Adjustable screw anchor and adjusting method thereof

Abstract

The invention discloses an adjustable spiral anchor and an adjusting method thereof.The adjustable spiral anchor comprises a spiral anchor steel pile and a steel bearing platform, the top of the spiral anchor steel pile is fixedly connected with a first crossover flange, the top of the first crossover flange is connected with the bottom of the steel bearing platform in a matched mode through a bolt, and the top of the steel bearing platform is fixedly connected with a second crossover flange; and the second crossover flange is fixedly connected with a connecting flange of an external tower foot through a bolt. Through cooperation of the spiral anchor steel pile, the first crossover flange, the steel bearing platform and the second crossover flange and by means of bolt connection, stable connection of the spiral anchor and the external tower foot is achieved, the construction efficiency is improved, the construction period is shortened, communication tower mast foundation construction is completed conveniently and rapidly, and follow-up maintenance and adjustment are facilitated.

Description

Technical Field

[0001] This invention relates to the field of mobile communication technology, specifically to an adjustable spiral anchor and its adjustment method. Background Technology

[0002] Communication towers are an important infrastructure for mobile communication networks, and the quality of their foundation construction directly affects their stability and safety.

[0003] Traditional construction methods for communication tower mast pile foundations typically involve excavating foundation pits and pouring concrete, which have numerous drawbacks. From a cost perspective, traditional pile foundations require large quantities of concrete, steel bars, and other materials, resulting in high material procurement costs. Furthermore, the excavation and concrete pouring processes are complex, leading to relatively high labor costs. In terms of construction time, the long curing period required after concrete pouring extends the overall construction cycle and impacts the construction progress of the communication tower mast. In addition, traditional pile foundation construction requires extensive excavation of foundation pits, causing significant damage to the surrounding soil structure and vegetation, resulting in a substantial environmental impact and contradicting current green construction principles.

[0004] The spiral anchor steel pile foundation consists of anchor rods, anchor discs, anchor heads, and pile caps. Its force-bearing mechanism is similar to that of a screw—resisting loads through the interlocking force between the spiral blades and the soil. Construction requires no large-scale excavation, minimizing soil disturbance and fully utilizing the strength of the original soil. This technology has been applied and its advantages verified in fields such as power and photovoltaic power generation, including low steel consumption, short construction period, low cost, small footprint, and outstanding environmental performance.

[0005] However, the application of helical anchor steel pile foundations in the telecommunications industry is still in the exploratory stage, lacking mature industry standards, design specifications, and construction experience, which limits their promotion in telecommunications tower and mast foundations. Therefore, researching adjustable helical anchor technology suitable for the telecommunications field, considering the load characteristics and construction environment of telecommunications towers and masts, is of great significance for solving the drawbacks of traditional pile foundations and improving the efficiency of telecommunications infrastructure construction. Summary of the Invention

[0006] To address the problems mentioned in the background art, the present invention aims to provide an adjustable spiral anchor and its adjustment method, which has the advantages of optimizing the construction process of tower mast foundations, reducing engineering costs and carbon emissions, and solving the problems of high cost, long cycle and large environmental impact in the traditional pile foundation construction of existing communication tower masts.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an adjustable helical anchor, comprising a helical anchor steel pile and a steel bearing platform, wherein a first conversion flange is fixedly connected to the top of the helical anchor steel pile, and the top of the first conversion flange is connected to the bottom of the steel bearing platform by bolts; a second conversion flange is fixedly connected to the top of the steel bearing platform, and the second conversion flange is fixedly connected to the connecting flange of the external tower foot by bolts.

[0008] As a preferred embodiment of the present invention, the surface of the spiral anchor steel pile is provided with at least five spiral blades, and the positions of the at least five spiral blades are distributed at intervals along the length direction of the spiral anchor steel pile. The spiral blades and the spiral anchor steel pile are made as an integral structure. The spiral blades are used to generate interlocking force with the soil to resist upward pull-out force, bear vertical loads, and cooperate with the pile body to resist horizontal loads.

[0009] As a preferred embodiment of the present invention, both the first and second conversion flanges are provided with bolt holes that match the bolts, and the number of bolt holes is at least four, and the positions of the at least four bolt holes are evenly distributed.

[0010] As a preferred embodiment of the present invention, the steel support is rectangular in shape and made of high-strength steel. Both the upper and lower surfaces of the steel support are provided with connecting parts that cooperate with the first conversion flange and the second conversion flange. The surface of the connecting parts is provided with through holes corresponding to the bolt holes.

[0011] As a preferred embodiment of the present invention, two flat irons are respectively provided at the bottom of the steel bearing platform. One flat iron is welded to the steel bearing platform and the spiral anchor steel pile at both ends, and the other flat iron is welded to the spiral anchor steel pile at one end, and the other end of the flat iron extends out of the ground and is used in conjunction with the grounding wire of the external equipment.

[0012] As a preferred embodiment of the present invention, the gap between the first conversion flange and the steel bearing platform is filled with micro-expanded fine stones.

[0013] As a preferred embodiment of the present invention, the following steps are included:

[0014] S1: Conduct a geological survey of the construction site to determine soil type, bearing capacity and other parameters. Based on the survey results and the load requirements of the external tower feet, select appropriate specifications of spiral anchor steel piles, first conversion flange, steel foundation, second conversion flange, flat iron and micro-expansion fine stone and other components, and prepare special construction machinery and equipment, bolts and other connecting parts, and then execute S2.

[0015] S2: Use specialized mechanical equipment to drive the helical anchor steel pile into the ground by screwing it in. By controlling the torque of the equipment, ensure that the helical blades on the helical anchor steel pile are screwed into the soil to a preset depth. During the implantation process, monitor the verticality of the helical anchor steel pile in real time. If any deviation occurs, adjust it in time. Then execute S3.

[0016] S3: After the spiral anchor steel pile is implanted, weld and fix the two flat irons respectively. Weld the two ends of one flat iron to the bottom of the steel foundation and the spiral anchor steel pile respectively. Weld one end of the other flat iron to the spiral anchor steel pile and extend the other end above the ground level for connection with the grounding wire of the external equipment. Then execute S4.

[0017] S4: Secure the first conversion flange to the connection part at the bottom of the steel foundation with bolts to ensure a tight connection. Then, fill the gap between the first conversion flange and the steel foundation with micro-expansion fine stones to enhance the stability and load-bearing capacity of the connection. After that, secure the second conversion flange to the connection flange of the external tower foot with bolts to complete the assembly of the entire adjustable spiral anchor and the external tower foot.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. This invention achieves a stable connection between the spiral anchor and the external tower foot by using the cooperation of the spiral anchor steel pile, the first conversion flange, the steel bearing platform and the second conversion flange, and by using bolt connection. This improves construction efficiency, shortens the construction cycle, and facilitates the quick and easy completion of the communication tower mast foundation construction, making subsequent maintenance and adjustment easier.

[0020] 2. The spiral anchor of this invention eliminates the need for extensive excavation during construction, reducing earthwork excavation and backfilling, simplifying the construction process, and minimizing energy consumption, thus reducing carbon emissions and aligning with green and environmentally friendly development principles. Regarding steel usage, it utilizes high-strength steel and features a rational structural design, minimizing material consumption while ensuring load-bearing capacity. In terms of cost, considering the combined costs of materials, labor, time, and machinery, its overall cost is significantly lower than traditional pile foundations, demonstrating a clear cost advantage. This spiral anchor promotes the innovative application of spiral anchor pile technology in the field of communication infrastructure, enriches the technical means of infrastructure construction in the communication industry, and provides strong support for the sustainable development of the industry. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the spiral anchor steel pile structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the steel bearing platform of the present invention.

[0024] In the diagram: 1. Spiral anchor steel pile; 2. First conversion flange; 3. Steel foundation; 4. Second conversion flange; 5. Spiral blade; 6. Bolt hole; 7. Through hole; 8. Flat iron; 9. Micro-expansion fine stone. Detailed Implementation

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0026] like Figures 1 to 3 As shown, the present invention provides an adjustable spiral anchor and its adjustment method, including a spiral anchor steel pile 1 and a steel base 3. A first conversion flange 2 is fixedly connected to the top of the spiral anchor steel pile 1, and the top of the first conversion flange 2 is connected to the bottom of the steel base 3 by bolts. A second conversion flange 4 is fixedly connected to the top of the steel base 3, and the second conversion flange 4 is fixedly connected to the connecting flange of the external tower foot by bolts.

[0027] refer to Figure 1 The surface of the spiral anchor steel pile 1 is provided with at least five spiral blades 5, and the positions of the at least five spiral blades 5 are distributed at intervals along the length direction of the spiral anchor steel pile 1. The spiral blades 5 and the spiral anchor steel pile 1 are made as an integral structure. The spiral blades 5 are used to generate interlocking force with the soil to resist the upward pull force, bear the vertical load, and cooperate with the pile body to resist the horizontal load.

[0028] As a technical optimization of the present invention, by setting at least five spiral blades 5 on the spiral anchor steel pile 1 and making them an integrated structure, the interlocking force between the spiral anchor steel pile 1 and the soil is increased, which effectively resists the upward pull force, bears the vertical load, and cooperates with the pile body to resist the horizontal load, thereby improving the overall bearing capacity and stability of the spiral anchor.

[0029] refer to Figure 2 and Figure 3 Both the first conversion flange 2 and the second conversion flange 4 are provided with bolt holes 6 that match the bolts, and the number of bolt holes 6 is at least four, and the positions of the at least four bolt holes 6 are evenly distributed.

[0030] As a technical optimization of the present invention, at least four evenly distributed bolt holes 6 are provided on both the first conversion flange 2 and the second conversion flange 4, which ensures the stability and reliability of the bolt connection, makes the connection between the spiral anchor steel pile 1, the steel bearing platform 3 and the external tower foot more uniformly stressed, and enhances the stability of the entire structure.

[0031] refer to Figure 2 and Figure 3The steel bearing platform 3 is rectangular in shape and is made of high-strength steel. Both the upper and lower surfaces of the steel bearing platform 3 are provided with connecting parts that cooperate with the first conversion flange 2 and the second conversion flange 4. The surface of the connecting parts is provided with through holes 7 corresponding to the bolt holes 6.

[0032] As a technical optimization of the present invention, the steel support 3 adopts a rectangular high-strength steel structure, and the upper and lower surfaces are provided with connection parts and corresponding through holes 7 that cooperate with the conversion flange. This not only meets the load-bearing requirements, but also facilitates bolt connection with the first conversion flange 2 and the second conversion flange 4, ensuring the tightness and stability of the connection of each component.

[0033] refer to Figure 2 Two flat irons 8 are respectively installed at the bottom of the steel foundation 3. The two ends of one flat iron 8 are welded to the steel foundation 3 and the spiral anchor steel pile 1 respectively. One end of the other flat iron 8 is welded to the spiral anchor steel pile 1, and the other end of the flat iron 8 extends out of the ground to cooperate with the grounding wire of the external equipment.

[0034] As a technical optimization of the present invention, by setting two flat irons 8, one is used to connect the steel foundation 3 and the spiral anchor steel pile 1, and the other end is connected to another spiral anchor steel pile 1 and extends out of the ground to cooperate with the grounding wire of the external equipment. This not only enhances the stability of the overall structure of the spiral anchor, but also realizes the equipment grounding function and improves the safety of equipment use.

[0035] refer to Figure 2 The gap between the first conversion flange 2 and the steel bearing platform 3 is filled with micro-expanded fine stones 9.

[0036] As a technical optimization of the present invention, the setting of micro-expanded fine stones 9 can enhance the stability and load-bearing capacity of the connection parts, and further ensure the reliability of the overall structure of the spiral anchor when bearing loads.

[0037] The working principle and usage process of this invention: The construction process of the spiral anchor is as follows: First, a comprehensive geological survey is conducted on the construction site to understand the soil type (such as clay, sand, gravelly soil, etc.), soil bearing capacity, groundwater level, and other parameters. Based on the survey results, combined with the tower and mast height, load requirements, etc., select appropriate specifications of spiral anchor steel pile 1 (including length, diameter, size and quantity of spiral blades 5, etc.), first conversion flange 2, steel foundation 3, second conversion flange 4, flat iron 8, and micro-expanded fine stone 9, etc., and prepare special construction machinery and equipment (such as torque drilling rigs, etc.) as well as bolts, wrenches, and other connecting parts and tools. Then, the spiral anchor steel pile 1 is driven into the ground by screwing in using special machinery and equipment. By controlling the torque of the equipment, it is ensured that the spiral blades 5 on the spiral anchor steel pile 1 are screwed into the soil to the preset depth. During the implantation process, the verticality of the spiral anchor steel pile 1 is monitored in real time. If any deviation occurs, it is adjusted in time. At this time, attention should be paid to... During the installation of the spiral anchor steel pile 1, the torque changes of the mechanical equipment and the verticality of the spiral anchor steel pile 1 need to be monitored in real time. If the torque suddenly increases or the verticality deviates, the installation should be stopped, the fault should be checked and eliminated before continuing the construction. After the spiral anchor steel pile 1 is installed in place, the two flat irons 8 are welded and fixed respectively. The two ends of one flat iron 8 are welded to the bottom of the steel foundation 3 and the spiral anchor steel pile 1 respectively. One end of the other flat iron 8 is welded to the spiral anchor steel pile 1, and the other end extends above the ground level for connection with the grounding wire of the external equipment. The first conversion flange 2 is fixedly connected to the connection part of the bottom of the steel foundation 3 with bolts to ensure a tight connection. Then, micro-expansion fine stones 9 are filled in the gap between the first conversion flange 2 and the steel foundation 3 to enhance the stability and load-bearing capacity of the connection part. After that, the second conversion flange 4 is fixedly connected to the connecting flange of the external tower foot with bolts to complete the assembly of the entire adjustable spiral anchor and the external tower foot.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable helical anchor, comprising a helical anchor steel pile (1) and a steel cap (3), characterized in that: The top of the spiral anchor steel pile (1) is fixedly connected to a first conversion flange (2), and the top of the first conversion flange (2) is connected to the bottom of the steel base (3) by bolts. The top of the steel base (3) is fixedly connected to a second conversion flange (4), and the second conversion flange (4) is fixedly connected to the connecting flange of the external tower foot by bolts.

2. An adjustable helical anchor according to claim 1, characterized in that: The surface of the spiral anchor steel pile (1) is provided with at least five spiral blades (5), and the positions of the at least five spiral blades (5) are distributed at intervals along the length direction of the spiral anchor steel pile (1). The spiral blades (5) and the spiral anchor steel pile (1) are made as an integral structure. The spiral blades (5) are used to generate interlocking force with the soil to resist the upward pull force, bear the vertical load, and cooperate with the pile body to resist the horizontal load.

3. An adjustable helical anchor according to claim 2, characterized in that: Both the first conversion flange (2) and the second conversion flange (4) are provided with bolt holes (6) that match the bolts, and the number of bolt holes (6) is at least four, and the positions of the at least four bolt holes (6) are evenly distributed.

4. An adjustable helical anchor according to claim 3, characterized in that: The steel support (3) is rectangular in shape and is made of high-strength steel. The upper and lower surfaces of the steel support (3) are provided with connecting parts that cooperate with the first conversion flange (2) and the second conversion flange (4). The surface of the connecting parts is provided with through holes (7) corresponding to the bolt holes (6).

5. An adjustable helical anchor according to claim 4, characterized in that: Two flat irons (8) are respectively provided at the bottom of the steel foundation (3). The two ends of one flat iron (8) are welded to the steel foundation (3) and the spiral anchor steel pile (1) respectively. One end of the other flat iron (8) is welded to the spiral anchor steel pile (1), and the other end of the flat iron (8) extends out of the ground and is used in conjunction with the grounding wire of the external equipment.

6. An adjustable helical anchor according to claim 5, characterized in that: The gap between the first conversion flange (2) and the steel base (3) is filled with micro-expanded fine stones (9).

7. The adjustment method for an adjustable helical anchor according to claim 6, comprising the following steps: S1: Conduct a geological survey of the construction site to determine the soil type, bearing capacity and other parameters. Based on the survey results and the load requirements of the external tower feet, select appropriate specifications of spiral anchor steel piles (1), first conversion flange (2), steel foundation (3), second conversion flange (4), flat iron (8) and micro-expansion fine stone (9) and other components. Prepare special construction machinery and equipment, bolts and other connecting parts, and then execute S2. S2: Use specialized mechanical equipment to drive the spiral anchor steel pile (1) into the ground by screwing it in. By controlling the torque of the equipment, ensure that the spiral blade (5) on the spiral anchor steel pile (1) is screwed into the soil at the preset depth. During the implantation process, monitor the verticality of the spiral anchor steel pile (1) in real time. If any deviation occurs, adjust it in time and then execute S3. S3: After the spiral anchor steel pile (1) is implanted, the two flat irons (8) are welded and fixed respectively. The two ends of one flat iron (8) are welded to the bottom of the steel foundation (3) and the spiral anchor steel pile (1), and one end of the other flat iron (8) is welded to the spiral anchor steel pile (1), and the other end extends to the ground level for connection with the grounding wire of the external equipment. Then, S4 is executed. S4: Secure the connection between the first conversion flange (2) and the bottom of the steel base (3) with bolts to ensure a tight connection. Then fill the gap between the first conversion flange (2) and the steel base (3) with micro-expansion fine stones (9) to enhance the stability and load-bearing capacity of the connection. After that, secure the second conversion flange (4) to the connecting flange of the external tower foot with bolts to complete the assembly of the entire adjustable spiral anchor and the external tower foot.

8. The adjustment method for an adjustable spiral anchor according to claim 7, characterized in that: During the implantation of the spiral anchor steel pile (1), it is necessary to monitor the torque change of the mechanical equipment and the verticality of the spiral anchor steel pile (1) in real time. If the torque suddenly increases or the verticality deviates, the implantation should be stopped, and the fault should be checked and eliminated before continuing the construction.

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