Power transmission tower binding steel hoop externally-wrapped bearing platform type foundation reinforcing structure

Abstract

The utility model relates to the technical field of power transmission iron tower foundation reinforcement, in particular to a power transmission iron tower binding steel hoop externally-wrapped bearing platform type foundation reinforcement structure which mainly comprises an externally-wrapped bearing platform which surrounds an original main column. And two binding steel hoops are tightly sleeved outside the outer packing bearing platform and are tightened by bolts. According to the utility model, the local strength of the reinforced structure is improved through the lap welding connection of the steel reinforcement framework structure of the externally-wrapped bearing platform, the bearing platform longitudinal ribs and the original main column anti-shearing piece and the lap welding connection of the original main column anti-shearing piece and the bearing platform steel hoop. The binding steel hoop is sleeved outside the bearing platform, so that the problem of uneven settlement or inclination of the original foundation of the iron tower can be solved. Therefore, on the premise that the original foundation and the original iron tower are utilized, the local strength of the original foundation of the power transmission iron tower is improved, the problem of differential settlement of the iron tower foundation is solved, and line operation safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission iron tower foundation reinforcement, in particular to a power transmission iron tower foundation reinforcement structure with a steel hoop wrapped around a support platform. Background Art

[0002] Transmission line towers are important structures for long-distance power channels. They are space truss structures, and the main materials of the towers are often large angle steels, combined angle steels or steel pipe components. The tower foundation can be installed only after the foundation strength reaches the design requirements. The foundation plays a fixing role on the tower.

[0003] In the field of transmission tower foundation reinforcement technology, some line tower foundations are aging (due to long-term exposure to the sun, wind, etc.), and micro cracks or non-stress cracks appear on the foundation surface. Foundation aging will reduce the foundation bearing capacity to a certain extent, thereby reducing the risk resistance of the transmission tower.

[0004] At present, there are many methods to deal with micro cracks or non-stress cracks in the foundation of transmission towers, mainly increasing the foundation cross-section and replacing concrete. However, there are fewer methods to deal with both non-stress cracks and uneven settlement in the tower foundation, and most of them involve large engineering workloads or are difficult to construct.

[0005] The utility model mainly develops a reinforcement method for micro cracks or non-stress cracks and uneven settlement in the foundation of a transmission tower, which has a small amount of work, convenient construction and good economy. Utility Model Content

[0006] The utility model aims to provide a transmission iron tower tightening steel hoop outer support platform type foundation reinforcement structure, which can improve the local strength of the original foundation and solve the problem of uneven settlement without dismantling the original foundation and the transmission iron tower.

[0007] To achieve the above-mentioned purpose, the utility model involves a transmission tower with a tightened steel hoop and an external pedestal foundation reinforcement structure, which comprises an original main column, an external pedestal and a shear-resistant member. The external pedestal is surrounded by the original main column, and the external pedestal and the original main column are connected by the shear-resistant member to form a local foundation reinforcement structure.

[0008] Preferably, the external cap is a reinforced concrete structure, and the interior of the external cap includes cap main reinforcement, cap steel hoops and cap frame reinforcement. The cap main reinforcement and cap frame reinforcement are arranged in parallel along the height direction of the original main column, and the cap steel hoops connect the cap main reinforcement.

[0009] Preferably, the external foundation is a reinforced concrete structure of uniform cross-section.

[0010] Preferably, the outer support platform and the original main column are concentric, and the two form a whole of four in total, which are arranged in a centrally symmetrical manner around the center of the transmission tower.

[0011] Preferably, two tightening steel hoops are sleeved outside the four outer caps, and the tightening steel hoops are tightened by bolts. The outer caps and the original main column are tightened by the two tightening steel hoops to form an integral foundation reinforcement structure.

[0012] Beneficial effects of the utility model:

[0013] The utility model provides a transmission tower with a steel hoop-wrapped pedestal foundation reinforcement structure, which can locally reinforce the original foundation without dismantling the original foundation and the upper transmission tower structure. The reinforcement structure can improve the uneven settlement of the tower foundation, and has a simple structure, convenient construction and low cost. The local strength of the reinforcement structure is improved by overlapping and welding the steel skeleton structure of the pedestal and the longitudinal reinforcement of the pedestal with the original main column shear members, and the original main column shear members with the pedestal steel hoops.

[0014] Therefore, the utility model can solve the problem of improving the local strength of the original foundation of the transmission tower and improving the uneven settlement of the tower foundation under the premise of utilizing the original foundation and the original tower, thereby ensuring the safe operation of the line. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the planar structure of the utility model.

[0016] Figure 2 for Figure 1 Schematic diagram of the cross section at 1-1.

[0017] Figure 3 This is a schematic diagram of the reinforcement of the top surface of the external cap.

[0018] Figure 4 for Figure 3 Schematic diagram of the cross section at 2-2.

[0019] Description of reference numerals:

[0020] Original main column 1, external cap 2, cap main reinforcement 3, cap steel hoops 4, shear members 5, cap frame reinforcement 6, tower center 7, tightening steel hoops 8, bolts 9. DETAILED DESCRIPTION

[0021] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of them.

[0022] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The utility model discloses a transmission iron tower tightened steel hoop externally wrapped pedestal type foundation reinforcement structure. The reinforcement structure utilizes the original transmission line iron tower foundation and can improve the local bearing capacity of the original foundation and solve the problem of uneven settlement of the original foundation without dismantling the original foundation and iron tower in case the concrete on the original foundation surface is loose and in powder form and easy to fall off.

[0025] like Figure 1 , Figure 2 , Figure 3 As shown, the utility model relates to a transmission tower tightening steel hoop external capping platform type foundation reinforcement structure, which mainly includes an original main column 1, an external capping platform 2, and a shear member 5. The external capping platform 2 surrounds the original main column 1, and the external capping platform 2 and the original main column 1 are connected by the shear member 5 to form a local foundation reinforcement structure. The external capping platform 2 and the original main column 1 are concentric and arranged symmetrically around the center 7 of the transmission tower, as shown in FIG. Figure 1 As shown by the middle arrow, the outer cap 2 is tightened by tying the steel hoop 8 to form an integral foundation reinforcement structure.

[0026] like Figure 1 As shown, there are four foundation reinforcement structures, which are located at the four corners of the center 7 of the transmission tower and are arranged symmetrically around the center 7 of the transmission tower. The tightening steel hoops 8 are right-angled, and there are two of them. The two tightening steel hoops 8 enclose the four foundation reinforcement structures into a square, and the right angles of the square are tightened by bolts 9.

[0027] The outer cap 2 is a reinforced concrete structure with a uniform cross section, including cap main reinforcement 3, cap steel hoop 4 and cap frame reinforcement 6. The cap frame reinforcement 6 is arranged along the height direction of the original main column 1. The cap main reinforcement 3 is arranged along the height direction of the original main column 1. The cap frame reinforcement 6 plays a structural role. The cap steel hoop 4 is used to connect the cap main reinforcement 3. The outer cap is surrounded by the original main column and arranged in a concentric circle with the original foundation to increase the cross-sectional area of ​​the foundation main column; the outer cap is placed in the outermost layer of the original main column to increase the foundation cross-sectional area and enhance the local stiffness of the original foundation main column. The cap main reinforcement 3 is mainly used to transfer axial loads, the cap main reinforcement 3 is overlapped and welded with the original main column shear member 5; the cap steel hoop 4 is overlapped and welded with the original main column shear member 5; the cap frame reinforcement 6 is used to meet the structural requirements.

[0028] The reinforcement skeleton of the external cap and the longitudinal reinforcement of the cap are overlapped and welded with the original main column shear members, and the original main column shear members are overlapped and welded with the cap steel hoops, thereby improving the local structural strength of the reinforced structure; the external cap is formed into an integral foundation structure by tightening the steel hoops, thereby improving the technical problem of uneven settlement of the original tower foundation.

[0029] The construction process of the reinforcement structure is as follows:

[0030] (1) Remove the aging and easily falling concrete on the surface of the original foundation concrete, clean it with a high-pressure water gun, and apply an interface agent;

[0031] (2) Drill holes on the surface of the original main column and implant shear-resistant parts;

[0032] (3) Injecting structural adhesive into the pores of the original main column where the shear member is implanted;

[0033] (4) Outsourcing of construction foundation;

[0034] (5) After the concrete is poured, it should be cured for 14 days;

[0035] (6) Tighten the steel hoops outside the external foundation and apply pre-tightening force.

[0036] The above-mentioned embodiment only expresses one implementation method of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A transmission tower steel hoop-wrapped foundation reinforcement structure, characterized in that: It comprises an original main column (1), an external cap (2), and a shear member (5). The outer cap (2) includes cap main reinforcement (3) and cap steel hoops (4) inside, the cap main reinforcement (3) is arranged along the height direction of the original main column (1), the cap main reinforcement (3) is overlapped with the shear member (5), and the cap steel hoops (4) connect the cap main reinforcement (3) to form a steel skeleton structure; The outer capping platform (2) surrounds the outside of the original main column (1), and the outer capping platform (2) and the original main column (1) are connected to form a foundation reinforcement structure via a shear-resistant member (5).

2. The transmission tower steel hoop-wrapped foundation reinforcement structure according to claim 1 is characterized in that: The outer capping platform (2) also includes capping platform support reinforcement (6) inside, and the capping platform support reinforcement (6) is arranged in parallel with the capping platform main reinforcement (3) along the height direction of the original main column (1).

3. The transmission tower steel hoop outer-wrapped foundation reinforcement structure according to claim 2 is characterized by: The outer capping platform (2) is a reinforced concrete structure with a uniform cross-section.

4. A transmission tower steel hoop-wrapped foundation reinforcement structure according to any one of claims 1 to 3, characterized in that: The outer support platform (2) and the original main column (1) are concentric, and the two form a total of four units, which are arranged in a centrally symmetrical manner around the center (7) of the transmission tower.

5. The transmission tower steel hoop-wrapped foundation reinforcement structure according to claim 4 is characterized in that: Two tightening steel hoops (8) are sleeved on the outside of the four outer supporting platforms (2), and the tightening steel hoops (8) are tightened by bolts (9).

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