CN113931241A - Deviation rectifying structure and method for uneven settlement of power transmission iron tower - Google Patents
Deviation rectifying structure and method for uneven settlement of power transmission iron tower Download PDFInfo
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- CN113931241A CN113931241A CN202111461769.XA CN202111461769A CN113931241A CN 113931241 A CN113931241 A CN 113931241A CN 202111461769 A CN202111461769 A CN 202111461769A CN 113931241 A CN113931241 A CN 113931241A
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Abstract
A deviation rectifying structure and method for uneven settlement of a power transmission iron tower are disclosed, and the structure comprises the following steps: the cross inverted beam is fixedly connected between the upper ends of the four iron tower independent foundations; the four rear additional beams are respectively and fixedly connected between the four opening ends of the cross-shaped inverted beam; the reinforced concrete slab is arranged below the bottom elevation of the iron tower independent foundation, and a steel plate is laid on the upper portion of the reinforced concrete slab; the jacking mechanism is arranged between the rear additional beam on the side with relatively large sinking amount and the steel plate and consists of a bearing frame, a rolling shaft fixing support, a rolling shaft, a hydraulic cylinder and a base plate; the rolling shaft is connected to the lower part of the bearing frame through a rolling shaft fixing support; the two hydraulic cylinders are fixedly connected to the bearing frame and fixedly connected with the cross support through the cross beam; the backing plate is arranged between the piston rod ends of the two hydraulic cylinders and the rear beam. The method comprises the following steps: reinforcing the independent foundation of the iron tower; pouring a reinforced concrete slab and laying a steel plate; arranging a jacking mechanism; and adjusting the hydraulic cylinder and carrying out leveling operation. The structure method can conveniently and quickly realize the correction operation of the transmission tower.
Description
Technical Field
The invention belongs to the technical field of deviation correction of transmission towers, and particularly relates to a deviation correction structure and method for uneven settlement of a transmission tower.
Background
With the deep mining of coal resources in various regions, a large number of coal mining subsidence areas are formed in various regions. Meanwhile, with the increasing of newly-built transmission lines, the location of some transmission towers is inevitably located in a coal mining subsidence area. In the long-term use process, the condition that some power transmission towers are subjected to uneven settlement inevitably occurs, the uneven settlement of the ground surface brings great threat to the stability of the power transmission towers, once the power transmission towers are subjected to the uneven settlement of the ground surface, the uneven settlement mainly shows that the tower body moves obliquely, the tower body deforms and is unstable, the safety distance between the power transmission lines and the ground is shortened, serious even major safety accidents such as overturning, tower falling, line breaking and the like can be caused, great potential safety hazards are realized, and the normal supply of electric power is directly influenced.
In the prior art, common methods for treating uneven settlement of a power transmission iron tower comprise methods such as foundation displacement, hydraulic cylinder jacking and righting, and the like. Therefore, a deviation correcting method which is simple to operate, fast in deviation correcting speed, short in construction period and good in effect is urgently needed to be researched.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a deviation rectifying structure and a method for uneven settlement of a power transmission iron tower, wherein the structure can integrally reinforce the power transmission iron tower to be rectified, can ensure the safe and reliable operation of the deviation rectifying, is favorable for ensuring that the whole power transmission iron tower is not damaged in the deviation rectifying process, and is favorable for quickly and safely realizing the correction operation of the power transmission iron tower; the method can realize convenient and rapid correction operation on the uneven settlement transmission tower, and meanwhile, the method has the advantages of simple construction, short construction period, quick effect, ideal correction effect, high reliability and low correction cost.
In order to achieve the purpose, the invention provides a deviation rectifying structure for uneven settlement of a power transmission iron tower, which comprises the power transmission iron tower with four iron tower independent bases, wherein the four iron tower independent bases are distributed at four corners of a square; the steel plate jacking system also comprises a cross-shaped inverted beam, a rear additional beam, a reinforced concrete plate, a steel plate and a jacking mechanism;
the cross-shaped inverted beam is arranged between the upper ends of the four iron tower independent foundations, and the four end parts of the cross-shaped inverted beam are respectively and correspondingly fixedly connected to the upper ends of the four iron tower independent foundations;
the rear additional beams are four in number and are respectively arranged between four open ends of the cross-shaped inverted beam, and two ends of each rear additional beam are respectively fixedly connected with the end parts of two adjacent open ends in the cross-shaped inverted beam and are also fixedly connected with two adjacent iron tower independent foundations;
the reinforced concrete slabs are arranged below the bottom elevations of the iron tower independent foundations, the centers of the reinforced concrete slabs are positioned at the centers of the four iron tower independent foundations, and four support arms of the reinforced concrete slabs extend to the outside of the power transmission iron tower between two adjacent iron tower independent foundations respectively;
the size of the steel plate is matched with that of the reinforced concrete plate, and the steel plate is laid on the upper part of the reinforced concrete plate;
the jacking mechanism is arranged between the rear additional beam on the side with relatively large sinking amount and the steel plate and consists of a bearing frame, a plurality of pairs of roller fixing supports, a plurality of rollers, two hydraulic cylinders and a base plate; a plurality of pairs of roller fixing supports are uniformly arranged below the bearing frame along the left-right direction, each pair of roller fixing supports are symmetrically arranged in the front-back direction, and the upper ends of the roller fixing supports are fixedly connected with the lower end of the bearing frame; the rolling shafts are arranged in one-to-one correspondence with the rolling shaft fixing supports, and each rolling shaft is rotatably connected between the lower parts of the corresponding rolling shaft fixing supports and is matched with the steel plate in a rolling way; the left part and the right part of the upper end surface of the bearing frame are fixedly connected with the left hydraulic cylinder and the right hydraulic cylinder at intervals, the bases of the two hydraulic cylinder barrels are fixedly connected with the bearing frame, the upper ends of the two hydraulic cylinder barrels are fixedly sleeved with hoops, the upper part and the lower part between the two hydraulic cylinders are sequentially provided with a cross beam and a cross support, and two ends of the cross beam are respectively fixedly connected with the two hoops; the cross support is X-shaped, two ends of one side of the cross support are fixedly connected with the upper end and the lower end of one hydraulic cylinder barrel, and two ends of the other side of the cross support are fixedly connected with the upper end and the lower end of the other hydraulic cylinder barrel; the backing plate is arranged between the piston rod ends of the two hydraulic cylinders and the rear additional beam.
Further, in order to prevent the roller separated by the roller fixing support from rolling off the bearing frame, the left end and the right end of the lower end face of the bearing frame are respectively fixedly connected with a limiting baffle, the length of the limiting baffle in the front-back direction is the same as that of the bearing frame in the front-back direction, and the lower end edge of the limiting baffle extends to a position close to the axle center of the roller.
Further, in order to provide a stable movement supporting capability, the number of the rollers is four.
In the technical scheme, the cross-shaped inverted beam is fixedly connected between the upper ends of the four iron tower independent bases, the rear added beam is fixedly connected between the four opening ends of the cross-shaped inverted beam, and meanwhile, the two ends of the rear added beam are fixedly connected with the two adjacent iron tower independent bases, so that the four iron tower independent bases can be fixedly connected into a whole, and the connection strength of the four iron tower independent bases is further effectively enhanced; on the other hand, the condition that the part of the power transmission iron tower is damaged in the deviation rectifying and jacking process can be avoided. Through the reinforced concrete slab who pours in steel pylons's below, can provide the bottom suspension body for the jacking of rectifying to in support climbing mechanism, simultaneously, support body can be convenient realization rectifying the jacking to steel pylons in the cooperation. Make two pneumatic cylinder fixed connection in the upper end of bearing frame to make the lower part of bearing frame through a plurality of roller bearings of a plurality of pairs of roller bearing fixed bolster connection, enable climbing mechanism to have the removal function, and then can be at the convenient position that changes climbing mechanism of the in-process of rectifying, very big improvement operating efficiency who rectifies. The base plate is arranged between the rear added beam and the piston rod of the hydraulic cylinder, so that the acting area of jacking load can be increased, and further the rear added beam can be prevented from being damaged in the jacking process. Through the upper portion fixed connection crossbeam between two pneumatic cylinders to lower part fixed connection cross bracing between two pneumatic cylinders enables the connection that two pneumatic cylinders can stabilize each other and becomes a whole, and then not only can stably realize the jacking and support function, but also ensures the safety of jacking operation and goes on. Simultaneously, this kind utilizes crossbeam and cross bracing to connect into holistic two pneumatic cylinders, compares in traditional single pneumatic cylinder, can effectively reduce the demand to pneumatic cylinder power and jacking load, is favorable to reducing the cost of jacking operation.
The invention also provides a deviation rectifying method for the uneven settlement of the power transmission iron tower, which comprises the power transmission iron tower with four iron tower independent bases, wherein the four iron tower independent bases are distributed at four corners of the square; the method comprises the following steps:
the method comprises the following steps: reinforcing the independent foundation of the iron tower;
firstly, arranging a cross-shaped inverted beam between the upper ends of the four iron tower independent foundations, correspondingly and fixedly connecting the four end parts of the cross-shaped inverted beam to the upper ends of the four iron tower independent foundations, and connecting the four iron tower independent foundations into an open whole by using the cross-shaped inverted beam; then four rear additional beams are respectively adopted between the four opening ends of the cross-shaped inverted beam for fixed connection to form a closed whole;
step two: pouring a reinforced concrete slab and laying a steel plate;
firstly, pouring a cross-shaped reinforced concrete slab below the bottom elevation of the iron tower independent foundation, and enabling the center of the reinforced concrete slab to be positioned at the centers of the four iron tower independent foundations, so that four support arms of the reinforced concrete slab respectively extend to the outside of a power transmission iron tower between two adjacent iron tower independent foundations; then laying a steel plate on the reinforced concrete slab;
step three: arranging a jacking mechanism;
s10: a bearing frame is arranged between the rear additional beam and the steel plate on the side with relatively large sinking amount, a plurality of pairs of rolling shaft fixing supports which are symmetrically distributed front and back are fixedly connected to the lower end of the bearing frame along the left-right direction, and rolling shafts are rotatably connected between the lower parts of each pair of rolling shaft fixing supports;
s11: respectively arranging hydraulic cylinders which are vertically arranged at the left part and the right part of the upper end surface of a bearing frame, and fixedly connecting bases of the two hydraulic cylinders with the bearing frame; sleeving cuffs at the upper ends of the two hydraulic cylinder barrels in a fixed manner, and fixedly connecting the two cuffs through a cross beam; then, an X-shaped cross support is arranged between the two hydraulic cylinders, and two ends of one side of the cross support are fixedly connected with the upper end and the lower end of a cylinder barrel of one hydraulic cylinder, and two ends of the other side of the cross support are fixedly connected with the upper end and the lower end of a cylinder barrel of the other hydraulic cylinder;
s12: synchronously controlling piston rods of the two hydraulic cylinders to extend upwards and to be close to the rear additional beam above the piston rods, and paving a base plate between the piston rods of the hydraulic cylinders and the rear additional beam;
step four: adjusting the hydraulic cylinder and carrying out leveling operation;
s20: moving the bearing frame to enable the two hydraulic cylinders to move to the side with the lower inclination state of the current rear additional beam, synchronously controlling piston rods of the two hydraulic cylinders to lift upwards to provide an upward acting counterforce, and lifting the side with the lower inclination state of the current rear additional beam until the front additional beam and the rear additional beam reach the horizontal state;
s21: heightening and supporting the concrete poured under the independent foundations of all the lifted iron towers to stabilize the horizontal state of the current rear additional beam;
s22: after the heightened and supported part is stabilized, piston rods of the two hydraulic cylinders are synchronously controlled to retract so as to be separated from a supporting state; moving the movable bearing frame to the central part of the current rear beam in the length direction; then synchronously controlling piston rods of the two hydraulic cylinders to lift upwards to provide an upward acting counterforce, lifting the current rear additional beam upwards, and adjusting the deviation rectification of the power transmission iron tower by adjusting the inclination of the rear additional beam until the power transmission iron tower reaches a horizontal state;
s23: when the deviation correction reaches the integral level, concrete is poured under the independent foundations of all the lifted iron towers for heightening and supporting so as to stabilize the horizontal state of the power transmission iron towers.
Further, in order to prevent the roller separated from the roller fixing bracket from falling off the carrier, in step three, in S2, two limit baffles are symmetrically and fixedly connected to the lower portions of the two ends of the carrier in the longitudinal direction.
Further, in order to enhance the overall connection strength of the four independent foundations, in the step one, the two ends of the rear additional beam are fixedly connected with the two adjacent iron tower independent foundations simultaneously.
According to the invention, before the deviation rectifying operation, the four iron tower independent foundations are connected in a closed manner by using the cross inverted beam and the rear additional beam, so that the foundation structure can be reinforced without damaging the original foundation structure, and the service life of the whole transmission iron tower is prolonged. The lower part of the power transmission iron tower is poured with a reinforced concrete slab, and a steel plate is laid on the reinforced concrete slab, so that a supporting point of counter force can be provided. The method has no impact on the transmission tower in the construction process of the cross support, the post beam and the reinforced concrete slab, and simultaneously can realize the reinforcing operation on the transmission tower in the process of the deviation rectifying operation. The lower part of the bearing frame is provided with a plurality of rolling shafts, so that the jacking mechanism has integral moving capability; the two hydraulic cylinders on the bearing frame are fixedly connected with each other through the cross beam and the cross support, so that the two hydraulic cylinders can be stably and reliably connected into a whole; the base plate is arranged between the rear added beam and the piston rod of the hydraulic cylinder, so that the acting area of jacking load can be increased, further, the rear added beam can be prevented from being damaged in the jacking process, meanwhile, the impact of the jacking process on the reinforced rear power transmission iron tower is favorably reduced, and the overall safety of the power transmission iron tower is further protected. The jacking mechanism acts on one side with relatively large sinking amount, and can quickly finish the deviation rectifying process. The jacking mechanism jacks the side with larger sinking amount first and then jacks the side with lower inclined state of the additional beam, and the additional beam on the side with larger sinking amount can be jacked to the horizontal state first, so that the correction jacking operation of the next stage is continued after the additional support is carried out below the lifted independent foundation, and the correction process is favorably and stably realized. After the rear additional beam on the side with larger sinking amount is jacked to the horizontal state, the jacking mechanism is moved to the middle part of the current rear additional beam, and the later-stage deviation rectifying process of the power transmission iron tower can be quickly and stably realized. The method has the advantages of simple operation steps, good flexibility, convenient construction process, low economic cost and strong practicability, ensures the efficient operation of the deviation rectifying operation of the transmission tower, can ensure the safe and stable operation of the transmission tower after the deviation rectifying, and has wide practicability.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a side view of fig. 1.
In the figure: 1. the steel tower independent foundation comprises an iron tower independent foundation body, 2 parts of a cross-shaped inverted beam, 3 parts of a rear additional beam, 4 parts of a reinforced concrete slab, 5 parts of a hydraulic cylinder, 6 parts of a steel plate, 7 parts of a limiting baffle, 8 parts of a roller fixing support, 9 parts of a roller, 10 parts of a bearing frame, 11 parts of a hoop, 12 parts of a cross support, 13 parts of a base plate, 14 parts of a cross beam.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 and 2, the invention provides a deviation rectifying structure for uneven settlement of a power transmission iron tower, which comprises the power transmission iron tower with four iron tower independent foundations 1, wherein the four iron tower independent foundations 1 are distributed at four corners of a square; the steel plate lifting device also comprises a cross-shaped inverted beam 2, a rear additional beam 3, a reinforced concrete plate 4, a steel plate 6 and a lifting mechanism;
the cross-shaped inverted beam 2 is arranged between the upper ends of the four iron tower independent foundations 1, and the four end parts of the cross-shaped inverted beam are respectively and correspondingly fixedly connected to the upper ends of the four iron tower independent foundations 1;
the number of the rear additional beams 3 is four, the rear additional beams are respectively arranged between four opening ends of the cross-shaped inverted beam 2, and two ends of each rear additional beam 3 are respectively fixedly connected with the end parts of two adjacent opening ends in the cross-shaped inverted beam 2 and are also fixedly connected with two adjacent iron tower independent foundations 1;
the reinforced concrete slabs 4 are arranged below the bottom elevation of the iron tower independent foundations 1, the centers of the reinforced concrete slabs are located at the centers of the four iron tower independent foundations 1, and four support arms of the reinforced concrete slabs extend to the outside of the power transmission iron tower between two adjacent iron tower independent foundations 1 respectively;
the size of the steel plate 6 is matched with that of the reinforced concrete plate 4, and the steel plate is laid on the upper part of the reinforced concrete plate 4;
the jacking mechanism is arranged between the rear additional beam 3 on the side with relatively large sinking amount and the steel plate 6 and consists of a bearing frame 10, a plurality of pairs of roller fixing supports 8, a plurality of rollers 9, two hydraulic cylinders 5 and a base plate 13; a plurality of pairs of roller fixing supports 8 are uniformly arranged below the bearing frame 10 along the left-right direction, each pair of roller fixing supports 8 are symmetrically arranged in front and back, and the upper ends of the roller fixing supports are fixedly connected with the lower end of the bearing frame 10; the plurality of rollers 9 are arranged in one-to-one correspondence with the plurality of pairs of roller fixing brackets 8, and each roller 9 is rotatably connected between the lower parts of the corresponding pair of roller fixing brackets 8 and is in rolling fit with the steel plate 6; the two hydraulic cylinders 5 are fixedly connected to the left part and the right part of the upper end face of the bearing frame 10 at intervals left and right, bases of cylinder barrels of the two hydraulic cylinders 5 are fixedly connected with the bearing frame 10, cuffs 11 are fixedly sleeved at the upper ends of the cylinder barrels of the two hydraulic cylinders 5, a cross beam 14 and a cross support 12 are sequentially arranged at the upper part and the lower part between the two hydraulic cylinders 5, and two ends of the cross beam 14 are fixedly connected with the two cuffs 11 respectively; the cross support 12 is X-shaped, two ends of one side of the cross support are fixedly connected with the upper end and the lower end of a cylinder barrel of one hydraulic cylinder 5, and two ends of the other side of the cross support are fixedly connected with the upper end and the lower end of a cylinder barrel of the other hydraulic cylinder 5; the shim plate 13 is arranged between the rod ends of the two hydraulic cylinders 5 and the rear boom 3.
In order to avoid that the roller separated from the roller fixing support falls off the bearing frame, the left end and the right end of the lower end surface of the bearing frame 10 are respectively fixedly connected with a limiting baffle 7, the length of the limiting baffle 7 in the front-back direction is the same as that of the bearing frame 10 in the front-back direction, and the lower end edge of the limiting baffle extends to a position close to the axis of the roller 9.
In order to provide a stable movement supporting capability, the number of the rollers 9 is four.
The cross-shaped inverted beam is fixedly connected between the upper ends of the four iron tower independent foundations, the rear added beam is fixedly connected between the four open ends of the cross-shaped inverted beam, and meanwhile, the two ends of the rear added beam are fixedly connected with the two adjacent iron tower independent foundations, so that the four iron tower independent foundations can be fixedly connected into a whole, the connection strength of the four iron tower independent foundations is effectively enhanced, and therefore on one hand, the rear added beam can be used for reacting force, and an upper supporting body can be provided for deviation rectification of a power transmission iron tower; on the other hand, the condition that the part of the power transmission iron tower is damaged in the deviation rectifying and jacking process can be avoided. Through the reinforced concrete slab who pours in steel pylons's below, can provide the bottom suspension body for the jacking of rectifying to in support climbing mechanism, simultaneously, support body can be convenient realization rectifying the jacking to steel pylons in the cooperation. Make two pneumatic cylinder fixed connection in the upper end of bearing frame to make the lower part of bearing frame through a plurality of roller bearings of a plurality of pairs of roller bearing fixed bolster connection, enable climbing mechanism to have the removal function, and then can be at the convenient position that changes climbing mechanism of the in-process of rectifying, very big improvement operating efficiency who rectifies. The base plate is arranged between the rear added beam and the piston rod of the hydraulic cylinder, so that the acting area of jacking load can be increased, and further the rear added beam can be prevented from being damaged in the jacking process. Through the upper portion fixed connection crossbeam between two pneumatic cylinders to lower part fixed connection cross bracing between two pneumatic cylinders enables the connection that two pneumatic cylinders can stabilize each other and becomes a whole, and then not only can stably realize the jacking and support function, but also ensures the safety of jacking operation and goes on. Simultaneously, this kind utilizes crossbeam and cross bracing to connect into holistic two pneumatic cylinders, compares in traditional single pneumatic cylinder, can effectively reduce the demand to pneumatic cylinder power and jacking load, is favorable to reducing the cost of jacking operation.
The invention also provides a deviation rectifying method for the uneven settlement of the power transmission iron tower, which comprises the power transmission iron tower with four iron tower independent foundations 1, wherein the four iron tower independent foundations 1 are distributed at four corners of a square; the method comprises the following steps:
the method comprises the following steps: reinforcing an iron tower independent foundation 1;
excavating foundation soil;
firstly, arranging a cross-shaped inverted beam 2 between the upper ends of four iron tower independent foundations 1, correspondingly and fixedly connecting the four end parts of the cross-shaped inverted beam 2 to the upper ends of the four iron tower independent foundations 1, and connecting the four iron tower independent foundations 1 into an open whole by using the cross-shaped inverted beam 2; four rear additional beams 3 are respectively adopted between the four opening ends of the cross-shaped inverted beam 2 for fixed connection to form a closed whole;
step two: pouring a reinforced concrete slab 4 and laying a steel plate 6;
firstly, pouring a cross-shaped reinforced concrete slab 4 below the bottom elevation of the iron tower independent foundation 1, and enabling the center of the reinforced concrete slab 4 to be positioned at the centers of the four iron tower independent foundations 1, so that four support arms of the reinforced concrete slab respectively extend to the outside of a power transmission iron tower between two adjacent iron tower independent foundations 1; then laying a steel plate 6 on the reinforced concrete plate 4;
step three: arranging a jacking mechanism;
s10: a bearing frame 10 is arranged between the rear additional beam 3 and the steel plate 6 on the side with relatively large sinking, a plurality of pairs of roller fixing supports 8 which are symmetrically distributed front and back are fixedly connected to the lower end of the bearing frame 10 along the left-right direction, and a roller 9 is rotatably connected between the lower parts of each pair of roller fixing supports 8;
s11: firstly, respectively arranging hydraulic cylinders 5 which are vertically arranged at the left part and the right part of the upper end surface of a carrier frame 10, and fixedly connecting bases of the two hydraulic cylinders 5 with the carrier frame 10; the upper ends of the cylinder barrels of the two hydraulic cylinders 5 are fixedly sleeved with the hoops 11, and the two hoops 11 are fixedly connected through the cross beam 14; then, an X-shaped cross support 12 is arranged between the two hydraulic cylinders 5, and two ends of one side of the cross support 12 are fixedly connected with the upper end and the lower end of a cylinder barrel of one hydraulic cylinder 5, and two ends of the other side of the cross support 12 are fixedly connected with the upper end and the lower end of a cylinder barrel of the other hydraulic cylinder 5;
s12: synchronously controlling the piston rods of the two hydraulic cylinders 5 to extend upwards and to be close to the rear additional beam 3 above the piston rods, and paving a base plate 13 between the piston rods of the hydraulic cylinders 5 and the rear additional beam 3;
step four: adjusting the hydraulic cylinder 5 and carrying out leveling operation;
s20: moving the bearing frame 10 to enable the two hydraulic cylinders 5 to move to the side with the lower inclination state of the current rear additional beam 3, synchronously controlling the piston rods of the two hydraulic cylinders 5 to lift upwards to provide an upward acting counter force, and lifting the side with the lower inclination state of the current rear additional beam 3 until the front additional beam 3 and the rear additional beam 3 reach the horizontal state;
s21: heightening and supporting concrete poured under all the lifted iron tower independent foundations 1 to stabilize the horizontal state of the current rear additional beam 3;
s22: after the heightened and supported part is stabilized, piston rods of the two hydraulic cylinders 5 are synchronously controlled to retract so as to be separated from the supporting state; then the movable bearing frame 10 is moved to enable the two hydraulic cylinders 5 to move to the central part of the current rear additional beam 3 in the length direction; then, synchronously controlling piston rods of the two hydraulic cylinders 5 to lift upwards to provide an upward acting counterforce, lifting the current rear additional beam 3 upwards, and adjusting the deviation of the power transmission iron tower by adjusting the inclination of the rear additional beam 3 until the power transmission iron tower reaches a horizontal state;
s23: when the deviation correction reaches the integral level, concrete is poured under all the lifted iron tower independent foundations 1 for heightening and supporting so as to stabilize the horizontal state of the power transmission iron tower. And then controlling the piston rods of the two hydraulic cylinders 5 to retract, removing the jacking mechanism, drawing out the steel plate 6 and the backing plate 13, and backfilling foundation soil.
In order to prevent the roller separated from the roller fixing bracket from falling off the carrier, in step three, in S2, two limit baffles 7 are symmetrically and fixedly connected to the lower portions of the two ends of the carrier 10 in the longitudinal direction.
In order to strengthen the overall connection strength of the four independent foundations, in the step one, the two ends of the rear additional beam 3 are fixedly connected with the two adjacent iron tower independent foundations 1 at the same time.
According to the invention, before the deviation rectifying operation, the four iron tower independent foundations are connected in a closed manner by using the cross inverted beam and the rear additional beam, so that the foundation structure can be reinforced without damaging the original foundation structure, and the service life of the whole transmission iron tower is prolonged. The lower part of the power transmission iron tower is poured with a reinforced concrete slab, and a steel plate is laid on the reinforced concrete slab, so that a supporting point of counter force can be provided. The method has no impact on the transmission tower in the construction process of the cross support, the post beam and the reinforced concrete slab, and simultaneously can realize the reinforcing operation on the transmission tower in the process of the deviation rectifying operation. The lower part of the bearing frame is provided with a plurality of rolling shafts, so that the jacking mechanism has integral moving capability; the two hydraulic cylinders on the bearing frame are fixedly connected with each other through the cross beam and the cross support, so that the two hydraulic cylinders can be stably and reliably connected into a whole; the base plate is arranged between the rear added beam and the piston rod of the hydraulic cylinder, so that the acting area of jacking load can be increased, further, the rear added beam can be prevented from being damaged in the jacking process, meanwhile, the impact of the jacking process on the reinforced rear power transmission iron tower is favorably reduced, and the overall safety of the power transmission iron tower is further protected. The jacking mechanism acts on one side with relatively large sinking amount, and can quickly finish the deviation rectifying process. The jacking mechanism jacks the side with larger sinking amount first and then jacks the side with lower inclined state of the additional beam, and the additional beam on the side with larger sinking amount can be jacked to the horizontal state first, so that the correction jacking operation of the next stage is continued after the additional support is carried out below the lifted independent foundation, and the correction process is favorably and stably realized. After the rear additional beam on the side with larger sinking amount is jacked to the horizontal state, the jacking mechanism is moved to the middle part of the current rear additional beam, and the later-stage deviation rectifying process of the power transmission iron tower can be quickly and stably realized. The method has the advantages of simple operation steps, good flexibility, convenient construction process, low economic cost and strong practicability, ensures the efficient operation of the deviation rectifying operation of the transmission tower, can ensure the safe and stable operation of the transmission tower after the deviation rectifying, and has wide practicability.
Claims (6)
1. A deviation rectifying structure for uneven settlement of a power transmission iron tower comprises the power transmission iron tower with four iron tower independent foundations (1), wherein the four iron tower independent foundations (1) are distributed at four corners of a square; the reinforced concrete structure is characterized by further comprising a cross-shaped inverted beam (2), a rear additional beam (3), a reinforced concrete plate (4), a steel plate (6) and a jacking mechanism;
the cross-shaped inverted beam (2) is arranged between the upper ends of the four iron tower independent foundations (1), and the four end parts of the cross-shaped inverted beam are respectively and correspondingly fixedly connected to the upper ends of the four iron tower independent foundations (1);
the rear additional beams (3) are four in number and are respectively arranged between four open ends of the cross-shaped inverted beam (2), and two ends of each rear additional beam (3) are respectively fixedly connected with the end parts of two adjacent open ends in the cross-shaped inverted beam (2) and are also fixedly connected with two adjacent iron tower independent foundations (1);
the reinforced concrete slabs (4) are arranged below the bottom elevations of the iron tower independent foundations (1), the centers of the reinforced concrete slabs are positioned at the centers of the four iron tower independent foundations (1), and four support arms of the reinforced concrete slabs extend to the outside of the power transmission iron tower between two adjacent iron tower independent foundations (1) respectively;
the steel plate (6) is matched with the reinforced concrete plate (4) in size and is paved on the upper part of the reinforced concrete plate (4);
the jacking mechanism is arranged between the rear additional beam (3) on the side with relatively large sinking amount and the steel plate (6), and consists of a bearing frame (10), a plurality of pairs of roller fixing supports (8), a plurality of rollers (9), two hydraulic cylinders (5) and a base plate (13); a plurality of pairs of roller fixing supports (8) are uniformly arranged below the bearing frame (10) along the left-right direction, each pair of roller fixing supports (8) are symmetrically arranged in the front-back direction, and the upper ends of the roller fixing supports are fixedly connected with the lower end of the bearing frame (10); the plurality of rolling shafts (9) are arranged in one-to-one correspondence with the plurality of pairs of rolling shaft fixing supports (8), and each rolling shaft (9) is rotatably connected between the lower parts of the corresponding pair of rolling shaft fixing supports (8) and is matched with the steel plate (6) in a rolling way; the two hydraulic cylinders (5) are fixedly connected to the left part and the right part of the upper end face of the bearing frame (10) at intervals left and right, bases of cylinder barrels of the two hydraulic cylinders (5) are fixedly connected with the bearing frame (10), cuffs (11) are fixedly sleeved at the upper ends of the cylinder barrels of the two hydraulic cylinders (5), a cross beam (14) and cross supports (12) are sequentially arranged at the upper part and the lower part between the two hydraulic cylinders (5), and two ends of the cross beam (14) are fixedly connected with the two cuffs (11) respectively; the cross support (12) is X-shaped, two ends of one side of the cross support are fixedly connected with the upper end and the lower end of a cylinder barrel of one hydraulic cylinder (5), and two ends of the other side of the cross support are fixedly connected with the upper end and the lower end of a cylinder barrel of the other hydraulic cylinder (5); the backing plate (13) is arranged between the piston rod ends of the two hydraulic cylinders (5) and the rear additional beam (3).
2. The structure of rectifying deviation of uneven settlement of power transmission tower according to claim 1, characterized in that a limit baffle (7) is fixedly connected to each of the left end and the right end of the lower end surface of the carrier (10), the length of the limit baffle (7) in the front-back direction is the same as the length of the carrier (10) in the front-back direction, and the lower end of the limit baffle extends to a position close to the axis of the roller (9).
3. The structure for rectifying uneven settlement of a power transmission tower according to claim 1 or 2, wherein the number of the rollers (9) is four.
4. A deviation rectifying method for uneven settlement of a power transmission iron tower comprises the power transmission iron tower with four iron tower independent foundations (1), wherein the four iron tower independent foundations (1) are distributed at four corners of a square;
the method is characterized by comprising the following steps:
the method comprises the following steps: reinforcing an independent iron tower foundation (1);
firstly, arranging a cross-shaped inverted beam (2) between the upper ends of four iron tower independent foundations (1), correspondingly and fixedly connecting the four end parts of the cross-shaped inverted beam (2) to the upper ends of the four iron tower independent foundations (1), and connecting the four iron tower independent foundations (1) into an open whole by using the cross-shaped inverted beam (2); four rear additional beams (3) are respectively adopted to be fixedly connected among the four opening ends of the cross-shaped inverted beam (2) to form a closed whole;
step two: pouring a reinforced concrete slab (4) and paving a steel plate (6);
firstly, pouring a cross-shaped reinforced concrete slab (4) below the bottom elevation of the iron tower independent foundation (1), and enabling the center of the reinforced concrete slab (4) to be positioned at the centers of the four iron tower independent foundations (1) so that four support arms of the reinforced concrete slab respectively extend to the outside of a power transmission iron tower between two adjacent iron tower independent foundations (1); then laying a steel plate (6) on the reinforced concrete plate (4);
step three: arranging a jacking mechanism;
s10: a bearing frame (10) is arranged between a rear additional beam (3) on the side with relatively large sinking and a steel plate (6), a plurality of pairs of roller fixing supports (8) which are symmetrically distributed front and back are fixedly connected to the lower end of the bearing frame (10) along the left-right direction, and rollers (9) are rotatably connected between the lower parts of each pair of roller fixing supports (8);
s11: the hydraulic cylinders (5) which are vertically arranged are respectively arranged at the left part and the right part of the upper end surface of the bearing frame (10), and the bases of the two hydraulic cylinders (5) are fixedly connected with the bearing frame (10); a hoop (11) is fixedly sleeved at the upper ends of the cylinder barrels of the two hydraulic cylinders (5), and the two hoops (11) are fixedly connected through a cross beam (14); then, an X-shaped cross support (12) is arranged between the two hydraulic cylinders (5), and two ends of one side of the cross support (12) are fixedly connected with the upper end and the lower end of a cylinder barrel of one hydraulic cylinder (5), and two ends of the other side of the cross support (12) are fixedly connected with the upper end and the lower end of the cylinder barrel of the other hydraulic cylinder (5);
s12: synchronously controlling piston rods of the two hydraulic cylinders (5) to extend upwards and approach to the rear additional beam (3) above the piston rods, and paving a base plate (13) between the piston rods of the hydraulic cylinders (5) and the rear additional beam (3);
step four: adjusting the hydraulic cylinder (5) and carrying out leveling operation;
s20: moving the bearing frame (10) to enable the two hydraulic cylinders (5) to move to the side with the lower inclination state of the current rear additional beam (3), synchronously controlling piston rods of the two hydraulic cylinders (5) to lift upwards to provide an upward action counter force, and lifting the side with the lower inclination state of the current front and rear additional beams (3) until the front and rear additional beams (3) reach the horizontal state;
s21: concrete is poured under all the lifted iron tower independent foundations (1) for heightening and supporting so as to stabilize the horizontal state of the front and rear additional beams (3);
s22: after the heightened and supported part is stabilized, piston rods of the two hydraulic cylinders (5) are synchronously controlled to retract so as to be separated from the supporting state; then the movable bearing frame (10) is moved to enable the two hydraulic cylinders (5) to move to the central part of the current rear additional beam (3) in the length direction; then synchronously controlling piston rods of the two hydraulic cylinders (5) to lift upwards to provide an upward acting counterforce, lifting the front and rear additional beams (3) upwards to correct the deviation of the power transmission iron tower by adjusting the inclination of the rear additional beam (3) until the power transmission iron tower reaches a horizontal state;
s23: when the deviation correction reaches the integral level, concrete is poured under all the lifted iron tower independent foundations (1) for heightening and supporting so as to stabilize the horizontal state of the power transmission iron tower.
5. The method for rectifying the uneven settlement of the power transmission tower according to claim 4, wherein in step three, in step S2, two limit baffles (7) are symmetrically and fixedly connected to the lower parts of the two ends of the carrier (10) in the length direction.
6. The method for rectifying the uneven settlement of the power transmission tower according to claim 5, wherein in the step one, both ends of the rear additional beam (3) are fixedly connected with two adjacent independent foundations (1) of the power transmission tower at the same time.
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