Anti-overturning fabricated foundation for electric pole and construction method of anti-overturning fabricated foundation

Abstract

The invention discloses an anti-overturning fabricated foundation for an electric pole and a construction method of the anti-overturning fabricated foundation, and belongs to the technical field of electric pole matched foundation construction. The technical problems that an existing chassis and chuck structure is poor in anti-overturning capacity, and an electric pole is prone to falling and inclining are solved. Comprising a chassis pile, a connecting rib, a chuck, a U-shaped screw, an electric pole and a backfill soil layer, the chassis pile comprises a pile foundation and a chassis table, the chassis table is installed on the top face of the pile foundation, a disc groove is formed in the top face of the chassis table, the vertical connecting rib is arranged on the chassis table along the outer side of the disc groove, and a vertical through hole is formed in the middle of the chuck; vertical through holes are formed in the disc groove, the connecting ribs are sleeved with the chucks through the vertical through holes, transverse through holes are formed in the left portions and the right portions of the chucks, the two ends of the U-shaped screws penetrate through the transverse through holes respectively, the electric pole is vertically installed on the disc groove, the chucks are installed on one side of the electric pole through the U-shaped screws, and backfill soil layers are arranged on the upper sides and the lower sides of the chucks. And the overturning resistance of the electric pole is improved. The method is used for electric pole matching foundation construction.

Description

Technical Field

[0001] The invention relates to an anti-overturning assembled foundation for an electric pole and a construction method thereof, belonging to the technical field of supporting foundation construction for electric poles. Background Art

[0002] At present, reinforced concrete poles are still one of the most widely used forms of pole tower structures in my country's power distribution infrastructure. Their main advantages include low steel consumption, low production cost, convenient operation during actual construction, and low engineering maintenance. However, in cold regions, due to the large-scale use of snow-melting agents every winter, the roots of concrete poles on the roadsides in urban areas develop honeycombs, rough surfaces, and falling blocks due to salt intrusion and freeze-thaw, which not only affects the appearance, but also greatly reduces the service life of the poles, posing a threat to the operation of urban distribution networks; in addition, some concrete poles are located in special pole positions such as rice fields, swamps, low-lying areas, and along rivers. Affected by irrigation and moisture and salt-alkali immersion in the soil, concrete poles are very likely to frost heave in winter due to the accumulation of water and freezing in the poles, resulting in fatal defects such as powdering, cracking, falling blocks, and steel bar corrosion at the roots of the poles, which are very likely to cause pole breakage accidents under strong winds and external forces, seriously threatening the safe and stable operation of distribution lines; and when assembling poles in frozen areas, due to the repeated freezing and melting of the foundation soil, problems such as freeze-pullout, thaw sinking, and tilting of the poles will occur, bringing great difficulties to the operation and maintenance of the distribution network.

[0003] The firmness of the pole is closely related to the power supply area. The existing chassis and chuck structure are split, which leads to weak anti-overturning ability of the pole, and technical problems such as pole falling over and tilting easily occur.

[0004] In summary, the existing chassis and chuck structures have weak anti-overturning capabilities, and are prone to technical problems such as poles falling over and tilting. Summary of the invention

[0005] The purpose of the present invention is to solve the technical problems that the above-mentioned existing chassis and chuck structures have weak anti-overturning ability and are prone to falling or tilting of poles, and further provide an anti-overturning assembled foundation for poles and a construction method thereof.

[0006] The technical solution of the present invention is an anti-overturning assembled foundation for an electric pole, which includes a chassis pile, connecting ribs, a chuck, a U-shaped screw, an electric pole and a backfill soil layer. The chassis pile includes a pile foundation and a chassis platform. The chassis platform is installed on the top surface of the pile foundation. The top surface of the chassis platform is provided with a disc groove. The chassis platform is provided with vertical connecting ribs along the outer side of the disc groove. A vertical through hole is provided in the middle of the chuck. The chuck is mounted on the connecting rib through the vertical through hole. The left and right parts of the chuck are provided with transverse through holes. Both ends of the U-shaped screw pass through the transverse through holes respectively. The electric pole is vertically installed on the disc groove. The chuck is installed on one side of the electric pole through the U-shaped screw. Backfill soil layers are provided on the upper and lower sides of the chuck.

[0007] As another improvement of the present invention, the pile foundation includes a steel cage and a concrete structure, a plurality of embedded bars are arranged on the upper middle side of the steel cage, a reserved hole is arranged in the middle of the chassis platform and is mounted on the outside of the embedded bars, and a mortar layer is arranged between the reserved hole and the embedded bars.

[0008] As another improvement of the present invention, the steel cage includes pile foundation main bars and pile foundation stirrups, the pile foundation stirrups are sleeved on the outside of the vertically arranged pile foundation main bars, the inside of the pile foundation stirrups are tied with cross pile foundation transverse bars, and vertical embedded bars are tied on the pile foundation transverse bars.

[0009] As another improvement of the present invention, the chassis platform is cast by precast concrete, the number of connecting ribs is two, and the angle between the two connecting ribs and the center line of the chassis platform is 90 degrees.

[0010] As another improvement of the present invention, the chuck is cast with precast concrete, and the outer surface of the chuck close to the pole is set to an arc shape, and the curvature of the outer surface of the chuck close to the pole is the same as the curvature of the outer surface of the pole.

[0011] As another improvement of the present invention, the chuck includes a steel bar structure, which includes a chuck main bar and a chuck stirrup, and the chuck stirrup is sleeved on the outside of the transversely arranged chuck main bar.

[0012] As another improvement of the present invention, a mortar layer is provided between the vertical through hole of the chuck and the connecting rib.

[0013] As another improvement of the present invention, a soil layer is compacted on the outer side of the pole.

[0014] The present invention also provides a construction method for an anti-overturning assembled foundation for an electric pole, comprising the following steps:

[0015] S1. Pile foundation construction, specifically, positioning - excavating the foundation pit - drilling - placing the steel cage - pouring concrete;

[0016] S2, chassis platform construction, put the prefabricated chassis platform on the embedded reinforcement, and pour mortar between the reserved holes and the embedded reinforcement;

[0017] S3, pole construction, install the prefabricated pole on the top surface of the tray groove of the chassis, and backfill and compact part of the excavated foundation pit soil;

[0018] S4, chuck construction, put the prefabricated chuck on the connecting rib, and install the chuck on one side of the pole through U-shaped screws, and pour mortar between the vertical through hole of the chuck and the connecting rib;

[0019] S5. Backfill construction: backfill and compact part of the excavated foundation pit soil, and compact the soil layer on the outside of the pole.

[0020] Beneficial effects of the present invention:

[0021] 1. The anti-overturning assembled foundation for an electric pole of the present invention enhances the anti-settling and anti-overturning properties of the bottom of the electric pole by means of on-site casting of chassis piles. The chassis platform and the chuck are both precast concrete, which shortens the construction period. The overall structure of the chassis platform is more stable after being connected with the chuck by connecting ribs. The electric pole utilizes the chassis piles designed at the bottom and the compacted backfill soil on the outside to form an overall structure, and the anti-overturning property of the electric pole is improved.

[0022] 2. A reserved hole is provided in the middle of the chassis platform and is sleeved on the outside of the embedded reinforcement. A mortar layer is provided between the reserved hole and the embedded reinforcement. A mortar layer is provided between the vertical through hole of the chuck and the connecting reinforcement. Through the above design, the chassis pile and the chuck of the anti-overturning assembled foundation for the electric pole of the present invention form an integrated structure, which shortens the construction period and improves the anti-overturning of the electric pole and the reliability of the overall foundation.

[0023] 3. The construction method of the anti-overturning assembled foundation for electric poles of the present invention has simple steps. The chassis platform and the chuck are both prefabricated and assembled on site, which shortens the construction period and improves the construction efficiency on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an anti-overturning assembled foundation for an electric pole of the present invention.

[0025] Figure 2 Schematic diagram of a top view of a chuck.

[0026] Figure 3 is a schematic side view of the chuck.

[0027] Figure 4 It is a schematic cross-sectional view of the chuck when it is installed.

[0028] Figure 5 It is a structural diagram of the chassis platform.

[0029] Figure 6 It is the longitudinal reinforcement diagram of pile foundation.

[0030] Figure 7 It is the transverse reinforcement diagram of pile foundation.

[0031] Figure 8 It is a schematic cross-sectional view of the chuck.

[0032] Fig. 9 It is a structural schematic diagram of the upper and lower chucks being installed in parallel.

[0033] Fig.10 It is a schematic diagram of the structure in which the upper and lower chucks are installed vertically. DETAILED DESCRIPTION

[0034] Specific implementation method 1: Combination Figures 1 to 5 The present embodiment is described. The present embodiment is an anti-overturning assembled foundation for an electric pole, which includes a chassis pile 1, connecting ribs 2, a chuck 3, U-shaped screws, an electric pole 4 and a backfill soil layer. The chassis pile 1 includes a pile foundation 11 and a chassis platform 12. The chassis platform 12 is installed on the top surface of the pile foundation 11. A disc groove 121 is provided on the top surface of the chassis platform 12. The chassis platform 12 is provided with vertical connecting ribs 2 along the outer side of the disc groove 121. The connecting ribs 2 are made of threaded steel bars. A vertical through hole 31 is provided in the middle of the chuck 3. The chuck 3 is mounted on the connecting rib 2 through the vertical through hole 31. Horizontal through holes 32 are provided on the left and right parts of the chuck 3. Both ends of the U-shaped screw pass through the horizontal through holes 32 respectively. The electric pole 4 is vertically installed on the disc groove 121. The chuck 3 is installed on one side of the electric pole 4 through the U-shaped screw. Backfill soil layers are provided on the upper and lower sides of the chuck 3. The concrete in the structure is made of RPC material and is used in cold areas.

[0035] The anti-subsidence and anti-overturning capabilities of the bottom of the pole are enhanced by casting chassis piles on site. The chassis platform and the clamp are both precast concrete, which shortens the construction period. The overall structure is more stable after the chassis platform is connected with the clamp through connecting ribs. The pole uses the chassis piles designed at the bottom and the compacted backfill soil on the outside to form an overall structure, which improves the anti-overturning capability of the pole.

[0036] Specific implementation method 2: Combination Figure 5 and Figure 7 This embodiment is described. The difference between this embodiment and the specific embodiment 1 is that the anti-overturning assembled foundation for an electric pole according to claim 1 is characterized in that the pile foundation 11 includes a steel cage 111 and a concrete structure. The concrete in the structure adopts RPC material and is used in cold areas. The shape of the concrete structure after solidification is the same as the external pile foundation hole. A plurality of embedded bars 112 are arranged on the upper middle side of the steel cage 111. The number of embedded bars 112 is two or four, and the four embedded bars are arranged in a square. A reserved hole 122 is arranged in the middle of the chassis platform 12 and is mounted on the outside of the embedded bars 112. A mortar layer is arranged between the reserved hole 122 and the embedded bars 112. Through the above design, the prefabricated chassis platform and the pile foundation of the anti-overturning assembled foundation for an electric pole in this embodiment are formed into an integrated structure, which improves the anti-overturning property of the electric pole and the reliability of the overall foundation while shortening the construction period. Other components and connection methods are the same as those in the specific embodiment 1.

[0037] Specific implementation method three: Combination Figure 5 and Figure 7This embodiment is described. The difference between this embodiment and the specific embodiment one is that the steel cage 111 includes pile foundation main reinforcement 113 and pile foundation stirrups 114. The pile foundation stirrups 114 are mounted on the outside of the vertically arranged pile foundation main reinforcement 113. The inside of the pile foundation stirrups 114 is tied with cross-shaped pile foundation transverse reinforcements 115. The pile foundation transverse reinforcements 115 are arranged in two layers, upper and lower. The two layers of transverse reinforcements 115 are used to fix and tie the embedded reinforcement 112, which has stronger stability. The pile foundation transverse reinforcements 115 are tied with vertical embedded reinforcements 112. The design of embedded reinforcements 112 forms an integrated structure of the prefabricated chassis platform and the pile foundation of the anti-overturning assembled foundation for the pole in this embodiment, which shortens the construction period and improves the anti-overturning of the pole and the reliability of the overall foundation. Other components and connection methods are the same as those in the specific embodiments one or two.

[0038] Specific implementation method four: Combination Figure 5 and Fig.10 This embodiment is described. The difference between this embodiment and the first embodiment is that the chassis platform 12 is cast with precast concrete. The concrete in the structure is made of RPC material and is used in cold regions. There are two connecting ribs 2, and the angle between the two connecting ribs 2 and the center line of the chassis platform 12 is 90 degrees. When two vertical chucks need to be installed, it is achieved by setting two connecting ribs 2 with an angle of 90 degrees. Adjustments are made according to the construction requirements on site to enhance the practicality of this embodiment. When the soil environment on site is loose, it can be used Fig. 9 The design in the embodiment uses upper and lower two-layer chucks for installation to enhance the overall stability and reliability of the device. Other components and connection methods are the same as any one of the specific implementation modes 1 to 3.

[0039] Specific implementation method five: Combination Figure 4 and Figure 8 This embodiment is described. The difference between this embodiment and the specific embodiment 1 is that the chuck 3 is cast with precast concrete, and the outer surface of the chuck 3 is set to an arc shape near the pole 4. The curvature of the outer surface of the chuck 3 near the pole 4 is the same as the curvature of the outer surface of the pole 4. During the installation process, the arc-shaped concave part of the chuck hugs one side of the pole, and then is assembled and connected by U-shaped screws. The chuck is fixed tightly against the pole, which is easy to install, has a short construction time, high safety performance, and low cost. The other components and connection methods are the same as any one of the specific embodiments 1 to 4.

[0040] Specific implementation method six: Combination Figure 8This embodiment is described. The difference between this embodiment and the first embodiment is that the chuck 3 includes a steel bar structure, which includes a chuck main bar 33 and a chuck hoop bar 34. The chuck hoop bar 34 is sleeved on the outside of the transversely arranged chuck main bar 33. The internal steel bar structure is designed in this way, so that the chuck not only has the advantages of strong attachment, corrosion resistance, temperature difference resistance, and crack resistance, but also has long-term anti-tilting performance. Other components and connection methods are the same as any one of the first to fifth embodiments.

[0041] Specific implementation method seven: Combination Figures 1 to 5 This embodiment is described. The difference between this embodiment and the specific embodiment one is that a mortar layer is provided between the vertical through hole 31 of the chuck 3 and the connecting rib 2. The connecting rib 2 adopts threaded steel bars, which have better stability after pouring mortar, and enhances the stability of the connection with the vertical through hole. A mortar layer is provided between the vertical through hole of the chuck and the connecting rib. Through the above design, the prefabricated chassis platform and the chuck of the anti-overturning assembled foundation for an electric pole of the present invention are formed into an integrated structure, which improves the anti-overturning of the electric pole and the reliability of the overall foundation while shortening the construction period, and the concrete in the structure adopts RPC material, which is used in cold areas. The other components and connection methods are the same as any one of the specific embodiments one to six.

[0042] Specific implementation method eight: Combination Figures 1 to 5 This embodiment is described. The difference between this embodiment and the first embodiment is that a soil layer 5 is compacted on the outside of the pole 4. The purpose of this design is to enhance the structural stability of the anti-overturning assembled foundation for the pole in this embodiment. The other components and connection methods are the same as any one of the first to seventh embodiments.

[0043] Specific implementation method nine: Combination Figures 1 to 10 This embodiment describes a construction method of an anti-overturning assembled foundation for an electric pole, comprising the following steps:

[0044] S1. Pile foundation construction, specifically, positioning by laying out the lines - excavating the foundation pit - drilling - placing the steel cage 111 - pouring concrete; after excavating the foundation pit, a casing for making the hole is placed, and a construction process is selected according to the design size. The process of digging or drilling can be used for construction. After cleaning the hole, the hole is formed, and after placing the steel cage, the pile foundation is poured by pouring concrete; the concrete uses RPC material and is used in cold areas;

[0045] S2, construction of chassis platform 12, the prefabricated chassis platform 12 is mounted on the embedded reinforcement 112, and mortar is poured between the reserved hole 122 and the embedded reinforcement 112;

[0046] S3, construction of the electric pole 4, installing the prefabricated electric pole 4 on the top surface of the tray groove 121 of the chassis platform 12, and backfilling and compacting a part of the excavated foundation pit soil;

[0047] S4, construction of the chuck 3, the prefabricated chuck 3 is mounted on the connecting rib 2, and the chuck 3 is installed on one side of the pole 4 by means of a U-shaped screw, and mortar is poured between the vertical through hole 31 of the chuck 3 and the connecting rib 2;

[0048] S5, backfill construction, backfill and compact a part of the excavated foundation pit soil, and compact the soil layer 5 on the outside of the pole 4.

[0049] The anti-settlement and anti-overturning properties of the bottom of the pole are enhanced by casting chassis piles on site. Both the chassis platform and the chuck are precast concrete, which shortens the construction period. The overall structure of the chassis platform is more stable after being connected by connecting ribs and chucks. The pole uses the chassis piles designed at the bottom and the external compacted backfill soil to form an overall structure, and the anti-overturning property of the pole is improved. The middle part of the chassis platform is provided with a reserved hole that is sleeved on the outside of the embedded ribs, and a mortar layer is provided between the reserved hole and the embedded ribs. A mortar layer is provided between the vertical through hole of the chuck and the connecting ribs. Through the above design, the chassis pile and the chuck of the anti-overturning assembled foundation for the pole of the present invention are formed into an integrated structure, which shortens the construction period and improves the anti-overturning property of the pole and the reliability of the overall foundation. The construction method is simple in steps, and both the chassis platform and the chuck are prefabricated, assembled and constructed on site, which shortens the construction period and improves the construction efficiency on site.

[0050] The present invention has been disclosed as above with preferred implementation cases, but it is not used to limit the present invention. Any technician familiar with the profession can make slight changes or modifications to equivalent implementation cases with equivalent changes by using the above-disclosed structures and technical contents without departing from the scope of the technical solution of the present invention, which still fall within the scope of the technical solution of the present invention.

Claims

1. An anti-overturning assembled foundation for an electric pole, characterized in that The invention comprises a chassis pile (1), connecting ribs (2), a chuck (3), a U-shaped screw, an electric pole (4) and a backfill soil layer. The chassis pile (1) comprises a pile foundation (11) and a chassis platform (12). The chassis platform (12) is installed on the top surface of the pile foundation (11). A trough (121) is arranged on the top surface of the chassis platform (12). The chassis platform (12) is provided with vertical connecting ribs (2) along the outer side of the trough (121). The chuck (3) is provided in the middle part. A vertical through hole (31) is provided, and the chuck (3) is mounted on the connecting rib (2) through the vertical through hole (31). The left and right parts of the chuck (3) are both provided with transverse through holes (32), and both ends of the U-shaped screws pass through the transverse through holes (32) respectively. The electric pole (4) is vertically installed on the disc groove (121), and the chuck (3) is installed on one side of the electric pole (4) through the U-shaped screws. Backfill soil layers are provided on the upper and lower sides of the chuck (3).

2. The anti-overturning assembled foundation for an electric pole according to claim 1, characterized in that: The pile foundation (11) comprises a steel cage (111) and a concrete structure, wherein a plurality of embedded bars (112) are arranged on the upper middle side of the steel cage (111), a reserved hole (122) is arranged in the middle of the chassis platform (12) and is sleeved on the outer side of the embedded bars (112), and a mortar layer is arranged between the reserved hole (122) and the embedded bars (112).

3. The anti-overturning assembled foundation for electric poles according to claim 2, characterized in that: The steel cage (111) comprises pile foundation main reinforcement (113) and pile foundation stirrups (114), wherein the pile foundation stirrups (114) are sleeved on the outside of the vertically arranged pile foundation main reinforcement (113), the inside of the pile foundation stirrups (114) are tied with cross-shaped pile foundation transverse reinforcements (115), and the pile foundation transverse reinforcements (115) are tied with vertical embedded reinforcements (112).

4. The anti-overturning assembled foundation for an electric pole according to claim 2, characterized in that: The chassis platform (12) is cast by precast concrete, the number of the connecting ribs (2) is two, and the angle between the center line of the two connecting ribs (2) and the chassis platform (12) is 90 degrees.

5. The anti-overturning assembled foundation for electric poles according to claim 1, characterized in that: The chuck (3) is cast using precast concrete, and the outer surface of the chuck (3) on the side close to the pole (4) is arranged in an arc shape, and the curvature of the outer surface of the chuck (3) on the side close to the pole (4) is the same as the curvature of the outer surface of the pole (4).

6. The anti-overturning assembled foundation for an electric pole according to claim 1, characterized in that: The chuck (3) comprises a steel bar structure, wherein the steel bar structure comprises a chuck main bar (33) and a chuck stirrup (34), wherein the chuck stirrup (34) is sleeved on the outside of the transversely arranged chuck main bar (33).

7. The anti-overturning assembled foundation for an electric pole according to claim 1, characterized in that: A mortar layer is provided between the vertical through hole (31) of the chuck (3) and the connecting rib (2).

8. The anti-overturning assembled foundation for an electric pole according to claim 1, characterized in that: The outer side of the electric pole (4) is compacted with a soil layer (5).

9. A construction method for an anti-overturning assembled foundation for an electric pole according to claim 1, characterized in that: The following steps are involved: S1, pile foundation construction, specifically, positioning - excavating the foundation pit - drilling - placing the steel cage (111) - pouring concrete; S2, construction of the chassis platform (12), placing the prefabricated chassis platform (12) on the embedded reinforcement (112), and pouring mortar between the reserved hole (122) and the embedded reinforcement (112); S3, construction of the electric pole (4), installing the prefabricated electric pole (4) on the top surface of the tray groove (121) of the chassis platform (12), and backfilling and compacting a part of the excavated foundation pit soil; S4, construction of the chuck (3), the prefabricated chuck (3) is mounted on the connecting rib (2), and the chuck (3) is installed on one side of the pole (4) by means of a U-shaped screw, and mortar is poured between the vertical through hole (31) of the chuck (3) and the connecting rib (2); S5, backfill construction, backfill and compact a portion of the excavated foundation pit soil, and compact the soil layer (5) outside the electric pole (4).

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