A leg reinforcement device and method for a door-type guyed tower

Abstract

The invention discloses a single steel pipe reinforcement device and method for the rusted leg of a gate-type guyed tower, comprising: a pressure-bearing steel pipe rod (101), a semicircular solid ball hinge support (102), a pressure-bearing steel pipe rod node plate (103, 105), a main material node plate of a guyed tower (104, 106), a top plate mounting base (107), and a steel pipe waterproof top plate (108). The semicircular solid ball hinge support is welded to the bottom surface of the pressure-bearing steel pipe rod. When reinforcement is performed, the original foundation concrete protective cap is first excavated, and then the pressure-bearing steel pipe rod is inserted into the inside of the guyed tower, and the main material connection node plate is welded at a suitable position. The top and waist of the pressure-bearing steel pipe rod are respectively connected to the main material node plate by bolts through the steel pipe rod node plate, and finally the concrete foundation protective cap is poured. The scheme is safe and practical, can effectively reinforce the leg of the gate-type guyed tower, has little impact on the original structure, saves materials, is easy to operate, and can significantly improve the bearing capacity of the original guyed tower.

Description

Technical Field

[0001] The present invention belongs to the technical field of power transmission equipment, and more specifically, relates to a guy tower leg reinforcement device and reinforcement method. Background Art

[0002] With the growing national economy, the power industry has developed rapidly, which has strongly promoted the scale and level of transmission tower construction. The guy tower is a supporting structure used to support conductors and lightning conductors in overhead transmission lines. It consists of a tower head, a column and a guy wire. The tower head and the column are generally a space truss composed of angle steel, which has good overall stability. However, due to the long-term exposure of steel to harsh environments, corrosion will occur, causing a large loss of component strength, which will seriously affect the reliability of the structure. Therefore, current projects widely use the method of pouring concrete protective caps on the column legs and the top of the foundation to delay corrosion. However, this anti-corrosion method still has the following disadvantages:

[0003] 1. The concrete material itself will undergo a carbonization reaction with carbon dioxide in the air, which will reduce the alkalinity of the concrete and increase the number of hydrogen ions in the concrete pore solution, thereby reducing the protective effect of the concrete on the steel.

[0004] 2. Considering the economy, safety and aesthetics, the concrete protective cap can only protect a small area of ​​steel on the column legs. For high-level corrosion, the concrete protective cap cannot play a role. Summary of the invention

[0005] In order to solve the problems existing in the above-mentioned prior art, the object of the present invention is to provide a method for reinforcing a rusted single steel pipe at the leg of a gate-type guyed tower.

[0006] The present invention adopts the following technical solution. A leg reinforcement device for a portal-type guyed tower comprises: a pressure rod, multiple groups of rod node plates, multiple groups of main material node plates and a support, wherein the multiple groups of rod node plates are fixedly mounted on the pressure rod from top to bottom, the horizontal height of each group of rod node plates is higher than the corroded section of the leg of the guyed tower, each group of rod node plates comprises multiple rod node plates, each rod node plate in the same group is fixedly mounted on the pressure rod at the same horizontal height, corresponding to the node of the guyed tower; multiple groups of main material node plates are fixedly mounted on the multiple groups of rod node plates from top to bottom in a manner that one group of main material node plates corresponds to one group of rod node plates, each group of main material node plates comprises multiple main material node plates, each main material node plate is correspondingly fixedly mounted on a rod node plate, and each main material node plate is fixedly mounted on the main material of the guyed tower at the same time; the support is fixedly mounted on the bottom surface of the pressure rod and cast in the concrete protective cap of the guyed tower; the pressure rod is installed vertically, the top end of the pressure rod refers to the end away from the ground during installation, the bottom surface of the pressure rod refers to the end close to the ground during installation, and from top to bottom refers to the direction toward the ground.

[0007] Preferably, the pressure-bearing rod is a pressure-bearing steel tube rod, the rod node plate is welded and installed on the pressure-bearing steel tube rod, the rod node plate and the main material node plate are provided with corresponding through holes for connecting the rod node plate and the main material node plate by bolts, and the main material node plate is welded to the main material of the cable tower.

[0008] Preferably, each group of rod node plates includes four rod node plates, which are evenly installed at intervals of 90° along the circumference of the pressure-bearing steel pipe rod.

[0009] Preferably, the multiple groups of rod node plates include a group of top node plates of pressure-bearing steel tube rods and a group of waist node plates of pressure-bearing steel tube rods, and the multiple groups of main material node plates include a group of top main material node plates and a group of waist main material node plates.

[0010] Preferably, the distance between the top node plate of the pressure-bearing steel pipe rod and the top end of the pressure-bearing steel pipe rod is not less than a set safety distance value.

[0011] Preferably, the distance between the top node plate of the pressure-bearing steel tube rod and the waist node plate of the pressure-bearing steel tube rod at least satisfies the following condition: the cross-sectional strength of the pressure-bearing steel tube rod at the center horizontal line position of the waist node plate of the pressure-bearing steel tube rod is greater than the bending moment there.

[0012] Preferably, the support is a semicircular solid spherical hinge support, which is fixedly installed on the bottom surface of the pressure-bearing rod by welding and is integrally cast with the guyed tower foundation protective cap.

[0013] Preferably, a waterproof module is fixedly installed on the top of the pressure-bearing rod, and the waterproof module includes a top plate mounting support and a waterproof top plate. The top plate mounting support is fixedly installed on the top of the pressure-bearing rod, and the waterproof top plate is fixedly installed on the mounting support.

[0014] Preferably, the top plate mounting support is made of stainless steel and is in a circular shape, the waterproof top plate is made of stainless steel and is in a circular shape, the top plate mounting support is welded to the top end of the pressure-bearing rod, and the top plate mounting support and the waterproof top plate are provided with multiple aligned through holes for connecting the top plate mounting support and the waterproof top plate by bolts.

[0015] The present invention provides a reinforcement method based on the above-mentioned door-type guyed tower leg reinforcement device, comprising the following steps:

[0016] Step 1, a plurality of groups of rod node plates are fixedly installed on the pressure rod, the horizontal height of each group of rod node plates is higher than the corroded section of the leg of the guyed tower, each group of rod node plates includes a plurality of rod node plates, and each rod node plate in the same group is fixedly installed on the pressure rod at the same horizontal height, corresponding to the node of the guyed tower;

[0017] Step 2, multiple groups of main material node plates are fixedly installed on the main material of the cable tower, one group of main material node plates corresponds to one group of rod node plates, the two have the same height, each group of main material node plates includes multiple main material node plates, and each main material node plate is fixedly installed on the main material of the cable tower;

[0018] Step 3: Fix the support on the bottom surface of the pressure rod.

[0019] Step 4: At the reinforcement site, excavate the concrete protective cap of the guyed tower, insert the pressure rod, drill holes at the connection parts of the corresponding rod node plate and the main material node plate, and connect them with bolts;

[0020] Step 5: Use concrete to cast the pressure rod and foundation protection cap into a whole.

[0021] Preferably, step 1 further comprises: fixing a waterproof module on the top of the pressure-bearing rod, welding a top plate mounting support to the top of the pressure-bearing rod, and fixing the waterproof top plate on the mounting support by bolts.

[0022] Preferably, the pressure-bearing rod in step 1 is a pressure-bearing steel tube rod, and a group of top node plates of the pressure-bearing steel tube rod and a group of waist node plates of the pressure-bearing steel tube rod are installed on the pressure-bearing steel tube rod. The top node plates of the pressure-bearing steel tube rod are above the waist node plates of the pressure-bearing steel tube rod. Each group of top node plates of the pressure-bearing steel tube rod includes four rod node plates, which are evenly welded on the pressure-bearing steel tube rod at intervals of 90° along the circumference of the pressure-bearing steel tube rod.

[0023] Preferably, in step 1, the distance between the top node plate of the pressure-bearing steel pipe rod and the top end of the pressure-bearing steel pipe rod is not less than 100 mm.

[0024] Preferably, in step 2, four main material node plates in a group of top main material node plates are welded to the main material of the cable tower, and four waist main material node plates in a group of waist main material node plates are welded to the main material of the cable tower.

[0025] Preferably, in step 3, the semicircular solid ball hinge support is welded to the bottom surface of the pressure-bearing steel pipe rod.

[0026] The beneficial effects of the present invention are that, compared with the prior art, after the implementation of the reinforcement scheme, the integrity is stronger than the original structure, and the structural strength reduced by corrosion can be effectively supplemented; by performing anti-corrosion treatment on the pressure-bearing steel pipe rods, the harm caused by leg corrosion can be effectively prevented in the medium and long term; it saves materials, has simple components, is easy to process, is easy to construct and is very economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an elevation view of the structure of the present invention;

[0028] Figure 2 This is a vertical view of the reinforced legs of the present invention;

[0029] Figure 3 A detailed view of the top plate of the structure of the present invention;

[0030] Figure 4 It is a cross-sectional view of the rear edge 1-1 of the leg reinforcement of the present invention;

[0031] Figure 5 It is a cross-sectional view of the rear edge 2-2 of the leg reinforcement of the present invention.

[0032] In the figure:

[0033] 101-pressure steel pipe rod;

[0034] 102-semicircular solid spherical hinge bearing;

[0035] 103-top node plate of pressure-bearing steel pipe rod;

[0036] 104- top main material node plate;

[0037] 105- waist node plate of pressure-bearing steel pipe rod;

[0038] 106- waist main material node plate;

[0039] 107-top plate mounting support;

[0040] 108-Steel pipe waterproof top plate;

[0041] 109-leg corrosion segment. DETAILED DESCRIPTION

[0042] The present application is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present application.

[0043] Embodiment 1: A leg reinforcement device for a gate-type guyed tower

[0044] like Figure 1 , 2 As shown in , 4, a preferred embodiment 1 of the present invention provides a portal-type cable tower leg reinforcement device, including: a pressure rod, a plurality of groups of rod node plates, a plurality of groups of main material node plates and a support, the plurality of groups of rod node plates are fixedly installed on the pressure rod from top to bottom, the horizontal height of each group of rod node plates is higher than the corrosion section 109 of the cable tower leg, each group of rod node plates includes a plurality of rod node plates, and each rod node plate in the same group is fixedly installed on the pressure rod at the same horizontal height, corresponding to the cable tower node.

[0045] Multiple groups of main material node plates are fixedly installed on the multiple groups of rod node plates from top to bottom in the manner that one group of main material node plates corresponds to one group of rod node plates. Each group of main material node plates includes multiple main material node plates. Each main material node plate is fixedly installed on the rod node plate accordingly. Each main material node plate is also fixedly installed on the main material of the cable tower.

[0046] like Figure 2 , 5 As shown, the support is fixedly installed on the bottom surface of the pressure rod and cast in the concrete protective cap of the guyed pole tower.

[0047] In order to clearly indicate the installation position of the components, the direction in the present invention is defined as follows: the pressure rod is installed vertically, the top of the pressure rod refers to the end away from the ground when installed, the bottom of the pressure rod refers to the end close to the ground when installed, and from top to bottom refers to the direction towards the ground.

[0048] Those skilled in the art can select appropriate materials to implement the present invention according to the actual situation of the guyed tower, such as but not limited to strength, ease of processing, cost, etc. As a preferred but non-restrictive manner, the pressure-bearing rod is a pressure-bearing steel pipe rod 101, the rod node plate is made of a material that matches the strength of the pressure-bearing rod material, preferably but not limited to stainless steel, the main material node plate is made of a material that matches the strength of the main material material, preferably but not limited to stainless steel, the rod node plate is welded and installed on the pressure-bearing steel pipe rod 101, the rod node plate and the main material node plate are provided with corresponding through holes for connecting the rod node plate and the main material node plate by bolts, and the main material node is welded on the main material of the guyed tower.

[0049] Those skilled in the art can also select the number of rod node plates according to the actual site of the guyed tower. To illustrate the implementation of the present invention, two groups of rod node plates are taken as an example. More groups of rod node plates are easy for those skilled in the art to think of and implement. As a preferred but non-restrictive method, multiple groups of rod node plates include a group of top node plates 103 of pressure-bearing steel pipe rods and a group of waist node plates 105 of pressure-bearing steel pipe rods. Multiple groups of main material node plates include a group of top main material node plates 104 and a group of waist main material node plates 106. The main material node plates after welding the main materials of the guyed tower can be fitted with the corresponding steel pipe rod node plates, and then the two node plates are drilled on site and connected with bolts. Each group of rod node plates includes four rod node plates, which are evenly installed at 90° intervals along the circumference of the pressure-bearing steel pipe rod 101.

[0050] like Figures 1 to 3 As shown, a waterproof module is fixedly installed on the top of the pressure-bearing rod. The waterproof module includes a top plate mounting support 107 and a waterproof top plate. The top plate mounting support 107 is fixedly installed on the top of the pressure-bearing rod, and the waterproof top plate 108 is fixedly installed on the mounting support 107.

[0051] Those skilled in the art can select appropriate materials to implement the present invention according to the actual situation of the cable tower, such as but not limited to strength, processing difficulty, cost, etc. As a preferred but non-restrictive manner, the top plate mounting support 107 is made of stainless steel and is in a circular shape, and the waterproof top plate 108 is made of stainless steel and is in a circular shape. The top plate mounting support 107 is welded to the top of the pressure rod, and the top plate mounting support 107 and the waterproof top plate 108 are provided with a plurality of aligned through holes for the top plate mounting support 107 and the waterproof top plate 108 to be connected by bolts.

[0052] The distance between the top node plate 103 of the pressure-bearing steel tube rod and the top of the pressure-bearing steel tube rod 101 is not less than the set distance value. A non-limiting example is that the distance between the top node plate 103 of the pressure-bearing steel tube rod and the top of the pressure-bearing steel tube rod 101 is not less than 100 mm.

[0053] The distance between the top node plate 103 of the pressure-bearing steel pipe rod and the waist node plate 105 of the pressure-bearing steel pipe rod is not less than the safety threshold for bending of the top node plate 103 of the pressure-bearing steel pipe rod. The way of setting the safety threshold can be arbitrarily set by those skilled in the art according to the actual site of the guyed tower. A preferred but non-limiting example is to take the steel pipe between the center horizontal line of the top node plate 103 of the pressure-bearing steel pipe rod and the center horizontal line of the waist node plate 105 of the pressure-bearing steel pipe rod as an isolator, and the shear force at the top of the isolator is opposite to the shear force at the bottom of the isolator. According to the force balance condition, there is a bending moment at the bottom of the isolator, and the strength of the bottom section must be able to resist this bending moment.

[0054] The support is a semicircular solid ball hinge support 102 made of a material that matches the strength of the pressure rod, preferably but not limited to stainless steel. The semicircular solid ball hinge support 102 is fixedly installed on the bottom surface of the pressure rod by welding and is integrally cast with the guyed tower foundation protective cap.

[0055] Embodiment 2: A reinforcement method for the leg reinforcement device of the door-type guyed tower according to Embodiment 1, comprising the following steps:

[0056] Step 1, a plurality of groups of rod node plates are fixedly installed on the pressure rod, the horizontal height of each group of rod node plates is higher than the corroded section 109 of the leg of the guyed tower, each group of rod node plates includes a plurality of rod node plates, and each rod node plate in the same group is fixedly installed on the pressure rod at the same horizontal height, corresponding to the node of the guyed tower;

[0057] In step 1, the pressure-bearing rod is a pressure-bearing steel tube rod 101, and a group of pressure-bearing steel tube rod top node plates 103 and a group of pressure-bearing steel tube rod waist node plates 105 are installed on the pressure-bearing steel tube rod 101. The pressure-bearing steel tube rod top node plates 103 are above the pressure-bearing steel tube rod waist node plates 105. Each group of pressure-bearing steel tube rod top node plates 103 includes four rod node plates, which are evenly welded on the pressure-bearing steel tube rod 101 at intervals of 90° along the circumference of the pressure-bearing steel tube rod 101.

[0058] The distance between the top node plate 103 of the pressure-bearing steel pipe rod and the top end of the pressure-bearing steel pipe rod 101 is not less than 100 mm.

[0059] Step 1 further includes: fixing a waterproof module on the top of the pressure-bearing rod, welding a top plate mounting support 107 to the top of the pressure-bearing rod, and fixing a waterproof top plate 108 on the mounting support 107 by bolts.

[0060] Step 2, multiple groups of main material node plates are fixedly installed on the main material of the cable tower, one group of main material node plates corresponds to one group of rod node plates, the two have the same height, each group of main material node plates includes multiple main material node plates, and each main material node plate is fixedly installed on the main material of the cable tower;

[0061] Step 3: Fix the support on the bottom surface of the pressure rod.

[0062] Step 4: At the reinforcement site, excavate the concrete protective cap of the guyed tower, insert the pressure rod, drill holes at the connection parts of the corresponding rod node plate and the main material node plate, and connect them with bolts;

[0063] Step 5: Use concrete to cast the pressure rod and foundation protection cap into a whole.

[0064] The beneficial effects of the present invention are that, compared with the prior art, after the implementation of the reinforcement scheme, the integrity is stronger than the original structure, and the structural strength reduced by corrosion can be effectively supplemented; by performing anti-corrosion treatment on the pressure-bearing steel pipe rods, the harm caused by leg corrosion can be effectively prevented in the medium and long term; it saves materials, has simple components, is easy to process, is easy to construct and is very economical.

[0065] The applicant of the present invention has made a detailed explanation and description of the implementation examples of the present invention in conjunction with the drawings in the specification. However, those skilled in the art should understand that the above implementation examples are only preferred implementation schemes of the present invention, and the detailed description is only to help readers better understand the spirit of the present invention, but not to limit the scope of protection of the present invention. On the contrary, any improvements or modifications based on the inventive spirit of the present invention should fall within the scope of protection of the present invention.

Claims

1. A leg reinforcement device for a door-type guyed tower, comprising: Compression rods, multiple groups of rod node plates, multiple groups of main material node plates and supports, characterized in that: A plurality of groups of rod node plates are fixedly installed on the pressure rod from top to bottom, the horizontal height of each group of rod node plates is higher than the corroded section (109) of the leg of the guyed tower, each group of rod node plates includes a plurality of rod node plates, and each rod node plate in the same group is fixedly installed on the pressure rod at the same horizontal height, corresponding to the node of the guyed tower; Multiple groups of main material node plates are fixedly mounted on multiple groups of rod node plates from top to bottom in a manner that one group of main material node plates corresponds to one group of rod node plates. Each group of main material node plates includes multiple main material node plates. Each main material node plate is fixedly mounted on a rod node plate correspondingly. Each main material node plate is also fixedly mounted on the main material of the guyed tower. The support is fixedly installed on the bottom surface of the pressure rod and cast in the concrete protective cap of the guyed pole tower; The pressure rod is installed vertically, the top of the pressure rod refers to the end away from the ground during installation, the bottom of the pressure rod refers to the end close to the ground during installation, and from top to bottom it refers to the direction towards the ground.

2. The leg reinforcement device of the gate-type guyed tower according to claim 1, characterized in that: The pressure-bearing rod is a pressure-bearing steel tube rod (101), and the rod node plate is welded and installed on the pressure-bearing steel tube rod (101). The rod node plate and the main material node plate are provided with corresponding through holes for connecting the rod node plate and the main material node plate by bolts. The main material node plate is welded on the main material of the cable tower.

3. The leg reinforcement device of the gate-type guyed tower according to claim 2, characterized in that: Each group of rod node plates includes four rod node plates which are evenly installed at intervals of 90 degrees along the circumference of the pressure-bearing steel pipe rod (101).

4. The leg reinforcement device of the gate-type guyed tower according to claim 2, characterized in that: The plurality of rod node plates include a group of top node plates (103) of pressure-bearing steel pipe rods and a group of waist node plates (105) of pressure-bearing steel pipe rods, and the plurality of main material node plates include a group of top main material node plates (104) and a group of waist main material node plates (106).

5. The leg reinforcement device of the gate-type guyed tower according to claim 3, characterized in that: The distance between the top node plate (103) of the pressure-bearing steel pipe rod and the top end of the pressure-bearing steel pipe rod (101) is not less than a set distance.

6. The leg reinforcement device of the door-type guyed tower according to claim 4 or 5, characterized in that: The distance between the top node plate (103) of the pressure-bearing steel tube rod and the waist node plate (105) of the pressure-bearing steel tube rod at least satisfies the following condition: the cross-sectional strength of the pressure-bearing steel tube rod (101) at the center horizontal line position of the waist node plate (105) of the pressure-bearing steel tube rod is greater than the bending moment there.

7. The leg reinforcement device of a portal-type guyed tower according to any one of claims 1 to 6, characterized in that: The support is a semicircular solid spherical hinge support (102), which is fixedly installed on the bottom surface of the pressure-bearing rod by welding and is integrally cast with the guyed tower foundation protection cap.

8. The leg reinforcement device of a portal-type guyed tower according to any one of claims 1 to 6, characterized in that: A waterproof module is fixedly mounted on the top of the pressure-bearing rod, and the waterproof module comprises a top plate mounting support (107) and a waterproof top plate. The top plate mounting support (107) is fixedly mounted on the top of the pressure-bearing rod, and the waterproof top plate (108) is fixedly mounted on the mounting support (107).

9. The leg reinforcement device of the gate-type guyed tower according to claim 8, characterized in that: The top plate mounting support (107) is made of stainless steel and is in a circular shape. The waterproof top plate (108) is made of stainless steel and is in a circular shape. The top plate mounting support (107) is welded to the top end of the pressure-bearing rod. The top plate mounting support (107) and the waterproof top plate (108) are provided with a plurality of aligned through holes for connecting the top plate mounting support (107) and the waterproof top plate (108) by bolts.

10. A reinforcement method for the leg reinforcement device of a door-type guyed tower according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1, fixing and installing a plurality of groups of rod node plates on the pressure-bearing rod, wherein the horizontal height of each group of rod node plates is higher than the corroded section (109) of the leg of the guyed tower, each group of rod node plates includes a plurality of rod node plates, and each rod node plate in the same group is fixedly installed on the pressure-bearing rod at the same horizontal height, corresponding to the node of the guyed tower; Step 2, multiple groups of main material node plates are fixedly installed on the main material of the cable tower, one group of main material node plates corresponds to one group of rod node plates, the two have the same height, each group of main material node plates includes multiple main material node plates, and each main material node plate is fixedly installed on the main material of the cable tower; Step 3: Fix the support on the bottom surface of the pressure rod. Step 4: At the reinforcement site, excavate the concrete protective cap of the guyed tower, insert the pressure rod, drill holes at the connection parts of the corresponding rod node plate and the main material node plate, and connect them with bolts; Step 5: Use concrete to cast the pressure rod and foundation protection cap into a whole.

11. The reinforcement method according to claim 10, characterized in that: Step 1 further includes: fixing a waterproof module on the top of the pressure-bearing rod, welding a top plate mounting support (107) to the top of the pressure-bearing rod, and fixing a waterproof top plate (108) on the mounting support (107) by bolts.

12. The reinforcement method according to claim 10 or 11, characterized in that: In step 1, the pressure-bearing rod is a pressure-bearing steel tube rod (101), and a group of pressure-bearing steel tube rod top node plates (103) and a group of pressure-bearing steel tube rod waist node plates (105) are installed on the pressure-bearing steel tube rod (101). The pressure-bearing steel tube rod top node plates (103) are above the pressure-bearing steel tube rod waist node plates (105), and each group of pressure-bearing steel tube rod top node plates (103) includes four rod node plates, which are uniformly welded to the pressure-bearing steel tube rod (101) at intervals of 90 degrees along the circumference of the pressure-bearing steel tube rod (101).

13. The reinforcement method according to claim 12, characterized in that: In step 1, the distance between the top node plate (103) of the pressure-bearing steel pipe rod and the top end of the pressure-bearing steel pipe rod (101) is not less than 100 mm.

14. The reinforcement method according to claim 12, characterized in that: In step 2, four main material node plates (104) in a group of top main material node plates (104) are welded to the main material of the cable tower, and four waist main material node plates (106) in a group of waist main material node plates (106) are welded to the main material of the cable tower.

15. The reinforcement method according to claim 12, characterized in that: In step 3, the semicircular solid spherical hinge support (102) is welded to the bottom surface of the pressure-bearing steel pipe rod (101).

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