CN113482034B - A correction method for uneven settlement of transmission towers - Google Patents

Abstract

A method for rectifying uneven settlement of a power transmission tower, step 1: using a well-shaped inverted beam and a connecting beam to reinforce the independent foundation of the iron tower; step 2: opening a jacking tunnel and an anchor tunnel; Jacking holes are set up, and anchoring holes are set at both ends of each connecting beam in the length direction; Step 3: Install jacking screws and anchor rods; insert a jacking screw in each jacking hole, And make its lower end fixedly connected with the connector embedded in the foundation inverted beam; install jacking nuts on the lower part of the jacking screw; insert an anchor rod in each anchoring hole, and anchor the lower end of the anchor rod In the foundation inverted beam; the upper part of the anchor rod is respectively sleeved with gaskets and anchor bolt nuts; step 4: place the jack and perform leveling operations; the part between the end of the well-shaped inverted beam and the foundation inverted beam Set a jack, and adjust the deviation through the jack. This method can realize the quick adjustment of the inclined transmission tower.

Description

A correction method for uneven settlement of transmission towers

technical field

The invention relates to the technical field of deflection correction of electric transmission towers, in particular to a deflection correction method for uneven settlement of electric transmission towers.

Background technique

Due to serious water and soil erosion in some areas, problems such as surface deformation, cracking, and subsidence occur frequently, which can easily cause uneven settlement of the tower foundation of the transmission line in the area, which will lead to inclination, displacement, and deformation of the iron tower. As a result, the stress inside the tower changes, which in turn threatens the safety of the line.

For transmission lines in normal operation, there are two common treatment methods: one is off-site transformation, that is, re-selecting the line near the existing line, and building a new iron tower to replace it; the other is to repair the tilted iron tower. Corrective processing. Considering the economic and social impact caused by the power outage construction of the iron tower, as well as the influence of the correction load on the tower structure, the uneven correction method of the transmission tower can effectively realize the settlement correction function. This method can not only save costs, but also improve the tower Safety and stability are of great significance to the safe operation of transmission lines.

Contents of the invention

Aiming at the problems existing in the above-mentioned prior art, the present invention provides a method for rectifying the uneven settlement of the transmission iron tower. The quick adjustment of the inclined transmission tower can effectively ensure the safe operation of the transmission line.

In order to achieve the above object, the present invention provides a method for rectifying the uneven settlement of the power transmission tower, including the power transmission tower with four independent foundations of the iron towers, the four independent foundations of the iron towers are distributed at the four corners of the square shape, and also includes the following steps:

Step 1: Strengthen the independent foundation of the iron tower;

Install the well-shaped inverted beams on the top of the independent foundations of the four iron towers first, and make the four intersections of the inverted beams correspondingly fixedly connected to the upper ends of the independent foundations of the four iron towers, and connect the four independent foundations of the iron towers into an open Integral; then four connecting beams are fixedly connected between the four open ends of the well-shaped inverted beams to form a closed whole;

Step 2: Open jacking tunnels and anchor tunnels;

Each of the four open ends of the well-shaped inverted beam is provided with a longitudinally penetrating jacking channel, and each end of the length direction of each connecting beam is provided with a longitudinally penetrating anchoring channel;

Step 3: Install the jacking screw and anchor;

A jacking screw is inserted in each jacking hole, and the upper end of the jacking screw extends above the upper end surface of the well-shaped inverted beam, and the lower end of the jacking screw extends to the upper end of the foundation inverted beam, and is connected with the upper end of the foundation inverted beam. The connectors pre-buried in the foundation inverted beam are fixedly connected; at the same time, the jacking nut is installed on the lower part of the jacking screw through thread fit, and the upper end of the jacking nut is abutted against the lower end surface of the well-shaped inverted beam;

An anchor rod is inserted in each anchor hole, and the upper end of the anchor rod extends above the upper end surface of the connecting beam, and the lower end of the anchor rod extends to the inside of the foundation inverted beam, and is anchored in the foundation inverted beam; At the same time, a gasket and an anchor nut are sleeved on the upper part of the anchor rod, and the gasket abuts against the upper end surface of the connecting beam through the action of the anchor nut;

Step 4: Place the jack and perform leveling operations;

A jack is supported at the end of the well-shaped inverted beam and the part between the foundation inverted beam, and the jack is located on the lower side in the inclined state, and the upward reaction force is provided by the jack to lift the well-shaped inverted beam. to correct the deviation of the transmission tower by adjusting the inclination of the well-shaped inverted beam; during the lifting process of the jack, adjust upward and lock the jacking nut on the lower side, and use the jacking nut to align the well-shaped beam. The lower end surface of the inverted beam is used for height positioning and support. At the same time, the anchor nut on the higher side is adjusted downward and locked, and the upper end surface of the connecting beam is pressed down and anchored through the gasket to take advantage of the lower position. The interaction between the jacking nut on the side and the anchor nut on the higher side can quickly and effectively correct and reinforce the transmission tower until the transmission tower reaches a horizontal state.

Preferably, in step 3, the connecting piece is composed of a pre-embedded screw pre-embedded in the foundation inverted beam and a flange fixedly connected to the upper end of the pre-embedded screw.

Preferably, in step 3, the pre-embedded screw is coaxially arranged with the jacking screw.

Further, in order to achieve effective position locking of the well-shaped inverted beam, in step 4, after the power transmission tower reaches the horizontal state, a lock nut is installed on the upper part of each jacking screw through thread fit, and the lock nut is tightened and locked The nut abuts against the upper end face of the well-shaped inverted beam.

Further, in order to achieve a stable and reliable connection, and at the same time facilitate disassembly and maintenance, the flange is in the shape of a ring, and a mounting hole matching the jacking screw is opened in the center, and a plurality of positioning channels are opened around the mounting hole. hole, the nut of the embedded screw rod is provided with a plurality of positioning blind holes corresponding to a plurality of positioning through holes, and the flange and the embedded screw rod are fixedly connected through the connecting bolts that pass through the positioning through holes and the positioning blind holes. .

The method in the invention has simple operation, convenient construction process, low economic cost and strong practicability. This method can also reinforce the foundation structure without destroying the original foundation structure while correcting the deviation, and there is no impact correction load or small impact during the construction process. The deviation correction adjustment process is safer and more reliable. At the same time, the safety and stability of the original transmission tower can be improved.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the A-A direction sectional view of Fig. 1;

Fig. 3 is the structural representation of flange among the present invention;

Fig. 4 is a structural schematic diagram of the embedded bolt in the present invention.

In the figure: 1. Independent foundation of the iron tower, 2. Well-shaped inverted beam, 3. Connecting beam, 4. Foundation inverted beam, 5. Jacking screw, 6. Jacking nut, 7. Flange, 8. Embedded screw, 9, anchor rod, 10, anchor rod nut, 11, gasket, 12, jack, 13, jacking tunnel, 14, anchor tunnel, 15, lock nut, 16, installation hole, 17, positioning through hole, 18, Locate blind holes.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing.

As shown in Figures 1 to 4, a method for correcting uneven settlement of a power transmission tower includes a power transmission tower with four independent foundations 1 of iron towers, and the independent foundations 1 of four iron towers are distributed at the four corners of the square, and also includes the following steps :

Step 1: Strengthen the independent foundation of the iron tower 1;

Install the well-shaped inverted beam 2 on the top of the independent foundation 1 of the four iron towers first, and make the four intersections of the inverted beam 2 correspondingly fixedly connected to the upper ends of the independent foundation 1 of the four iron towers, and connect the four independent foundations of the four iron towers form an open whole; and then use four connecting beams 3 for fixed connection between the four open ends of the well-shaped inverted beam 2 to form a closed whole;

Step 2: setting up the jacking tunnel 13 and the anchoring tunnel 14;

Each of the four open ends of the well-shaped inverted beam 2 is provided with a vertically penetrating jacking tunnel 13, and each end of the length direction of each connecting beam 3 is provided with a longitudinally penetrating anchoring tunnel 14;

Step 3: Install jacking screw 5 and anchor rod 9;

A jacking screw 5 is inserted in each jacking tunnel 13, and the upper end of the jacking screw 5 extends above the upper end surface of the well-shaped inverted beam 2, and the lower end of the jacking screw 5 extends to the foundation inverted beam. 4, and is fixedly connected with the connector embedded in the foundation inverted beam 4; at the same time, the jacking nut 6 is installed on the bottom of the jacking screw 5 through threads, and the upper end of the jacking nut 6 is aligned with the well-shaped inverted beam. The lower end faces of beams 2 are in contact with each other;

An anchor rod 9 is inserted in each anchor hole 14, and the upper end of the anchor rod 9 is extended above the upper end surface of the connecting beam 3, and the lower end of the anchor rod 9 is extended to the inside of the foundation inverted beam 4, and anchored In the foundation inverted beam 4; at the same time, a gasket 11 and an anchor nut 10 are sleeved on the upper part of the anchor rod 9, and the gasket 11 abuts against the upper end surface of the connecting beam 3 through the action of the anchor nut 10;

Step 4: Place the jack 12 and perform leveling operation;

A jack 12 is supported at the part between the end of the well-shaped inverted beam 2 and the foundation inverted beam 4, and the jack 12 is positioned on the lower side of the tilted state, and the jack 12 is used to lift to provide an upward reaction force. Lift one side of the well-shaped inverted beam 2 to correct the deviation of the transmission tower by adjusting the inclination of the well-shaped inverted beam 2; during the lifting process of the jack 12, adjust upward and lock the jacking nut 6 on the lower side , and use the jacking nut 6 to position and support the lower end surface of the well-shaped inverted beam 2. At the same time, adjust and lock the anchor nut 10 on the higher side downward, and use the spacer 11 to connect the connecting beam 3 The upper end is pressed down and anchored; if the power transmission tower cannot be leveled at one time during the jacking process, then according to the tilted state of the well-shaped inverted beam 2, the position of the jack 12 is changed so that the jack 12 is in a lower position in the tilted state. On the lower side, the jack 12 is used to lift up again to provide an upward reaction force, and one side of the well-shaped inverted beam 2 is lifted to correct the deviation of the transmission tower again by adjusting the inclination of the well-shaped inverted beam 2. During the jacking process In the middle, adjust upward and lock the jack nut 6 on the lower side, and use the jack nut 6 to position and support the lower end surface of the well-shaped inverted beam 2, and at the same time, adjust downward and lock the position higher side of the anchor nut 10, and the upper end of the connecting beam 3 is pressed down and anchored through the washer 11, so as to utilize the mutual interaction between the jack nut 6 on the lower side and the anchor nut 10 on the higher side. The function is to quickly and effectively rectify and reinforce the transmission tower until the transmission tower reaches a horizontal state.

Preferably, in step 3, the connecting piece is composed of a pre-embedded screw 8 embedded in the foundation inverted beam 4 and a flange 7 fixedly connected to the upper end of the pre-embedded screw 8 .

The preferred operation is that in Step 3, the embedded screw 8 is coaxially arranged with the jacking screw 5 .

In order to realize effective position locking of the well-shaped inverted beam, in step 4, after the power transmission tower reaches a horizontal state, a locking nut 15 is installed on the top of each jacking screw rod 5 through threads, and the locking nut 15 is tightened and locked. The nut 15 abuts against the upper end surface of the square-shaped inverted beam 2 .

In order to achieve a stable and reliable connection, and at the same time, it can also be easily disassembled and maintained. Positioning through holes 17, the nut of the embedded screw 8 is provided with a plurality of positioning blind holes 18 corresponding to the plurality of positioning through holes 17, and the flange 7 and the embedded screw 8 pass through the positioning through holes and the positioning blinds. The connecting bolts in the holes 18 are fixedly connected.

The method in the invention has simple operation, convenient construction process, low economic cost and strong practicability. This method can also reinforce the foundation structure without destroying the original foundation structure while correcting the deviation, and there is no impact correction load or small impact during the construction process. The deviation correction adjustment process is safer and more reliable. At the same time, the safety and stability of the original transmission tower can be improved.

Claims (4)

1. The utility model provides a deviation correcting method of power transmission tower differential settlement, includes the power transmission tower that has four independent foundations of iron tower (1), and four independent foundations of iron tower (1) distribute in the four corners department of mouth font, its characterized in that still includes following step:

step one: reinforcing an independent foundation (1) of the iron tower;

firstly, installing a groined inverted beam (2) above four independent iron tower foundations (1), enabling four intersection points of the groined inverted beam (2) to be correspondingly and fixedly connected to the upper ends of the four independent iron tower foundations (1), and connecting the four independent iron tower foundations (1) into an open whole; four connecting beams (3) are respectively adopted to fixedly connect the four opening ends of the inverted-shaped inverted-beam (2) to form a closed whole;

step two: a jacking pore canal (13) and an anchoring pore canal (14) are formed;

each end part of four opening ends of the inverted-shaped beam (2) is provided with a longitudinally-through jacking pore canal (13), and both end parts of each connecting beam (3) in the length direction are provided with longitudinally-through anchoring pore canals (14);

step three: installing a jacking screw rod (5) and an anchor rod (9);

a jacking screw rod (5) is inserted into each jacking pore canal (13), the upper end of the jacking screw rod (5) extends to the upper part of the upper end face of the inverted-Y-shaped inverted beam (2), and the lower end of the jacking screw rod (5) extends to the upper end of the foundation inverted beam (4) and is fixedly connected with a connecting piece pre-buried in the foundation inverted beam (4); meanwhile, a jacking nut (6) is arranged at the lower part of the jacking screw rod (5) in a threaded fit manner, and the upper end of the jacking nut (6) is abutted against the lower end face of the inverted-Y-shaped beam (2);

an anchor rod (9) is inserted into each anchoring hole channel (14), the upper end of the anchor rod (9) extends to the upper part of the upper end face of the connecting beam (3), and the lower end of the anchor rod (9) extends to the inside of the foundation inverted beam (4) and is anchored in the foundation inverted beam (4); meanwhile, a gasket (11) and an anchor rod nut (10) are respectively sleeved on the upper part of the anchor rod (9), and the gasket (11) is abutted against the upper end face of the connecting beam (3) through the action of the anchor rod nut (10);

step four: placing a jack (12) and performing leveling operation;

a jack (12) is supported at a part between the end part of the inverted-shaped inverted-beam (2) and the foundation inverted-beam (4), the jack (12) is positioned at one side with a lower position in an inclined state, the jack (12) is utilized to lift to provide upward acting counter force, one side of the inverted-shaped inverted-beam (2) is lifted, and the inclination of the inverted-shaped inverted-beam (2) is adjusted to correct the deviation of the power transmission tower; in the lifting process of the jack (12), the lifting nut (6) at the lower side is upwards adjusted and locked, the lifting nut (6) is utilized to carry out high-positioning support on the lower end face of the inverted-well beam (2), meanwhile, the anchor rod nut (10) at the higher side is downwards adjusted and locked, the upper end face of the connecting beam (3) is downwards pressed and anchored through the gasket (11), if the power transmission iron tower cannot reach a horizontal state at one time in the lifting process, the position of the jack (12) is changed according to the inclined state of the inverted-well beam (2), the jack (12) is positioned at the lower side in the inclined state, the jack (12) is again utilized to lift to provide upward action counter force, one side of the inverted-well beam (2) is lifted, the inclination of the inverted-well beam (2) is adjusted to carry out rectification again on the power transmission iron tower, the lifting nut (6) at the lower side is upwards adjusted and locked through the gasket (11), the lower end face of the inverted-well beam (2) is downwards adjusted and anchored according to the inclined state of the inverted-well beam (2), the anchor rod nut (10) is simultaneously, the upper side of the inverted-well beam (2) is mutually pressed and anchored at the higher side through the upper end face of the lifting nut (10), until the power transmission tower reaches a horizontal state; after the power transmission tower reaches a horizontal state, a lock nut (15) is installed on the upper part of each jacking screw rod (5) through threaded fit, and the lock nut (15) is screwed and abutted against the upper end face of the inverted-Y-shaped inverted beam (2).

2. The method for correcting differential settlement of power transmission towers according to claim 1, wherein in the third step, the connecting piece consists of an embedded screw (8) embedded in a foundation inverted beam (4) and a flange (7) fixedly connected to the upper end of the embedded screw (8).

3. The method for correcting differential settlement of power transmission towers according to claim 2, wherein in the third step, the embedded screw (8) is coaxially arranged with the jacking screw (5).

4. The correction method for the differential settlement of the power transmission tower according to claim 3, wherein the flange (7) is annular, a mounting hole (16) matched with the jacking screw (5) is formed in the center of the flange, a plurality of positioning through holes (17) are formed in the mounting hole (16) in a surrounding mode, a plurality of positioning blind holes (18) are formed in nuts of the embedded screw (8) corresponding to the positioning through holes (17), and the flange (7) and the embedded screw (8) are fixedly connected through connecting bolts penetrating through the positioning through holes and the positioning blind holes (18).

Images