Reinforcing device for power transmission and transformation tower footing in severe cold wading environment and construction method

Abstract

The invention discloses a reinforcing device and construction method for a power transmission and transformation tower footing in a severe cold wading environment, the reinforcing device comprises a tower footing and a tower footing reinforcing mechanism, the tower footing reinforcing mechanism is connected with the tower footing and used for reinforcing the tower footing; the tower footing reinforcing mechanism comprises a right-angle support, a tower footing fixing support, an anti-pulling rod and a support fixing support. The number of the right-angle supports is four, the four right-angle supports are spliced into a frame to be arranged around the periphery of the tower footing, the inner walls of the angle supports are fixedly connected with tower footing fixing supports, and the tower footing fixing supports are fixedly connected to the tower footing; an anti-pulling rod is arranged on the lower portion of the right-angle support and inserted into a soil body during construction. The support fixing support is arranged in the center of the whole tower footing and used for fixing the four right-angle supports together. Temporary reinforcement and repair of the power transmission and transformation tower footing foundation in the severe cold wading environment can be achieved, and the toughness level of the power transmission and transformation foundation for resisting the ice pushing-frost heaving effect in winter is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission lines, and relates to a reinforcement device and a construction method for a power transmission and transformation tower base, and specifically to a reinforcement device and a construction method for a power transmission and transformation tower base in a severely cold and wading environment. Background Art

[0003] In winter, the severely cold areas will freeze, and the transmission line tower base will be subjected to strong ice thrust, and the tower foundation will also be subjected to tangential frost heave. Under this synergistic effect, the tower base will be seriously tilted or even collapsed. Since the design phase does not consider the impact of this synergistic effect and special design, there is little research on this in China. Therefore, how to temporarily reinforce and repair the transmission and transformation tower foundation in a severely cold and wading environment to ensure that it has sufficient strength in winter will become particularly important. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a reinforcement device and construction method for the power transmission and transformation tower foundation in a severe cold and water-wading environment. The method can solve the temporary reinforcement and emergency repair of the power transmission and transformation tower foundation in a severe cold and water-wading environment, improve the toughness level of the power transmission and transformation foundation in winter to resist ice push and frost heave, and is applicable to the reinforcement of the tower foundation under various other working conditions. In addition, the reinforcement device can be used in conjunction with a water-isolating structure, which can provide a construction space for the tower foundation in a water-rich environment, meeting the temporary reinforcement or emergency repair of the tower foundation under extreme rainstorm conditions.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A reinforcement device for a power transmission and transformation tower base in a severe cold and wading environment, comprising a tower base and a tower base reinforcement mechanism, wherein:

[0007] The tower base reinforcement mechanism is connected to the tower base and is used to reinforce the tower base;

[0008] The tower base reinforcement mechanism includes a right-angle bracket, a tower base fixing support, an anti-pullout rod and a bracket fixing support;

[0009] A total of four right-angle brackets are provided, and the four right-angle brackets are spliced ​​into a frame and arranged around the outer periphery of the tower base. A tower base fixing support is fixedly connected to the inner wall of the right-angle bracket, and the tower base fixing support is fixedly connected to the tower base;

[0010] An anti-pullout rod is provided at the lower part of the right-angle bracket, and the anti-pullout rod is inserted into the soil during construction;

[0011] The bracket fixing support is arranged at the center of the entire tower base and is used to fix four right-angle brackets together.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The present invention can meet the requirements of structural reinforcement and construction reinforcement of the tower base in severe cold and wading environments, and improve the toughness level of the power transmission and transformation foundation in winter to resist ice push and frost heave. The structural reinforcement device of the tower base can be reasonably adjusted according to the foundation size through active connection, and is suitable for different foundation types and different tower base sizes, with good applicability. The reinforcement structure of the tower base uses an external expansion water-proof structure to meet the requirements of tower base reinforcement under extreme rainfall conditions, making up for the technical gap, and proposes a construction method for tower base reinforcement, using special components of ice-breaking angle steel to increase ice-breaking capacity. The construction method is simple in process, easy to promote, and has low construction cost.

[0014] 2. The tower base reinforcement mechanism of the present invention includes a plurality of active connections, and tightening can be achieved through the built-in rods without the need for other tools. It has good flexibility and can improve construction efficiency.

[0015] 3. The tower base reinforcement structure and construction method of the present invention can meet the reinforcement requirements under various other working conditions and have good universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the structure of the tower base reinforcement device;

[0017] Figure 2 It is the main structural diagram of the tower foundation reinforcement device;

[0018] Figure 3 It is the top and main view structural diagram of the tower foundation reinforcement mechanism;

[0019] Figure 4 It is a schematic diagram of a right angle bracket connection member;

[0020] Figure 5 It is a schematic diagram of the tower base fixed support;

[0021] Figure 6 It is a schematic diagram of the anti-pullout rod;

[0022] Figure 7 It is a schematic diagram of the bracket fixing support;

[0023] Figure 8 is a schematic diagram of the locking mechanism;

[0024] Fig. 9 It is a schematic diagram of the buckle mechanism;

[0025] Fig.10 It is a schematic diagram of the outward expansion waterproof structure.

[0026] Fig.11 It is a main schematic diagram of the construction method of tower foundation reinforcement.

[0027] Fig.12 It is a top view schematic diagram of the construction method of tower foundation reinforcement. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below in conjunction with the accompanying drawings, but is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention should be included in the protection scope of the present invention.

[0029] Specific implementation method 1: This implementation method provides a reinforcement device for the transmission and transformation tower base in a severe cold and wading environment, such as Figure 1 and Figure 2 As shown, the reinforcement device includes a tower base 1 and a tower base reinforcement mechanism 2, wherein: the tower base reinforcement mechanism 2 is connected to the tower base 1 and is used to reinforce the tower base 1. This embodiment can meet the needs of tower base structure reinforcement under the following adverse conditions: ground collapse and surface basin movement caused by mining collapse, resulting in uneven settlement of the transmission tower foundation. Through this embodiment, good technical effects can be achieved.

[0030] In this embodiment, the tower base 1 refers to various types of power transmission and transformation foundation types, such as pile foundation, step foundation, etc., which are used to bear various loads and are crucial to ensuring the stability of the transmission tower.

[0031] In this embodiment, the tower base reinforcement mechanism 2 is a movable connection device that can reinforce power transmission and transformation foundations of any size, and can also reinforce tower poles under special circumstances, in order to make the entire foundation have better integrity and enhance its ability to resist uneven deformation.

[0032] like Figure 3 As shown, the tower base reinforcement mechanism 2 mainly includes the following parts: a right-angle bracket 21, a tower base fixing support 22, an inner support 23, an anti-pullout rod 24 and a bracket fixing support 25, wherein:

[0033] A total of four right-angle brackets 21 are provided. The four right-angle brackets 21 are spliced ​​into a frame and arranged around the outer periphery of the tower base 1. A tower base fixing support 22 is fixedly connected to the inner wall of the right-angle bracket 21, and the tower base fixing support 22 is fixedly connected to the tower base 1.

[0034] An inner support 23 is provided between the tower base fixed supports 22 to optimize the force distribution of the overall structure;

[0035] The anti-pullout rod 24 is arranged at the lower part of the right-angle bracket 21 and inserted into the soil during construction to fix the overall structure and play an anti-pullout role for the tower base reinforcement device in winter;

[0036] The bracket fixing support 25 is arranged at the center of the entire tower base, and is used to fix the four right-angle brackets 21 together, so that the entire reinforcement device becomes a whole and resists uneven deformation.

[0037] like Figure 4 As shown, the right-angle brackets 21 are connected by a connecting assembly, and the connecting assembly is composed of a bolt 211, a rotating cylinder 212 and a rotating arm 213;

[0038] Bolts 211 are provided at both ends of the rotating drum 212, and the rotating drum 212 is connected to the right-angle bracket 21 through the bolts 211;

[0039] The rotating drum 212 is provided with a rotating arm 213 along the rotation direction of the bolt 211;

[0040] One end of the rotating arm 213 is fixedly connected to the rotating drum 212 and can rotate around the central axis of the rotating drum 212. The other end of the rotating arm 213 is provided with a bolt 211, and the rotating arm 213 is connected to the connecting rod 251 of the bracket fixing support 25 through the bolt 211;

[0041] The bolts 211 are pre-connected with the right-angle bracket 21, and the bolts 211 at both ends of the right-angle bracket 21 are connected through a rotating cylinder 212. The rotating cylinder 212 is provided with threads in opposite directions, and the rotating cylinder 212 can be directly rotated to complete the fixation of the right-angle bracket 21. The rotating cylinder 212 is provided with a longer rotating arm 213 along the rotation direction of the bolt, and can be directly tightened without the aid of other tools, making the spacing adjustment more convenient.

[0042] like Figure 5 As shown, a slot 221 is provided on the tower base 1 , and a tower base fixing support 22 is embedded in the slot 221 . The tower base fixing support 22 is connected to the right-angle bracket 21 via a bolt 222 .

[0043] like Figure 6 As shown, the anti-pull-out rod 24 is arranged at the lower part of the right-angle bracket 21, and three anti-pull-out rods 24 are arranged at the lower part of each right-angle bracket 21, and a cone head 242 is arranged at the bottom of the anti-pull-out rod 24, and a disc structure 241 is arranged on the rod body of the anti-pull-out rod 24. The disc structure 241 can make the anti-pull-out rod 24 have a higher pull-out bearing capacity in the frozen soil in winter, so that the tower base reinforcement device will not undergo frost heave-ice push deformation in advance, thereby ensuring the reinforcement effect, and the cone head 242 can make the anti-pull-out rod 24 easier to penetrate the soil and speed up the construction progress.

[0044] like Figure 7As shown, the bracket fixing support 25 is composed of a connecting rod 251, a locking mechanism 252 and a buckle mechanism 253; there are 4 connecting rods 251 in total, one end of the connecting rod 251 is connected to the rotating arm 213 of the connecting assembly by a bolt, and the other end of the connecting rod 251 is gathered to the locking mechanism 252 for tightening and locking; the buckle mechanism 253 is installed on the connecting rod 251, so that the entire reinforcement device has better strength; one end of the inner support 23 of the tower base reinforcement mechanism 2 is fixed to the connecting rod 251, and the other end is fixed to the tower base fixing support 22. Bolts are set at both ends of the connecting rod 251, and threads are pre-set in the rotating arm 213, which can be connected by rotating the connecting rod 251, and threads are also set in the locking mechanism 252, which can be fixed by rotating the locking mechanism 252.

[0045] like Figure 8 As shown, the locking mechanism 252 is composed of a first rotating cylinder 2521, a bolt 2522, a second rotating cylinder 2523 and a rotating arm 2524. The second rotating cylinder 2523 is vertically arranged on both sides of the first rotating cylinder 2521, and the rotating arm 2524 is installed on both sides of the second rotating cylinder 2523. The two ends of the first rotating cylinder 2521 are connected to the connecting rod 251 in one direction through the bolt 2522, and the second rotating cylinder 2523 is connected to the connecting rod 251 in the other direction through the bolt 2522. The specific connection method is as follows: First, the first rotating cylinder 2521 is connected to the connecting rod 251 in one direction. The interior of the first rotating cylinder 2521 is designed with threads in opposite directions, and tightening can be achieved by rotating the bolts 2522 installed on both sides of the first rotating cylinder 2521. After tightening, ensure that the bolts 2522 on both sides are horizontally aligned. Next, the two second rotating cylinders 2523 are connected to the first rotating cylinder 2521, and the first rotating cylinder 2521 is fastened to the connecting rod 251 in the other direction through the second rotating cylinder 2523. Similarly, the second rotating cylinder 2523 is also equipped with threads in the opposite direction, and the fastening is achieved by rotating the rotating arms 2524 installed on both sides of the second rotating cylinder 2523.

[0046] like Fig. 9 As shown, the buckle mechanism 253 is a square cover plate with buckles at its four corners, and the upper part of the connecting rod 251 is provided with slots at different positions. After the locking mechanism 252 completes locking, the buckle of the buckle mechanism 253 can be buckled into the slot of the connecting rod 251 according to the position to ensure that the tightened position does not loosen and protect the locking mechanism 252 from environmental influences.

[0047] Specific embodiment 2: This embodiment is different from specific embodiment 1 in that the reinforcement device also includes an outward-expanding water-isolating structure 3, and the outward-expanding water-isolating structure 3 is connected to the tower base reinforcement mechanism 2, which is used to provide water-isolating construction conditions in a water-rich environment, and the foundation can be further reinforced after drainage.

[0048] In this embodiment, the outward expansion water-blocking structure 3 is connected to the tower base reinforcement mechanism 2 through a movable connection device, so its water-blocking height can be adjusted according to actual needs. When the external water level is high, it can be set to a higher water-blocking height; when the external water level is low, it can be set to a lower water-blocking height. The purpose is to isolate the tower base 1 from the surrounding environment, and the tower base 1 can be reinforced or repaired after the internal water is drained.

[0049] like Fig.10 As shown, the outward expansion water-proof structure 3 includes a guide beam 31 and a water retaining plate 32. The guide beam 31 is installed on the outside of the right-angle bracket 21 and fixed on the anti-pullout rod 24. The fixing method is a detachable bolt fixing, and its function is to guide the installation of the water retaining plate 32. The water retaining plate 32 is a factory-prefabricated curved steel plate, which is similar in shape to a steel sheet pile. It needs to be assembled piece by piece according to the guide beam 31, and each piece needs to be fixed to the right-angle bracket 21 with bolts. After the entire outward expansion water-proof structure 3 is fully installed, according to the water pressure of the external water level, if the water level is low, no internal support may be added; if the water level is high, diagonal braces should be applied at the corners; if the water level is very high, diagonal braces should be provided and transverse supports should be added to ensure the stability of the entire maintenance structure.

[0050] In this embodiment, the specific installation process of the tower base reinforcement device is as follows: (1) Place four right-angle brackets at the tower base, insert the anti-pullout rod into the soil according to the position, fix the inner tower base fixing support to the tower base, and then adjust the rotating cylinder according to the spacing to fix the four right-angle brackets. (2) Connect the four connecting rods: First, fix the two connecting rods in one direction with the first rotating cylinder, then install the two second rotating cylinders in the vertical direction, and then fix the other two connecting rods by rotating the second rotating cylinder, and then install the snap mechanism on the upper part of the entire rotating cylinder, and finally apply the internal support structure at the reserved position. (3) Install the outward expansion waterproof structure: First, it is necessary to clean the soil layer for installing the guide beam, then place the guide beam and fix it at the anti-pullout rod, and then assemble and fix them piece by piece, and set the internal support according to the needs to complete the installation of the entire tower base reinforcement device.

[0051] It is worth noting that since the tower base reinforcement device will be in a water-rich environment for a long time, the material of the device is mainly steel, so the device needs to be coated with necessary anti-corrosion. First, the surface should be derusted, and the surface should be free of grease, dirt, oxide scale, paint, rust and other attachments. Then, the spraying operation should be carried out from top to bottom, from inside to outside, and from corners to large surfaces.

[0052] This embodiment also provides a construction method for tower foundation reinforcement, such as Fig.11 , Fig.12 As shown, the method comprises the following steps:

[0053] Step 1: Install the tower base reinforcement mechanism and the outward expansion water-proof structure in a water-rich environment to create a construction space;

[0054] Step 2: Pump out all the water inside the water-proof structure around the tower base;

[0055] Step 3, removing rust from the concrete-encapsulated part of the steel components of the tower in the flooded area;

[0056] Step 4: Roughen the surface of the original foot-wrapping concrete, and use C25 concrete to wrap the tower legs in the flooded area in a square shape. The height of the foot wrapping should be no less than 1m, and ice-breaking angle steel should be embedded outside the newly added foot-wrapping concrete to enhance its ice-breaking ability in winter.

[0057] Step 5: Replace the outer side of the foot with coarse sand, and protect the outer periphery of the tower with wire cage blocks. The scope of replacement and reinforcement is the inside of the tower leg.

[0058] Step 6: When the concrete strength meets the requirements, the external expansion waterproof structure can be dismantled and the next tower base can be reinforced.

[0059] Specific implementation method three: This implementation method provides a tower foundation reinforcement construction method. In this implementation method, the tower foundation reinforcement device is not installed, and the tower foundation is directly subjected to the above-mentioned construction reinforcement method. At this time, the surroundings of each tower leg should be reinforced, not just the inner side. For example, when the site conditions are good, the tower foundation of the transmission tower is reinforced in advance to prevent uneven settlement of the tower foundation under extremely unfavorable conditions, and to achieve better technical effects. In order to avoid repetition, this will not be described in detail.

Claims

1. A reinforcement device for the foundation of a power transmission and transformation tower in a severe cold and wading environment, characterized in that The reinforcement device includes a tower base and a tower base reinforcement mechanism, wherein: The tower base reinforcement mechanism is connected to the tower base and is used to reinforce the tower base; The tower base reinforcement mechanism includes a right-angle bracket, a tower base fixing support, an anti-pullout rod and a bracket fixing support; A total of four right-angle brackets are provided, and the four right-angle brackets are spliced ​​into a frame and arranged around the outer periphery of the tower base. A tower base fixing support is fixedly connected to the inner wall of the right-angle bracket, and the tower base fixing support is fixedly connected to the tower base; An anti-pullout rod is provided at the lower part of the right-angle bracket, and the anti-pullout rod is inserted into the soil during construction; The bracket fixing support is arranged at the center of the entire tower base and is used to fix four right-angle brackets together.

2. The reinforcement device for the power transmission and transformation tower foundation in severe cold and water-wading environment according to claim 1 is characterized in that The right-angle brackets are connected by a connecting assembly, and the connecting assembly includes a bolt, a rotating cylinder and a rotating arm; Bolts are provided at both ends of the rotating drum, and the rotating drum is connected to the right-angle bracket through the bolts; The rotating drum is provided with a rotating arm along the rotation direction of the bolt.

3. The reinforcement device for the power transmission and transformation tower foundation in severe cold and water-wading environment according to claim 1 is characterized in that A clamping groove is arranged on the tower base, a tower base fixing support is embedded in the clamping groove, and the tower base fixing support is connected with the right-angle bracket through bolts.

4. The reinforcement device for the power transmission and transformation tower foundation in severe cold and water-wading environment according to claim 1 is characterized in that A cone head is arranged at the bottom of the anti-pullout rod, and a disc structure is arranged on the rod body of the anti-pullout rod.

5. The reinforcement device for the power transmission and transformation tower foundation in severe cold and water-wading environment according to claim 1 is characterized in that The bracket fixing support includes a connecting rod, a locking mechanism and a snap mechanism; there are a total of 4 connecting rods, one end of the connecting rod is connected to the rotating arm of the connecting assembly through a bolt, and the other end of the connecting rod is gathered to the locking mechanism for tightening and locking; the snap mechanism is installed on the connecting rod.

6. The reinforcement device for the power transmission and transformation tower foundation in severe cold and water-wading environment according to claim 5 is characterized in that An inner support is arranged between the tower base fixing supports, one end of the inner support is fixed on the connecting rod, and the other end is fixed on the tower base fixing support.

7. The reinforcement device for the power transmission and transformation tower foundation in severe cold and water-wading environment according to claim 5 is characterized in that The locking mechanism includes a first rotating cylinder, a bolt, a second rotating cylinder and a rotating arm. The second rotating cylinder is vertically arranged on both sides of the first rotating cylinder, and the rotating arms are installed on both sides of the second rotating cylinder. The two ends of the first rotating cylinder are connected to the connecting rod in one direction by bolts, and the second rotating cylinder is connected to the connecting rod in the other direction by bolts; the buckle mechanism is a square cover plate with buckles at its four corners, and the upper part of the connecting rod is provided with slots at different positions. After the locking mechanism completes locking, the buckle of the buckle mechanism is buckled into the slot of the connecting rod according to the position.

8. The reinforcement device for the power transmission and transformation tower foundation in severe cold and water-wading environment according to claim 1 is characterized in that The reinforcement device also includes an outward expansion water-isolating structure, which is connected to the tower base reinforcement mechanism and is used to provide water-isolating construction conditions in a water-rich environment.

9. The reinforcement device for the power transmission and transformation tower foundation in severe cold and water-wading environment according to claim 8 is characterized in that The outward expansion water-blocking structure includes a guide beam and a water retaining plate. The guide beam is installed on the outside of the right-angle bracket and fixed on the anti-pullout rod to guide the installation of the water retaining plate. The water retaining plate is assembled piece by piece according to the guide beam and fixed on the right-angle bracket.

10. A construction method for a reinforcement device for a transmission and transformation tower foundation in a severe cold and water-wading environment as claimed in any one of claims 8 to 9, characterized in that The method comprises the following steps: Step 1: Install the tower base reinforcement mechanism and the outward expansion water-proof structure in a water-rich environment to create a construction space; Step 2: Pump out all the water inside the water-proof structure around the tower base; Step 3, removing rust from the concrete-encapsulated part of the steel components of the tower in the flooded area; Step 4: Roughen the surface of the original foot-wrapping concrete, and use C25 concrete to wrap the tower legs in the flooded area in a square shape. The height of the foot wrapping should be no less than 1m, and ice-breaking angle steel should be embedded outside the newly added foot-wrapping concrete to enhance its ice-breaking ability in winter. Step 5: Replace the outer side of the foot with coarse sand, and protect the outer periphery of the tower with wire cage blocks. The scope of replacement and reinforcement is the inside of the tower leg; Step 6: When the concrete strength meets the requirements, dismantle the external expansion waterproof structure and continue to reinforce the next tower base.

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