CN211007876U

CN211007876U - CFRP reinforced concrete pole

Info

Publication number: CN211007876U
Application number: CN201921855909.XU
Authority: CN
Inventors: 杨月红; 刘晓明; 张栋翔; 孙常明; 贺瑞敏
Original assignee: Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
Current assignee: Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-07-14
Anticipated expiration: 2029-10-30

Abstract

A CFRP reinforced concrete pole comprises a pole body, wherein a base is arranged at the lower end of the pole body; the rod body comprises an inner frame body formed by CFRP (carbon fiber reinforced plastics) ribs and a concrete layer poured and wrapped on the inner frame body; the inner frame body comprises vertical main ribs, inner steel hoops, spiral ribs and fixed clamping blocks; the inner steel hoop is provided with a plurality of annular structures, a plurality of fixed clamping blocks are uniformly distributed outside the outer ring of the inner steel hoop, the vertical main rib is inserted into the fixed clamping blocks and connected with the fixed clamping blocks, the spiral rib is arranged along the spiral extension of the length direction of the vertical main rib, and the inner steel hoop is arranged along the length direction of the vertical main rib in the inner ring of the spiral rib. The utility model provides a pole simple to operate, structural strength is high, and weight is lighter, long service life.

Description

CFRP reinforced concrete pole

Technical Field

The utility model relates to an electric power transmission facility technical field, in particular to CFRP reinforced concrete pole.

Background

With the gradual and compact construction of power grids, the working performance of various on-service power transmission lines is directly related to the development of national economy, most of the existing various transmission and distribution power supply lines are erected by concrete poles (cement poles), and the safety of the existing various transmission and distribution power supply lines is the key for ensuring the normal operation of the power transmission lines. The durability of traditional concrete pole under outdoor environment erosion can not be guaranteed, the main reason derives from the reinforcing bar corrosion, greatly reduced the service life of pole, serious easy emergence destroys the condition that causes the outage suddenly, brings great inconvenience for people's production life, causes huge loss of property and casualties accident. In addition, most of the existing electric poles are simple straight poles which are inserted into the lower end of the ground, and sometimes, because the inserting depth is limited, the electric poles are easy to topple when being subjected to external force, so that danger is caused.

The CFRP is a carbon fiber reinforced composite material, has the characteristics of high strength, low density, difficult corrosion, good durability and the like, and has the following advantages: (1) the corrosion resistance of the structure is improved; (2) the bearing capacity of the structure is improved; (3) the ductility and other shock resistance of the structure are enhanced; (4) this kind of arrangement of reinforcement mode has combined the advantage of CFRP muscle and traditional reinforcing bar, the effectual reinforcing bar corrosion scheduling problem that has prevented.

China with application number CN201420387581.4 specially favorable for 2014, 7 months and 15 discloses an annular FRP reinforced concrete electric pole, which adopts annular FRP ribs and cross ribs. The FRP reinforced concrete pole of this scheme has improved the durability of pole to a certain extent, but the arrangement of reinforcement form is complicated and unstable, is difficult for the construction.

China special for 2018, 5 month and 11 days with application number CN201810451197.9 discloses an FRP thin-wall electric pole and a manufacturing method thereof, wherein an FRP material is manufactured into an integrated hollow structure through a winding forming process. The FRP thin-wall electric pole improves the durability and the wind resistance of the electric pole to a certain extent, but the flange plate at the bottom of the pole is complicated in reinforcement arrangement and long in construction period.

The pole that has now is installed inconveniently, and structural stability is poor. The prior art has more descriptions about FRP concrete materials, but the research about the method for manufacturing the electric pole by using CFRP bars instead of reinforcing bars is less.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a simple to operate, structural strength is high, and the weight is lighter CFRP reinforced concrete pole can improve the relevant index and the durability of bearing of pole effectively, prolongs the labour life-span of pole.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

a CFRP reinforced concrete pole comprises a pole body, wherein a base is arranged at the lower end of the pole body; the rod body comprises an inner frame body formed by CFRP (carbon fiber reinforced plastics) ribs and a concrete layer poured and wrapped on the inner frame body; the inner frame body comprises vertical main ribs, inner steel hoops, spiral ribs and fixed clamping blocks; the inner steel hoop is provided with a plurality of annular structures, a plurality of fixed clamping blocks are uniformly distributed outside the outer ring of the inner steel hoop, the vertical main rib is inserted into the fixed clamping blocks and connected with the fixed clamping blocks, the spiral rib is arranged along the spiral extension of the length direction of the vertical main rib, and the inner steel hoop is arranged along the length direction of the vertical main rib in the inner ring of the spiral rib.

Further, the base is including cup jointing a plurality of annular bottom plate of the body of rod lower extreme, and the radius of a plurality of annular bottom plate from top to bottom increases progressively the setting, is evenly distributed's a plurality of stiffening rib connection through the center pin around the body of rod between two adjacent annular bottom plates, evenly installs a plurality of crab-bolt on the annular bottom plate of bottommost.

Further, the rod body is of a hollow columnar structure, a lightning rod is vertically arranged at the top of the rod body, a grounding device is arranged at the bottom of the rod body, and a grounding lead electrically connecting the lightning rod with the grounding device is arranged in the rod body.

Further, the body of rod is conical columnar structure, the radius of interior ferrule by body of rod top to body of rod bottom grow gradually.

Furthermore, the vertical main ribs are 10-14 and are uniformly distributed around the central shaft of the rod body.

Further, the thickness of the concrete layer is 40-60 mm.

Furthermore, the distance between the spiral ribs is 50-110 mm.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

1. the utility model can better solve the problem of steel bar corrosion by adopting the inner frame body composed of CFRP bars, thereby improving the durability and the service life of the electric pole; by arranging the vertical main ribs, the structural strength of each position of the rod body can be reasonably controlled so as to adapt to the structural requirements of transportation and installation; by arranging the spiral ribs, the strength of the side wall of the electric pole is effectively enhanced, the electric pole is not easy to damage even if being impacted, and the product quality is improved; the vertical main reinforcement and the inner steel hoop are connected and fixed conveniently by arranging the fixing clamping block on the inner steel hoop to play a role in positioning.

2. The utility model discloses a set up the base, stability when can guaranteeing the body of rod installation. The base can be firmer by arranging the annular bottom plates with the radiuses increasing from top to bottom, and the structures between the annular bottom plates can be firmer by arranging the reinforcing ribs; the base installation of being convenient for can be through evenly installing a plurality of crab-bolt on the annular bottom plate of bottommost, further play the anchor effect.

3. The utility model discloses a set up lightning rod and earthing device, can reach the needs of safety lightning protection.

4. The utility model discloses the body of rod adopts big end down's structure, has promoted the stability of the body of rod.

Drawings

Fig. 1 is a schematic structural view of a CFRP reinforced concrete pole of the present invention.

Fig. 2 is a schematic structural view of the inner frame body.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a schematic structural view of the base.

Wherein, labeled in the figures: 1-a rod body; 2-a base; 3-a concrete layer; 4-vertical main reinforcement; 5-inner steel hoop; 6-spiral ribs; 7-fixing the fixture block; 8-a ring-shaped bottom plate; 9-reinforcing ribs; 10-anchor bolts; 11-a lightning rod; 12-a grounding device; 13-ground conductor.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 4, a CFRP reinforced concrete pole includes a pole body 1, a base 2 is disposed at a lower end of the pole body 1; the rod body 1 comprises an inner frame body formed by CFRP (carbon fiber reinforced plastics) ribs and a concrete layer 3 poured and wrapped on the inner frame body, and the thickness of the concrete layer 3 is 40-60 mm; the inner frame body comprises vertical main ribs 4, inner steel hoops 5, spiral ribs 6 and fixed fixture blocks 7; interior steel hoop 5 is equipped with a plurality of, and arbitrary interior steel hoop 5 be loop configuration and including the outer evenly distributed of steel hoop 5's outer loop have a plurality of fixed fixture block 7, and fixed fixture block 7 specifically can be for the U-shaped structure to vertical main muscle 4 inserts in the fixed fixture block 7 and is connected with fixed fixture block 7, and the length direction heliciform extension setting of vertical main muscle 4 is followed to spiral muscle 6, and interior steel hoop 5 sets up in the inner ring of spiral muscle 6 along the length direction of vertical main muscle 4. The number of the vertical main ribs 4 is 10-14, and the vertical main ribs are uniformly distributed around the central shaft of the rod body 1, and the number of the vertical main ribs 4 is 12 in the embodiment and the vertical main ribs are uniformly distributed around the central shaft of the rod body 1; the rod body 1 is formed by pouring concrete and an inner frame body in a steel mould of the electric pole.

The utility model can reasonably control the structural strength of each position of the rod body 1 by arranging the vertical main ribs 4 so as to adapt to the structural requirements of transportation and installation; by arranging the spiral ribs 6, the strength of the side wall of the electric pole is effectively enhanced, the electric pole is not easy to damage even if being impacted, and the product quality is improved; the vertical main reinforcement 4 and the inner steel hoop 5 are connected and fixed conveniently by arranging the fixed clamping block 7 on the inner steel hoop 5 to play a role in positioning.

Referring to fig. 4, the base 2 includes a plurality of annular bottom plates 8 sleeved on the lower end of the rod body 1, the radii of the plurality of annular bottom plates 8 are gradually increased from top to bottom, two adjacent annular bottom plates 8 are connected by a plurality of reinforcing ribs 9 uniformly distributed around the central axis of the rod body 1, and a plurality of anchor bolts 10 are uniformly installed on the annular bottom plate 8 at the bottom end. The base 2 can be firmer by arranging the annular bottom plates 8 with the radius increasing from top to bottom, and the structure between the annular bottom plates 8 can be firmer by arranging the reinforcing ribs 9; the installation of the base 2 can be facilitated by uniformly installing a plurality of anchor bolts 10 on the annular bottom plate 8 at the bottommost end, and the anchoring effect is further achieved. During construction, the rod body 1 is sleeved on the base 2, concrete is poured around the base 2 for fixation, the rod body 1 and the base 2 are made to have better overall firmness, and the base 2 is connected with the ground more firmly and the whole base 2 is more stable.

The body of rod 1 is hollow columnar structure to alleviate the weight of pole, the top and the bottom of pole are capped with cement mortar, in order to reach the needs of safe lightning protection, the vertical lightning rod 11 that is provided with in the top of the body of rod 1, the bottom of the body of rod 1 is provided with earthing device 12, wears to be equipped with in the body of rod 1 with the earthing wire 13 of lightning rod 11 with earthing device 12 electricity is connected, earthing wire 13 adopts the steel strand wires to make.

The body of rod 1 is conical columnar structure, and the radius of interior ferrule 5 is by the body of rod 1 top to the 1 bottom grow gradually of the body of rod, adopts big end down's structure, has promoted the stability of the body of rod 1.

The distance between the spiral ribs 6 meets the requirement that the minimum distance required by concrete pouring is larger than or equal to 50mm, and the distance between the spiral ribs 6 is preferably 50-110 mm.

The whole atress condition to the pole is analyzed, because the atress that is close to body of rod 1 upper end is less relatively, and the atress that is close to body of rod 1 lower extreme is then relatively great, and consequently vertical main muscle 4 flushes near the tip of the body of rod 1 lower extreme, and wherein the length of most vertical main muscle 4 equals with the length of the body of rod 1 basically, and the length of the vertical main muscle 4 of a small part can be shortened according to actual conditions, saves the material under the prerequisite that satisfies pole atress structural requirement. In actual transportation and use, body of rod 1 upper end position and lower extreme position are the position that takes place to collide with more easily usually, and to body of rod 1 upper end and lower extreme position, the pitch of spiral muscle 6 is great relatively, can promote the structural strength of lower extreme on the body of rod 1 to a certain extent, reduces the produced damage degree of colliding with. The utility model discloses a specific embodiment, the height of the body of rod 1 is 10m, and the diameter is 190mm, and wall thickness 50mm, 4 protective layers 17mm of vertical king-rod, concrete strength grade are C45. The inner frame body reinforcing bars are all CFRP bars with the tensile strength of 2310.3MPa, the vertical main bars 4 are 12 CFRP bars with the diameter of 12mm, wherein two vertical main bars 4 are 4000mm long, two vertical main bars 4 are 7000mm long, and the other eight vertical main bars 4 are 9980mm long; the inner steel hoops 5 adopt CFRP ribs with the diameter of 6mm, and the space between the inner steel hoops 5 is 500 mm; the spiral muscle 6 adopts the diameter to be 4 mm's CFRP muscle, and each 1480mm within range interval is 50mm in the upper and lower both ends of the body of rod 1, and the middle part 7000mm within range interval is 100 mm. The CFRP rib is a novel concrete structure reinforcing bar material, and has the advantages of high tensile strength, linear elasticity, light weight, strong corrosion resistance, economy and environmental protection. Arrange it in reinforced concrete structure, can improve the bearing capacity of structure, the effectual reinforcing bar corrosion scheduling problem that prevents.

The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.

Claims

1. A CFRP reinforced concrete pole comprises a pole body, wherein a base is arranged at the lower end of the pole body; the rod body comprises an inner frame body formed by CFRP (carbon fiber reinforced plastics) ribs and a concrete layer poured and wrapped on the inner frame body; the method is characterized in that: the inner frame body comprises vertical main ribs, inner steel hoops, spiral ribs and fixed clamping blocks; the inner steel hoop is provided with a plurality of annular structures, a plurality of fixed clamping blocks are uniformly distributed outside the outer ring of the inner steel hoop, the vertical main rib is inserted into the fixed clamping blocks and connected with the fixed clamping blocks, the spiral rib is arranged along the spiral extension of the length direction of the vertical main rib, and the inner steel hoop is arranged along the length direction of the vertical main rib in the inner ring of the spiral rib.

2. A CFRP reinforced concrete pole as recited in claim 1, wherein: the base is including cup jointing a plurality of annular bottom plate of the body of rod lower extreme, and the radius of a plurality of annular bottom plate from top to bottom increases progressively the setting, is evenly distributed's a plurality of stiffening rib connection through the center pin around the body of rod between two adjacent annular bottom plates, evenly installs a plurality of crab-bolt on the annular bottom plate of bottom.

3. A CFRP reinforced concrete pole as recited in claim 1, wherein: the lightning rod is of a hollow columnar structure, a lightning rod is vertically arranged at the top of the rod body, a grounding device is arranged at the bottom of the rod body, and a grounding lead electrically connecting the lightning rod and the grounding device is arranged in the rod body.

4. A CFRP reinforced concrete pole as recited in claim 1, wherein: the rod body is a conical columnar structure, and the radius of the inner steel hoop is gradually increased from the top of the rod body to the bottom of the rod body.

5. A CFRP reinforced concrete pole as recited in claim 1, wherein: the vertical main ribs are 10-14 and are uniformly distributed around the central shaft of the rod body.

6. A CFRP reinforced concrete pole as recited in claim 1, wherein: the thickness of the concrete layer is 40-60 mm.

7. A CFRP reinforced concrete pole as recited in claim 1, wherein: the pitch of the spiral ribs is 50-110 mm.