Overhead line iron tower foundation structure in rock geologic structure

Abstract

The utility model belongs to the field of electric power engineering overhead lines, and discloses an overhead line iron tower foundation structure in a rock geologic structure, which is characterized in that a reinforced concrete foundation is arranged in a cavity formed in an undisturbed rock, anchoring holes are formed in the reinforced concrete foundation, and anchoring parts are inserted in the anchoring holes. One end of the anchoring part is pre-tightened and inserted into the undisturbed rock, the other end is pre-tightened and fixed with the top surface of the reinforced concrete foundation, and the gap is filled with filler. The reinforced concrete foundation is tightly connected with the undisturbed rock through the anchoring parts, the anchoring effect is enhanced through pre-tightening force, a large amount of rock does not need to be excavated, and labor intensity and construction difficulty are reduced. And meanwhile, the stability and durability of the foundation are improved by using the anchoring parts and the filling agent. By adopting the structure, the construction process is simplified, the construction period is shortened, the cost is effectively reduced, the construction efficiency is improved, and the stability and the safety of the iron tower in a hard rock geological structure are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of overhead lines in power engineering, and particularly relates to an overhead line tower foundation structure in a rock geological structure. Background Art

[0002] As an important infrastructure for promoting social progress and development, the construction quality and efficiency of power engineering directly affect the stability and reliability of power supply. In power engineering, the construction of the overhead line tower foundation is a crucial link. Especially in mountainous areas with complex terrain and hard rocks, the construction of tower foundations faces many challenges. Traditionally, in order to ensure the stability and safety of the tower, a foundation in the form of friction piles is mostly adopted, and the excavation is carried out by means of manual dug cast-in-place piles.

[0003] However, the traditional construction method is less efficient in hard rock formations. It not only requires a large amount of manpower and material resources, but also has a long construction period and high costs. Especially for the construction of the overhead line tower foundation in a rock geological structure, there are many problems. First, the hardness of the rock formation makes it extremely difficult to excavate holes, not only with high labor intensity but also low excavation efficiency. Second, due to the limited working space, construction workers operate in a narrow space, which not only increases the construction difficulty but also poses a threat to the safety of construction workers. In addition, the excavation of hard rocks requires a large amount of time and resources, resulting in a long construction period and high costs remaining high.

[0004] [[ID=)14]]Thus, although the existing tower foundation structure can ensure the stability and safety of the tower, due to the great difficulty in excavating the rock geological structure and the limited working space, the construction period is long and the efficiency is low. Content of the Utility Model

[0005] The utility model provides an overhead line tower foundation structure in a rock geological structure. By adopting this tower foundation structure, from the aspect of the tower foundation form, a pre-tightening force anchoring structure is added, the excavation work amount is reduced, the foundation anchoring force is increased, the foundation work amount of the overhead line tower can be reduced, the construction efficiency of the tower foundation can be improved, the cost can be reduced, and the labor amount can be reduced, thereby reducing the construction cost of the project.

[0006] In order to achieve the above purpose, the utility model adopts the following technical content:

[0007] An overhead line tower foundation structure in a rock geological structure, comprising: [[ID=2))6]]

[0008] A reinforced concrete foundation;

[0009] The reinforced concrete foundation is arranged in a cavity opened in the original rock;

[0010] The reinforced concrete foundation has several anchor holes along the vertical direction;

[0011] An anchor is inserted into the anchoring hole;

[0012] One end of the anchor is inserted into the undisturbed rock by pre-tightening force, and the other end is pre-tightened and fixed to the top surface of the reinforced concrete foundation by fasteners;

[0013] The gap between the anchor hole and the anchor is filled with a filler.

[0014] Furthermore, the anchoring device is an anchor cable, an anchor rod, or a grouting conduit.

[0015] Furthermore, the fastener includes an anchor plate and a fastening nut;

[0016] The other end of the anchor passes through the anchor plate and is threadedly fixed to the fastening nut.

[0017] Furthermore, the anchor plate is made of steel plate or structural steel.

[0018] Furthermore, several connectors are pre-embedded in the reinforced concrete foundation, and the connectors are used to fix the overhead line towers.

[0019] Furthermore, the connector is a bolt; one end of the bolt is inserted and fixed inside the reinforced concrete foundation, and the other end protrudes from the top surface of the reinforced concrete foundation.

[0020] Furthermore, several of the bolts are evenly distributed along the circumference of the reinforced concrete foundation.

[0021] Furthermore, the multiple anchors are evenly distributed along the circumference of the reinforced concrete foundation.

[0022] Furthermore, the number of anchors is no less than three.

[0023] Furthermore, the filler is a resin anchoring adhesive, a high-strength grout with a compressive strength greater than C80, or a concrete filling structure.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] This invention provides a foundation structure for overhead power line towers in rocky geological structures. A reinforced concrete foundation is installed within a cavity carved into the undisturbed rock, and anchoring holes are drilled in the reinforced concrete foundation for inserting anchors. One end of the anchor is pre-tightened and inserted into the undisturbed rock, while the other end is pre-tightened and fixed to the top surface of the reinforced concrete foundation, with the gap filled with a filler. The anchors tightly connect the reinforced concrete foundation to the undisturbed rock, and the pre-tightening force enhances the anchoring effect, eliminating the need for extensive rock excavation and reducing labor intensity and construction difficulty. Simultaneously, the use of anchors and filler improves the stability and durability of the foundation. This structure not only simplifies the construction process and shortens the construction cycle but also effectively reduces costs and improves construction efficiency. Furthermore, it ensures the stability and safety of the tower in hard rock geological structures, solving the problems of low efficiency, high cost, and limited working space associated with traditional construction methods in rocky strata.

[0026] Preferably, in this invention, the anchors are anchor cables, anchor rods, or grouting pipes, providing a variety of options to adapt to different rock geological conditions and construction requirements. These anchors have good tensile and compressive strength, which can further enhance the anchoring effect of the foundation and improve the stability of the overall structure.

[0027] Preferably, in this invention, the fastener includes an anchor plate and a fastening nut, and the anchor is tightly connected to the top surface of the reinforced concrete foundation by means of threaded fixing. This connection method is simple and easy to implement, facilitating construction and operation, while ensuring the firmness and reliability of the connection.

[0028] Preferably, in this invention, the anchor plate is made of steel plate or structural steel, possessing sufficient strength and rigidity to withstand significant tensile and compressive forces. This helps enhance the anchoring effect of the foundation, improve the stability of the overall structure, and extend the service life of the foundation.

[0029] Preferably, in this invention, several connectors are pre-embedded in the reinforced concrete foundation for fixing the overhead line tower. This design makes the connection between the tower and the foundation more robust and reliable, improves the tower's wind and earthquake resistance, and ensures the safe operation of the power line.

[0030] Preferably, in this invention, the connecting component is a bolt, which is convenient to install and easy to disassemble. One end of the bolt is inserted and fixed into the reinforced concrete foundation, while the other end protrudes from the top surface of the foundation, facilitating connection with the tower. This connection method simplifies the construction process and improves construction efficiency.

[0031] Preferably, in this invention, several bolts are evenly distributed along the circumference of the reinforced concrete foundation, making the connection between the tower and the foundation more uniform and stable. This arrangement helps to distribute the forces on the tower, improving the overall structural load-bearing capacity and wind and earthquake resistance.

[0032] Preferably, in this invention, multiple anchors are evenly distributed along the circumference of the reinforced concrete foundation, enhancing the connection between the foundation and the undisturbed rock. This arrangement helps improve the stability and load-bearing capacity of the foundation while reducing localized stress concentration.

[0033] Preferably, in this invention, the number of anchors is no less than three, ensuring sufficient redundancy and reliability in the connection between the foundation and the undisturbed rock. Even if one anchor fails, the others can still withstand sufficient tensile force, ensuring the stability of the overall structure.

[0034] Preferably, in this invention, the filler is a resin anchoring adhesive, a high-strength grout with a compressive strength greater than C80, or a concrete filling structure, which has excellent bonding performance and compressive strength. These fillers can fill the gap between the anchoring hole and the anchor, enhance the anchoring effect, and improve the stability and durability of the overall structure. Attached Figure Description

[0035] Figure 1 A schematic diagram of the foundation structure of an overhead power line tower in a rock geological structure provided for an embodiment of this utility model;

[0036] Figure 2 This is a schematic diagram of the anchorage of an overhead power line tower foundation structure in a rock geological structure, provided as an embodiment of the present invention.

[0037] Figure label:

[0038] 1. Bolt; 2. Anchor plate; 3. Anchor; 4. Filler; 5. Anchor hole; 6. Fastening nut; 7. Reinforced concrete foundation; 8. Original rock. Detailed Implementation

[0039] To make the technical problem solved by this utility model, the technical solution, and the beneficial effects clearer, the following specific embodiments provide a further detailed description of this utility model. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present 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 present invention without inventive effort are within the scope of protection of the present invention.

[0042] It should be noted that similar labels 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.

[0043] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" are used to 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 utility model product is usually placed during use, they are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0044] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Example 1:

[0047] As described in the background section, traditional construction methods are inefficient in hard rock formations, requiring significant manpower and resources, resulting in long construction periods and high costs. The construction of overhead power line tower foundations, especially in rocky geological structures, faces numerous challenges. First, the hardness of the rock makes excavation extremely difficult, resulting in high labor intensity and low excavation efficiency. Second, the limited working space forces workers to operate in confined areas, increasing the difficulty of construction and posing a safety threat. Furthermore, excavating hard rock requires substantial time and resources, leading to long construction periods and high costs.

[0048] To address the above issues, this embodiment provides an overhead power line tower foundation structure in a rock geological structure. This foundation structure employs an anchor structure and applies pre-tightening force to increase the foundation's friction and overturning resistance, thereby meeting the mechanical performance requirements of the tower foundation. This overcomes the shortcomings of the current common practice of using bored pile foundations, which involves large-scale and inefficient engineering and long construction periods.

[0049] like Figure 1 and Figure 2 As shown, this embodiment provides a foundation structure for an overhead power line tower in a rock geological structure, including: a reinforced concrete foundation 7 embedded in the cavity of undisturbed rock 8, with multiple bolts 1 pre-embedded in the top for fixing the tower. Multiple anchoring holes 5 are opened vertically in the reinforced concrete foundation 7, and anchor cables are inserted into the holes as anchoring elements 3. One end of the anchor cable is anchored into the undisturbed rock 8 by pre-tightening force, and the other end passes through the anchor plate 2 and is locked in place by a fastening nut 6. The gap between the anchoring holes 5 and the anchor cables is filled with resin anchoring adhesive 4 to ensure uniform transmission of anchoring force. The anchor plate 2 is made of steel, and the bolts 1 are evenly distributed around the circumference of the reinforced concrete foundation 7. The number of anchor cables is 4 and symmetrically distributed to meet the pull-out stability requirements.

[0050] Therefore, it is evident that existing tower foundations in rock geological structures are generally excavated manually, resulting in significant excavation depths. The excavation of hard rock requires substantial labor and machinery, and the construction period is lengthy. Since rock is a natural concrete, manually excavating it and then pouring concrete disrupts the original geological structure's stability and involves redundant concrete pouring.

[0051] The tower foundation structure provided in this embodiment allows for less excavation of natural rock, reducing inefficient, time-consuming, and high-intensity labor, and shortening the construction period for rock excavation. The pre-tensioning force applied by the anchoring structure increases the uplift force of the tower foundation, satisfying the uplift force loss due to reduced friction caused by the reduced excavation depth. Simultaneously, it reduces the excavation depth and the cost of concrete pouring, lowering the overall construction cost of the tower foundation. It also reduces the construction time consumed by excavating existing rock and reduces the labor intensity of working in confined spaces.

[0052] Example 2:

[0053] After excavating a cavity in the undisturbed rock 8, a reinforced concrete foundation 7 is poured. Three grouting pipes are pre-embedded inside as anchors 3, and steel anchor plates 2 are welded to the outer ends of the pipes and pre-tightened with nuts 6. The anchoring holes 5 and the filler 4 of high-strength grout with a compressive strength greater than C80 form a dense filling structure. Six bolts 1 are evenly distributed circumferentially on the top surface of the reinforced concrete foundation 7. The bolts 1 are pre-embedded and used to fix the tower support. During construction, the grouting pipes are inserted into the rock and high-pressure grouting is performed to enhance the anchoring effect. At the same time, the overall anti-overturning performance of the foundation is optimized by adjusting the pre-tightening force of the anchor plates 2 and nuts 6.

[0054] Example 3:

[0055] For weathered rock strata, anchor bolts are used as anchoring components 3. After the anchor bolts are inserted into the undisturbed rock 8, they are locked in place by anchor plates 2 and double nuts 6. Concrete filler 4 is injected into the anchoring holes 5 to enhance adhesion. Eight bolts 1 are pre-embedded at the top of the reinforced concrete foundation 7, evenly distributed at 45° intervals along the circumference to ensure the stability of the tower installation. During construction, the anchor bolts are driven into the rock strata at an inclined angle to increase the pull-out bearing capacity. At the same time, after the filler 4 hardens, it forms a composite load-bearing structure with the anchor bolts and the foundation, effectively distributing the load and reducing the risk of foundation settlement.

[0056] In summary, this utility model provides a foundation structure for overhead power line towers in rock geological structures, which has the following advantages compared with existing tower foundation structures:

[0057] First, the amount of excavation work is reduced: the rock strata themselves have sufficient bearing capacity as natural concrete, so only a small amount of rock needs to be excavated, reducing the amount of rock excavation, reducing labor intensity, improving excavation efficiency, and reducing costs.

[0058] Secondly, the amount of concrete poured and excavated is reduced, which improves construction efficiency, reduces transportation workload, and lowers construction costs.

[0059] Third, it increases the anti-overturning capacity: the setting of anchors and the application of pre-tightening force can increase the anti-overturning capacity of the foundation.

[0060] Fourth, easy installation: the anchors and anchor plates are pre-embedded and installed, and the pre-tightening force is applied after the foundation is formed, which facilitates operation.

[0061] Fifth, improved overall construction efficiency: Improved construction efficiency of individual foundations leads to improved construction efficiency of the entire overhead line foundation, adding value to the project.

[0062] The above embodiments are merely one of the implementation methods to achieve the technical solution of this utility model. The scope of protection claimed by this utility model is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model.

Claims

1. An overhead line tower foundation structure in a rock geologic structure, characterized by, include: Reinforced concrete foundation (7); The reinforced concrete foundation (7) is set in a cavity opened in the original rock (8); The reinforced concrete foundation (7) has several anchor holes (5) in the vertical direction; An anchor (3) is inserted into the anchor hole (5); One end of the anchor (3) is inserted into the undisturbed rock (8) by pre-tightening force, and the other end is pre-tightened to the top surface of the reinforced concrete foundation (7) by fasteners; The gap between the anchor hole (5) and the anchor (3) is filled with filler (4).

2. The overhead line tower foundation structure in a rock geologic structure according to claim 1, characterized in that, The anchor (3) is an anchor cable, anchor rod or grouting pipe.

3. The overhead line tower foundation structure in a rock geologic structure according to claim 1, wherein, The fasteners include an anchor plate (2) and a fastening nut (6); The other end of the anchor (3) passes through the anchor plate (2) and is threadedly fixed to the fastening nut (6).

4. The overhead line tower foundation structure in a rock geologic structure according to claim 3, wherein, The anchor plate (2) is made of steel plate or steel section.

5. The overhead line tower foundation structure in a rock geologic structure of claim 1, wherein, Several connectors are pre-embedded in the reinforced concrete foundation (7), and the connectors are used to fix the overhead line towers.

6. The overhead line tower foundation structure in a rock geologic structure according to claim 5, wherein, The connector is a bolt (1); one end of the bolt (1) is inserted and fixed in the reinforced concrete foundation (7), and the other end protrudes from the top surface of the reinforced concrete foundation (7).

7. The overhead line tower foundation structure in a rock geologic structure according to claim 6, wherein, Several bolts (1) are evenly distributed along the circumference of the reinforced concrete foundation (7).

8. The overhead line tower foundation structure in a rock geologic structure of claim 1, wherein, The multiple anchors (3) are evenly distributed along the circumference of the reinforced concrete foundation (7).

9. The overhead line tower foundation structure in a rock geologic structure of claim 1, wherein, The number of anchors (3) shall not be less than 3.

10. The overhead line tower foundation structure in a rock geologic structure of claim 1, wherein, The filler (4) is made of resin anchoring adhesive, high-strength grout with compressive strength greater than C80, or concrete filling structure.

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