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220kv Electric Power Transmission Galvanized Iron Pipe Mono Pole Tower

220kv Electric Power Transmission Galvanized Iron Pipe Mono Pole Tower

It is single self-supporting pole, widely used in power transmission line or telecom project. Based on the number of segments, this monopole towers are classified as four slope tower, Three slope tower; Two slope tower; Single slope tower; Straight tower.
In telecom project, four slope monopole towers is generally placed over roofs of high raised buildings, when number of antennae required is less or height of tower required is less than 9 m. In power transmission line project, four slope monopole towers is widely used in city grid corporation for 10KV, 35KV, 66KV, 69KV, 110KV, 115KV, 220KV power transmission line project.


1 climate condition

ItemTemperature (ºC)Wind speed (m/s)Ice thickness (mm)
Max. temperature4000
Mini. temperature-3000
Ice thickness-51010
Basic wind speed-5270
Installation condition-15100
Annual temperature500
Lightning overvoltage15100
Operation overvoltage5150
Hot-line work15100


 
2 tower design data

Tower
type
Nominal
Height
scope
(mm)
Nominal
Height
(mm)
Horizontal
span
(m)
Vertical
Span
(m)
Angle
º
Insulator
Type
Horizontal
Span at angel condition
1GGE4-SJG115~27271502000~10//
Conductor type: 2×LGJ -240/30OPGW: JLB-100


 
3 Tower estimated weight and foundation force

Tower
Type
Tower weight scope (kg)Foundation force scope (KN)
Horizontal forceVertical forceMax. bending distance
1GGE4- SJG16887~1145491~108172~2331729~3038


 
 
4 Here is the design strength of Chinese tower steel

Steel materialAnti-push, bending and press strength (N/mm2)Anti-shear strength
(N/mm2)
GradeThickness or diameter (mm)
Q235
Steel
≤16215125
>16~40205120
>40~60200115
>60~100190110
Q345
Steel
≤16310180
>16~35295170
>35~50265155
>50~100250145
Q420
Steel
≤16380220
>16~35360210
>35~50340195
>50~100325185
Q460
Steel
≤16415240
>16~35395230
>35~50380220
>50~100360210


5 Here is the design strength of our Chinese tower bolts

ItemGradeAnti-push strength (N/mm2)Anti-shear strength (N/mm2)
Fastener
for towers
4.8200170
5.8240210
6.8300240
8.8400300
Anchor
 bolts
Q235160/
Chinese 35 steel190/
Chinese 45 steel215/


220kv Electric Power Transmission Galvanized Iron Pipe Mono Pole Tower


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