CN115839182A - Single-pipe tower prestress steel strand reinforcing structure - Google Patents

Abstract

The invention relates to a single-tube tower prestress steel strand reinforcing structure, which comprises: the device comprises a plug-in type tower body provided with an upper mounting disc and a lower mounting disc, a lightning protection assembly arranged at the upper end of the upper mounting disc, a communication antenna group arranged on the plug-in type tower body, a prestressed steel strand arranged in an inner hole of the plug-in type tower body, a prestressed steel strand stabilizing device sleeved outside the prestressed steel strand, a prestressed steel strand upper end locking device, a mass damping device and an adjustable prestressed steel strand lower end locking device. The single-pipe tower prestress steel strand reinforcing structure is not limited by a small field, and has good effects of reducing wind vibration and the swing amplitude of the top of the tower body.

Description

Single-pipe tower prestress steel strand reinforcing structure

Technical Field

The invention relates to the technical field of communication towers, in particular to a prestressed steel strand reinforcing structure of a single-pipe tower.

Background

At present, a single-pipe tower is mostly adopted in domestic and foreign communication base stations, the whole body of the single-pipe tower is in a conical shape with a large lower part and a small upper part, the single-pipe tower is often divided into a plurality of sections, and the sections are connected in a plug-in mode or through flanges; the utility model of Chinese patent application No. CN 201720436360.5 relates to a plug-in type single-tube tower made of composite materials, which comprises a tower body and a bottom plate; the bottom of the tower body is fixedly connected with a bottom plate through a bolt, or the bottom of the tower body is fixedly connected with the bottom plate through integral forming; the tower body comprises a plurality of tower sections, and the upper end of the tower section below is inserted into the lower end of the tower section above in two adjacent tower sections. When the single-pipe tower is used, the joint of adjacent tower sections is easy to loosen so as to generate wind vibration, and the swing amplitude of the top of the tower body is increased to influence the communication quality; the tower body and the ground are reinforced by adopting a plurality of inclined support rods or inclined stay cables, which is helpful for reducing wind vibration and the swing amplitude of the top of the tower body, but has poor effect, and the inclined support rods or the inclined stay cables cannot be used for reinforcement in many occasions due to the limitation of small site; therefore, the design of a single-tube tower prestressed steel strand reinforcing structure which is not limited by a small field and has a good effect of reducing wind vibration and the swing amplitude of the top of a tower body becomes a problem to be solved urgently.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a single-tube tower prestressed steel strand reinforcing structure which is not limited by a small field and has good effects of reducing wind vibration and the swing amplitude of the top of a tower body.

The specific technical scheme of the invention is as follows:

a single-tube tower prestress steel strand reinforcing structure comprises: the device comprises a plug-in type tower body provided with an upper mounting disc and a lower mounting disc, a lightning protection assembly arranged at the upper end of the upper mounting disc, a communication antenna group arranged on the plug-in type tower body, a prestressed steel strand arranged in an inner hole of the plug-in type tower body, a prestressed steel strand stabilizing device sleeved outside the prestressed steel strand, a prestressed steel strand upper end locking device, a mass damping device and an adjustable prestressed steel strand lower end locking device.

Preferably, the prestressed steel strand upper end locking device comprises: the outer side of the upper locking seat is provided with a plurality of connecting rods connected with the upper end of the inner side wall of the plug-in type tower body, the upper frustum-shaped hole is arranged at the upper end of the upper locking seat, the small end of the upper frustum-shaped hole is communicated with the lower end of the upper locking seat, at least two outer sides of the upper locking seat are provided with conical surfaces matched with the taper of the upper frustum-shaped hole, the inner sides of the upper locking seat are provided with upper locking claws of arc surfaces matched with the radius of the prestressed steel strand, and two opposite ends of the upper locking seat are respectively provided with an upper locking block of a locking groove; the upper locking claws are circumferentially distributed along the side wall of the frustum-shaped hole, and the arc surface presses the upper side wall of the prestressed steel strand; the upper locking blocks press the upper ends of the upper locking claws, the locking grooves of the two upper locking blocks lock the upper ends of the side walls of the prestressed steel strands, and the two upper locking blocks are detachably connected through two upper locking screws which are respectively arranged on two sides of the prestressed steel strands; the upper mounting plate is detachably connected with the upper end of the plug-in type tower body.

Preferably, the mass damping device comprises: a plurality of mass damping assemblies circumferentially distributed along the upper locking seat; the mass damping assembly comprises: the anti-falling device comprises a support, a mass block, four pull rings, an inner tension spring and an outer tension spring, wherein the support is connected with the inner side periphery of the plug-in type tower body, and the lower end of the support is provided with an anti-falling plate; two ends of the inner tension spring are correspondingly connected with the outer side wall of the upper locking seat and the inner end of the mass block one by one through two pull rings, and two ends of the outer tension spring are correspondingly connected with the outer end of the mass block and the inner end of the support seat one by one through the other two pull rings.

Preferably, the device for locking the lower end of the prestressed steel strand comprises: the upper end of the guide base is provided with a guide counter bore, the outer side of the guide base is detachably connected with the lower end of the inner side wall of the plug-in type tower body, the outer side of the guide base is provided with a lower locking base provided with a guide flange matched with the guide counter bore, the lower locking base is arranged at the lower end of the lower locking base, the small end of the lower locking base is communicated with the upper end of the lower locking base, at least two outer sides of the lower locking base are provided with conical surfaces matched with the taper of the lower conical base, the inner side of the lower locking base is provided with a lower locking claw with an arc surface matched with the radius of a prestressed steel strand, two opposite ends of the lower locking claw are respectively provided with a lower locking block of a locking groove, a plurality of screw holes which are arranged on the guide flange and distributed along the circumferential direction of the lower locking base, a plurality of prestressed adjusting screws which are in one-to-one correspondence with the screw holes, and a plurality of through holes which are arranged on the bottom surface of the guide counter bore and are communicated with the lower end of the guide base; the lower locking claws are circumferentially distributed along the side wall of the lower frustum-shaped hole, and the arc surface presses the lower side wall of the prestressed steel strand; the lower locking blocks press the lower ends of the lower locking claws, the locking grooves of the two lower locking blocks lock the lower ends of the side walls of the prestressed steel strands, and the two lower locking blocks are detachably connected through two lower locking screws which are respectively arranged on two sides of the prestressed steel strands; the prestress adjusting screw penetrates through the through hole and is in threaded connection with the screw hole; the lower mounting disc is provided with a stepped through hole with the small end positioned at the upper side and a blank cap which is arranged in the large end of the stepped through hole and covers the prestress adjusting screw; the lower mounting disc is detachably connected with the lower end of the plug-in type tower body.

Preferably, the prestressed steel strand stabilizing device comprises: a plurality of stable covers that distribute from top to bottom and outside enclose and enclose the inboard side of plug-in type tower body and be connected, a plurality of covers are adorned in the wear-resisting cover of the hole of stable cover in the one-to-one correspondence outside the prestressing force steel strand wires.

Preferably, the lightning protection assembly comprises: the lightning rod is connected with the connecting disc in a detachable mode at the upper end of the upper mounting disc, the lower end of the lightning rod is connected with the connecting disc, and a plurality of fixing plates are distributed along the circumferential direction of the lightning rod and are respectively connected with the upper end of the connecting disc and the side wall of the lightning rod.

Preferably, the upper end of the lower mounting plate is provided with a plurality of supporting plates which are distributed along the circumferential direction of the plug-in type tower body and are respectively detachably connected with the upper end of the lower mounting plate and the outer side of the plug-in type tower body; the lower mounting disc is provided with mounting holes which are the same in number as the supporting plates and are arranged at intervals with the supporting plates.

Preferably, the outer diameter of the upper mounting disc is larger than that of the plug-in type tower body; the lower end of the upper mounting plate is provided with a plurality of reinforcing plates which are distributed along the circumferential direction of the plug-in type tower body and are detachably connected with the lower end of the upper mounting plate and the outer side of the plug-in type tower body respectively.

Preferably, the communication antenna group includes: a plurality of communication antennas arranged one above the other.

Compared with the prior art, the invention has the beneficial effects that: in the single-tube tower prestressed steel strand reinforcing structure, the prestressed steel strand is a stranded steel cable consisting of a plurality of high-strength steel wires and is subjected to stress relief treatment (stabilization treatment), and the prestressed steel strand is mainly characterized by high strength and good relaxation performance and is stiff and straight when unfolded; when the single-pipe tower prestress steel strand reinforcing structure is used, the arc surface of the upper locking claw presses the upper side wall of a prestress steel strand, the upper locking block presses the upper end of the upper locking claw, the locking grooves of the two upper locking blocks lock the upper end of the prestress steel strand side wall, the two upper locking blocks are in threaded connection through the two upper locking screws respectively arranged on two sides of the prestress steel strand, the arc surface of the lower locking claw presses the lower side wall of the prestress steel strand, the lower locking block presses the lower end of the lower locking claw, the locking grooves of the two lower locking blocks lock the lower end of the prestress steel strand side wall, the two lower locking blocks are in threaded connection through the two lower locking screws respectively arranged on two sides of the prestress steel strand, the prestress steel strand is locked and tensioned under the matching action of the conical surface of the upper locking claw and the upper frustum-shaped hole and the conical surface of the lower locking claw and the lower frustum-shaped hole by rotating the prestress steel adjusting screw, looseness is avoided, and the prestress steel strand is adjusted and ensured to have set prestress; the top of the plug-in type tower body can swing under the action of wind load, and because the motion of the mass block of the mass damping device lags behind the swing of the top of the plug-in type tower body, the energy is transferred from the plug-in type tower body to the mass damping device through the damping action of the mass block, the inner tension spring and the outer tension spring, so that the amplitude of the displacement of the top of the plug-in type tower body is reduced; the device is not limited by a small field, and has good effect of reducing wind vibration and the swing amplitude of the top of the tower body. The anti-falling plate can prevent the mass block from falling and improve the safety. The lower mounting disc is detachably connected with the lower end of the plug-in type tower body, the lower mounting disc is provided with a step through hole with a small end located at the upper side and a blank cap which is arranged in the large end of the step through hole and covers the prestress adjusting screw, and installation, prestress adjustment and dust prevention of the prestress adjusting screw are facilitated for the lower end locking device of the prestress adjustable steel strand. The stabilizing sleeve of the prestressed steel strand stabilizing device and the wear-resistant sleeve arranged in the inner hole of the stabilizing sleeve ensure that the prestressed steel strand is stable and does not shake and shift to be hung on other structures when stressed. A plurality of fixed plates that are connected respectively with connection pad upper end and lightning rod side wall are distributed to lightning rod circumference for ground connection lightning-arrest, make the lightning rod installation firm. A plurality of backup pads enclose to be dismantled respectively with the plug-in type tower body outside and be connected with lower mounting disc upper end, and a plurality of reinforcing plates enclose to be dismantled respectively with last mounting disc lower extreme and the plug-in type tower body outside and be connected, do benefit to the intensity and the rigidity that improve the plug-in type tower body, do benefit to and reduce wind and shake and tower body top swing. The lower mounting disc is provided with mounting holes, the number of which is the same as that of the support plates and the mounting holes are arranged at intervals of the support plates.

Drawings

FIG. 1 is a schematic of one embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a locking device and a mass damping device at the upper end of a prestressed steel strand;

fig. 3 is a structural schematic diagram of the lower end locking device of the prestress-adjustable steel strand.

In the figure: the anti-falling device comprises an upper mounting plate 1, a lower mounting plate 2, a plug-in type tower body 3, a prestressed steel strand 4, a prestressed steel strand upper end locking device 5, a mass damping device 6, an adjustable prestressed steel strand lower end locking device 7, a connecting rod 8, an upper locking seat 9, an upper frustum-shaped hole 10, an arc surface 11, an upper locking claw 12, an upper locking block 13, an upper locking screw 14, an anti-falling plate 15, a support 16, a mass block 17, a pull ring 18, an inner pull spring 19, an outer pull spring 20, a guide counter bore 21, a guide seat 22, a guide flange 23, a lower locking seat 24, a lower frustum-shaped hole 25, a lower locking claw 26, a lower locking block 27, a screw hole 28, a prestress adjusting screw 29, a through hole 30, a lower locking screw 31, a stepped through hole 32, a cover 33, a stabilizing sleeve 34, a wear-resistant sleeve 35, a connecting plate 36, a lightning rod 37, a fixing plate 38, a supporting plate 39, a reinforcing plate 40 and a communication antenna 41.

Detailed Description

The invention will be further described with reference to the drawings.

As shown in the attached figures 1, 2 and 3: a single-tube tower prestress steel strand reinforcing structure comprises: the device comprises a plug-in type tower body 3 provided with an upper mounting disc 1 and a lower mounting disc 2, a lightning protection assembly arranged at the upper end of the upper mounting disc 1, a communication antenna group arranged on the plug-in type tower body 3, a prestressed steel strand 4 arranged in an inner hole of the plug-in type tower body 3, a prestressed steel strand stabilizing device sleeved outside the prestressed steel strand 4, a prestressed steel strand upper end locking device 5, a mass damping device 6 and an adjustable prestressed steel strand lower end locking device 7.

Prestressing force steel strand wires upper end locking device 5 include: an upper locking seat 9 with four connecting rods 8 which are in threaded connection with the upper end of the inner side wall of the plug-in type tower body 3 on the outer side wall, an upper frustum-shaped hole 10 which is arranged on the upper end of the upper locking seat 9 and the small end of which is communicated with the lower end of the upper locking seat 9, upper locking claws 12 which are provided with conical surfaces which are matched with the taper of the upper frustum-shaped hole 10 on the outer sides and arc surfaces 11 which are matched with the radius of the prestressed steel stranded wires 4 on the inner sides, and upper locking blocks 13 with one locking groove (not shown) on two opposite ends; the upper locking claws 12 are circumferentially distributed along the side wall of the frustum-shaped hole, and the arc surface 11 presses the upper side wall of the prestressed steel strand 4; the upper locking blocks 13 press the upper ends of the upper locking claws 12, the locking grooves of the two upper locking blocks 13 lock the upper ends of the side walls of the prestressed steel strands 4, and the two upper locking blocks 13 are in threaded connection through two upper locking screws 14 respectively arranged on two sides of the prestressed steel strands 4; the upper mounting plate 1 is in threaded connection with the upper end of the plug-in type tower body 3.

The mass damping device 6 comprises: four mass damping components are uniformly distributed along the circumferential direction of the upper locking seat 9; the mass damping assembly comprises: a support 16 which is screwed with the inner side wall of the plug-in type tower body 3 and the lower end of which is provided with an integrated anti-falling plate 15, a mass block 17 which is arranged at the upper end of the anti-falling plate 15, four pull rings 18, an inner pull spring 19 and an outer pull spring 20; two ends of the inner tension spring 19 are correspondingly connected with the outer side wall of the upper locking seat 9 and the inner end of the mass block 17 one by one through two pull rings 18, and two ends of the outer tension spring 20 are correspondingly connected with the outer end of the mass block 17 and the inner end of the support 16 one by one through another two pull rings 18. The mass 17 is made of steel.

Adjustable prestress wire lower extreme locking device 7 include: the upper end of the tower body is provided with a guide counter bore 21, the outer side of the tower body is surrounded by a guide seat 22 in threaded connection with the lower end of the inner side of the plug-in type tower body 3, the outer side of the tower body is surrounded by a lower locking seat 24 provided with a guide flange 23 in clearance fit with the guide counter bore 21, the lower side of the lower locking seat 24 is provided with a lower frustum-shaped hole 25, the outer sides of the three lower frustum-shaped holes are provided with conical surfaces matched with the taper of the lower frustum-shaped hole 25, the inner side of the lower frustum-shaped hole is provided with a lower locking claw 26 with an arc surface 11 with the radius matched with the radius of the prestressed steel strand 4, two opposite ends of the lower locking block 27 are respectively provided with a locking groove (not shown), four screw holes 28 are arranged on the guide flange 23 and are uniformly distributed along the circumference of the lower locking seat 24, four prestressed adjusting screws 29 which are in one-to one correspondence with the screw holes 28, and four through holes 30 are arranged on the bottom surface of the counter bore of the guide counter bore 21 and are communicated with the lower end of the guide seat 22; the lower locking claws 26 are circumferentially distributed along the side wall of the lower frustum-shaped hole 25, and the arc surface 11 presses the lower side wall of the prestressed steel strand 4; the lower locking blocks 27 press the lower ends of the lower locking claws 26, the locking grooves of the two lower locking blocks 27 lock the lower ends of the side walls of the prestressed steel strands 4, and the two lower locking blocks 27 are in threaded connection through two lower locking screws 31 respectively arranged on two sides of the prestressed steel strands 4; the prestress adjusting screw 29 passes through the through hole 30 and is in threaded connection with the screw hole 28; the lower mounting plate 2 is provided with a step through hole 32 with the small end positioned at the upper side and a blank cap 33 which is arranged in the large end of the step through hole 32 and covers the prestress adjusting screw 29; the lower mounting plate 2 is in threaded connection with the lower end of the plug-in type tower body 3.

Prestressing force steel strand wires stabilising arrangement include: a plurality of stable sleeves 34 which are distributed up and down and the outer side of which is screwed with the inner side of the plug-in type tower body 3, and a plurality of wear-resistant sleeves 35 which are sleeved outside the prestressed steel strands 4 and are arranged in the inner holes of the stable sleeves 34 in a one-to-one correspondence manner.

The lightning protection assembly comprises: the lightning rod fixing device comprises a connecting disc 36 in threaded connection with the upper end of the upper mounting disc 1, lightning rods 37 in threaded connection with the connecting disc 36 at the lower end, and six fixing plates 38 which are uniformly distributed along the circumferential direction of the lightning rods 37 and are in threaded connection with the upper end of the connecting disc 36 and the side walls of the lightning rods 37 respectively.

The upper end of the lower mounting plate 2 is provided with eight supporting plates 39 which are uniformly distributed along the circumferential direction of the plug-in type tower body 3 and are respectively screwed with the upper end of the lower mounting plate 2 and the outer side of the plug-in type tower body 3; the lower mounting plate 2 is provided with mounting holes (not shown) in the same number as the support plates 39 and spaced apart from the support plates 39.

The outer diameter of the upper mounting disc 1 is larger than that of the plug-in type tower body 3; the lower end of the upper mounting disc 1 is provided with six reinforcing plates 40 which are circumferentially distributed along the plug-in type tower body 3 and are respectively screwed with the lower end of the upper mounting disc 1 and the outer side of the plug-in type tower body 3.

The communication antenna group comprises: three communication antennas 41 arranged one above the other.

In addition to the above embodiments, the technical features or technical data of the present invention may be reselected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and are within the protection scope of the present invention.

Claims (9)

1. A single-tube tower prestress steel strand reinforcing structure comprises: the plug-in type tower body of installing upper mounting disc and lower mounting disc is equipped with, arranges the lightning-arrest subassembly of upper mounting disc upper end in, adorns the communication antenna group on the plug-in type tower body, characterized by, single-pipe tower prestress wire reinforced structure still include: the device comprises a prestressed steel strand arranged in an inner hole of the plug-in type tower body, a prestressed steel strand stabilizing device sleeved outside the prestressed steel strand, a prestressed steel strand upper end locking device, a mass damping device and an adjustable prestressed steel strand lower end locking device.

2. The prestressed steel strand reinforcement structure of a single-tube tower as claimed in claim 1, wherein said prestressed steel strand upper end locking means comprises: the outer side of the upper locking seat is provided with a plurality of connecting rods connected with the upper end of the inner side periphery of the plug-in type tower body, the upper locking seat is arranged at the upper end of the upper locking seat, the small end of the upper locking seat is communicated with the lower end of the upper locking seat, at least two outer sides of the upper locking seat are provided with conical surfaces matched with the taper of the upper conical holes, the inner sides of the upper locking seat are provided with upper locking claws of arc surfaces matched with the radius of the prestressed steel stranded wire, and two opposite ends of the upper locking seat are respectively provided with an upper locking block of a locking groove; the upper locking claws are circumferentially distributed along the side wall of the frustum-shaped hole, and the arc surface presses the upper side wall of the prestressed steel strand; the upper locking blocks press the upper ends of the upper locking claws, the locking grooves of the two upper locking blocks lock the upper ends of the side walls of the prestressed steel strands, and the two upper locking blocks are detachably connected through two upper locking screws which are respectively arranged on two sides of the prestressed steel strands; the upper mounting plate is detachably connected with the upper end of the plug-in type tower body.

3. The single pipe tower prestressed steel strand reinforced structure of claim 2, wherein said mass damping means comprises: a plurality of mass damping assemblies circumferentially distributed along the upper locking seat; the mass damping assembly comprises: the anti-falling device comprises a support, a mass block, four pull rings, an inner tension spring and an outer tension spring, wherein the support is connected with the inner side periphery of the plug-in type tower body, and the lower end of the support is provided with an anti-falling plate; two ends of the inner tension spring are correspondingly connected with the outer side wall of the upper locking seat and the inner end of the mass block one by one through two pull rings, and two ends of the outer tension spring are correspondingly connected with the outer end of the mass block and the inner end of the support seat one by one through the other two pull rings.

4. The prestressed steel strand reinforcement structure of a single-tube tower as claimed in claim 1, 2 or 3, wherein said adjustable prestressed steel strand lower end locking means comprises: the upper end of the tower body is provided with a guide counter bore, the outer side of the guide base is detachably connected with the lower end of the inner side wall of the plug-in type tower body, the outer side of the guide base is provided with a lower locking base with a guide flange matched with the guide counter bore, the lower locking base is arranged at the lower end of the lower locking base, the small end of the lower locking base is communicated with the upper end of the lower locking base, at least two outer sides of the lower locking base are provided with conical surfaces matched with the taper of the lower conical base, the inner side of the lower locking base is provided with a lower locking claw with an arc surface matched with the radius of a prestressed steel strand, two opposite ends of the lower locking claw are respectively provided with a lower locking block of a locking groove, a plurality of screw holes which are arranged on the guide flange and are distributed along the circumferential direction of the lower locking base, a plurality of prestressed adjusting screws which are in one-to-one correspondence with the screw holes, and a plurality of through holes which are arranged on the bottom surface of the guide counter bore and are communicated with the lower end of the guide base; the lower locking claws are circumferentially distributed along the side wall of the lower frustum-shaped hole, and the arc surface presses the lower side wall of the prestressed steel strand; the lower locking blocks press the lower ends of the lower locking claws, the locking grooves of the two lower locking blocks lock the lower ends of the side walls of the prestressed steel strands, and the two lower locking blocks are detachably connected through two lower locking screws which are respectively arranged on two sides of the prestressed steel strands; the prestress adjusting screw penetrates through the through hole and is in threaded connection with the screw hole; the lower mounting disc is provided with a step through hole with a small end positioned at the upper side and a blank cap which is arranged in the large end of the step through hole and covers the prestress adjusting screw; the lower mounting disc is detachably connected with the lower end of the plug-in type tower body.

5. The single-tube tower prestressed steel strand reinforcing structure of claim 1, 2 or 3, wherein said prestressed steel strand stabilizing device comprises: a plurality of stable covers that distribute from top to bottom and outside enclose and enclose the inboard side of plug-in type tower body and be connected, a plurality of covers are adorned in the wear-resisting cover of the hole of stable cover in the one-to-one correspondence outside the prestressing force steel strand wires.

6. The prestressed steel strand reinforcing structure for single-pipe towers according to claim 1, 2 or 3, wherein the lightning protection assembly comprises: the lightning rod is connected with the connecting disc in a detachable mode at the upper end of the upper mounting disc, the lower end of the lightning rod is connected with the connecting disc, and a plurality of fixing plates are distributed along the circumferential direction of the lightning rod and are respectively connected with the upper end of the connecting disc and the side wall of the lightning rod.

7. The prestressed steel strand reinforcing structure of a single-tube tower as claimed in claim 1, 2 or 3, wherein a plurality of supporting plates are arranged at the upper end of the lower mounting plate, are distributed along the circumferential direction of the plug-in type tower body and are detachably connected with the upper end of the lower mounting plate and the outer side of the plug-in type tower body respectively; the lower mounting disc is provided with mounting holes which are the same in number as the supporting plates and are arranged at intervals with the supporting plates.

8. The prestressed steel strand reinforcing structure of a single-pipe tower as claimed in claim 1, 2 or 3, wherein the outer diameter of the upper mounting plate is larger than that of the plug-in type tower body; go up the mounting disc lower extreme and be equipped with a plurality ofly along plug-in type tower body circumference distribution and enclose the reinforcing plate that can dismantle the connection respectively with last mounting disc lower extreme and plug-in type tower body outside.

9. The prestressed steel strand reinforcing structure of a single-pipe tower as claimed in claim 1, 2 or 3, wherein said communication antenna group comprises: a plurality of communication antennas arranged one above the other.

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