Safety device for crossing tower and anchor tower of power transmission line

Abstract

The invention discloses a safety device for a crossing tower and an anchor tower of a power transmission line. The safety device comprises anticollision pier bodies and connecting crossbeams; a plurality of reinforced concrete pier bodies with independent foundations are arranged around the crossing tower and the anchor tower of the power transmission line, which are positioned in the flood land or riverway and is not protected by a dam; the top ends of the adjacent pier bodies are connected by the horizontal reinforced concrete connecting crossbeams arranged above the level of once-a-century flood to form the safety device with an integral frame structure; each pier body comprises an underground foundation buried underground and a pier body arranged on the earth surface; the cross section of each pier body is an kidney-shaped surface, and one narrower surface of each pier body faces to the water flowing direction; and the foundation of each pier is independent of the crossing tower and the anchor tower and keeps a certain safety distance from the crossing tower and the anchor tower. The safety device for the crossing tower and the anchor tower of the power transmission line has the advantages of strong safety function, simple structure, short building peroid, no influence to flood discharge in the flood peroid and the like.

Description

technical field [0001] The invention relates to a safety protection device for a power transmission line spanning tower and an anchor tower. Background technique [0002] When high-voltage and transmission lines pass through the river, large spanning towers and anchor towers are often built outside the embankment of the river, so that the transmission line can transmit electricity across the river. But when the flood season comes, the large span tower and the anchor tower are submerged in the flood. Span towers and anchor towers are likely to be struck by floating debris and out-of-control vessels in the flood. For example, the 500kV Pingfei Line 5302 / Pingxi Line 5312 is a heavy-duty line of the Anhui Electricity Transmission Channel to the East. This line will cross the Huaihe River, and its safe operation is very important. Due to the treatment of the middle and upper reaches of the Huaihe River, the embankment has been withdrawn, and the new Huaihe embankment will place...

AI Technical Summary

Problems solved by technology

Not only the huge investment and long construction period of the big span, but also the unstable operation of the Anhui power grid caused by the interruption of the transmission channel will seriously affect the safe operation of the entire East China power grid and cause huge economic losses

[0003] "Electric Power Construction" Volume 28, No. 8, "500KV Hangzhou-Lanzhou Line Qiantang River Middle Railway Tower Foundation Design" published in August 2007 discloses a kind of anti-collision measure for the middle of the river tower, which sets a ring of steel around the base of the tower Fence, the steel fence is composed of ?800mm steel pipe piles and two horizontal ?600mm steel pipes. The steel pipe piles are filled with concrete. The outer surface of the steel pipe piles is coated with anti-corrosion coating. The construction period is about one year. The tower base is surrounded by a closed structure, which has great resistance to water flow, and has disadvantages such as complex structure, large construction volume, long construction period, high construction cost, large amount of steel consumption, and poor environmental protection performance.

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