CN115573376A - Treatment method and reinforcement device for circular transmission tower foundation cracking - Google Patents
Treatment method and reinforcement device for circular transmission tower foundation cracking Download PDFInfo
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- CN115573376A CN115573376A CN202210967335.5A CN202210967335A CN115573376A CN 115573376 A CN115573376 A CN 115573376A CN 202210967335 A CN202210967335 A CN 202210967335A CN 115573376 A CN115573376 A CN 115573376A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 159
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000005336 cracking Methods 0.000 title claims abstract description 37
- 230000002787 reinforcement Effects 0.000 title claims abstract description 36
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 35
- 230000001681 protective effect Effects 0.000 claims abstract description 15
- 238000005553 drilling Methods 0.000 claims abstract description 12
- 238000011378 penetrating method Methods 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 24
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- 239000000428 dust Substances 0.000 claims description 7
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- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 4
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Abstract
The invention provides a treatment method and a reinforcement device for circular transmission tower foundation cracking, wherein the treatment method comprises the following steps: drilling holes around the base cracks of the round transmission tower by adopting an oblique crack surface hole penetrating method, and grouting into the drilled holes to fill the cracks; carrying out confining pressure reinforcement on a circular transmission tower foundation by using a reinforcing device; after confining pressure reinforcement is completed, installing a reinforcement cage around the circular transmission tower foundation, and pouring concrete by relying on the reinforcement cage to form a protective shell on the outer side of the circular transmission tower foundation; the connecting gap between the circular transmission tower foundation and the transmission tower foot plate is filled, and the influence of nonuniform local voltage on the circular transmission tower foundation is eliminated. The reinforcing device comprises a hoop component, the hoop component is of an arc-shaped structure, and the two hoop components are spliced and assembled to form confining pressure on the circular transmission tower foundation. The reinforced circular transmission tower foundation is firmer and firmer, repeated cracking of the circular transmission tower foundation is avoided, and reliable operation of the transmission line is guaranteed.
Description
Technical Field
The invention relates to the technical field of transmission tower foundations, in particular to a method for treating cracking of a circular transmission tower foundation and a reinforcing device.
Background
When a power transmission line is built, a concrete foundation is usually needed to be adopted to fix a power transmission tower, the quality of the power transmission tower foundation plays an important role in safe and stable operation of a power line, and if the power transmission tower foundation fails, serious safety accidents are easily caused.
Transmission tower contact divide into circular basis and square basis, wherein circular basis can be divided into and digs hole type basis and bored concrete pile type basis etc. along with the increase of operating duration, the fracture condition takes place for circular transmission tower basis easily, if do not handle the basis of fracture, the fracture further enlarges, will influence transmission tower's structural stability, cause the serious consequence such as shaft tower collapse easily, thereby cause huge economic loss, consequently need in time repair the circular transmission tower basis of fracture, in order to reduce the safety risk.
In engineering, a common repairing method is to wrap a layer of concrete outside the surface of a round transmission tower foundation and reinforce the round transmission tower foundation by using reinforcing steel bars, but the reinforcing method has poor durability and reliability, is difficult to radically solve the cracking problem, can crack repeatedly after being repaired, and wastes manpower and material resources.
Disclosure of Invention
The invention aims to at least solve one of the technical problems that the reliability and durability of the treatment of the circular transmission tower foundation cracking by adopting the existing method are poor, the cracking problem is difficult to solve at the source, repeated cracking is easy to occur, the economy is poor, and the safe and stable operation of a transmission line is influenced in the prior art.
Therefore, the invention provides a method for treating the cracking of the circular transmission tower foundation in a first aspect.
The invention provides a device for reinforcing the circular transmission tower foundation cracking in a second aspect.
The invention provides a method for treating cracking of a circular transmission tower foundation, which comprises the following steps:
s1, drilling holes around the cracks of a circular transmission tower foundation by adopting an oblique crack surface hole penetrating method, and grouting into the drilled holes to fill the cracks;
s2, carrying out confining pressure reinforcement on the circular transmission tower foundation by using a reinforcement device;
s3, after confining pressure reinforcement is completed, installing a reinforcement cage around the circular transmission tower foundation, and pouring concrete by relying on the reinforcement cage to form a protective shell on the outer side of the circular transmission tower foundation;
and S4, filling a connecting gap between the circular transmission tower foundation and a transmission tower foot plate, and eliminating the influence of uneven local voltage on the circular transmission tower foundation.
According to the technical scheme of the invention, the method for treating the circular transmission tower foundation cracking can also have the following additional technical characteristics:
further, S1 comprises the steps of:
s11, selecting at least two point positions around a crack of a circular transmission tower foundation to carry out oblique drilling, wherein the drilling needs to penetrate through the crack surface of the crack;
s12, temporarily plugging the drilled hole by using a grouting nozzle or a plugging plug;
s13, cleaning sundries and dust on the surface of the round transmission tower foundation;
s14, taking off the plugging matter on the drilled hole, and blowing dust in the drilled hole by using high-pressure gas;
and S15, injecting a filler into the drilled hole, and filling the cracks of the base of the round transmission tower.
Further, S2 comprises the steps of:
s21, installing reinforcing devices layer by layer from the top of the circular transmission tower foundation downwards, surrounding the circular transmission tower foundation by the reinforcing devices, and applying confining pressure to the circular transmission tower foundation;
s22, excavating surface soil around the circular transmission tower foundation along the vertical extending direction of the cracks to expose the cracks covered by the surface soil;
s23, when the vertical length of the exposed crack is enough to install the reinforcing device, grouting and filling the newly exposed crack according to the S1, and installing the reinforcing device after filling;
and S24, continuously excavating downwards, and repeating the steps S22 and S23 until the confining pressure reinforcement of the deepest part in the vertical direction of the crack is completed.
Further, in step S23, when the reinforcing device is installed, a pit wall template is installed in synchronization with the position of the excavated earth pit wall facing the reinforcing device.
Further, in the step S24, the vertical confining pressure reinforcement range of the circular transmission tower foundation is from the top of the circular transmission tower foundation to the position of the deepest vertical position of the crack, and then the vertical confining pressure reinforcement range extends downwards by 150-300 mm.
Further, the reinforcement cage in S3 is used as a framework for pouring a concrete protective shell around the round transmission tower foundation.
Further, S4 comprises the steps of:
s41, penetrating a # -shaped steel wire into a connecting gap between a circular transmission tower foundation and a transmission tower foot plate;
s42, supporting a formwork around the connecting position of the tower foot plate and the circular transmission tower foundation to form a grouting space;
s43, injecting grouting materials into the grouting space to fill a connecting gap between the circular transmission tower foundation and a transmission tower foot plate;
s44, after the grouting material is solidified, pouring concrete above the solidified grouting material to form a protective cap;
s45, after the protective cap is solidified, the die is removed.
Furthermore, the grouting material is a fluid high-strength non-shrinkage grouting material with the compressive strength grade of not less than 40 MPa.
The invention also provides a reinforcing device for the circular transmission tower foundation cracking, which is applied to the treatment method for the circular transmission tower foundation cracking in the technical scheme and comprises the following steps: the hoop components are of arc structures, at least two hoop components are spliced and assembled to form confining pressure on the circular transmission tower foundation, and if two semicircular steel plates or four quarter circular steel plates are adopted for splicing and assembling, the circular transmission tower foundation is subjected to confining pressure.
Specifically, the hoop components are semicircular steel plates, the two semicircular steel plates are assembled to form an approximately closed circular ring structure and restrain the circular transmission tower foundation, the confining pressure applied to the circular transmission tower foundation is adjusted by adjusting the relative distance between the two semicircular steel plates, the confining pressure applied by attention is not too large, and obvious indentation cannot be generated on the surface of the circular transmission tower foundation.
Furthermore, the surrounding hoop component comprises a surrounding plate and a vertical plate, wherein the two vertical plates are respectively arranged at two ends of the surrounding plate, and the vertical plate is connected with the vertical plate of the adjacent surrounding hoop component through a bolt.
Specifically, the vertical plates are arranged at the end parts of the surrounding plates and are arranged along the radial direction of the circular transmission tower foundation, the vertical plates are fixedly connected with the surrounding plates in a double-sided fillet weld connection mode, stiffening plates are arranged between the vertical plates and the surrounding plates, and the stiffening plates are respectively connected with the vertical plates and the surrounding plates in a welding mode and used for providing reliable support for the vertical plates and improving the overall strength of the surrounding hoop assembly; the vertical plate is connected with the vertical plate bolt on the adjacent other hoop component, a certain connecting gap is reserved, and the bolts are screwed down to enable the two semicircular hoop components to apply the hoop pressure to the circular transmission tower foundation.
In summary, due to the adoption of the technical characteristics, the invention has the beneficial effects that:
the circular transmission tower foundation is reinforced by vertical confining pressure through the hoop structure, so that the reinforced circular transmission tower foundation is firmer and firmer, the problem of uneven local pressure caused by a connecting gap between the tower foundation and a tower foot plate is solved starting from a cracking source, repeated cracking of the circular transmission tower foundation is avoided, and reliable and stable operation of a transmission line is guaranteed.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a method for treating cracking of a circular transmission tower foundation according to an embodiment of the invention;
fig. 2 is one of schematic diagrams of drilling by using an oblique slot-through face-hole method in the treatment method for the cracking of the circular transmission tower foundation according to the embodiment of the invention;
fig. 3 is a second schematic diagram of drilling by using an oblique crack surface hole method in the method for treating the cracking of the circular transmission tower foundation according to the embodiment of the invention;
FIG. 4 is a schematic diagram illustrating a principle that a circular transmission tower foundation cracks in the method for treating the circular transmission tower foundation cracks according to the embodiment of the invention;
FIG. 5 is an assembly schematic diagram of a reinforcing device in the method for treating the cracking of the circular transmission tower foundation according to an embodiment of the invention;
fig. 6 is a schematic diagram illustrating filling of a connection gap between a circular transmission tower foundation and a transmission tower footing plate in the method for managing cracking of the circular transmission tower foundation according to the embodiment of the present invention;
fig. 7 is a schematic view of penetrating a groined steel wire into a connecting gap in the method for treating the cracking of the circular transmission tower foundation according to the embodiment of the invention;
FIG. 8 is a schematic structural diagram of a hoop component in a cracked reinforcing device for a circular transmission tower foundation according to an embodiment of the invention;
fig. 9 is a side view of a hoop assembly in a cracked reinforcement device for a circular transmission tower foundation according to an embodiment of the invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 9 is:
1. a circular transmission tower foundation; 2. a reinforcement device; 3. a reinforcement cage; 4. a tower footing plate; 5. a well-shaped steel wire; 6. a peripheral stirrup; 7. a template; 8. connecting the gaps;
11. a hoop assembly;
111. enclosing plates; 112. a vertical plate; 113. a stiffening plate; 114. and fixing bolt holes.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
The following describes a method for treating cracks on a base of a circular transmission tower according to some embodiments of the present invention with reference to fig. 1 to 9.
Some embodiments of the application provide a method for treating cracking of a circular transmission tower foundation.
As shown in fig. 1 to 9, a first embodiment of the present invention provides a method for treating cracking of a circular transmission tower foundation, including the following steps:
s1, drilling holes around cracks of a circular transmission tower foundation 1 by adopting an oblique crack penetration face hole method, and grouting into the drilled holes to fill the cracks;
s1 specifically comprises the following steps:
s11, selecting at least two point positions around the crack of the circular transmission tower foundation 1 to carry out oblique drilling, wherein the drilling needs to penetrate through the crack surface of the crack; as shown in figures 2 and 3, two cracks are drilled, wherein holes are drilled around the cracks by a slant-through crack surface hole method, and the holes are drilled through the crack surface by 0.2-0.3 m.
According to the crack development condition on the circular transmission tower foundation 1, a phi 12mm hole is drilled by using a percussion drill for a penetrating crack or a deep crack, and a small hole is drilled by using the percussion drill according to the crack width and the crack depth condition for a non-penetrating crack.
S12, temporarily plugging the drilled hole by using a grouting nozzle, a plugging plug, a plugging cap, a plugging cover and the like to prevent external impurities or dust from entering the drilled hole;
s13, cleaning sundries and dust on the surface of the round transmission tower foundation 1;
s14, removing the plugging materials on the drilled holes, blowing dust in the drilled holes by using high-pressure gas, reducing sundries in the drilled holes as much as possible, and ensuring that gaps are filled to the maximum extent during subsequent grouting and filling;
and S15, injecting a filler into the drilled hole in a high-pressure injection mode to fill the crack of the circular transmission tower foundation 1, wherein the filler can be modified epoxy resin or cement paste and the like.
S2, carrying out confining pressure reinforcement on the circular transmission tower foundation 1 by using the reinforcing device 2, wherein the installation schematic of the reinforcing device 2 is shown in FIG. 5;
s2 specifically comprises the following steps:
s21, installing reinforcing devices 2 layer by layer from the top of the circular transmission tower foundation 1 downwards, wherein the reinforcing devices 2 surround the circular transmission tower foundation 1 and apply confining pressure to the circular transmission tower foundation 1; the method mainly aims to perform vertical confining pressure reinforcement on the circular transmission tower foundation 1 after the cracks are filled by the S1;
s22, excavating surface soil around the circular transmission tower foundation 1 along the vertical extending direction of the cracks to expose the cracks covered by the surface soil, wherein the range of an excavation plane is the range of reinforcing the circular transmission tower foundation 1 and then is expanded by 0.1m, namely the range of 0.1m is expanded on the basis of externally-wrapped concrete, and the excavation plane can be increased or decreased appropriately according to actual conditions;
s23, when the vertical length of the exposed crack is enough to install the reinforcing device 2, grouting and filling the newly exposed crack according to the S1, and installing the reinforcing device 2 after filling;
in the step S23, when the reinforcing device 2 is installed, a pit wall template 7 is synchronously installed at the position, opposite to the reinforcing device 2, of the excavated soil pit wall, so that a supporting and protecting effect is formed on the pit wall, collapse is prevented, and construction safety is guaranteed;
and S24, continuing downward excavation, and repeating the steps S22 and S23 until the confining pressure reinforcement of the deepest part in the vertical direction of the crack is completed.
In the step S24, the vertical confining pressure reinforcement range of the circular transmission tower foundation 1 is from the top of the circular transmission tower foundation 1 to the deepest position in the vertical direction of the crack, and then extends downwards by 150mm-300mm, specifically, may extend downwards by 200mm.
S3, after confining pressure reinforcement is completed, installing a reinforcement cage 3 around the circular transmission tower foundation 1, and pouring concrete by relying on the reinforcement cage 3 to form a protective shell on the outer side of the circular transmission tower foundation 1;
and S3, the reinforcement cage 3 is of a net structure and serves as a framework for pouring a concrete protective shell around the round transmission tower foundation 1, and the protective shell formed by wrapping concrete is restrained.
And S4, filling a connecting gap 8 between the circular transmission tower foundation 1 and the transmission tower foot plate 4, and eliminating the influence of uneven local voltage on the circular transmission tower foundation 1.
According to the investigation, one of the main reasons for the cracking of the circular transmission tower foundation 1 is that the local pressure applied to the circular transmission tower foundation 1 is uneven, the principle is as shown in fig. 4, when a transmission tower is erected in the construction process, a certain installation error exists in the tower, so that a connecting gap 8 exists between the tower foot plate 4 of the transmission tower and the connection surface of the concrete foundation, and along with the lengthening of the operation time, the connecting gap 8 is likely to be enlarged, so that the effective contact area between the tower foot plate 4 and the foundation is reduced, and the local pressure cracking of the circular transmission tower foundation 1 is caused.
To solve the above problem, S4 specifically includes the following steps:
s41, penetrating a # -shaped steel wire 5 into a connecting gap 8 between a circular transmission tower foundation 1 and a transmission tower foot plate 4; the groined steel wires 5 are net-shaped steel wires, and specifically, when the groined steel wires 5 are penetrated, single-stranded steel wires with the diameter of less than or equal to 4mm can be penetrated into the connecting gaps 8 one by one, the steel wires should penetrate through the connecting gaps 8 as much as possible, so that a plurality of steel wires are arranged in the connecting gaps 8 in a groined shape, and the distance between every two adjacent steel wires should be less than or equal to 150mm; and winding a peripheral stirrup 6 outside the tower foot plate 4, and fixing a steel wire on the peripheral stirrup 6, wherein the diameter of the peripheral stirrup 6 is less than or equal to 6mm.
S42, supporting a formwork around the connecting position of the tower foot plate 4 and the circular transmission tower foundation 1 to form a grouting space, wherein the grouting space is formed by formworks 7 arranged around the connecting position of the tower foot plate 4 and the circular transmission tower foundation 1 and used for restricting a grouting range, specifically, the formworks 7 can be circular or square and are matched with the shape of the tower foot plate 4, and the specified grouting range can be controlled according to the mode that the tower foot plate 4 is used as a foundation and is expanded by 50mm; the top of the template 7 is 40-60mm higher than the ground screw used for fixing the tower foot plate 4, and 50mm is selected in the embodiment;
s43, injecting grouting materials into the grouting space to fill a connecting gap 8 between the circular transmission tower foundation 1 and the transmission tower foot plate 4, wherein the grouting height is higher than that of the tower foot plate 4, and the connecting gap 8 is filled with the grouting materials as much as possible; the grouting material is high-flow-state high-strength shrinkage-free grouting material with the compressive strength grade of more than or equal to 40 MPa.
S44, after the grouting material is solidified, pouring concrete above the solidified grouting material to form a protective cap; the top of the protective cap is 40-60mm higher than the ground screw for fixing the tower foot plate 4 and can be as high as the formwork 7, and the formwork 7 plays a role in restraining concrete.
S45, after the protective cap is solidified, the die is removed.
The second embodiment of the present invention provides a reinforcing device 2 for cracks in a circular transmission tower foundation 1, and as shown in fig. 1 to 9, on the basis of the first embodiment, the reinforcing device is applied to step S2 of the method for managing cracks in a circular transmission tower foundation 1 described in the above embodiment, and specifically includes: the hoop components 11 are of arc structures, at least two hoop components 11 are spliced and assembled to form confining pressure on the circular transmission tower foundation 1, and if two semicircular steel plates or four quarter circular steel plates are adopted for splicing and assembling, the hoop components 11 are of arc structures.
Specifically, the hoop components 11 are semicircular steel plates, two semicircular steel plates are assembled to form an approximately closed circular ring structure and constrain the circular transmission tower foundation 1, the confining pressure applied to the circular transmission tower foundation 1 is adjusted by adjusting the relative distance between the two semicircular steel plates, the confining pressure applied needs to be noticed not to be too large, and obvious indentation cannot be generated on the surface of the circular transmission tower foundation 1.
Every two hoop components 11 form a set of reinforcing device 2, a plurality of sets of reinforcing devices 2 are installed on the circular transmission tower foundation 1 according to the step S2 to carry out vertical confining pressure reinforcement on the circular transmission tower foundation 1, and the vertical clear distance between every two adjacent sets of reinforcing devices 2 is smaller than or equal to 200mm.
Further, the strapping assembly 11 comprises a coaming 111 and a riser 112, two risers 112 are respectively arranged at two ends of the coaming 111, and the riser 112 is bolted with the riser 112 of the adjacent strapping assembly 11.
Specifically, the vertical plates 112 are arranged at the end portions of the surrounding plates 111 and are arranged along the radial direction of the circular transmission tower foundation 1, the vertical plates 112 are fixedly connected with the surrounding plates 111 in a double-sided fillet weld connection mode, stiffening plates 113 are arranged between the vertical plates 112 and the surrounding plates 111, and the stiffening plates 113 are respectively connected with the vertical plates 112 and the surrounding plates 111 in a welding mode and used for providing reliable support for the vertical plates 112 and improving the overall strength of the surrounding hoop assembly 11; riser 112 and adjacent another enclose riser 112 bolted connection on the hoop subassembly 11 to having certain joint gap, theoretical joint gap s is 40mm, also can carrying out the adaptability adjustment according to actual conditions, screws up the bolt and makes two semi-circular enclose hoop subassembly 11 exert to circular transmission tower basis 1 and enclose the pressure, screws up behind the bolt joint gap s and should reduce 2mm at least.
The enclosing plate 111 can be provided with a plurality of fixing bolt holes 114, and bolts are screwed into the fixing bolt holes 114, so that the enclosing plate 111 is circumferentially pre-tightened on the circular transmission tower foundation 1, and the enclosing plate 111 is fixed on the surface of the circular transmission tower foundation 1, so that the sliding is reduced.
In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for treating cracking of a circular transmission tower foundation is characterized by comprising the following steps:
s1, drilling holes around the cracks of a circular transmission tower foundation by adopting an oblique crack surface hole penetrating method, and grouting into the drilled holes to fill the cracks;
s2, carrying out confining pressure reinforcement on the circular transmission tower foundation by using a reinforcement device;
s3, after confining pressure reinforcement is completed, installing a reinforcement cage around the circular transmission tower foundation, and pouring concrete by relying on the reinforcement cage to form a protective shell on the outer side of the circular transmission tower foundation;
and S4, filling a connecting gap between the circular transmission tower foundation and a transmission tower foot plate, and eliminating the influence of uneven local voltage on the circular transmission tower foundation.
2. The treatment method for the cracking of the base of the round transmission tower according to claim 1, wherein S1 comprises the following steps:
s11, selecting at least two point positions around a crack of a circular transmission tower foundation to carry out oblique drilling, wherein the drilling needs to penetrate through the crack surface of the crack;
s12, temporarily plugging the drilled hole by using a grouting nozzle or a plugging plug;
s13, cleaning sundries and dust on the surface of the round transmission tower foundation;
s14, removing the plugging object on the drilled hole, and blowing dust in the drilled hole by using high-pressure gas;
and S15, injecting a filler into the drilled hole to fill the cracks of the circular transmission tower foundation.
3. The treatment method for the cracking of the base of the round transmission tower according to claim 1, wherein the S2 comprises the following steps:
s21, installing reinforcing devices layer by layer from the top of the circular transmission tower foundation downwards, surrounding the circular transmission tower foundation by the reinforcing devices, and applying confining pressure to the circular transmission tower foundation;
s22, excavating surface soil around the circular transmission tower foundation along the vertical extending direction of the cracks to expose the cracks covered by the surface soil;
s23, when the vertical length of the exposed crack is enough to install the reinforcing device, grouting and filling the newly exposed crack according to the S1, and installing the reinforcing device after filling;
and S24, continuing downward excavation, and repeating the steps S22 and S23 until the confining pressure reinforcement of the deepest part in the vertical direction of the crack is completed.
4. The method for treating the circular transmission tower foundation cracking as claimed in claim 3, wherein in step S23, when the reinforcing device is installed, a pit wall template is synchronously installed at a position, opposite to the reinforcing device, of the excavated soil pit wall.
5. The treatment method for the cracking of the circular transmission tower foundation according to claim 3, wherein in the step S24, the vertical confining pressure reinforcement range for the circular transmission tower foundation is from the top of the circular transmission tower foundation to the deepest position in the vertical direction of the crack, and then extends downwards by 150-300 mm.
6. The method for treating the cracking of the circular transmission tower foundation according to claim 1, wherein the steel reinforcement cage in the step S3 is used as a framework for pouring a concrete protective shell around the circular transmission tower foundation.
7. The treatment method for the cracking of the base of the round transmission tower according to claim 1, wherein the S4 comprises the following steps:
s41, penetrating a # -shaped steel wire into a connecting gap between a circular transmission tower foundation and a transmission tower foot plate;
s42, supporting a formwork around the connecting position of the tower foot plate and the circular transmission tower foundation to form a grouting space;
s43, injecting grouting materials into the grouting space to fill a connecting gap between the circular transmission tower foundation and a transmission tower foot plate;
s44, after the grouting material is solidified, pouring concrete above the solidified grouting material to form a protective cap;
s45, after the protective cap is solidified, the die is removed.
8. The treatment method for the foundation cracking of the round transmission tower according to claim 7, wherein the grouting material is a fluid high-strength non-shrinkage grouting material with a compressive strength grade of not less than 40 MPa.
9. A reinforcing device for circular transmission tower foundation cracking is characterized by being applied to the method for treating circular transmission tower foundation cracking according to any one of claims 1 to 8, and comprising the following steps: the hoop components are of arc structures, and at least two hoop components are spliced and assembled to form confining pressure on the circular transmission tower foundation.
10. The device of claim 9, wherein the hoop components comprise a shroud and risers, the risers are respectively arranged at two ends of the shroud, and the risers are connected with the risers of the adjacent hoop components through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210967335.5A CN115573376A (en) | 2022-08-12 | 2022-08-12 | Treatment method and reinforcement device for circular transmission tower foundation cracking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210967335.5A CN115573376A (en) | 2022-08-12 | 2022-08-12 | Treatment method and reinforcement device for circular transmission tower foundation cracking |
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| CN115573376A true CN115573376A (en) | 2023-01-06 |
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| CN202210967335.5A Pending CN115573376A (en) | 2022-08-12 | 2022-08-12 | Treatment method and reinforcement device for circular transmission tower foundation cracking |
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