Yangtze River power line crossings
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The Yangtze River power line crossings are
China. There are at least three power line crossings on the Yangtze River at Jiangyin, Nanjing, and Wuhu. The towers of the crossing in Jiangyin are among the highest in the world
.
Jiangyin
One exists at
insulator strings are 10 m (33 ft) long. These pylons are both equipped with an elevator
which runs in a cylindrical tube in its center. A spiral staircase circles the elevator shaft outside.
On each side of the river are each main span pylon, followed by two anchor towers; one for each circuit. The anchor pylons are each 55 m (180 ft) tall, weigh 110 tonnes and stand on an area of 16 m × 24 m (52 ft × 79 ft).
Construction of the pylons started on November 8, 2002. They were completed on April 13, 2004. On November 18, 2004, the power line went into service.
Nanjing
A dual circuit, 500 kV AC overhead powerline crosses the Yangtze River at
China, built in 1992. It uses two 257 m (843 ft) tall pylons built of reinforced concrete, which may be the tallest pylons built out of concrete in the world.[original research?] They are situated at 31°57′46″N 118°36′58″E / 31.96278°N 118.61611°E and at 31°57′11″N 118°38′4″E / 31.95306°N 118.63444°E
and carry 6 conductors in two levels. The span width is 2,053 m (6,736 ft).
Wuhu
The
China, at 31°30′2″N 118°22′11″E / 31.50056°N 118.36972°E and 31°30′37″N 118°21′11″E / 31.51028°N 118.35306°E
. The pylons were built in 2003. The crossing consists of two 229 m (751 ft) tall pylons built as constructions of tubular steel, which carry two conductors. The span width is 1,910 m (6,266 ft). Close to it, there is a 500 kV AC powerline crossing with a span width of 1,960 m (6,430 ft) on probably taller towers and a 110 kV AC powerline crossing with a span width of 1,410 m (4,626 ft). Both AC crossings have 6 conductors.
See also
- Lattice tower
- Yangtze River bridges and tunnels
- List of tallest buildings and structures in the world
- List of tallest freestanding structures in the world
- List of tallest freestanding steel structures