CN114525804A - Prefabricated plate type spiral anchor combined foundation for power transmission line - Google Patents

Abstract

The invention discloses a prefabricated plate type spiral anchor combined foundation for a power transmission line, which comprises a prefabricated foundation bottom plate, wherein the upper end of the prefabricated foundation bottom plate is fixedly connected with a plurality of foundation embedded parts, the lower ends of the foundation embedded parts penetrate through the prefabricated foundation bottom plate, and the upper end of the prefabricated foundation bottom plate is fixedly connected with a plurality of hanging rings. The bearing capacity of the concrete foundation can be greatly improved by fully utilizing the stress performance of original state soil of the prefabricated plate type and spiral anchor combined foundation, the excavation amount of a foundation pit and the volume of the concrete foundation are reduced, the foundation can be conveniently transported and hoisted, meanwhile, the prefabricated foundation can greatly reduce construction procedures, the engineering quality is improved, people and materials are reduced, the machine consumption is reduced, the damage of cast-in-place reinforced concrete to peripheral vegetation and crops is avoided, the engineering cost is reduced, meanwhile, an alarm device is arranged, whether the prefabricated plate type foundation is placed horizontally can be rapidly judged, the detection step is reduced, and the inclined position can be rapidly judged conveniently.

Description

Prefabricated plate type spiral anchor combined foundation for power transmission line

Technical Field

The invention relates to the technical field of power transmission line strain tower infrastructures, in particular to a prefabricated plate type spiral anchor combined foundation for a power transmission line.

Background

In order to carry out innovation to become the first power, green to become a common form and sharing to become a fundamental purpose high-quality development concept, the construction of the power transmission line is continuously developed towards the directions of green, energy conservation, quality improvement and efficiency improvement, and the requirements of the green construction on aspects of safety, quality, efficiency, environmental protection, ecology and the like are comprehensively considered. The power transmission line is to use the strain tower in the erection process, the strain tower is an indispensable tower type of the power transmission line, and the strain tower mainly plays a role in bearing the tension and the gravity of a lead in the power transmission line, namely, bearing horizontal load and vertical load and simultaneously playing a role in changing the line erection direction.

At present, the traditional cast-in-place reinforced concrete foundation is mainly adopted to fix the tension tower in the erection process of the tension tower, but the cast-in-place reinforced concrete foundation has complex construction procedures, engineering safety and quality are not easy to control, energy consumption is high, the construction period is long, the peripheral environment of a construction site is easy to seriously damage, the construction method is not suitable for construction period nervous engineering, emergency repair engineering and construction engineering in cold seasons in winter, and the direction of green sustainable development is not met, so that how to reasonably solve the problem is needed to be considered.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a prefabricated plate type and spiral anchor combined foundation for a power transmission line, which can fully utilize the stress performance of undisturbed soil, greatly improve the bearing capacity of a concrete foundation, reduce the excavation amount of a foundation pit and the volume of the concrete foundation, facilitate the transportation and hoisting of the foundation, greatly reduce the construction process, improve the engineering quality, reduce the human, material and machine consumption, avoid the damage of cast-in-place reinforced concrete to peripheral vegetation and crops, reduce the engineering cost, and rapidly judge whether a prefabricated foundation bottom plate is placed horizontally by arranging an alarm device, reduce the detection steps and facilitate the rapid judgment of an inclined direction.

In order to achieve the purpose, the invention adopts the following technical scheme:

a prefabricated plate type and spiral anchor combined foundation for a power transmission line comprises a prefabricated foundation base plate, wherein the upper end of the prefabricated foundation base plate is fixedly connected with a plurality of basic embedded parts, the lower ends of the basic embedded parts penetrate through the prefabricated foundation base plate, the upper end of the prefabricated foundation base plate is fixedly connected with a plurality of hanging rings, the upper end of each basic embedded part is provided with a plurality of spiral anchor connecting pieces, the lower ends of the spiral anchor connecting pieces extend into the corresponding basic embedded parts, the upper end of each basic embedded part is provided with a spiral anchor, each spiral anchor connecting piece is provided with a plurality of first threaded holes, the upper end of each spiral anchor is provided with a second threaded hole matched with the first threaded hole in each spiral anchor connecting piece, each first threaded hole is connected with the corresponding second threaded hole through a bolt, the upper end of the prefabricated foundation base plate is provided with a foundation upright post, and a plurality of foundation bolts are fixedly connected to the foundation upright column.

Preferably, the screw anchor comprises anchor head, stock and anchor page or leaf, the second screw hole sets up in the upper end of anchor head, the lower extreme fixedly connected with stock of anchor head, the lower extreme of stock runs through screw anchor connecting piece and a plurality of anchor pages of fixedly connected with.

Preferably, the distance between the center of each lifting ring and the edge of the base upright post is one hundred twenty five millimeters, and each lifting ring is a U-shaped mechanism.

Preferably, a shaking box is arranged in the prefabricated foundation slab, conductive blocks are arranged on the inner walls of four sides in each shaking box, the inner bottom of each shaking box is an arc surface, and copper balls are arranged in each shaking box.

Preferably, prefabricated foundation plate's upper end is equipped with a plurality of rectangle boxes, every all be equipped with the installation cavity in the rectangle box, every the pilot lamp, every are all installed to the interior bottom of installation cavity the interior top of installation cavity all is equipped with luminous mouthful, every be equipped with horizontal chamber in the rectangle box, every luminous mouthful all runs through corresponding horizontal chamber, every horizontal intracavity all is equipped with the shifter.

Preferably, the shifter is including setting up the piston in horizontal intracavity, the piston passes through circular telegram spring elastic connection with the inner wall sliding connection in horizontal chamber, the one side that basic stand was kept away from to the piston passes through circular telegram spring elastic connection with one side inner wall that basic stand was kept away from to horizontal chamber, the piston has electric conductivity, the interior top in horizontal chamber is equipped with the conducting strip with piston matched with, one side fixedly connected with connecting rod that is close to basic stand of piston, one side fixedly connected with baffle of piston is kept away from to the connecting rod, baffle and the inner wall sliding connection in horizontal chamber, be equipped with a plurality of openings on the baffle, every all be equipped with the color palette in the opening.

Preferably, every one side space that basic stand was kept away from in horizontal chamber all communicates through the intake pipe with the external world, every one side space that basic stand was kept away from in horizontal chamber all communicates through the outlet duct with the headspace that corresponds the installation cavity, all be equipped with the check valve on intake pipe and the outlet duct, every the installation cavity communicates through a plurality of louvres with the external world.

The invention has the following beneficial effects:

1. compared with the prior art, the bearing capacity of the concrete foundation is greatly improved by fully utilizing the stress performance of the undisturbed soil through the combination of the prefabricated plate type foundation and the spiral anchor, the excavation amount of a foundation pit and the volume of the concrete foundation are reduced, the transportation and hoisting of the foundation are facilitated, the standardized design, the factory processing, the modular construction and the mechanized construction are realized, the construction procedures are greatly reduced, the engineering quality is improved, the consumption of people, materials and machines is reduced, the damage of cast-in-place reinforced concrete to peripheral vegetation and crops is avoided, the compensation expense of trees and crops is reduced, the engineering cost is reduced, and the method is particularly suitable for construction in cold seasons in winter and emergency repair engineering needing to be rapidly put into production;

2. compared with the prior art, the position and number design of the spiral anchor can ensure that the combined foundation meets the requirements of bearing capacity limit and normal use limit state, and the phenomena of structural damage or instability such as local damage, integral damage, overturning, upward pulling and the like do not occur, and the application of the spiral anchor can reduce the using amount of concrete and reinforcing steel bars, improve the bearing capacity and stability of the foundation, reduce the volume of the prefabricated plate type foundation and facilitate the transportation and installation of the foundation;

3. compared with the prior art, the spiral anchor embedded part and the spiral anchor connecting structure can ensure the stable connection of the spiral anchor and the plate type foundation, improve the integrity of the combined foundation, greatly reduce the stress concentration effect of concrete at the joint of the spiral anchor and the plate type foundation and ensure that the plate type foundation is not locally damaged;

4. compared with the prior art, through the design of the number and the position of the lifting rings, the stress of the prefabricated foundation in all directions is uniform and reasonable when the prefabricated foundation is lifted, the phenomena of inclination, even overturning and the like do not occur, the foundation cannot be damaged due to lifting, and the material design and the fixed design of the lifting rings can meet the stress requirement of the foundation when the foundation is lifted.

5. Compared with the prior art, through the setting of a plurality of rectangle boxes and pilot lamp for at the in-process of actual installation, the orientation of whether taking place the slope and taking place the slope of this prefabricated foundation bottom plate of judgement that can be quick, the look board that utilizes a plurality of different colours simultaneously makes the continuous change of colour of the light that the rectangle box sent, thereby can play better warning effect.

Drawings

Fig. 1 is a schematic structural diagram of a prefabricated plate type and spiral anchor combined foundation for a power transmission line provided by the invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 2;

FIG. 4 is a schematic structural view of the basic embedment of FIG. 1;

FIG. 5 is a schematic structural view of the helical anchor connection of FIG. 1;

FIG. 6 is a schematic view of the installation of the prefabricated plate type and spiral anchor combined foundation structure.

In the figure: the device comprises a prefabricated foundation bottom plate 1, a foundation embedded part 2, an anchor rod 3, a spiral anchor connecting piece 4, a lifting ring 5, a foundation upright post 6, an anchor head 7, an anchor leaf 8, a shaking box 9, a copper ball 10, a conductive block 11, a rectangular box 12, an indicator lamp 13, a heat dissipation hole 14, a light emitting opening 15, a transverse cavity 16, a baffle 17, an opening 18, a color plate 19, an air inlet pipe 20, an air outlet pipe 21, a power-on spring 22, a piston 23, a conductive plate 24 and a connecting rod 25.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-6, a prefabricated plate type and spiral anchor combined foundation for a power transmission line comprises a prefabricated foundation slab 1, wherein reinforcing steel bars of the prefabricated foundation slab 1 are fixed with reinforcing steel bars of foundation columns 6, then the prefabricated slab foundation is integrally poured, a plurality of foundation embedded parts 2 are fixedly connected to the upper end of the prefabricated foundation slab 1, the foundation embedded parts 2 are used for reserving through holes of the prefabricated foundation slab 1 for spiral anchors and are used for connecting the prefabricated slab foundation with spiral anchor connecting parts 4, the lower ends of the plurality of foundation embedded parts 2 penetrate through the prefabricated foundation slab 1, a plurality of lifting rings 5 are fixedly connected to the upper end of the prefabricated foundation slab 1, the number of the foundation embedded parts 2 and the number of the lifting rings 5 are four, the distance between the center of each lifting ring 5 and the edge of the foundation column 6 is one hundred twenty five millimeters, the lifting rings 5 are made of Q235 reinforcing steel bars with the diameter of twenty five, and the lifting rings 5 are bound with the foundation columns through a reinforcing steel bar network, each hanging ring 5 is a U-shaped mechanism, the upper end of each basic embedded part 2 is provided with a plurality of spiral anchor connecting pieces 4, the lower ends of the spiral anchor connecting pieces 4 all extend into the corresponding basic embedded part 2, the upper end of each basic embedded part 2 is provided with a spiral anchor, the spiral anchor consists of an anchor head 7, an anchor rod 3 and an anchor page 8, a second threaded hole is arranged at the upper end of the anchor head 7, the lower end of the anchor head 7 is fixedly connected with the anchor rod 3, the lower end of the anchor rod 3 penetrates through the spiral anchor connecting pieces 4 and is fixedly connected with the anchor pages 8, each spiral anchor connecting piece 4 is provided with a plurality of first threaded holes, the upper end of the spiral anchor is provided with a second threaded hole matched with the first threaded hole on the spiral anchor connecting piece 4, each first threaded hole is connected with the corresponding second threaded hole through a bolt, the upper end of the prefabricated slab type foundation is provided with a basic upright 6, the basic upright 6 is fixedly connected with a plurality of foundation bolts, the foundation bolt is used for connecting the foundation and the iron tower.

Wherein, be equipped with in prefabricated foundation plate 1 and rock box 9, every is rocked and all is equipped with conducting block 11 on the four sides inner wall in the box 9, the interior bottom of rocking box 9 is the cambered surface, rock and be equipped with copper ball 10 in the box 9, can set up an external power supply, conducting block 11, copper ball 10, the pilot lamp 13 that corresponds passes through the wire and constitutes a return circuit, a plurality of pilot lamp 13's series each other, prefabricated foundation plate 1's upper end is equipped with a plurality of rectangle boxes 12, the quantity of rectangle box 12 is four, all be equipped with the installation cavity in every rectangle box 12, pilot lamp 13 is all installed to the interior bottom of every installation cavity, the interior top of every installation cavity all is equipped with luminous mouth 15, be equipped with horizontal cavity 16 in every rectangle box 12, every luminous mouth 15 all runs through corresponding horizontal cavity 16, all be equipped with the shifter in every horizontal cavity 16.

Wherein, the switching mechanism comprises a piston 23 arranged in the transverse cavity 16, the piston 23 is connected with the inner wall of the transverse cavity 16 in a sliding way, one side of the piston 23 far away from the basic upright post 6 is elastically connected with the inner wall of one side of the transverse cavity 16 far away from the basic upright post 6 through an electrifying spring 22, the piston 23 has electrical conductivity, the inner top of the transverse cavity 16 is provided with a conducting strip 24 matched with the piston 23, an external power supply, a copper ball 10, a conducting block 11, the conducting strip 24, the piston 23 and the electrifying spring 22 form a loop through electrical conduction, the loop where the electrifying spring 22 is arranged is connected in parallel with the loop where the corresponding indicator lamp 13 is arranged, one side of the piston 23 close to the basic upright post 6 is fixedly connected with a connecting rod 25, one side of the connecting rod 25 far away from the piston 23 is fixedly connected with a baffle 17, the baffle 17 is connected with the inner wall of the transverse cavity 16 in a sliding way, the baffle 17 is provided with a plurality of through holes 18, each through hole 18 is internally provided with a color plate 19, the color of each panel 19 is red, green and blue in sequence from near the base post 6 to far from the base post 6.

Wherein, one side space that basic stand 6 was kept away from to every horizontal chamber 16 all communicates through intake pipe 20 with the external world, one side space that basic stand 6 was kept away from to every horizontal chamber 16 all communicates through outlet duct 21 with the headspace that corresponds the installation cavity, all be equipped with the check valve on intake pipe 20 and the outlet duct 21, external gas passes through 20 one-way entering of intake pipe to one side space that basic stand 6 was kept away from to horizontal chamber 16, the gas in one side space that basic stand 6 was kept away from to horizontal chamber 16 passes through 21 one-way entering to the installation cavity of outlet duct, every installation cavity communicates through a plurality of louvres 14 with the external world.

The invention can be illustrated by the following operating modes: when the tension tower needs to be installed and fixed, four prefabricated plate type and spiral anchor combined foundation structures are prepared, firstly, foundation pits matched with the foundation structure are formed in the ground, accurate positions of four tower leg foundations and installation positions of spiral anchors on each foundation are accurately located through a total station, the spiral anchors are installed through special machinery, then a cushion layer arranged in each foundation pit is laid, deep grooves are formed in the cushion layer, cement paste should be laid between the foundations and the cushion layer before the prefabricated foundation bottom plate 1 is hoisted, fine adjustment for foundation positioning can be achieved during hoisting, cementing is achieved after hoisting is completed, and the integral stress performance of the foundation structure is improved.

Arranging one of the foundation base plates in a groove corresponding to the cushion layer, inserting the anchor rods 3 at four corners of the foundation into the foundation embedded parts 2 in the prefabricated foundation base plate 1, and in the installation process, when inserting the anchor rods 3 into the foundation embedded parts 2 in the prefabricated foundation base plate 1, and at the moment, when the prefabricated foundation base plate 1 inclines due to the fact that the bottom of a foundation pit is uneven, enabling the copper ball 10 to roll along an inclined angle, so that the copper ball 10 is in contact with the conductive block 11 on one side, which inclines downwards, and enabling the indicator light 13 to be electrified, and at the moment, the indicator light 13 emits light which is emitted through the color plate 19 and the light emitting port 15, so that people can conveniently judge whether the prefabricated foundation base plate 1 inclines and the inclination direction;

meanwhile, when the indicator light 13 is powered on, because the corresponding piston 23 is in a contact state with the conducting strip 24, the power spring 22 is also powered on, and after the power spring 22 is powered on, according to the electromagnetic effect, each turn of the energizing spring 22 generates a magnetic field, and after the direction of the magnetic field is determined according to the direction of the current, the magnetic fields generated between every two adjacent energized springs 22 are opposite in direction, that is, an attractive force is generated between every two adjacent energized springs 22, that is, after the power is turned on, the whole power spring 22 will contract, so that the baffle 17 moves to the right, and after the piston 23 is separated from the conducting strip 24, because the piston 23 has inertia, the baffle will continue to move to the left for a certain distance, then under the elastic action of the energizing spring 22, the piston 23 drives the baffle 17 to move right, and when the piston 23 contacts with the conducting strip 24 again, the process is repeated;

after the prefabricated plate type foundation is inclined, the baffle 17 can drive the three color plates 19 to move left and right continuously, so that light emitted by the indicator lamp 13 continuously passes through the three color plates 19 and is transmitted out, the color of the light is continuously changed, and a better reminding effect is achieved;

meanwhile, the baffle 17 moves left and right to continuously suck outside air into a space on one side of the transverse cavity 16 far away from the base upright post 6 through the air inlet pipe 20, then the air is pressed into the installation cavity and is exhausted through the plurality of heat dissipation holes 14, so that the air flow in the installation cavity can be accelerated, and the heat dissipation effect on the indicator lamp 13 is further improved;

when prefabricated foundation slab 1 inclines, can utilize the jack to remove prefabricated foundation slab 1 to accurate position, embolia the stock 3 that exposes with spiral anchor connecting piece 4 after that, through pre-buried bolt with spiral anchor connecting piece 4 and basic built-in fitting 2 fastening connection, insert the bolt in proper order in the bolt hole of stock 3 and spiral anchor connecting piece 4, accomplish spiral anchor and prefabricated foundation slab 1 fastening connection.

After the foundation is installed, in order to prevent underground water from rusting the reinforcing steel bars inside the foundation structure through the rusted lifting rings 5 and the reinforcing steel bars of the spiral anchor connecting pieces 4, epoxy asphalt resin asphalt paint is adopted to spray the lifting rings 5 for three to four times at high pressure, and then glass fiber cloth is used for reinforcing and protecting three layers of asphalt and two layers of felts, and then the foundation pit can be backfilled and tamped in layers.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims (7)

1. The utility model provides a prefabricated board-like spiral anchor combination basis that adds of transmission line, includes prefabricated foundation slab (1), its characterized in that: the upper end of the prefabricated foundation slab (1) is fixedly connected with a plurality of foundation embedded parts (2), the lower ends of the foundation embedded parts (2) penetrate through the prefabricated foundation slab (1), the upper end of the prefabricated foundation slab (1) is fixedly connected with a plurality of lifting rings (5), the upper end of the foundation embedded part (2) is provided with a plurality of spiral anchor connecting parts (4), the lower ends of the spiral anchor connecting parts (4) extend into the corresponding foundation embedded parts (2), the upper end of each foundation embedded part (2) is provided with a spiral anchor, each spiral anchor connecting part (4) is provided with a plurality of first threaded holes, the upper end of each spiral anchor is provided with second threaded holes matched with the first threaded holes in the spiral anchor connecting parts (4), each first threaded hole is connected with the corresponding second threaded hole through a bolt, the upper end of the prefabricated slab foundation is provided with a foundation upright post (6), and a plurality of foundation bolts are fixedly connected to the foundation upright post (6).

2. The prefabricated plate type spiral anchor combined foundation for the power transmission line according to claim 1, wherein the prefabricated plate type spiral anchor combined foundation comprises: the spiral anchor comprises anchor head (7), stock (3) and anchor page or leaf (8), the second screw hole sets up in the upper end of anchor head (7), the lower extreme fixedly connected with stock (3) of anchor head (7), the lower extreme of stock (3) runs through spiral anchor connecting piece (4) and a plurality of anchor pages or leaves (8) of fixedly connected with.

3. The prefabricated plate type spiral anchor combined foundation for the power transmission line according to claim 1, wherein the prefabricated plate type spiral anchor combined foundation comprises: the distance between the center of each lifting ring (5) and the edge of the foundation upright post (6) is one hundred twenty five millimeters, and each lifting ring (5) is a U-shaped mechanism.

4. The prefabricated plate type spiral anchor combined foundation for the power transmission line according to claim 3, wherein the prefabricated plate type spiral anchor combined foundation comprises: the prefabricated foundation slab is characterized in that shaking boxes (9) are arranged in the prefabricated foundation slab (1), each shaking box (9) is internally provided with a conductive block (11) on the inner walls of four sides, the inner bottom of each shaking box (9) is a cambered surface, and each shaking box (9) is internally provided with a copper ball (10).

5. The prefabricated plate type spiral anchor combined foundation for the power transmission line according to claim 1, wherein the prefabricated plate type spiral anchor combined foundation comprises: the upper end of prefabricated foundation slab (1) is equipped with a plurality of rectangle boxes (12), every all be equipped with the installation cavity in rectangle box (12), every pilot lamp (13), every are all installed to the interior bottom of installation cavity the interior top of installation cavity all is equipped with light-emitting opening (15), every be equipped with horizontal chamber (16) in rectangle box (12), every light-emitting opening (15) all run through corresponding horizontal chamber (16), every all be equipped with the shifter in horizontal chamber (16).

6. The prefabricated plate type spiral anchor combined foundation for the power transmission line according to claim 5, wherein the prefabricated plate type spiral anchor combined foundation comprises: the conversion mechanism comprises a piston (23) arranged in the transverse cavity (16), the piston (23) is connected with the inner wall of the transverse cavity (16) in a sliding way, one side of the piston (23) far away from the basic upright post (6) is elastically connected with the inner wall of the transverse cavity (16) far away from the basic upright post (6) through an energizing spring (22), the piston (23) has conductivity, the inner top of the transverse cavity (16) is provided with a conducting strip (24) matched with the piston (23), one side of the piston (23) close to the base upright post (6) is fixedly connected with a connecting rod (25), a baffle plate (17) is fixedly connected with one side of the connecting rod (25) far away from the piston (23), baffle (17) and the inner wall sliding connection who violently holds (16), be equipped with a plurality of openings (18) on baffle (17), every all be equipped with palette (19) in opening (18).

7. The prefabricated plate type spiral anchor combined foundation for the power transmission line according to claim 6, wherein the prefabricated plate type spiral anchor combined foundation comprises: every one side space that basic stand (6) were kept away from in horizontal chamber (16) all communicates through intake pipe (20) with the external world, every one side space that basic stand (6) were kept away from in horizontal chamber (16) all communicates through outlet duct (21) with the headspace that corresponds the installation cavity, all be equipped with the check valve on intake pipe (20) and the outlet duct (21), every the installation cavity communicates through a plurality of louvres (14) with the external world.

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