Yangtze River Crossing

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The Yangtze River Crossing may refer to one of three overhead power line crossing the Yangtze River, China.

[edit] Jiangyin

There exists one at Jiangyin. It is a section of the 500kV-powerline from the Yan Cheng power station to the Dou Shan substation in the province of Jiangsu. The powerline section running over the river has a span width of 2,303 metres. It is carried by two 346.5 metre tall suspension electricity pylons, each weighing 4,192 tons. They are both identical lattice towers of square cross section with an area of 68 × 68 metres at the base and 8 × 8 metres at the top. The pylons are of the Danube type carrying 4 conductors on the upper crossbar, 312 metres above ground with a length of 77 metres and two conductors on the upper crossbar. The insulator chains are 10 metres long. These pylons, which are both equipped with an elevator, which runs in a cylindrical tube in its center, are much taller than any other electricity pylons built so far and surpass even the Eiffel Tower. On each side of the river are these pylons followed by two anchor towers, for each circuit. They are 55 metres tall, weigh 110 tons and stand on an area of 16 × 24 metres.

Construction of pylons started on November 8th, 2002. They were completed on April 13th, 2004. On November 18th, 2004 the powerline went into service.

[edit] Nanjing

There exists a 500 kV overhead powerline (with two circuits) crossing of the Yangtze River at Nanjing in China built in 1992. It uses two 257 metre tall pylons built of reinforced concrete, which may be the tallest pylons built of concrete in the world. The span width is 2053 metres.

[edit] Wuhu

There exists an overhead powerline crossing of HVDC Three Gorges-Changzhou (Yangtze River) near Wuhu, which was built in 2003. It consists of 2 229 metre tall pylons built as constructions of tubular steel, which carry two conductors. The span width of Yangtze River Crossing Wuhu is 1910 metres. by lesaint

[edit] External links

• http://www.balfourbeatty.com/bbeatty/businesses/engineering/powernetworks/
• http://www.pbpower.net/inprint/articles/critical/critical.pdf
• http://www.balfourbeatty.com/bbeatty/aboutus/atwork/yangtze/yangtze.pdf
• http://www.elevator-world.com/files/feb06.pdf
• http://www.skyscraperpage.com/diagrams/?b51948
• http://www.skyscraperpage.com/diagrams/?b51949
• http://www.skyscraperpage.com/cities/?buildingID=51951
• http://www.skyscraperpage.com/cities/?buildingID=51952
• http://en.structurae.de/structures/data/index.cfm?id=s0024965

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