CN200943329Y

CN200943329Y - High intensity prestressed concrete pole

Info

Publication number: CN200943329Y
Application number: CN 200620063586
Authority: CN
Inventors: 陈敏
Original assignee: 林兴
Priority date: 2006-08-30
Filing date: 2006-08-30
Publication date: 2007-09-05
Anticipated expiration: 2016-08-30

Abstract

The utility model discloses a high strength partial prestressed concrete power pole, which comprises the concrete pole body, wherein the concrete pole body is set with the inner spiral reinforcement and the outer spiral reinforcement extending along the direction of the length of the concrete pole body, and the inner spiral reinforcement and outer spiral reinforcement are distributed in the same axis; a plurality of non-prestressed reinforcement and prestressed reinforcement are distributed uniformly circularly along the concrete pole body between the inner and outer spiral reinforcement and in the internal wall of the inner spiral reinforcement. The utility model has the advantages of convenient installation, high strength of pole body and extensive use, and can be used for the layout of the electric transmission line.

Description

A kind of high strength partially prestressed concrete electric pole

Technical field

The utility model relates to a kind of electric pole, is meant especially to be used for a kind of high strength partial prestressing reinforced concrete pole that transmission line of electricity sets up.

Background technology

Along with the continuous newly-built of ultra-high-tension power transmission line and reconstruction, ultra-high-tension power transmission line is built required shaft tower material constantly to be increased; Traditional shaft tower material roughly is divided into ordinary concrete electric pole and steel structure iron tower, and there is the deficiency that the construction period is long, floor space is big, cost is high in steel structure iron tower; And the ordinary concrete electric pole exists poor mechanical property, deficiency that lever strength is not enough; At present, power construction needs a kind of price to be significantly less than steel structure iron tower, and mechanical strength is near the reinforced concrete pole of steel structure iron tower simultaneously.

Summary of the invention

The purpose of this utility model is exactly the deficiency that solves traditional electric pole insufficient strength, provide a kind of easy for installation, lever strength is high, use wide high strength partially prestressed concrete electric pole.

The purpose of this utility model is achieved in that a kind of high strength partially prestressed concrete electric pole, comprise the concrete body of rod, wherein: be provided with the internal layer spiral reinforcement and the outer spiral reinforcement that extend along concrete frame body length direction in the described concrete body of rod, internal layer spiral reinforcement and outer spiral reinforcement are coaxial inner conductor and distribute; Between inside and outside helical layer reinforcing bar, be provided with along equally distributed many nonprestressed reinforcements of concrete body of rod hoop and prestressed reinforcement with internal layer spiral reinforcement inwall.

Prestressed reinforcement described in the above-mentioned high strength partially prestressed concrete electric pole can be distributed between the inside and outside helical layer reinforcing bar, and nonprestressed reinforcement is distributed in internal layer spiral reinforcement inwall.

Nonprestressed reinforcement described in the above-mentioned high strength partially prestressed concrete electric pole also can be distributed between the inside and outside helical layer reinforcing bar, and prestressed reinforcement is distributed in internal layer spiral reinforcement inwall.

Nonprestressed reinforcement described in the above-mentioned high strength partially prestressed concrete electric pole is to lack 20% to 70% than prestressed reinforcement, and an end of nonprestressed reinforcement all is positioned at concrete body of rod bottom and stepped length is spaced apart for good, so both can guarantee the working strength of the body of rod, cost can economize in raw materials again.

Prestressed reinforcement described in the above-mentioned high strength partially prestressed concrete electric pole is good to account for 23% to 37% of nonprestressed reinforcement and the total cross sectional area of prestressed reinforcement.

After the utility model adopts said structure, utilize prestressed reinforcement, nonprestressed reinforcement to combine with spiral reinforcement, reach the crack resistance and the toughness that strengthen the concrete body of rod, improve the mechanical property of the concrete body of rod, can satisfy of the requirement of modern transmission line of electricity to the tower bar material, compared with prior art, has advantage easy for installation, that lever strength is high, use is wide.

Description of drawings

Below in conjunction with the embodiment in the accompanying drawing the utility model is described in further detail, but does not constitute any restriction of the present utility model.

Fig. 1 is the structural representation of a kind of specific embodiment of the utility model;

Fig. 2 is the structural representation of the another kind of specific embodiment of the utility model;

Fig. 3 is that cloth muscle of the present utility model launches schematic diagram.

The specific embodiment

Embodiment 1

Consult Fig. 1, shown in Figure 3, a kind of high strength partially prestressed concrete electric pole of the present utility model, comprise the concrete body of rod 1, be provided with the internal layer spiral reinforcement 2 and the outer spiral reinforcement 3 that extend along the concrete body of rod 1 length direction in the concrete body of rod 1, internal layer spiral reinforcement 2 and outer spiral reinforcement 3 are coaxial inner conductor and distribute; Between inside and outside helical

layer reinforcing bar

2,3, be provided with along equally distributed many prestressed reinforcements 5 of the concrete body of rod 1 hoop, be provided with along equally distributed many nonprestressed reinforcements 4 of the concrete body of rod 1 hoop at internal layer spiral reinforcement 2 inwalls, nonprestressed reinforcement 4 is shorter by 20% to 70% than prestressed reinforcement 5, and an end of nonprestressed reinforcement 4 all is positioned at the concrete body of rod 1 bottom and stepped length is spaced apart.

The diameter of prestressed reinforcement 5 is that 7.0mm, radical are 10 in the present embodiment, and the diameter of nonprestressed reinforcement 4 is that 10.7mm, radical are 14.Like this, total cross-sectional area of prestressed reinforcement 5 accounts for 23.4% of prestressed reinforcement 5 and nonprestressed reinforcement 4 total cross-sectional areas.

Embodiment 2

Consult Fig. 2, shown in Figure 3, another kind of high strength partially prestressed concrete electric pole of the present utility model, substantially the same manner as Example 1, not existing together is that nonprestressed reinforcement 4 is distributed between the inside and outside helical

layer reinforcing bar

2,3, and prestressed reinforcement 5 is distributed in internal layer spiral reinforcement 2 inwalls.

The diameter of prestressed reinforcement 5 is that 7.0mm, radical are 30 in the present embodiment, and the diameter of nonprestressed reinforcement 4 is that 10.7mm, radical are 22.Like this, total cross-sectional area of prestressed reinforcement 5 accounts for 36.9% of prestressed reinforcement 5 and nonprestressed reinforcement 4 total cross-sectional areas.

The scheme of comprehensive specific embodiment 1 and embodiment 2, big more if prestressed reinforcement 5 total cross-sectional areas account for the ratio of prestressed reinforcement 5 and nonprestressed reinforcement 4 total cross-sectional areas, then the crack resistance of reinforced concrete pole is strong more; If it is more little that prestressed reinforcement 5 total cross-sectional areas account for the ratio of prestressed reinforcement 5 and nonprestressed reinforcement 4 total cross-sectional areas, then the toughness of reinforced concrete pole is strong more.When the ratio that accounts for prestressed reinforcement 5 and nonprestressed reinforcement 4 total cross-sectional areas when prestressed reinforcement 5 total cross-sectional areas was in 23% arbitrary proportion in 37%, reinforced concrete pole possessed good crack resistance and toughness simultaneously.

Processing method of the present utility model is: will be positioned at the nonprestressed reinforcement 4 of internal layer spiral reinforcement 2 inboards or prestressed reinforcement 5 earlier and be banded in internal layer spiral reinforcement 2 inner surfaces and make the cage skeleton, to be banded in internal layer spiral reinforcement 2 external surfaces at nonprestressed reinforcement 4 between the inside and outside helical

layer reinforcing bar

2,3 or prestressed reinforcement 5 then, again outer spiral reinforcement 3 is banded in outside nonprestressed reinforcement 4 or the prestressed reinforcement 5, last concrete perfusion.

Claims

1. high strength partially prestressed concrete electric pole, comprise the concrete body of rod (1), it is characterized in that: be provided with the internal layer spiral reinforcement (2) and the outer spiral reinforcement (3) that extend along the concrete body of rod (1) length direction in the described concrete body of rod (1), internal layer spiral reinforcement (2) and outer spiral reinforcement (3) are coaxial inner conductor and distribute; Between inside and outside helical layer reinforcing bar (2,3), be provided with along the concrete body of rod (1) equally distributed many nonprestressed reinforcements of hoop (4) and prestressed reinforcement (5) with internal layer spiral reinforcement (2) inwall.

2. high strength partially prestressed concrete electric pole according to claim 1 is characterized in that: described prestressed reinforcement (5) is distributed between the inside and outside helical layer reinforcing bar (2,3), and nonprestressed reinforcement (4) is distributed in internal layer spiral reinforcement (2) inwall.

3. high strength partially prestressed concrete electric pole according to claim 1 is characterized in that: described nonprestressed reinforcement (4) is distributed between the inside and outside helical layer reinforcing bar (2,3), and prestressed reinforcement (5) is distributed in internal layer spiral reinforcement (2) inwall.

4. according to the arbitrary described high strength partially prestressed concrete electric pole of claim 1 to 3, it is characterized in that: described nonprestressed reinforcement (4) is shorter by 20% to 70% than prestressed reinforcement (5), and an end of nonprestressed reinforcement (4) all is positioned at the concrete body of rod (1) bottom and stepped length is spaced apart.

5. according to the arbitrary described high strength partially prestressed concrete electric pole of claim 1 to 3, it is characterized in that: the total cross sectional area of described prestressed reinforcement (5) accounts for 23% to 37% of nonprestressed reinforcement (4) and the total cross sectional area of prestressed reinforcement (5).