CN114525804B

CN114525804B - Prefabricated plate type screw anchor combined foundation for power transmission line

Info

Publication number: CN114525804B
Application number: CN202210224444.8A
Authority: CN
Inventors: 韩立奎; 赵书龙; 曲志伟; 王继鑫; 常宾; 尹荣庆; 王健; 李俊江; 韩晓冰; 孙海莉; 尚卓群; 张明丽; 梁新阁; 魏世红; 张官东; 罗学统; 张振永
Original assignee: Dezhou Huade Power Survey And Design Co ltd; Dezhou Zhongmao Electric Power Survey And Design Co ltd; Dezhou Power Supply Co of State Grid Shandong Electric Power Co Ltd
Current assignee: Dezhou Huade Power Survey And Design Co ltd; Dezhou Zhongmao Electric Power Survey And Design Co ltd; Dezhou Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2023-06-02
Anticipated expiration: 2042-03-09
Also published as: CN114525804A

Abstract

The invention discloses a prefabricated plate type screw anchor combined foundation for a power transmission line, which comprises a prefabricated foundation base plate, wherein the upper end of the prefabricated foundation base plate is fixedly connected with a plurality of foundation embedded parts, the lower ends of the foundation embedded parts penetrate through the prefabricated foundation base plate, and the upper end of the prefabricated foundation base plate is fixedly connected with a plurality of hanging rings. The prefabricated plate-type screw anchor combined foundation can fully utilize the stress performance of undisturbed soil, greatly improve the bearing capacity of the concrete foundation, reduce the excavation quantity of a foundation pit and the volume of the concrete foundation, facilitate the transportation and hoisting of the foundation, simultaneously reduce the construction procedures, the engineering quality, the man, the material and the machine consumption of the prefabricated foundation, avoid the damage of cast-in-situ reinforced concrete to peripheral vegetation and crops, reduce the engineering cost, simultaneously set an alarm device to rapidly judge whether the prefabricated plate-type foundation is placed horizontally or not, reduce the detection steps and facilitate the rapid judgment of the inclination direction.

Description

Prefabricated plate type screw anchor combined foundation for power transmission line

Technical Field

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

Background

In order to implement innovation into a first power, green becomes a general form, and sharing becomes a fundamental purpose high-quality development idea, 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 green construction on safety, quality, efficiency, environmental protection, ecology and the like are met. The tension tower is an indispensable tower type of the transmission line in the erection process of the transmission line, and mainly plays roles in bearing the tension and gravity of the wires, namely horizontal load and vertical load, and simultaneously plays a role in changing the erection direction of the line.

At present, the tension tower is mainly fixed by adopting a traditional cast-in-situ reinforced concrete foundation in the erection process, but the cast-in-situ reinforced concrete foundation has complex construction procedures, safe engineering, difficult quality control, high energy consumption, long construction period and easy serious damage to the surrounding environment of a construction site, is not suitable for construction projects with tense construction period, emergency repair engineering and cold season construction engineering in winter, and does not meet the direction of green sustainable development, so that how to reasonably solve the problem is considered by us.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a prefabricated plate-type screw anchor combined foundation for a power transmission line, wherein the prefabricated plate-type screw anchor combined foundation can fully utilize the stress performance of undisturbed soil, greatly improve the bearing capacity of a concrete foundation, reduce the excavation quantity 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 consumption of people, materials and machines, avoid the damage of cast-in-situ reinforced concrete to peripheral vegetation and crops, reduce the engineering cost, and simultaneously, an alarm device is arranged to rapidly judge whether a prefabricated foundation bottom plate is placed horizontally or not, reduce the detection steps and facilitate the rapid judgment of the inclination direction.

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

the utility model provides a prefabricated board-like screw anchor combination foundation that adds of transmission line, includes prefabricated foundation base plate, the upper end fixedly connected with of prefabricated foundation base plate a plurality of basis built-in fitting, a plurality of the lower extreme of basis built-in fitting all runs through prefabricated foundation base plate, the upper end fixedly connected with of prefabricated foundation base plate a plurality of rings, the upper end of basis built-in fitting is equipped with a plurality of screw anchor connecting pieces, and the lower extreme of a plurality of screw anchor connecting pieces all extends to in the basis built-in fitting that corresponds, every the upper end of basis built-in fitting all is equipped with the screw anchor, every all be equipped with a plurality of first screw holes on the screw anchor connecting piece, the upper end of screw anchor is equipped with the second screw hole matched with on the screw anchor connecting piece, every first screw hole passes through bolted connection with the second screw hole that corresponds, the upper end of prefabricated foundation base plate is equipped with the foundation stand, fixedly connected with a plurality of rag bolts on the foundation stand.

Preferably, the spiral 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 spiral anchor connecting piece and fixedly connected with a plurality of anchor page or leaf.

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

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

Preferably, the upper end of prefabricated foundation mat is equipped with a plurality of rectangle boxes, every all be equipped with the installation cavity in the rectangle box, every the pilot lamp is all installed to the interior bottom in installation cavity, every the interior top in installation cavity all is equipped with luminous mouth, every be equipped with horizontal chamber in the rectangle box, every luminous mouth all runs through corresponding horizontal chamber, every horizontal intracavity all is equipped with conversion mechanism.

Preferably, the switching mechanism comprises a piston arranged in a transverse cavity, the piston is in sliding connection with the inner wall of the transverse cavity, one side of the piston, far away from the basic upright, is in elastic connection with the inner wall of one side, far away from the basic upright, of the transverse cavity through an electrified spring, the piston is conductive, the inner top of the transverse cavity is provided with a conductive sheet matched with the piston, one side, close to the basic upright, of the piston is fixedly connected with a connecting rod, one side, far away from the piston, of the connecting rod is fixedly connected with a baffle, the baffle is in sliding connection with the inner wall of the transverse cavity, a plurality of through holes are formed in the baffle, and color plates are arranged in the through holes.

Preferably, each transverse cavity is far away from a side space of the foundation upright post and the outside are communicated through an air inlet pipe, each transverse cavity is far away from a side space of the foundation upright post and the top space of the corresponding installation cavity are communicated through an air outlet pipe, check valves are arranged on the air inlet pipe and the air outlet pipe, and each installation cavity is communicated with the outside through a plurality of heat dissipation holes.

The invention has the following beneficial effects:

1. compared with the prior art, the method has the advantages that the stress performance of undisturbed soil can be fully utilized through the combination of the prefabricated plate type foundation and the spiral anchor, the bearing capacity of the concrete foundation is greatly improved, the excavation amount of the foundation pit and the volume of the concrete foundation are reduced, the foundation is convenient to transport and hoist, standardized design, factory processing, modularized construction and 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-situ reinforced concrete to peripheral vegetation and crops is avoided, the compensation cost of trees and crops is reduced, the engineering cost is reduced, and the method is particularly suitable for construction in cold winter and emergency repair engineering needing quick input production;

2. compared with the prior art, the combined foundation can meet the requirements of bearing capacity limit and normal use limit state through the position and number design of the screw anchors, the phenomena of structural damage or instability and the like such as local damage, integral damage, overturning, pulling-up and the like do not occur, the use of the screw anchors can reduce the consumption of concrete and reinforcing steel bars, the bearing capacity and stability of the foundation are improved, the volume of the prefabricated plate foundation is reduced, and the transportation and the installation of the foundation are facilitated;

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

4. compared with the prior art, through the rings quantity and the position design that set up, can guarantee that prefabricated basis is evenly reasonable in each direction atress when lifting by crane the time base, phenomenon such as slope or even topple does not take place, and can not cause the damage to the basis because of the hoist and mount, the material design and the fixed design of rings can satisfy the atress requirement of basis when lifting by crane.

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 direction of whether taking place the slope and taking place the slope of this prefabricated foundation mat of judgement that can be quick utilizes the color board of a plurality of different colours to make the continuous change of the colour of the light that the rectangle box sent simultaneously, thereby can play better warning effect.

Drawings

Fig. 1 is a schematic structural diagram of a prefabricated plate type screw anchor combined foundation for a power transmission line;

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

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

FIG. 4 is a schematic view of the structure of the foundation embedded part in FIG. 1;

FIG. 5 is a schematic view of the construction of the screw anchor connection of FIG. 1;

FIG. 6 is a schematic view of the installation of a prefabricated plate plus screw anchor composite foundation structure.

In the figure: 1 prefabricated foundation bottom plate, 2 foundation embedded parts, 3 anchor rods, 4 screw anchor connectors, 5 hanging rings, 6 foundation columns, 7 anchor heads, 8 anchor pages, 9 shaking boxes, 10 copper balls, 11 conductive blocks, 12 rectangular boxes, 13 indicator lamps, 14 heat dissipation holes, 15 luminous ports, 16 transverse cavities, 17 baffle plates, 18 through holes, 19 color plates, 20 air inlet pipes, 21 air outlet pipes, 22 energizing springs, 23 pistons, 24 conductive sheets and 25 connecting rods.

Detailed Description

The technical solutions 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 screw anchor combined foundation for a power transmission line comprises a prefabricated foundation slab 1, wherein steel bars of the prefabricated foundation slab 1 are fixed with steel bars of foundation columns 6, then the prefabricated plate type foundation is integrally poured, the upper end of the prefabricated foundation slab 1 is fixedly connected with a plurality of foundation embedded parts 2, the foundation embedded parts 2 are used for reserving perforations of the prefabricated foundation slab 1 for screw anchors and are simultaneously used for connecting the prefabricated plate type foundation with screw anchor connecting parts 4, 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 hanging rings 5, the number of the foundation embedded parts 2 and the hanging rings 5 is four, the distance between the center of each hanging ring 5 and the edge of the foundation column 6 is one hundred twenty five millimeters, the hanging rings 5 adopt Q235 steel bars with the specification of twenty-five diameters, the hanging rings 5 and the steel bars of the foundation slab are bound through a steel bar network, each hanging ring 5 is a U-shaped mechanism, the upper end of the foundation embedded part 2 is provided with a plurality of screw anchor connecting parts 4, the lower ends of the screw 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 screw anchor, each screw anchor consists of an anchor head 7, an anchor rod 3 and anchor pages 8, a second threaded hole is formed 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 screw anchor connecting parts 4 and is fixedly connected with a plurality of anchor pages 8, each screw anchor connecting part 4 is provided with a plurality of first threaded holes, the upper end of each screw anchor is provided with a second threaded hole matched with the first threaded hole on the screw anchor connecting part 4, each first threaded hole is connected with the corresponding second threaded hole through a bolt, the upper end of the prefabricated plate foundation is provided with a foundation upright 6, a plurality of rag bolts are fixedly connected to the foundation upright posts 6, and the rag bolts are used for connecting a foundation with an iron tower.

Wherein, be equipped with in the prefabricated foundation base plate 1 and rock box 9, every rocks and all is equipped with conducting block 11 on four side inner walls in the box 9, rock the interior bottom of box 9 and be the cambered surface, rock and be equipped with copper ball 10 in the box 9, external power supply can be set up, external power supply, conducting block 11, copper ball 10, corresponding pilot lamp 13 constitutes a return circuit through the wire, the mutual series connection of a plurality of pilot lamps 13, the upper end of prefabricated foundation base plate 1 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 in every installation cavity, the interior top in every installation cavity all is equipped with luminescent port 15, be equipped with horizontal chamber 16 in every rectangle box 12, every luminescent port 15 all runs through corresponding horizontal chamber 16, all be equipped with conversion mechanism in every horizontal chamber 16.

The conversion mechanism comprises a piston 23 arranged in a transverse cavity 16, the piston 23 is slidably connected with the inner wall of the transverse cavity 16, one side of the piston 23, which is far away from a base upright post 6, is elastically connected with the inner wall of one side of the transverse cavity 16, which is far away from the base upright post 6, through an energizing spring 22, the piston 23 is conductive, a conductive sheet 24 matched with the piston 23 is arranged at the inner top of the transverse cavity 16, a loop is formed by an external power supply, a copper ball 10, a conductive block 11, the conductive sheet 24, the piston 23 and the energizing spring 22 through conduction, the loop where the energizing spring 22 is located is connected in parallel with the loop where a corresponding indicator lamp 13 is located, one side of the piston 23, which is close to the base upright post 6, is fixedly connected with a connecting rod 25, one side of the connecting rod 25, which is far away from the piston 23, is fixedly connected with a baffle 17, the baffle 17 is slidably connected with the inner wall of the transverse cavity 16, a plurality of through holes 18 are formed in the baffle 17, color plates 19 are arranged in each through hole 18, and the color plate 19 is sequentially red, green and blue from the direction close to the base upright post 6.

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

The invention can explain its functional principle by the following modes of operation: when the strain tower needs to be installed and fixed, four prefabricated plate-type screw anchor combined foundation structures are prepared, foundation pits matched with the foundation structures are firstly formed on the ground, the accurate positions of four tower leg foundations and the installation positions of screw anchors on each foundation are accurately positioned by using a total station, the screw anchors are installed by using special machinery, then a cushion layer arranged in the foundation pits is paved, deep grooves are formed in the cushion layer, cement paste is paved between the foundation and the cushion layer before the prefabricated foundation slab 1 is hoisted, fine adjustment for foundation positioning can be performed during hoisting, meanwhile, cementing effect is achieved after the hoisting is completed, and the overall stress performance of the foundation structure is improved.

Setting one of the foundation slabs in the grooves of the corresponding cushion layer, wherein the anchor rods 3 at four corners of the foundation are inserted into the foundation embedded parts 2 in the prefabricated foundation slabs 1, and in the installation process, when the anchor rods 3 are inserted into the foundation embedded parts 2 in the prefabricated foundation slabs 1, when the prefabricated foundation slabs 1 incline due to uneven bottoms of foundation pits, the copper balls 10 roll along the inclined angles, so that the copper balls 10 are in contact with the downward-inclined one-side conductive blocks 11, and the downward-inclined indicator lamps 13 are electrified, and the indicator lamps 13 emit light through the color plates 19 and the luminous ports 15, so that people can conveniently judge whether the prefabricated foundation slabs 1 incline or not and the inclined directions;

meanwhile, when the indicator lamp 13 is electrified, because the corresponding piston 23 is in a contact state with the conducting strip 24, the electrified spring 22 is electrified at the moment, after the electrified spring 22 is electrified, according to the electromagnetic effect, the electrified spring 22 of each turn can generate a magnetic field, after the direction of the magnetic field is judged by the direction of the current, the directions of the magnetic fields generated between the electrified springs 22 of every two turns are opposite, namely, attractive force is generated between the adjacent electrified springs 22 of every two turns, namely, after the electrified state, the whole electrified spring 22 is contracted, so that the baffle 17 moves rightwards, when the piston 23 is separated from the conducting strip 24, the piston 23 has inertia at the moment, and can continue to move leftwards for a certain distance, then under the elastic action of the electrified spring 22, the piston 23 drives the baffle 17 to move rightwards, and when the piston 23 is contacted with the conducting strip 24 again, the process is repeated at the moment;

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

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

when the prefabricated foundation slab 1 is inclined, the prefabricated foundation slab 1 can be moved to an accurate position by using a jack, then the screw anchor connecting piece 4 is sleeved into the exposed anchor rod 3, the screw anchor connecting piece 4 is tightly connected with the foundation embedded piece 2 through the embedded bolt, the bolts are sequentially inserted into the bolt holes of the anchor rod 3 and the screw anchor connecting piece 4, and the screw anchor is tightly connected with the prefabricated foundation slab 1.

After the foundation installation is finished, in order to prevent groundwater from rusting the steel bars in the foundation structure through the rusting hanging rings 5 and the steel bars of the screw anchor connecting piece 4, epoxy asphalt resin asphalt paint is adopted to spray the hanging rings 5 three to four times under high pressure, glass fiber cloth is used for carrying out three-oil two-felt reinforcement protection, and then the foundation pit can be backfilled and tamped in a layered mode.

The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.

Claims

1. The utility model provides a prefabricated board-like 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 hanging rings (5), the upper end of the foundation embedded parts (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 a second threaded hole matched with the first threaded holes on the spiral anchor connecting parts (4), each first threaded hole is connected with the corresponding second threaded holes through bolts, the upper end of the prefabricated plate foundation is provided with a foundation upright (6), and a plurality of foundation bolts are fixedly connected to the foundation upright (6); the screw anchor consists of an anchor head (7), an anchor rod (3) and anchor pages (8), the second threaded hole is formed in the upper end of the anchor head (7), the lower end of the anchor head (7) is fixedly connected with the anchor rod (3), and the lower end of the anchor rod (3) penetrates through the screw anchor connecting piece (4) and is fixedly connected with a plurality of anchor pages (8); 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; a shaking box (9) is arranged in the prefabricated foundation slab (1), conductive blocks (11) are arranged on the inner walls of the four sides in each shaking box (9), the inner bottom of each shaking box (9) is an arc surface, and copper balls (10) are arranged in each shaking box (9); the upper end of prefabricated foundation mat (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) are all installed to the interior bottom in installation cavity, every the interior top in 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 runs through corresponding horizontal chamber (16), every all be equipped with conversion mechanism in horizontal chamber (16).

2. The prefabricated plate-type plus-spiral anchor combined foundation for power transmission lines according to claim 1, wherein: the switching mechanism comprises a piston (23) arranged in a transverse cavity (16), the piston (23) is in sliding connection with the inner wall of the transverse cavity (16), one side of the piston (23) away from a basic upright post (6) is in elastic connection with the inner wall of one side of the transverse cavity (16) away from the basic upright post (6) through an energizing spring (22), the piston (23) is conductive, a conducting strip (24) matched with the piston (23) is arranged at the inner top of the transverse cavity (16), a connecting rod (25) is fixedly connected with one side of the piston (23) close to the basic upright post (6), a baffle (17) is fixedly connected with one side of the connecting rod (25) away from the piston (23), the baffle (17) is in sliding connection with the inner wall of the transverse cavity (16), a plurality of through holes (18) are formed in the baffle (17), and color plates (19) are arranged in the through holes (18).

3. The prefabricated plate-type plus-spiral anchor combined foundation for the power transmission line according to claim 2, wherein: every horizontal chamber (16) is kept away from one side space and external all through intake pipe (20) intercommunication of basic stand (6), every horizontal chamber (16) is kept away from one side space of basic stand (6) and is all through outlet duct (21) intercommunication with the head space of corresponding installation chamber, all be equipped with the check valve on intake pipe (20) and outlet duct (21), every installation chamber and external intercommunication through a plurality of louvres (14).