall.

[0022] More specifically, after the installation is completed, by setting up an annular cement mold 15, the upper part of the annular cement mold 15 is above the surface of the saline-alkali frozen soil layer 2 after the gravel burial layer 10 and the sand and gravel elastic partition layer 12 are filled. Cement slurry is poured into the interior of the annular cement mold 15, and multiple I-shaped partitions 18 can be inserted into the slots 17. The structure of the annular cement mold 15 is used to support it, thereby improving its structural strength. The slurry is separated by the numerous I-shaped partitions 18 to form evenly arranged arc-shaped cement blocks 16. After natural air drying, the multiple I-shaped partitions 18 are pulled out from the slots 17 one by one using ropes and traction devices in conjunction with the drag holes 19 on the I-shaped partitions 18. This creates gaps between the arc-shaped cement blocks 16 to provide extra space for thermal expansion and contraction.

[0023] like Figure 3 , Figure 4 , Figure 5 As shown, specifically, the bottom end of the reinforced concrete pole 1 extends into the interior of the saline-alkali frozen soil layer 2. An anti-corrosion sleeve 3 is fixedly fitted to the bottom end of the reinforced concrete pole 1 inside the saline-alkali frozen soil layer 2. Sealing end caps 4 are fixedly installed at both the top and bottom of the reinforced concrete pole 1. Figure 5 , Figure 9 As shown, a drain cone 5 is fixedly installed on the top of the sealing end cap 4 located below. Multiple drainage holes are opened on the bottom periphery of the reinforced concrete electric column 1. A sealing sleeve 6 is fixedly installed inside each drainage hole. A horizontally arranged drain pipe 7 is fixedly installed inside each sealing sleeve 6. Multiple drain pipes 7 are evenly distributed around the drain cone 5. One end of each drain pipe 7 extends into the interior of the reinforced concrete electric column 1. The end of each drain pipe 7 away from the reinforced concrete electric column 1 passes through the gravel burial layer 10, the steel braided cage 11, and the sand and gravel elastic partition layer 12 in sequence and extends into the interior of the saline-alkali frozen soil layer 2. The end of each drain pipe 7 located inside the saline-alkali frozen soil layer 2 is screwed with a threaded external connector 8. A filter screen 9 is fixedly installed inside each threaded external connector 8. Multiple evenly distributed positioning bolts 13 are fixedly installed on the top of each drain pipe 7. Multiple wire rings 14 are provided at the bottom of the saline-alkali frozen soil layer 2. The size of the multiple wire rings 14 increases sequentially and they are connected in sequence from small to large. The multiple wire rings 14 are all hung on the multiple positioning bolts 13.

[0024] More specifically, during normal use, by setting up drainage pipes 7, the water accumulated inside the hollow structure of the reinforced concrete pole 1 will be discharged outward through multiple drainage pipes 7 under the guidance of the discharge cone 5, and then through the threaded external pipe 8 into the saline-alkali frozen soil layer 2. This can not only remove the water in the reinforced concrete pole 1 in time, but also prevent water from accumulating at the bottom of the pole, which would lead to an increase in the soil moisture content at the bottom, and thus cause problems such as soil frost heave, pole lifting, and tilting. The filter screen 9 inside the threaded external pipe 8 can effectively prevent soil particles from the saline-alkali frozen soil layer 2 from invading the interior of the drainage pipe 7 and causing corrosion. The combination of multiple wire rings 14 can improve the gripping force of the bottom of the reinforced concrete pole 1 on the gravel buried layer 10, and greatly improve the structural stability between the reinforced concrete pole 1 and the gravel buried layer 10.

[0025] like Figure 9 , Figure 10 , Figure 11 As shown, specifically, an L-shaped rod 20 is fixedly installed at one end of the drain pipe 7 inside the reinforced concrete column 1. An upper pressure block 21 and a lower pressure block 22 are fixedly installed on the upper and lower sides of the top of the L-shaped rod 20, respectively. Multiple evenly distributed resistive pressure sensors 23 are fixedly installed inside the bottom of the reinforced concrete column 1. A pressure measuring groove 24 is opened on one side of each resistive pressure sensor 23. Each resistive pressure sensor 23 is provided with two sensing ends, which are respectively set on the top and bottom inner walls of the pressure measuring groove 24. Two waterproof membranes 25 are fixedly installed inside the pressure measuring groove 24, covering the two sensing ends. The top of the L-shaped rod 20 located at the same location extends into the interior of the pressure measuring groove 24, and the upper pressure block 21 and the lower pressure block 22 are in contact with the two waterproof membranes 25, respectively.

[0026] More specifically, by setting a resistive pressure sensor 23, when the reinforced concrete column 1 is subjected to external forces such as strong winds or soil frost heave, one or more drainage pipes 7 at the corresponding position will simultaneously squeeze the sealing sleeve 6 and become tilted. This will cause the top of the internal L-shaped rod 20 to move inside the pressure measuring groove 24, so that the upper pressure block 21 or the lower pressure block 22 squeezes the sensing end of the resistive pressure sensor 23 through the waterproof membrane 25. This causes the elastic element of the sensing end to be compressed, resulting in a small deformation or displacement proportional to the pressure. Then, under the resistance strain effect of the resistance strain gauge, a change in resistance is generated and converted into an electrical signal output. This allows for real-time monitoring of the stress condition of the reinforced concrete column 1 and timely detection of abnormal conditions of the reinforced concrete column 1.

[0027] In summary: During erection, firstly, sensitive soil prone to frost heave is excavated at the predetermined location and surrounding area on the saline-alkali frozen soil layer 2, creating a circular replacement pit. A layer of sand and gravel elastic barrier 12 is laid inside the replacement pit. Then, a steel woven cage 11 is placed in the center of the replacement pit, and a layer of crushed stone burial layer 10 is filled into the steel woven cage 11. Afterward, the reinforced concrete pole 1 is erected and placed inside the steel woven cage 11, allowing the drainage pipes 7 at the bottom of the steel woven cage 11 to be drilled out from the holes of the steel woven cage 11 and inserted into the saline-alkali frozen soil layer 2. A crushed stone burial layer is then filled into the inner ring of the steel woven cage 11. 10. Finally, fill the outer ring of the steel woven cage 11 and the interlayer between the steel woven cage 11 and the saline-alkali frozen soil layer 2 with a gravel elastic barrier layer 12. Compact the gravel burial layer 10 and the gravel elastic barrier layer 12, repeating this process several times until the gravel burial layer 10 and the gravel elastic barrier layer 12 are level with the saline-alkali frozen soil layer 2, thus completing the erection of the steel woven cage 11. In daily use, the base materials of the gravel burial layer 10 and the gravel elastic barrier layer 12 are both non-frost-susceptible materials. The gravel and sand particles have large pores, strong permeability, and weak capillary action, making it easy for water to drain and preventing water accumulation. Therefore, even at low temperatures... When freezing, the larger pores allow for ice crystal growth without frost heave, thus preventing pressure and thrust on the internal reinforced concrete pole 1. This keeps the external load on the bottom of the reinforced concrete pole 1 within a controllable range, effectively improving its frost heave resistance. When the gravel elastic interlayer 12 is compressed, the contact points between the gravel particles inside undergo slight elastic flattening, giving it a certain degree of elasticity. This buffers the pressure generated by the frost heave of the saline-alkali frozen soil layer 2, significantly reducing the impact on the reinforced concrete pole 1. When the reinforced concrete pole 1 is subjected to instantaneous external loads such as strong winds... The gravel elastic barrier 12 can provide a small rebound reaction force in a timely manner, effectively preventing the reinforced concrete pole 1 from tilting. The steel braided cage 11 can play a binding role between the gravel buried layer 10 and the gravel elastic barrier 12, and isolate the gravel buried layer 10 and the gravel elastic barrier 12 to a certain extent. This prevents the gravel inside the gravel buried layer 10 from mixing extensively with the gravel elastic barrier 12 due to long-term rainwater erosion and water flow, which would reduce the porosity of the gravel buried layer 10 and the gravel elastic barrier 12, resulting in reduced permeability, increased frost heave sensitivity, and even settlement.

[0028] After the installation is completed and the gravel burial layer 10 and the sand and gravel elastic partition layer 12 are filled, the upper part of the annular cement mold 15 is above the surface of the saline-alkali frozen soil layer 2. Cement slurry is poured into the interior of the annular cement mold 15. Multiple I-shaped partitions 18 can be inserted into the slots 17 to support the annular cement mold 15 using their own structure, thereby improving the structural strength of the annular cement mold 15. Under the separation of numerous I-shaped partitions 18, the slurry forms evenly arranged arc-shaped cement blocks 16. After natural air drying, multiple I-shaped partitions 18 are pulled out of the slots 17 one by one using ropes and traction devices in conjunction with the drag holes 19 on the I-shaped partitions 18, so that there are gaps between each arc-shaped cement block 16 as a margin for thermal expansion and contraction.

[0029] During normal use, the water accumulated inside the hollow structure of the reinforced concrete pole 1 is discharged outward through multiple drainage pipes 7 under the guidance of the discharge cone 5, and then flows through the threaded external pipe 8 into the saline-alkali frozen soil layer 2. This not only removes water from the reinforced concrete pole 1 in a timely manner, but also prevents water from accumulating at the bottom of the pole, which would increase the soil moisture content and cause problems such as soil frost heave, pole lifting, and tilting. The filter screen 9 inside the threaded external pipe 8 effectively prevents soil particles from the saline-alkali frozen soil layer 2 from entering the drainage pipe 7 and causing corrosion. The combination of multiple wire rings 14 can improve the gripping force of the bottom of the reinforced concrete pole 1 on the gravel burial layer 10, greatly improving the adhesion between the reinforced concrete pole 1 and the gravel burial layer. The structural stability between 10 is ensured by the fact that when the reinforced concrete column 1 is subjected to external forces such as strong winds or soil frost heave, one or more drainage pipes 7 at the corresponding positions will simultaneously squeeze the sealing sleeve 6 and become tilted. This will cause the top of the internal L-shaped rod 20 to move inside the pressure measuring groove 24, so that the upper pressure block 21 or the lower pressure block 22 squeezes the sensing end of the resistive pressure sensor 23 through the waterproof membrane 25. This causes the elastic element of the sensing end to be compressed, resulting in a small deformation or displacement proportional to the pressure. Under the resistance strain effect of the resistance strain gauge, a change in resistance is generated and converted into an electrical signal output, thereby enabling real-time monitoring of the stress condition of the reinforced concrete column 1 and timely detection of abnormal conditions of the reinforced concrete column 1.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A concrete utility pole specifically designed for saline-alkali frozen soil, characterized in that, The structure includes a reinforced concrete electric pole (1) and a saline-alkali frozen soil layer (2). The bottom end of the reinforced concrete electric pole (1) extends into the interior of the saline-alkali frozen soil layer (2). An anti-corrosion sleeve (3) is fixedly fitted onto the bottom end of the reinforced concrete electric pole (1) located inside the saline-alkali frozen soil layer (2). Sealing end caps (4) are fixedly installed at both the top and bottom of the reinforced concrete electric pole (1). A drain cone (5) is fixedly installed on the top of the lower sealing end cap (4). Multiple drainage holes are opened around the bottom end of the reinforced concrete electric pole (1). Sealing sleeves (6) are fixedly installed inside each drainage hole. The sealing sleeve (6) is fixedly installed with horizontally arranged drain pipes (7). Multiple drain pipes (7) are evenly distributed around the discharge cone (5). One end of each drain pipe (7) extends into the interior of the reinforced concrete electric column (1). Multiple evenly distributed positioning bolts (13) are fixedly installed on the top of each drain pipe (7). Multiple wire rings (14) are provided at the bottom of the saline-alkali frozen soil layer (2). The size of the multiple wire rings (14) increases sequentially and they are connected sequentially from small to large. The multiple wire rings (14) are all hung on the multiple positioning bolts (13).

2. The concrete pole for saline-alkali frozen soil according to claim 1, characterized in that, The saline-alkali frozen soil layer (2) has a replacement pit inside, and the replacement pit is filled with a gravel layer (10). The bottom of the reinforced concrete electric pole (1) and the anti-corrosion film (3) are both located inside the gravel layer (10).

3. A concrete pole specifically designed for saline-alkali frozen soil according to claim 2, characterized in that, The replacement pit contains a steel reinforcement cage (11), and the gravel burial layer (10) is located inside the steel reinforcement cage (11).

4. A concrete pole specifically designed for saline-alkali frozen soil according to claim 3, characterized in that, The top of the steel braided cage (11) is fixedly installed with an annular cement mold (15), and the interior of the annular cement mold (15) is filled with a number of evenly distributed arc-shaped cement blocks (16).

5. A concrete pole specifically designed for saline-alkali frozen soil according to claim 3, characterized in that, The replacement pit is filled with a gravel elastic barrier layer (12), which is located between the steel woven cage (11) and the saline-alkali frozen soil layer (2).

6. A concrete pole specifically designed for saline-alkali frozen soil according to claim 4, characterized in that, The top of the annular cement mold (15) is provided with a plurality of evenly distributed slots (17), and each slot (17) is fitted with an I-shaped partition (18), and each I-shaped partition (18) has a drag hole (19) on its top side wall.

7. A concrete pole specifically designed for saline-alkali frozen soil according to claim 5, characterized in that, The end of the drainage pipe (7) away from the reinforced concrete electric column (1) passes through the gravel burial layer (10), the steel woven cage (11) and the sand and gravel elastic partition (12) in sequence and extends into the interior of the saline-alkali frozen soil layer (2). The end of the drainage pipe (7) located inside the saline-alkali frozen soil layer (2) is screwed with a threaded external pipe (8), and a filter screen (9) is fixedly installed inside the threaded external pipe (8).

8. A concrete pole specifically designed for saline-alkali frozen soil according to claim 1, characterized in that, The drain pipe (7) is fixedly installed with an L-shaped rod (20) at one end inside the reinforced concrete column (1). An upper pressure block (21) and a lower pressure block (22) are fixedly installed on the top and bottom sides of the L-shaped rod (20), respectively. Multiple uniformly distributed resistive pressure sensors (23) are fixedly installed inside the bottom of the reinforced concrete column (1). A pressure measuring groove (24) is opened on one side of each resistive pressure sensor (23). Each resistive pressure sensor (23) is provided with two sensing ends. The two sensing ends are respectively set on the top and bottom inner walls of the pressure measuring groove (24). Two waterproof membranes (25) are fixedly installed inside the pressure measuring groove (24). The two waterproof membranes (25) cover the two sensing ends. The top of the L-shaped rod (20) located at the same place extends into the interior of the pressure measuring groove (24). The upper pressure block (21) and the lower pressure block (22) are in contact with the two waterproof membranes (25), respectively.

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