CN113627822A - Shared pole tower safe use checking calculation method based on boundary discrimination - Google Patents

Shared pole tower safe use checking calculation method based on boundary discrimination Download PDF

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CN113627822A
CN113627822A CN202110981695.6A CN202110981695A CN113627822A CN 113627822 A CN113627822 A CN 113627822A CN 202110981695 A CN202110981695 A CN 202110981695A CN 113627822 A CN113627822 A CN 113627822A
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高秀云
王莹
樊沃周
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Abstract

The invention discloses a shared pole tower safe use checking calculation method based on boundary discrimination, belongs to the technical field of communication and power line sharing, and aims to solve the problem that in the prior art, safety grade evaluation cannot be carried out on whether a pole tower can be safely used or not after mobile communication equipment is additionally arranged on the existing pole tower. It includes: selecting communication equipment installed on a shared tower; the communication device includes: optical cables, communication base stations and mobile antennas; respectively calculating the horizontal load and the vertical load of the original shared tower; respectively calculating the horizontal load and the vertical load of the shared tower after the communication equipment is added; and establishing a safety risk function according to the horizontal load and the vertical load of the shared tower added with the communication equipment, and judging the safety level of the shared tower according to the safety risk function and the safe use boundary condition of the shared tower. The method is used for judging the safe use of the shared tower to which the mobile communication equipment is to be added.

Description

Shared pole tower safe use checking calculation method based on boundary discrimination
Technical Field
The invention relates to a safe use checking calculation method for a shared tower, and belongs to the technical field of communication and power line sharing.
Background
With the rapid development of mobile communication technology network construction, the requirements of mobile communication networks on capacity and coverage are continuously increased, the number of communication base stations is increased, and the installation of communication equipment is a significant problem for communication companies. Communication companies can install communication equipment on the power tower, attach communication facilities such as optical cables, communication base stations and mobile antennas on the power transmission line body, enable power channel resources to be recycled and comprehensively utilized, and the power transmission line body becomes a shared tower. The shared tower can effectively avoid the waste of power enterprise resources, improve the resource utilization rate, greatly save land resources and avoid repeated construction and repeated investment for social public resources due to the multiple use of one tower.
The shared tower construction generally comprises two types: one method is to plan the sharing of the mobile communication equipment and the power transmission line in the early stage of the tower construction, and the design and planning of the tower construction in the early stage of the tower construction can fully consider the layout requirement of the mobile communication equipment and then design the tower. However, in order to add the mobile communication device on the basis of the existing tower, whether the existing tower can be safely used after the communication device is added needs to be considered in such a situation.
However, in the prior art, there is no method for evaluating the safety level of the existing tower that can be safely used after the mobile communication equipment is added.
Disclosure of Invention
The invention aims to solve the problem that in the prior art, safety grade evaluation cannot be carried out on whether a tower can be safely used or not after mobile communication equipment is additionally arranged on the existing tower, and provides a shared tower safety use checking calculation method based on boundary judgment.
The invention relates to a boundary discrimination-based shared pole tower safe use checking calculation method, which comprises the following steps:
s1, selecting communication equipment installed on the shared tower; the communication device includes: optical cables, communication base stations and mobile antennas;
s2, respectively calculating the horizontal load and the vertical load of the original shared tower;
s3, respectively calculating the horizontal load and the vertical load of the shared tower after the communication equipment is added;
and S4, establishing a safety risk function according to the horizontal load and the vertical load of the shared tower added with the communication equipment obtained in the step S3, and judging the safety level of the shared tower according to the safety risk function and the safety use boundary condition of the shared tower.
Preferably, the horizontal load of the original shared tower in S2 includes tower wind pressure load and conductor wind pressure load;
the tower wind pressure load is:
Figure BDA0003229232620000021
wherein v represents the wind speed, C represents the wind load form factor, F represents the projection area of the side surface of the tower body of the wind pressure direction rod, and eta represents the wind pressure load reduction factor of the back surface of the space truss;
the wind pressure load of the lead is as follows:
Figure BDA0003229232620000022
wherein g represents the wind pressure specific load of the wire, S represents the cross-sectional area of the wire, lhRepresenting the horizontal span of the wire, theta representing the line angle of the wire, PjAnd indicating the wind pressure of the insulator string.
Preferably, the wind pressure of the insulator string is as follows:
Pj＝n1(n2+1)μsμzw0Aj；
wherein n is1Representing the number of insulator strings, n, used for a phase conductor2Indicates the number of pieces per insulator string, AjRepresents the wind area, mu, of each insulatorsRepresents the wind carrier type coefficient of the insulator string, muzIndicating the coefficient of variation of wind pressure with altitude, w0Indicating its own wind pressure.
Preferably, the vertical load of the original shared tower in S2 is:
G＝rSlv；
wherein r represents the vertical specific load of the wire, lvIndicating the vertical pitch of the wire.
Preferably, the step S3 of increasing the horizontal load of the shared tower behind the communication device includes increasing a wind pressure load of a tower behind the communication device and increasing a wind pressure load of a rear conductor behind the communication device;
the wind pressure load of the tower after the communication equipment is added is as follows: p1'＝P1+Pa(ii) a Wherein, PaRepresenting a mobile antenna load;
increase communication equipment back wire wind pressure load does: p2'＝P2+Pb(ii) a Wherein, PbRepresenting the cable load;
Figure BDA0003229232620000023
wherein, gbIndicating the wind pressure specific load of the cable, SbDenotes the cross-sectional area of the optical cable, /)hbIndicating the horizontal span, theta, of the cablebIndicating the line corner of the cable.
Preferably, the vertical load of the shared tower after the communication equipment is added is as follows:
G'＝G+rbSblvb+Ga；
wherein r isbIndicating the vertical specific load of the cable, /)vbIndicating the vertical span of the cable, GaRepresenting the vertical loading of the mobile antenna.
Preferably, the specific method for establishing the security risk function in S4 is as follows:
Risk＝ρ1P1'+ρ2P2'+ρ3G'+ρ4PYQ+ρ5PYM；
where ρ is1Representing tower wind pressure load risk coefficient rho2Representing the risk coefficient of wind pressure load of the wire, rho3Representing the risk coefficient, rho, of the vertical load of the shared tower4Representing the tower inclination risk factor, PYQRepresenting the tower inclination risk function, p5Representing the tower cross-road displacement risk coefficient, PYMAnd representing a tower crossroad displacement risk function.
Preferably, the tower inclination risk function is as follows:
Figure BDA0003229232620000031
wherein Q represents the actual body inclination rate of the original shared tower;
the tower cross-road displacement risk function is as follows:
Figure BDA0003229232620000032
wherein M represents the actual cross-path displacement rate of the tower body of the original shared tower.
Preferably, in S4, the specific method for determining the security level of the shared tower according to the security risk function and the security usage boundary condition of the shared tower is as follows:
sharing the safe use grade E of the pole tower:
Figure BDA0003229232620000033
wherein, I, II, III and IV respectively represent four levels of safe use of the shared tower, and sequentially represent safe, medium dangerous and high dangerous.
Preferably, the communication base station is installed in the range of the root opening of the shared tower, the mobile antenna is installed below the power transmission line of the shared tower, the communication base station and the mobile antenna are connected through an optical cable, and the communication base station is accessed to a return network of an operator through the optical cable.
The invention has the advantages that: according to the method, firstly, communication equipment to be installed on a shared tower is selected according to communication requirements, then horizontal load and vertical load after the communication equipment is added are calculated, a safety risk function is established, the safety risk function is compared with the safe use boundary conditions of the shared tower, and the safety level of the shared tower is judged.
The shared pole tower safe use checking calculation method based on boundary judgment can accurately judge that the pole tower can be safely used after communication equipment is added, and divides the safety level of the pole tower, so that the follow-up work can be guided conveniently.
The safety grade is totally divided into four grades, the models of the communication equipment to be additionally arranged need to be replaced under the conditions that the shared tower is in high danger and medium danger, the installation mode of the additionally arranged communication equipment needs to be adjusted under the condition that the shared tower is in medium safety, and the direct construction can be realized under the condition that the shared tower is safe.
Drawings
FIG. 1 is a flowchart of a shared pole and tower safety use checking method based on boundary discrimination according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
The first embodiment is as follows: the following describes the present embodiment with reference to fig. 1, and the shared tower safe use checking method based on boundary determination in the present embodiment includes:
s1, selecting communication equipment installed on the shared tower; the communication device includes: optical cables, communication base stations and mobile antennas;
s2, respectively calculating the horizontal load and the vertical load of the original shared tower;
s3, respectively calculating the horizontal load and the vertical load of the shared tower after the communication equipment is added;
and S4, establishing a safety risk function according to the horizontal load and the vertical load of the shared tower added with the communication equipment obtained in the step S3, and judging the safety level of the shared tower according to the safety risk function and the safety use boundary condition of the shared tower.
Further, the horizontal load of the original shared tower in S2 includes tower wind pressure load and conductor wind pressure load;
the tower wind pressure load is:
Figure BDA0003229232620000041
wherein v represents the wind speed, C represents the wind load form factor, F represents the projection area of the side surface of the tower body of the wind pressure direction rod, and eta represents the wind pressure load reduction factor of the back surface of the space truss;
the wind pressure load of the lead is as follows:
Figure BDA0003229232620000051
wherein g represents the wind pressure specific load of the wire, S represents the cross-sectional area of the wire, lhRepresenting the horizontal span of the wire, theta representing the line angle of the wire, PjAnd indicating the wind pressure of the insulator string.
Still further, insulator chain wind pressure does:
Pj＝n1(n2+1)μsμzw0Aj；
wherein n is1Representing the number of insulator strings, n, used for a phase conductor2Indicates the number of pieces per insulator string, AjRepresents the wind area, mu, of each insulatorsRepresents the wind carrier type coefficient of the insulator string, muzIndicating the coefficient of variation of wind pressure with altitude, w0Indicating its own wind pressure.
Further, in S2, the vertical load of the original shared tower is:
G＝rSlv；
wherein r represents the vertical specific load of the wire, lvIndicating the vertical pitch of the wire.
Further, the step S3 of increasing the horizontal load of the shared tower after the communication device includes increasing a wind pressure load of the tower after the communication device and increasing a wind pressure load of a conductor after the communication device;
the wind pressure load of the tower after the communication equipment is added is as follows: p1'＝P1+Pa(ii) a Wherein, PaRepresenting a mobile antenna load;
increase communication equipment back wire wind pressure load does: p2'＝P2+Pb(ii) a Wherein, PbRepresenting the cable load;
Figure BDA0003229232620000052
wherein, gbIndicating the wind pressure specific load of the cable, SbDenotes the cross-sectional area of the optical cable, /)hbIndicating the horizontal span, theta, of the cablebIndicating the line corner of the cable.
In this embodiment, the antenna load P is movedaDetermined according to the model selected in S1.
Further, the vertical load of the shared tower after the communication equipment is added is as follows:
G'＝G+rbSblvb+Ga；
wherein r isbIndicating the vertical specific load of the cable, /)vbIndicating the vertical span of the cable, GaRepresenting the vertical loading of the mobile antenna.
Still further, the specific method for establishing the security risk function in S4 is as follows:
Risk＝ρ1P1'+ρ2P2'+ρ3G'+ρ4PYQ+ρ5PYM；
where ρ is1Representing tower wind pressure load risk coefficient rho2Representing the risk coefficient of wind pressure load of the wire, rho3Representing the risk coefficient, rho, of the vertical load of the shared tower4Representing the tower inclination risk factor, PYQRepresenting the tower inclination risk function, p5Horizontal pole for indicating pole towerRoad Displacement Risk coefficient, PYMAnd representing a tower crossroad displacement risk function.
Still further, the tower inclination risk function is:
Figure BDA0003229232620000061
wherein Q represents the actual body inclination rate of the original shared tower;
the tower cross-road displacement risk function is as follows:
Figure BDA0003229232620000062
wherein M represents the actual cross-path displacement rate of the tower body of the original shared tower.
In the embodiment, the shared tower is allowed to have an inclination rate smaller than 5% in the construction process, and when the inclination rate of the tower is larger than 5%, the tower is considered to be in danger accidents that the tower collapses due to the fact that the forced stability of the tower is reduced, so that the continuous function is adopted to represent the inclination risk function of the shared tower.
Further, in S4, the specific method for determining the security level of the shared tower according to the security risk function and the security boundary condition of the shared tower is as follows:
sharing the safe use grade E of the pole tower:
Figure BDA0003229232620000063
wherein, I, II, III and IV respectively represent four levels of safe use of the shared tower, and sequentially represent safe, medium dangerous and high dangerous.
The second embodiment is as follows: in this embodiment, the communication base station is installed in the root-open range of the shared tower, the mobile antenna is installed below the power transmission line of the shared tower, the communication base station and the mobile antenna are connected by an optical cable, and the communication base station is accessed to the backhaul network of the operator through the optical cable.
In the present embodiment, the root opening range refers to the distance between the two or three links on the plane and the center of the link, for the shared electric pole. For shared towers, the root opening range refers to the distance between tower legs.
According to the method, firstly, communication equipment to be installed on a shared tower is selected according to communication requirements, wherein the communication equipment comprises an optical cable, a communication base station and a mobile antenna. The communication base station is installed in the range of the root opening of the sharing tower, the mobile antenna is installed below the power transmission line of the sharing tower, the communication base station and the mobile antenna are connected through an optical cable, and the communication base station is connected to a return network of an operator through the optical cable. That is to say, the influence of the communication base station on the shared tower does not need to be considered, and after the mobile antenna and the optical cable are installed on the shared tower, the need for continuous safe use can be determined.
According to the method, the horizontal load and the vertical load after the communication equipment is added are calculated according to the horizontal load and the vertical load of the original shared tower, then a safety risk function is established, the safety risk function is compared with the safety use boundary condition of the shared tower, and the safety level of the shared tower is judged. The safety levels are divided into four levels in total, when the safety risk function is greater than or equal to 0.8, the shared tower is high-risk if communication equipment is added, when the safety risk function is greater than or equal to 0.6 and less than 0.8, the shared tower is medium-risk if the communication equipment is added, under the two conditions, the model of the communication equipment to be additionally arranged needs to be replaced, when the safety risk function is greater than or equal to 0.3 and less than 0.6, the shared tower is medium-safe if the communication equipment is added, in this case, the installation mode of the additionally arranged communication equipment needs to be adjusted, and when the safety risk function is less than 0.3, the shared tower is safe if the communication equipment is added, and direct construction can be achieved.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims (10)

1. A shared pole tower safe use checking calculation method based on boundary discrimination is characterized by comprising the following steps:
s1, selecting communication equipment installed on the shared tower; the communication device includes: optical cables, communication base stations and mobile antennas;
s2, respectively calculating the horizontal load and the vertical load of the original shared tower;
s3, respectively calculating the horizontal load and the vertical load of the shared tower after the communication equipment is added;
and S4, establishing a safety risk function according to the horizontal load and the vertical load of the shared tower added with the communication equipment obtained in the step S3, and judging the safety level of the shared tower according to the safety risk function and the safety use boundary condition of the shared tower.
2. The shared pole tower safety use checking calculation method based on boundary discrimination according to claim 1, wherein the horizontal load of the original shared pole tower of S2 comprises a pole tower wind pressure load and a wire wind pressure load;
the tower wind pressure load is:
Figure FDA0003229232610000011
wherein v represents the wind speed, C represents the wind load form factor, F represents the projection area of the side surface of the tower body of the wind pressure direction rod, and eta represents the wind pressure load reduction factor of the back surface of the space truss;
the wind pressure load of the lead is as follows:
Figure FDA0003229232610000012
wherein g represents the wind pressure specific load of the wire, S represents the cross-sectional area of the wire, lhRepresenting the horizontal span of the wire, theta representing the line angle of the wire, PjAnd indicating the wind pressure of the insulator string.
3. The boundary discrimination-based shared tower safety use checking calculation method according to claim 2, wherein the wind pressure of the insulator string is as follows:
Pj＝n1(n2+1)μsμzw0Aj；
wherein n is1Representing the number of insulator strings, n, used for a phase conductor2Indicates the number of pieces per insulator string, AjRepresents the wind area, mu, of each insulatorsRepresents the wind carrier type coefficient of the insulator string, muzIndicating the coefficient of variation of wind pressure with altitude, w0Indicating its own wind pressure.
4. The shared pole tower safety use checking calculation method based on boundary discrimination according to claim 2, wherein the vertical load of the original shared pole tower S2 is as follows:
G＝rSlv；
wherein r represents the vertical specific load of the wire, lvIndicating the vertical pitch of the wire.
5. The shared pole tower safety use checking calculation method based on boundary discrimination as claimed in claim 4, wherein the increasing of the horizontal load of the shared pole tower after the communication equipment in S3 includes increasing the wind pressure load of the pole tower after the communication equipment and increasing the wind pressure load of the conductor after the communication equipment;
the wind pressure load of the tower after the communication equipment is added is as follows: p1'＝P1+Pa(ii) a Wherein, PaRepresenting a mobile antenna load;
increase communication equipment back wire wind pressure load does: p2'＝P2+Pb(ii) a Wherein, PbRepresenting the cable load;
Figure FDA0003229232610000021
wherein, gbIndicating the wind pressure specific load of the cable, SbDenotes the cross-sectional area of the optical cable, /)hbIndicating the horizontal span, theta, of the cablebIndicating the line corner of the cable.
6. The shared pole tower safe use checking calculation method based on boundary discrimination as claimed in claim 5, wherein the vertical load of the shared pole tower after the communication equipment is added is as follows:
G'＝G+rbSblvb+Ga；
wherein r isbIndicating the vertical specific load of the cable, /)vbIndicating the vertical span of the cable, GaRepresenting the vertical loading of the mobile antenna.
7. The boundary discrimination-based shared tower safety use checking calculation method according to claim 6, wherein the specific method for establishing the safety risk function in S4 is as follows:
Risk＝ρ1P1'+ρ2P2'+ρ3G'+ρ4PYQ+ρ5PYM；
where ρ is1Representing tower wind pressure load risk coefficient rho2Representing the risk coefficient of wind pressure load of the wire, rho3Representing the risk coefficient, rho, of the vertical load of the shared tower4Representing the tower inclination risk factor, PYQRepresenting the tower inclination risk function, p5Representing the tower cross-road displacement risk coefficient, PYMAnd representing a tower crossroad displacement risk function.
8. The shared pole tower safety use checking calculation method based on boundary discrimination as claimed in claim 7, wherein the pole tower inclination risk function is:
Figure FDA0003229232610000022
wherein Q represents the actual body inclination rate of the original shared tower;
the tower cross-road displacement risk function is as follows:
Figure FDA0003229232610000023
wherein M represents the actual cross-path displacement rate of the tower body of the original shared tower.
9. The shared pole and tower safety use checking method based on boundary discrimination according to claim 7, wherein the specific method for discriminating the safety level of the shared pole and tower according to the safety risk function and the boundary condition of the shared pole and tower safety use in S4 is as follows:
sharing the safe use grade E of the pole tower:
Figure FDA0003229232610000031
wherein, I, II, III and IV respectively represent four levels of safe use of the shared tower, and sequentially represent safe, medium dangerous and high dangerous.
10. The shared tower safe use checking calculation method based on boundary discrimination according to any one of claims 1-9, characterized in that the communication base station is installed in the range of the root of the shared tower, the mobile antenna is installed below the transmission line of the shared tower, the communication base station and the mobile antenna are connected by an optical cable, and the communication base station is accessed to the backhaul network of the operator through the optical cable.
CN202110981695.6A 2021-08-25 2021-08-25 Shared pole tower safe use checking calculation method based on boundary discrimination Withdrawn CN113627822A (en)

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